/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:22:05,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:22:05,407 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:22:05,431 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:22:05,432 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:22:05,433 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:22:05,434 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:22:05,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:22:05,437 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:22:05,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:22:05,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:22:05,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:22:05,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:22:05,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:22:05,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:22:05,443 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:22:05,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:22:05,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:22:05,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:22:05,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:22:05,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:22:05,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:22:05,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:22:05,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:22:05,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:22:05,465 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:22:05,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:22:05,466 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:22:05,467 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:22:05,469 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:22:05,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:22:05,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:22:05,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:22:05,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:22:05,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:22:05,473 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:22:05,474 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:22:05,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:22:05,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:22:05,483 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:22:05,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:22:05,486 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 [2020-10-14 09:22:05,525 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:22:05,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:22:05,527 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:22:05,527 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:22:05,527 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:22:05,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:22:05,527 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:22:05,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:22:05,528 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:22:05,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:22:05,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:22:05,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:22:05,529 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:22:05,529 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:22:05,529 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:22:05,529 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:22:05,529 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:22:05,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:22:05,530 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:22:05,530 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:22:05,530 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:22:05,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:22:05,530 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:22:05,531 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:22:05,531 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:22:05,531 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:22:05,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:22:05,531 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:22:05,532 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:22:05,532 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 09:22:05,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:22:05,850 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:22:05,855 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:22:05,858 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:22:05,860 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:22:05,861 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2020-10-14 09:22:05,936 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/925e0c8bd/7153983de34640f2aa97f5e84025a134/FLAG09ae40aee [2020-10-14 09:22:06,454 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:22:06,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2020-10-14 09:22:06,465 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/925e0c8bd/7153983de34640f2aa97f5e84025a134/FLAG09ae40aee [2020-10-14 09:22:06,936 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/925e0c8bd/7153983de34640f2aa97f5e84025a134 [2020-10-14 09:22:06,946 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:22:06,948 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:22:06,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:22:06,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:22:06,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:22:06,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:22:06" (1/1) ... [2020-10-14 09:22:06,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5253b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:06, skipping insertion in model container [2020-10-14 09:22:06,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:22:06" (1/1) ... [2020-10-14 09:22:06,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:22:07,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:22:07,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:22:07,452 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:22:07,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:22:07,551 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:22:07,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:07 WrapperNode [2020-10-14 09:22:07,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:22:07,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:22:07,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:22:07,553 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:22:07,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:07" (1/1) ... [2020-10-14 09:22:07,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:07" (1/1) ... [2020-10-14 09:22:07,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:07" (1/1) ... [2020-10-14 09:22:07,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:07" (1/1) ... [2020-10-14 09:22:07,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:07" (1/1) ... [2020-10-14 09:22:07,608 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:07" (1/1) ... [2020-10-14 09:22:07,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:07" (1/1) ... [2020-10-14 09:22:07,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:22:07,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:22:07,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:22:07,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:22:07,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:07" (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 [2020-10-14 09:22:07,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:22:07,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:22:07,688 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:22:07,688 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:22:07,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:22:07,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:22:07,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:22:07,689 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:22:07,689 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:22:07,689 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:22:07,689 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:22:07,690 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:22:07,690 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:22:07,690 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:22:07,690 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:22:07,690 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 09:22:07,690 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-14 09:22:07,691 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-14 09:22:07,691 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:22:07,691 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:22:07,691 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:22:07,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:22:07,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:22:08,524 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:22:08,524 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:22:08,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:22:08 BoogieIcfgContainer [2020-10-14 09:22:08,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:22:08,531 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:22:08,531 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:22:08,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:22:08,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:22:06" (1/3) ... [2020-10-14 09:22:08,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@713eb0ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:22:08, skipping insertion in model container [2020-10-14 09:22:08,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:22:07" (2/3) ... [2020-10-14 09:22:08,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@713eb0ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:22:08, skipping insertion in model container [2020-10-14 09:22:08,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:22:08" (3/3) ... [2020-10-14 09:22:08,538 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2020-10-14 09:22:08,548 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:22:08,556 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 09:22:08,569 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 09:22:08,593 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:22:08,593 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:22:08,594 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:22:08,594 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:22:08,594 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:22:08,594 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:22:08,595 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:22:08,595 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:22:08,616 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states. [2020-10-14 09:22:08,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-14 09:22:08,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:22:08,629 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:22:08,630 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:22:08,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:22:08,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1068794681, now seen corresponding path program 1 times [2020-10-14 09:22:08,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:22:08,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963530149] [2020-10-14 09:22:08,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:22:08,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:09,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:09,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:09,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:09,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:09,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:11,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:11,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:14,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:14,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 09:22:14,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:22:14,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 09:22:14,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:14,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:14,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:22:14,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 09:22:14,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 09:22:14,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 09:22:14,381 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 09:22:14,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:22:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:14,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:14,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:14,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:22:14,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:22:14,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 09:22:14,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:14,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:14,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:22:14,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:22:14,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:22:14,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:22:14,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:22:14,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963530149] [2020-10-14 09:22:14,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:22:14,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:22:14,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924136568] [2020-10-14 09:22:14,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:22:14,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:22:14,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:22:14,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:22:14,475 INFO L87 Difference]: Start difference. First operand 168 states. Second operand 4 states. [2020-10-14 09:22:14,863 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-14 09:22:15,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:22:15,987 INFO L93 Difference]: Finished difference Result 392 states and 634 transitions. [2020-10-14 09:22:15,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:22:15,989 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2020-10-14 09:22:15,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:22:16,004 INFO L225 Difference]: With dead ends: 392 [2020-10-14 09:22:16,004 INFO L226 Difference]: Without dead ends: 264 [2020-10-14 09:22:16,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:22:16,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-10-14 09:22:16,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 262. [2020-10-14 09:22:16,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-14 09:22:16,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 390 transitions. [2020-10-14 09:22:16,081 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 390 transitions. Word has length 77 [2020-10-14 09:22:16,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:22:16,081 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 390 transitions. [2020-10-14 09:22:16,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:22:16,082 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 390 transitions. [2020-10-14 09:22:16,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 09:22:16,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:22:16,085 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:22:16,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:22:16,086 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:22:16,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:22:16,087 INFO L82 PathProgramCache]: Analyzing trace with hash -387622653, now seen corresponding path program 1 times [2020-10-14 09:22:16,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:22:16,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784079634] [2020-10-14 09:22:16,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:22:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:16,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:16,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:16,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:16,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:16,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:16,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:21,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:21,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 09:22:21,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 09:22:21,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-14 09:22:21,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:21,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:21,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:22:21,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 09:22:21,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 09:22:21,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-14 09:22:21,548 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 09:22:21,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:22:21,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:21,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:21,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:21,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:22:21,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:22:21,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:22:21,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:21,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:21,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:22:21,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:22:21,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:22:21,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:22:21,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:22:21,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784079634] [2020-10-14 09:22:21,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:22:21,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:22:21,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306354711] [2020-10-14 09:22:21,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:22:21,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:22:21,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:22:21,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:22:21,592 INFO L87 Difference]: Start difference. First operand 262 states and 390 transitions. Second operand 4 states. [2020-10-14 09:22:21,802 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-14 09:22:22,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:22:22,438 INFO L93 Difference]: Finished difference Result 658 states and 1022 transitions. [2020-10-14 09:22:22,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:22:22,440 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-10-14 09:22:22,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:22:22,444 INFO L225 Difference]: With dead ends: 658 [2020-10-14 09:22:22,444 INFO L226 Difference]: Without dead ends: 444 [2020-10-14 09:22:22,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:22:22,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2020-10-14 09:22:22,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 442. [2020-10-14 09:22:22,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-10-14 09:22:22,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 677 transitions. [2020-10-14 09:22:22,480 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 677 transitions. Word has length 78 [2020-10-14 09:22:22,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:22:22,481 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 677 transitions. [2020-10-14 09:22:22,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:22:22,481 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 677 transitions. [2020-10-14 09:22:22,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-14 09:22:22,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:22:22,484 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:22:22,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:22:22,484 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:22:22,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:22:22,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1520450914, now seen corresponding path program 1 times [2020-10-14 09:22:22,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:22:22,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625903563] [2020-10-14 09:22:22,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:22:22,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:22,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:22,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:22,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:22,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:23,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:25,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:25,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 09:22:25,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:22:25,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3136 [2020-10-14 09:22:25,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:25,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:25,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:22:25,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 09:22:25,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 09:22:25,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:22:25,863 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 09:22:25,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:22:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:25,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:25,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:25,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:22:25,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:22:25,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:22:25,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:25,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:25,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:22:25,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:22:25,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:22:25,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:22:25,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:22:25,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625903563] [2020-10-14 09:22:25,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:22:25,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:22:25,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017870564] [2020-10-14 09:22:25,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:22:25,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:22:25,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:22:25,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:22:25,901 INFO L87 Difference]: Start difference. First operand 442 states and 677 transitions. Second operand 4 states. [2020-10-14 09:22:26,118 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-14 09:22:26,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:22:26,840 INFO L93 Difference]: Finished difference Result 1166 states and 1831 transitions. [2020-10-14 09:22:26,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:22:26,841 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-10-14 09:22:26,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:22:26,850 INFO L225 Difference]: With dead ends: 1166 [2020-10-14 09:22:26,850 INFO L226 Difference]: Without dead ends: 772 [2020-10-14 09:22:26,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:22:26,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2020-10-14 09:22:26,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 770. [2020-10-14 09:22:26,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 770 states. [2020-10-14 09:22:26,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 1197 transitions. [2020-10-14 09:22:26,957 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 1197 transitions. Word has length 79 [2020-10-14 09:22:26,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:22:26,957 INFO L479 AbstractCegarLoop]: Abstraction has 770 states and 1197 transitions. [2020-10-14 09:22:26,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:22:26,958 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 1197 transitions. [2020-10-14 09:22:26,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 09:22:26,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:22:26,963 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:22:26,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:22:26,963 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:22:26,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:22:26,964 INFO L82 PathProgramCache]: Analyzing trace with hash -130136788, now seen corresponding path program 1 times [2020-10-14 09:22:26,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:22:26,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735947159] [2020-10-14 09:22:26,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:22:27,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:27,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:27,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:27,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:27,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:28,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:28,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 09:22:28,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 09:22:28,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1528 [2020-10-14 09:22:28,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:28,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:28,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:22:28,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 09:22:28,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 09:22:28,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:22:28,766 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 09:22:28,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:22:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:28,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:28,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:28,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:22:28,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:22:28,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:22:28,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:28,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:28,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:22:28,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:22:28,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:22:28,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:22:28,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:22:28,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735947159] [2020-10-14 09:22:28,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:22:28,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:22:28,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520901986] [2020-10-14 09:22:28,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:22:28,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:22:28,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:22:28,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:22:28,812 INFO L87 Difference]: Start difference. First operand 770 states and 1197 transitions. Second operand 4 states. [2020-10-14 09:22:29,050 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-14 09:22:29,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:22:29,858 INFO L93 Difference]: Finished difference Result 2086 states and 3287 transitions. [2020-10-14 09:22:29,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:22:29,859 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-10-14 09:22:29,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:22:29,870 INFO L225 Difference]: With dead ends: 2086 [2020-10-14 09:22:29,870 INFO L226 Difference]: Without dead ends: 1364 [2020-10-14 09:22:29,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:22:29,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2020-10-14 09:22:29,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1362. [2020-10-14 09:22:29,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1362 states. [2020-10-14 09:22:29,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 2129 transitions. [2020-10-14 09:22:29,943 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 2129 transitions. Word has length 80 [2020-10-14 09:22:29,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:22:29,944 INFO L479 AbstractCegarLoop]: Abstraction has 1362 states and 2129 transitions. [2020-10-14 09:22:29,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:22:29,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 2129 transitions. [2020-10-14 09:22:29,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-14 09:22:29,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:22:29,946 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:22:29,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:22:29,946 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:22:29,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:22:29,946 INFO L82 PathProgramCache]: Analyzing trace with hash -286520733, now seen corresponding path program 1 times [2020-10-14 09:22:29,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:22:29,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547149926] [2020-10-14 09:22:29,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:22:29,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:30,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:30,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:30,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:30,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:30,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 09:22:30,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 09:22:30,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 855 [2020-10-14 09:22:30,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:30,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:30,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:22:30,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 09:22:30,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 09:22:30,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:22:31,040 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 09:22:31,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:22:31,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:31,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:31,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:31,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:22:31,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:22:31,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:22:31,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:31,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:31,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:22:31,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:22:31,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:22:31,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:22:31,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:22:31,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547149926] [2020-10-14 09:22:31,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:22:31,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:22:31,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378266677] [2020-10-14 09:22:31,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:22:31,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:22:31,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:22:31,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:22:31,081 INFO L87 Difference]: Start difference. First operand 1362 states and 2129 transitions. Second operand 4 states. [2020-10-14 09:22:31,268 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-14 09:22:32,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:22:32,226 INFO L93 Difference]: Finished difference Result 3734 states and 5875 transitions. [2020-10-14 09:22:32,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:22:32,227 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2020-10-14 09:22:32,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:22:32,239 INFO L225 Difference]: With dead ends: 3734 [2020-10-14 09:22:32,240 INFO L226 Difference]: Without dead ends: 2420 [2020-10-14 09:22:32,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:22:32,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2420 states. [2020-10-14 09:22:32,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2420 to 2418. [2020-10-14 09:22:32,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2418 states. [2020-10-14 09:22:32,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 3777 transitions. [2020-10-14 09:22:32,352 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 3777 transitions. Word has length 81 [2020-10-14 09:22:32,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:22:32,353 INFO L479 AbstractCegarLoop]: Abstraction has 2418 states and 3777 transitions. [2020-10-14 09:22:32,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:22:32,353 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 3777 transitions. [2020-10-14 09:22:32,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-14 09:22:32,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:22:32,354 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:22:32,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:22:32,355 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:22:32,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:22:32,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1108571084, now seen corresponding path program 1 times [2020-10-14 09:22:32,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:22:32,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10334272] [2020-10-14 09:22:32,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:22:32,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:32,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:32,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:32,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:32,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 09:22:32,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 09:22:32,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-10-14 09:22:32,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:32,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:32,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:22:32,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 09:22:32,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 09:22:32,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:22:33,054 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 09:22:33,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:22:33,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:33,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:33,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:33,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:22:33,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:22:33,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:22:33,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:33,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:33,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:22:33,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:22:33,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:22:33,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:22:33,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:22:33,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10334272] [2020-10-14 09:22:33,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:22:33,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:22:33,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577909231] [2020-10-14 09:22:33,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:22:33,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:22:33,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:22:33,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:22:33,092 INFO L87 Difference]: Start difference. First operand 2418 states and 3777 transitions. Second operand 4 states. [2020-10-14 09:22:33,285 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-14 09:22:34,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:22:34,157 INFO L93 Difference]: Finished difference Result 6646 states and 10403 transitions. [2020-10-14 09:22:34,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:22:34,158 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-10-14 09:22:34,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:22:34,178 INFO L225 Difference]: With dead ends: 6646 [2020-10-14 09:22:34,179 INFO L226 Difference]: Without dead ends: 4276 [2020-10-14 09:22:34,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:22:34,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4276 states. [2020-10-14 09:22:34,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4276 to 4274. [2020-10-14 09:22:34,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4274 states. [2020-10-14 09:22:34,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4274 states to 4274 states and 6641 transitions. [2020-10-14 09:22:34,404 INFO L78 Accepts]: Start accepts. Automaton has 4274 states and 6641 transitions. Word has length 82 [2020-10-14 09:22:34,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:22:34,405 INFO L479 AbstractCegarLoop]: Abstraction has 4274 states and 6641 transitions. [2020-10-14 09:22:34,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:22:34,405 INFO L276 IsEmpty]: Start isEmpty. Operand 4274 states and 6641 transitions. [2020-10-14 09:22:34,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-14 09:22:34,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:22:34,406 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:22:34,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:22:34,407 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:22:34,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:22:34,407 INFO L82 PathProgramCache]: Analyzing trace with hash 363991160, now seen corresponding path program 1 times [2020-10-14 09:22:34,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:22:34,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733213404] [2020-10-14 09:22:34,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:22:34,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:34,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:34,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:35,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:35,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 09:22:35,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 09:22:35,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1218 [2020-10-14 09:22:35,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:35,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:35,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 09:22:35,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 09:22:35,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 09:22:35,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:22:35,902 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 09:22:35,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:22:35,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:35,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:35,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:35,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:22:35,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:22:35,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:22:35,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:35,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:35,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:22:35,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:22:35,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:22:35,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:22:35,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:22:35,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733213404] [2020-10-14 09:22:35,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:22:35,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 09:22:35,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393501137] [2020-10-14 09:22:35,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 09:22:35,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:22:35,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 09:22:35,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:22:35,967 INFO L87 Difference]: Start difference. First operand 4274 states and 6641 transitions. Second operand 9 states. [2020-10-14 09:22:36,379 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 09:22:38,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:22:38,241 INFO L93 Difference]: Finished difference Result 33856 states and 52792 transitions. [2020-10-14 09:22:38,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 09:22:38,242 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-10-14 09:22:38,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:22:38,348 INFO L225 Difference]: With dead ends: 33856 [2020-10-14 09:22:38,349 INFO L226 Difference]: Without dead ends: 29630 [2020-10-14 09:22:38,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-14 09:22:38,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29630 states. [2020-10-14 09:22:39,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29630 to 8498. [2020-10-14 09:22:39,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8498 states. [2020-10-14 09:22:39,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8498 states to 8498 states and 13105 transitions. [2020-10-14 09:22:39,052 INFO L78 Accepts]: Start accepts. Automaton has 8498 states and 13105 transitions. Word has length 83 [2020-10-14 09:22:39,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:22:39,052 INFO L479 AbstractCegarLoop]: Abstraction has 8498 states and 13105 transitions. [2020-10-14 09:22:39,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 09:22:39,052 INFO L276 IsEmpty]: Start isEmpty. Operand 8498 states and 13105 transitions. [2020-10-14 09:22:39,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-14 09:22:39,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:22:39,053 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:22:39,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:22:39,054 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:22:39,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:22:39,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1619708598, now seen corresponding path program 1 times [2020-10-14 09:22:39,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:22:39,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37547544] [2020-10-14 09:22:39,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:22:39,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:39,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:39,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:39,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:39,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 09:22:39,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 09:22:39,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 648 [2020-10-14 09:22:39,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:39,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:39,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:22:39,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 09:22:39,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 09:22:39,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:22:40,070 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 09:22:40,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:22:40,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:40,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:40,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:40,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:22:40,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:22:40,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 09:22:40,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:40,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:40,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:22:40,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:22:40,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:22:40,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 09:22:40,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:22:40,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37547544] [2020-10-14 09:22:40,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:22:40,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:22:40,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123511355] [2020-10-14 09:22:40,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:22:40,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:22:40,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:22:40,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:22:40,261 INFO L87 Difference]: Start difference. First operand 8498 states and 13105 transitions. Second operand 5 states. [2020-10-14 09:22:42,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:22:42,086 INFO L93 Difference]: Finished difference Result 17204 states and 26418 transitions. [2020-10-14 09:22:42,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 09:22:42,087 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-10-14 09:22:42,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:22:42,125 INFO L225 Difference]: With dead ends: 17204 [2020-10-14 09:22:42,125 INFO L226 Difference]: Without dead ends: 17202 [2020-10-14 09:22:42,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:22:42,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17202 states. [2020-10-14 09:22:42,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17202 to 8754. [2020-10-14 09:22:42,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8754 states. [2020-10-14 09:22:42,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8754 states to 8754 states and 13361 transitions. [2020-10-14 09:22:42,800 INFO L78 Accepts]: Start accepts. Automaton has 8754 states and 13361 transitions. Word has length 84 [2020-10-14 09:22:42,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:22:42,801 INFO L479 AbstractCegarLoop]: Abstraction has 8754 states and 13361 transitions. [2020-10-14 09:22:42,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:22:42,801 INFO L276 IsEmpty]: Start isEmpty. Operand 8754 states and 13361 transitions. [2020-10-14 09:22:42,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-14 09:22:42,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:22:42,802 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:22:42,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:22:42,802 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:22:42,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:22:42,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1338260839, now seen corresponding path program 1 times [2020-10-14 09:22:42,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:22:42,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036695283] [2020-10-14 09:22:42,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:22:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:42,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:42,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:43,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:43,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 09:22:43,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 09:22:43,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 467 [2020-10-14 09:22:43,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:43,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:43,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:22:43,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 09:22:43,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 09:22:43,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:22:43,489 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 09:22:43,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:22:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:43,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:43,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:43,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:22:43,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:22:43,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:22:43,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:43,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:43,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:22:43,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:22:43,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:22:43,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:22:43,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:22:43,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036695283] [2020-10-14 09:22:43,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:22:43,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:22:43,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053658436] [2020-10-14 09:22:43,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:22:43,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:22:43,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:22:43,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:22:43,522 INFO L87 Difference]: Start difference. First operand 8754 states and 13361 transitions. Second operand 4 states. [2020-10-14 09:22:43,698 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-14 09:22:44,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:22:44,930 INFO L93 Difference]: Finished difference Result 21880 states and 33429 transitions. [2020-10-14 09:22:44,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:22:44,931 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-10-14 09:22:44,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:22:44,959 INFO L225 Difference]: With dead ends: 21880 [2020-10-14 09:22:44,959 INFO L226 Difference]: Without dead ends: 13174 [2020-10-14 09:22:44,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:22:44,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13174 states. [2020-10-14 09:22:46,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13174 to 13172. [2020-10-14 09:22:46,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13172 states. [2020-10-14 09:22:46,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13172 states to 13172 states and 20051 transitions. [2020-10-14 09:22:46,173 INFO L78 Accepts]: Start accepts. Automaton has 13172 states and 20051 transitions. Word has length 85 [2020-10-14 09:22:46,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:22:46,173 INFO L479 AbstractCegarLoop]: Abstraction has 13172 states and 20051 transitions. [2020-10-14 09:22:46,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:22:46,173 INFO L276 IsEmpty]: Start isEmpty. Operand 13172 states and 20051 transitions. [2020-10-14 09:22:46,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 09:22:46,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:22:46,181 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:22:46,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:22:46,181 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:22:46,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:22:46,181 INFO L82 PathProgramCache]: Analyzing trace with hash -935229747, now seen corresponding path program 1 times [2020-10-14 09:22:46,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:22:46,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789024821] [2020-10-14 09:22:46,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:22:46,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:46,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:46,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:47,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:47,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 09:22:47,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 09:22:47,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 873 [2020-10-14 09:22:47,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:47,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:47,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:22:47,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 09:22:47,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 09:22:47,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:22:47,322 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 09:22:47,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:22:47,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:47,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:47,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:47,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:22:47,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:22:47,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:22:47,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:47,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:47,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:22:47,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:22:47,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:22:47,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:22:47,387 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 09:22:47,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789024821] [2020-10-14 09:22:47,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 09:22:47,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 09:22:47,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875775733] [2020-10-14 09:22:47,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:22:47,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:22:47,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:22:47,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:22:47,390 INFO L87 Difference]: Start difference. First operand 13172 states and 20051 transitions. Second operand 5 states. [2020-10-14 09:22:47,608 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-14 09:22:49,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:22:49,178 INFO L93 Difference]: Finished difference Result 30330 states and 46294 transitions. [2020-10-14 09:22:49,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 09:22:49,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-14 09:22:49,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:22:49,222 INFO L225 Difference]: With dead ends: 30330 [2020-10-14 09:22:49,223 INFO L226 Difference]: Without dead ends: 21624 [2020-10-14 09:22:49,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:22:49,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21624 states. [2020-10-14 09:22:50,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21624 to 21620. [2020-10-14 09:22:50,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21620 states. [2020-10-14 09:22:50,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21620 states to 21620 states and 32851 transitions. [2020-10-14 09:22:50,374 INFO L78 Accepts]: Start accepts. Automaton has 21620 states and 32851 transitions. Word has length 114 [2020-10-14 09:22:50,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:22:50,375 INFO L479 AbstractCegarLoop]: Abstraction has 21620 states and 32851 transitions. [2020-10-14 09:22:50,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:22:50,375 INFO L276 IsEmpty]: Start isEmpty. Operand 21620 states and 32851 transitions. [2020-10-14 09:22:50,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-14 09:22:50,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:22:50,383 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:22:50,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:22:50,383 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:22:50,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:22:50,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1530834419, now seen corresponding path program 1 times [2020-10-14 09:22:50,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:22:50,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133443760] [2020-10-14 09:22:50,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:22:50,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:50,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:50,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:50,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:50,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:52,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:55,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:55,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 09:22:55,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:22:55,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 09:22:55,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:55,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:55,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:22:55,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-14 09:22:55,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 09:22:55,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 09:22:55,654 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 09:22:55,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:22:55,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:55,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:55,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:55,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:22:55,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:22:55,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:22:55,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:55,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:55,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:22:55,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:22:55,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:22:55,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:22:55,696 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:22:55,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133443760] [2020-10-14 09:22:55,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:22:55,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:22:55,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381008272] [2020-10-14 09:22:55,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:22:55,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:22:55,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:22:55,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:22:55,698 INFO L87 Difference]: Start difference. First operand 21620 states and 32851 transitions. Second operand 4 states. [2020-10-14 09:22:55,887 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-14 09:22:58,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:22:58,126 INFO L93 Difference]: Finished difference Result 62776 states and 95253 transitions. [2020-10-14 09:22:58,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:22:58,126 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-10-14 09:22:58,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:22:58,203 INFO L225 Difference]: With dead ends: 62776 [2020-10-14 09:22:58,204 INFO L226 Difference]: Without dead ends: 41206 [2020-10-14 09:22:58,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:22:58,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41206 states. [2020-10-14 09:23:00,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41206 to 41204. [2020-10-14 09:23:00,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41204 states. [2020-10-14 09:23:00,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41204 states to 41204 states and 62131 transitions. [2020-10-14 09:23:00,487 INFO L78 Accepts]: Start accepts. Automaton has 41204 states and 62131 transitions. Word has length 115 [2020-10-14 09:23:00,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:23:00,488 INFO L479 AbstractCegarLoop]: Abstraction has 41204 states and 62131 transitions. [2020-10-14 09:23:00,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:23:00,488 INFO L276 IsEmpty]: Start isEmpty. Operand 41204 states and 62131 transitions. [2020-10-14 09:23:00,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-14 09:23:00,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:23:00,499 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:23:00,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:23:00,499 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:23:00,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:23:00,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1545929428, now seen corresponding path program 1 times [2020-10-14 09:23:00,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:23:00,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602498404] [2020-10-14 09:23:00,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:23:00,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:23:00,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:00,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:00,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:00,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:01,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:05,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:23:05,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 09:23:05,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:23:05,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5269 [2020-10-14 09:23:05,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:23:05,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:23:05,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:23:05,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-14 09:23:05,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 09:23:05,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:23:05,991 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 09:23:05,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:23:05,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:23:05,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:06,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:23:06,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:23:06,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:23:06,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:23:06,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:23:06,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:23:06,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:23:06,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:23:06,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:23:06,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:23:06,025 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:23:06,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602498404] [2020-10-14 09:23:06,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:23:06,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:23:06,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669338525] [2020-10-14 09:23:06,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:23:06,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:23:06,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:23:06,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:23:06,027 INFO L87 Difference]: Start difference. First operand 41204 states and 62131 transitions. Second operand 4 states. [2020-10-14 09:23:06,230 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-14 09:23:09,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:23:09,982 INFO L93 Difference]: Finished difference Result 119992 states and 180533 transitions. [2020-10-14 09:23:09,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:23:09,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-10-14 09:23:09,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:23:10,084 INFO L225 Difference]: With dead ends: 119992 [2020-10-14 09:23:10,085 INFO L226 Difference]: Without dead ends: 78838 [2020-10-14 09:23:10,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:23:10,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78838 states. [2020-10-14 09:23:15,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78838 to 78836. [2020-10-14 09:23:15,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78836 states. [2020-10-14 09:23:15,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78836 states to 78836 states and 117811 transitions. [2020-10-14 09:23:15,333 INFO L78 Accepts]: Start accepts. Automaton has 78836 states and 117811 transitions. Word has length 115 [2020-10-14 09:23:15,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:23:15,334 INFO L479 AbstractCegarLoop]: Abstraction has 78836 states and 117811 transitions. [2020-10-14 09:23:15,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:23:15,334 INFO L276 IsEmpty]: Start isEmpty. Operand 78836 states and 117811 transitions. [2020-10-14 09:23:15,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-14 09:23:15,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:23:15,350 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:23:15,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 09:23:15,351 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:23:15,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:23:15,351 INFO L82 PathProgramCache]: Analyzing trace with hash 940216799, now seen corresponding path program 1 times [2020-10-14 09:23:15,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:23:15,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266230973] [2020-10-14 09:23:15,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:23:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:23:15,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:15,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:15,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:15,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:16,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:20,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:23:20,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 09:23:20,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:23:20,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 09:23:20,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:23:20,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:23:20,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:23:20,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-14 09:23:20,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 09:23:20,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:23:20,684 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 09:23:20,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:23:20,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:23:20,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:20,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:23:20,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:23:20,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:23:20,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:23:20,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:23:20,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:23:20,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:23:20,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:23:20,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:23:20,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:23:20,712 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:23:20,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266230973] [2020-10-14 09:23:20,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:23:20,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:23:20,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993253501] [2020-10-14 09:23:20,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:23:20,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:23:20,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:23:20,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:23:20,714 INFO L87 Difference]: Start difference. First operand 78836 states and 117811 transitions. Second operand 4 states. [2020-10-14 09:23:20,906 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-14 09:23:29,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:23:29,602 INFO L93 Difference]: Finished difference Result 229368 states and 341813 transitions. [2020-10-14 09:23:29,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:23:29,603 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-10-14 09:23:29,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:23:29,796 INFO L225 Difference]: With dead ends: 229368 [2020-10-14 09:23:29,797 INFO L226 Difference]: Without dead ends: 150582 [2020-10-14 09:23:29,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:23:29,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150582 states. [2020-10-14 09:23:39,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150582 to 150580. [2020-10-14 09:23:39,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150580 states. [2020-10-14 09:23:39,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150580 states to 150580 states and 222771 transitions. [2020-10-14 09:23:39,670 INFO L78 Accepts]: Start accepts. Automaton has 150580 states and 222771 transitions. Word has length 115 [2020-10-14 09:23:39,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:23:39,670 INFO L479 AbstractCegarLoop]: Abstraction has 150580 states and 222771 transitions. [2020-10-14 09:23:39,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:23:39,671 INFO L276 IsEmpty]: Start isEmpty. Operand 150580 states and 222771 transitions. [2020-10-14 09:23:39,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-14 09:23:39,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:23:39,697 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:23:39,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 09:23:39,697 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:23:39,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:23:39,698 INFO L82 PathProgramCache]: Analyzing trace with hash 46032148, now seen corresponding path program 1 times [2020-10-14 09:23:39,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:23:39,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482142109] [2020-10-14 09:23:39,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:23:39,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:23:39,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:39,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:39,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:39,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:40,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:44,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:23:44,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 09:23:44,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:23:44,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 09:23:44,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:23:44,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:23:44,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:23:44,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-14 09:23:44,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 09:23:44,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:23:44,912 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 09:23:44,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:23:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:23:44,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:44,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:23:44,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:23:44,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:23:44,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 09:23:44,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:23:44,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:23:44,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:23:44,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:23:44,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:23:44,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:23:44,936 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:23:44,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482142109] [2020-10-14 09:23:44,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:23:44,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:23:44,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514912716] [2020-10-14 09:23:44,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:23:44,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:23:44,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:23:44,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:23:44,938 INFO L87 Difference]: Start difference. First operand 150580 states and 222771 transitions. Second operand 4 states. [2020-10-14 09:23:45,146 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-14 09:24:03,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:24:03,200 INFO L93 Difference]: Finished difference Result 437560 states and 645173 transitions. [2020-10-14 09:24:03,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:24:03,201 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-10-14 09:24:03,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:24:03,640 INFO L225 Difference]: With dead ends: 437560 [2020-10-14 09:24:03,640 INFO L226 Difference]: Without dead ends: 287030 [2020-10-14 09:24:03,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:24:03,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287030 states. [2020-10-14 09:24:22,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287030 to 287028. [2020-10-14 09:24:22,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287028 states. [2020-10-14 09:24:23,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287028 states to 287028 states and 419891 transitions. [2020-10-14 09:24:23,034 INFO L78 Accepts]: Start accepts. Automaton has 287028 states and 419891 transitions. Word has length 115 [2020-10-14 09:24:23,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:24:23,035 INFO L479 AbstractCegarLoop]: Abstraction has 287028 states and 419891 transitions. [2020-10-14 09:24:23,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:24:23,035 INFO L276 IsEmpty]: Start isEmpty. Operand 287028 states and 419891 transitions. [2020-10-14 09:24:23,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-14 09:24:23,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:24:23,064 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:24:23,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 09:24:23,064 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:24:23,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:24:23,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1432418701, now seen corresponding path program 1 times [2020-10-14 09:24:23,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:24:23,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663345744] [2020-10-14 09:24:23,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:24:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:24:23,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:24:23,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:24:23,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:24:24,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:24:24,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:24:30,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:24:30,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 09:24:30,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:24:30,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6940 [2020-10-14 09:24:30,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:24:30,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:24:30,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:24:30,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-14 09:24:30,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 09:24:30,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:24:30,218 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 09:24:30,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:24:30,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:24:30,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:24:30,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:24:30,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:24:30,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:24:30,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:24:30,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:24:30,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:24:30,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:24:30,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:24:30,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:24:30,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:24:30,248 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:24:30,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663345744] [2020-10-14 09:24:30,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:24:30,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:24:30,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874030822] [2020-10-14 09:24:30,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:24:30,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:24:30,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:24:30,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:24:30,250 INFO L87 Difference]: Start difference. First operand 287028 states and 419891 transitions. Second operand 4 states. [2020-10-14 09:24:30,450 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-14 09:25:04,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:25:04,321 INFO L93 Difference]: Finished difference Result 832824 states and 1213493 transitions. [2020-10-14 09:25:04,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:25:04,321 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-10-14 09:25:04,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:25:05,094 INFO L225 Difference]: With dead ends: 832824 [2020-10-14 09:25:05,095 INFO L226 Difference]: Without dead ends: 545846 [2020-10-14 09:25:05,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:25:05,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545846 states.