/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=BIGGEST --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.6.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:12:34,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:12:34,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:12:34,249 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:12:34,249 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:12:34,257 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:12:34,259 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:12:34,263 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:12:34,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:12:34,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:12:34,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:12:34,269 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:12:34,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:12:34,274 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:12:34,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:12:34,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:12:34,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:12:34,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:12:34,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:12:34,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:12:34,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:12:34,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:12:34,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:12:34,296 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:12:34,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:12:34,308 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:12:34,308 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:12:34,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:12:34,310 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:12:34,311 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:12:34,311 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:12:34,312 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:12:34,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:12:34,317 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:12:34,318 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:12:34,318 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:12:34,324 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:12:34,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:12:34,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:12:34,325 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:12:34,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:12:34,328 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 [2020-10-12 20:12:34,365 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:12:34,366 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:12:34,367 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:12:34,367 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:12:34,367 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:12:34,368 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:12:34,368 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:12:34,368 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:12:34,368 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:12:34,368 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:12:34,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:12:34,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:12:34,370 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:12:34,370 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:12:34,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:12:34,371 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:12:34,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:12:34,371 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:12:34,371 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:12:34,372 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:12:34,372 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:12:34,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:12:34,372 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:12:34,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:12:34,373 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:12:34,373 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:12:34,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:12:34,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:12:34,374 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:12:34,374 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 20:12:34,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:12:34,671 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:12:34,674 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:12:34,676 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:12:34,677 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:12:34,677 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 20:12:34,747 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/471d39f4f/0de6cdf5f66142b8bd75f7d4ab3893fd/FLAGd780ad47c [2020-10-12 20:12:35,257 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:12:35,257 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 20:12:35,277 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/471d39f4f/0de6cdf5f66142b8bd75f7d4ab3893fd/FLAGd780ad47c [2020-10-12 20:12:35,558 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/471d39f4f/0de6cdf5f66142b8bd75f7d4ab3893fd [2020-10-12 20:12:35,569 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:12:35,571 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:12:35,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:12:35,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:12:35,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:12:35,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:12:35" (1/1) ... [2020-10-12 20:12:35,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@212db271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:12:35, skipping insertion in model container [2020-10-12 20:12:35,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:12:35" (1/1) ... [2020-10-12 20:12:35,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:12:35,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:12:36,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:12:36,289 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:12:36,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:12:36,436 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:12:36,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:12:36 WrapperNode [2020-10-12 20:12:36,437 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:12:36,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:12:36,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:12:36,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:12:36,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:12:36" (1/1) ... [2020-10-12 20:12:36,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:12:36" (1/1) ... [2020-10-12 20:12:36,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:12:36" (1/1) ... [2020-10-12 20:12:36,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:12:36" (1/1) ... [2020-10-12 20:12:36,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:12:36" (1/1) ... [2020-10-12 20:12:36,524 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:12:36" (1/1) ... [2020-10-12 20:12:36,528 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:12:36" (1/1) ... [2020-10-12 20:12:36,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:12:36,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:12:36,546 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:12:36,546 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:12:36,547 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:12:36" (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 [2020-10-12 20:12:36,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:12:36,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:12:36,621 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:12:36,621 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:12:36,623 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:12:36,623 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:12:36,623 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:12:36,624 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 20:12:36,625 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:12:36,625 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:12:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:12:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:12:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:12:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:12:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:12:36,629 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:12:36,629 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 20:12:36,629 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 20:12:36,630 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-12 20:12:36,630 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:12:36,630 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:12:36,630 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:12:36,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:12:36,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:12:37,788 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:12:37,789 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:12:37,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:12:37 BoogieIcfgContainer [2020-10-12 20:12:37,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:12:37,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:12:37,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:12:37,800 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:12:37,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:12:35" (1/3) ... [2020-10-12 20:12:37,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c8097c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:12:37, skipping insertion in model container [2020-10-12 20:12:37,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:12:36" (2/3) ... [2020-10-12 20:12:37,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c8097c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:12:37, skipping insertion in model container [2020-10-12 20:12:37,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:12:37" (3/3) ... [2020-10-12 20:12:37,804 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 20:12:37,815 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:12:37,824 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:12:37,836 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:12:37,863 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:12:37,863 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:12:37,864 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:12:37,864 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:12:37,864 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:12:37,864 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:12:37,864 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:12:37,864 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:12:37,888 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states. [2020-10-12 20:12:37,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-12 20:12:37,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:12:37,901 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:12:37,901 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:12:37,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:12:37,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1546229831, now seen corresponding path program 1 times [2020-10-12 20:12:37,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:12:37,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532033459] [2020-10-12 20:12:37,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:12:38,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:38,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:38,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:38,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:43,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:43,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-12 20:12:43,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:12:43,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 20:12:43,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:43,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:12:43,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:12:43,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 20:12:43,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:12:43,810 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:12:43,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:12:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:43,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:43,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:43,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:12:43,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:12:43,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 20:12:43,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:43,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:12:43,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:12:43,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:12:43,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:12:43,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:12:43,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532033459] [2020-10-12 20:12:43,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:12:43,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 20:12:43,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726855015] [2020-10-12 20:12:43,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:12:43,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:12:43,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:12:43,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:12:43,911 INFO L87 Difference]: Start difference. First operand 254 states. Second operand 9 states. [2020-10-12 20:12:44,406 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:12:46,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:12:46,445 INFO L93 Difference]: Finished difference Result 1131 states and 1827 transitions. [2020-10-12 20:12:46,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 20:12:46,447 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2020-10-12 20:12:46,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:12:46,470 INFO L225 Difference]: With dead ends: 1131 [2020-10-12 20:12:46,471 INFO L226 Difference]: Without dead ends: 987 [2020-10-12 20:12:46,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-12 20:12:46,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2020-10-12 20:12:46,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 385. [2020-10-12 20:12:46,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-10-12 20:12:46,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 576 transitions. [2020-10-12 20:12:46,565 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 576 transitions. Word has length 99 [2020-10-12 20:12:46,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:12:46,566 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 576 transitions. [2020-10-12 20:12:46,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:12:46,566 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 576 transitions. [2020-10-12 20:12:46,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-12 20:12:46,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:12:46,571 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:12:46,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:12:46,571 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:12:46,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:12:46,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1013626043, now seen corresponding path program 1 times [2020-10-12 20:12:46,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:12:46,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267849218] [2020-10-12 20:12:46,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:12:46,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:46,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:47,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:48,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:48,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 20:12:48,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:12:48,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1407 [2020-10-12 20:12:48,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:48,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:12:48,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 20:12:48,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 20:12:48,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:12:48,436 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:12:48,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:12:48,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:48,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:48,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:48,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:12:48,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:12:48,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:12:48,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:48,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:12:48,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:12:48,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:12:48,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:12:48,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:12:48,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267849218] [2020-10-12 20:12:48,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:12:48,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 20:12:48,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553949660] [2020-10-12 20:12:48,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:12:48,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:12:48,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:12:48,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:12:48,535 INFO L87 Difference]: Start difference. First operand 385 states and 576 transitions. Second operand 9 states. [2020-10-12 20:12:51,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:12:51,264 INFO L93 Difference]: Finished difference Result 1912 states and 2972 transitions. [2020-10-12 20:12:51,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 20:12:51,266 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 100 [2020-10-12 20:12:51,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:12:51,276 INFO L225 Difference]: With dead ends: 1912 [2020-10-12 20:12:51,276 INFO L226 Difference]: Without dead ends: 1626 [2020-10-12 20:12:51,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:12:51,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1626 states. [2020-10-12 20:12:51,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1626 to 1616. [2020-10-12 20:12:51,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1616 states. [2020-10-12 20:12:51,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 2505 transitions. [2020-10-12 20:12:51,413 INFO L78 Accepts]: Start accepts. Automaton has 1616 states and 2505 transitions. Word has length 100 [2020-10-12 20:12:51,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:12:51,415 INFO L479 AbstractCegarLoop]: Abstraction has 1616 states and 2505 transitions. [2020-10-12 20:12:51,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:12:51,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 2505 transitions. [2020-10-12 20:12:51,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-12 20:12:51,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:12:51,424 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:12:51,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:12:51,424 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:12:51,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:12:51,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1336244156, now seen corresponding path program 1 times [2020-10-12 20:12:51,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:12:51,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478516301] [2020-10-12 20:12:51,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:12:51,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:51,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:51,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:52,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:52,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 20:12:52,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:12:52,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 707 [2020-10-12 20:12:52,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:52,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:12:52,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:12:52,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-12 20:12:52,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:12:52,478 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:12:52,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:12:52,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:52,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:52,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:52,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:12:52,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:12:52,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 20:12:52,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:52,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:12:52,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:12:52,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:12:52,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:12:52,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:12:52,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478516301] [2020-10-12 20:12:52,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:12:52,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:12:52,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685784858] [2020-10-12 20:12:52,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:12:52,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:12:52,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:12:52,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:12:52,545 INFO L87 Difference]: Start difference. First operand 1616 states and 2505 transitions. Second operand 6 states. [2020-10-12 20:12:52,772 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:12:54,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:12:54,254 INFO L93 Difference]: Finished difference Result 4262 states and 6685 transitions. [2020-10-12 20:12:54,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:12:54,255 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-10-12 20:12:54,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:12:54,275 INFO L225 Difference]: With dead ends: 4262 [2020-10-12 20:12:54,276 INFO L226 Difference]: Without dead ends: 2766 [2020-10-12 20:12:54,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:12:54,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2020-10-12 20:12:54,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 2764. [2020-10-12 20:12:54,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2764 states. [2020-10-12 20:12:54,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 4310 transitions. [2020-10-12 20:12:54,479 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 4310 transitions. Word has length 101 [2020-10-12 20:12:54,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:12:54,481 INFO L479 AbstractCegarLoop]: Abstraction has 2764 states and 4310 transitions. [2020-10-12 20:12:54,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:12:54,482 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 4310 transitions. [2020-10-12 20:12:54,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-12 20:12:54,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:12:54,491 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:12:54,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:12:54,492 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:12:54,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:12:54,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1100804725, now seen corresponding path program 1 times [2020-10-12 20:12:54,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:12:54,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75834895] [2020-10-12 20:12:54,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:12:54,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:54,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:54,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:55,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:55,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 20:12:55,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:12:55,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 697 [2020-10-12 20:12:55,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:55,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:12:55,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:12:55,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 20:12:55,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 20:12:55,595 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:12:55,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:12:55,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:55,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:55,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:55,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:12:55,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:12:55,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 20:12:55,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:55,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:12:55,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:12:55,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:12:55,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-12 20:12:55,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:12:55,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75834895] [2020-10-12 20:12:55,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:12:55,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:12:55,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628221627] [2020-10-12 20:12:55,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:12:55,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:12:55,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:12:55,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:12:55,677 INFO L87 Difference]: Start difference. First operand 2764 states and 4310 transitions. Second operand 6 states. [2020-10-12 20:12:55,904 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-12 20:12:57,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:12:57,284 INFO L93 Difference]: Finished difference Result 7547 states and 11851 transitions. [2020-10-12 20:12:57,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:12:57,285 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-10-12 20:12:57,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:12:57,311 INFO L225 Difference]: With dead ends: 7547 [2020-10-12 20:12:57,311 INFO L226 Difference]: Without dead ends: 4940 [2020-10-12 20:12:57,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:12:57,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4940 states. [2020-10-12 20:12:57,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4940 to 4938. [2020-10-12 20:12:57,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4938 states. [2020-10-12 20:12:57,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4938 states to 4938 states and 7706 transitions. [2020-10-12 20:12:57,674 INFO L78 Accepts]: Start accepts. Automaton has 4938 states and 7706 transitions. Word has length 101 [2020-10-12 20:12:57,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:12:57,676 INFO L479 AbstractCegarLoop]: Abstraction has 4938 states and 7706 transitions. [2020-10-12 20:12:57,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:12:57,676 INFO L276 IsEmpty]: Start isEmpty. Operand 4938 states and 7706 transitions. [2020-10-12 20:12:57,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-12 20:12:57,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:12:57,680 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:12:57,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:12:57,680 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:12:57,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:12:57,681 INFO L82 PathProgramCache]: Analyzing trace with hash 2044606298, now seen corresponding path program 1 times [2020-10-12 20:12:57,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:12:57,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351561513] [2020-10-12 20:12:57,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:12:57,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:57,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:57,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:58,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:58,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 20:12:58,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:12:58,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 827 [2020-10-12 20:12:58,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:58,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:12:58,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:12:58,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 20:12:58,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:12:58,775 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:12:58,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:12:58,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:12:58,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:12:58,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:12:58,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:12:58,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:12:58,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 20:12:58,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:12:58,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:12:58,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:12:58,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:12:58,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:12:58,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:12:58,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351561513] [2020-10-12 20:12:58,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:12:58,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:12:58,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413168169] [2020-10-12 20:12:58,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:12:58,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:12:58,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:12:58,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:12:58,839 INFO L87 Difference]: Start difference. First operand 4938 states and 7706 transitions. Second operand 6 states. [2020-10-12 20:12:59,074 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:13:00,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:13:00,586 INFO L93 Difference]: Finished difference Result 14012 states and 22006 transitions. [2020-10-12 20:13:00,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:13:00,587 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-10-12 20:13:00,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:13:00,632 INFO L225 Difference]: With dead ends: 14012 [2020-10-12 20:13:00,632 INFO L226 Difference]: Without dead ends: 9272 [2020-10-12 20:13:00,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:13:00,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9272 states. [2020-10-12 20:13:01,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9272 to 9270. [2020-10-12 20:13:01,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9270 states. [2020-10-12 20:13:01,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9270 states to 9270 states and 14496 transitions. [2020-10-12 20:13:01,318 INFO L78 Accepts]: Start accepts. Automaton has 9270 states and 14496 transitions. Word has length 101 [2020-10-12 20:13:01,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:13:01,319 INFO L479 AbstractCegarLoop]: Abstraction has 9270 states and 14496 transitions. [2020-10-12 20:13:01,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:13:01,319 INFO L276 IsEmpty]: Start isEmpty. Operand 9270 states and 14496 transitions. [2020-10-12 20:13:01,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-12 20:13:01,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:13:01,324 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:13:01,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:13:01,324 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:13:01,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:13:01,325 INFO L82 PathProgramCache]: Analyzing trace with hash 714946029, now seen corresponding path program 1 times [2020-10-12 20:13:01,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:13:01,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665570994] [2020-10-12 20:13:01,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:13:01,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:13:01,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:01,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:01,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:13:01,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 20:13:01,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:13:01,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 530 [2020-10-12 20:13:01,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:13:01,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:13:01,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:13:01,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 20:13:01,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 20:13:02,126 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:13:02,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:13:02,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:13:02,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:02,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:13:02,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:13:02,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:13:02,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 20:13:02,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:13:02,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:13:02,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:13:02,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:13:02,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:13:02,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:13:02,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665570994] [2020-10-12 20:13:02,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:13:02,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:13:02,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150257428] [2020-10-12 20:13:02,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:13:02,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:13:02,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:13:02,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:13:02,203 INFO L87 Difference]: Start difference. First operand 9270 states and 14496 transitions. Second operand 6 states. [2020-10-12 20:13:02,507 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-12 20:13:04,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:13:04,828 INFO L93 Difference]: Finished difference Result 27180 states and 42540 transitions. [2020-10-12 20:13:04,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:13:04,828 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-10-12 20:13:04,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:13:04,884 INFO L225 Difference]: With dead ends: 27180 [2020-10-12 20:13:04,885 INFO L226 Difference]: Without dead ends: 18000 [2020-10-12 20:13:04,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:13:04,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18000 states. [2020-10-12 20:13:05,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18000 to 17998. [2020-10-12 20:13:05,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17998 states. [2020-10-12 20:13:05,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17998 states to 17998 states and 28004 transitions. [2020-10-12 20:13:05,922 INFO L78 Accepts]: Start accepts. Automaton has 17998 states and 28004 transitions. Word has length 101 [2020-10-12 20:13:05,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:13:05,923 INFO L479 AbstractCegarLoop]: Abstraction has 17998 states and 28004 transitions. [2020-10-12 20:13:05,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:13:05,923 INFO L276 IsEmpty]: Start isEmpty. Operand 17998 states and 28004 transitions. [2020-10-12 20:13:05,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-12 20:13:05,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:13:05,930 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:13:05,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:13:05,931 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:13:05,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:13:05,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1132595230, now seen corresponding path program 1 times [2020-10-12 20:13:05,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:13:05,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457492991] [2020-10-12 20:13:05,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:13:05,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:13:05,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:06,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:06,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:13:06,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 20:13:06,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:13:06,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 517 [2020-10-12 20:13:06,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:13:06,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:13:06,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:13:06,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 20:13:06,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:13:06,732 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:13:06,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:13:06,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:13:06,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:06,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:13:06,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:13:06,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:13:06,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 20:13:06,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:13:06,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:13:06,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:13:06,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:13:06,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:13:06,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:13:06,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457492991] [2020-10-12 20:13:06,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:13:06,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:13:06,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923940745] [2020-10-12 20:13:06,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:13:06,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:13:06,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:13:06,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:13:06,799 INFO L87 Difference]: Start difference. First operand 17998 states and 28004 transitions. Second operand 6 states. [2020-10-12 20:13:07,026 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-12 20:13:10,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:13:10,188 INFO L93 Difference]: Finished difference Result 53275 states and 82853 transitions. [2020-10-12 20:13:10,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:13:10,188 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-10-12 20:13:10,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:13:10,280 INFO L225 Difference]: With dead ends: 53275 [2020-10-12 20:13:10,280 INFO L226 Difference]: Without dead ends: 35344 [2020-10-12 20:13:10,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:13:10,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35344 states. [2020-10-12 20:13:12,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35344 to 35342. [2020-10-12 20:13:12,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35342 states. [2020-10-12 20:13:12,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35342 states to 35342 states and 54601 transitions. [2020-10-12 20:13:12,379 INFO L78 Accepts]: Start accepts. Automaton has 35342 states and 54601 transitions. Word has length 101 [2020-10-12 20:13:12,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:13:12,379 INFO L479 AbstractCegarLoop]: Abstraction has 35342 states and 54601 transitions. [2020-10-12 20:13:12,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:13:12,380 INFO L276 IsEmpty]: Start isEmpty. Operand 35342 states and 54601 transitions. [2020-10-12 20:13:12,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 20:13:12,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:13:12,389 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:13:12,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:13:12,390 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:13:12,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:13:12,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1989852954, now seen corresponding path program 1 times [2020-10-12 20:13:12,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:13:12,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391807172] [2020-10-12 20:13:12,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:13:12,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:13:12,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:12,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:12,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:14,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:13:14,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 20:13:14,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:13:14,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1801 [2020-10-12 20:13:14,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:13:14,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:13:14,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:13:14,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-12 20:13:14,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:13:14,683 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:13:14,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:13:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:13:14,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:14,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:13:14,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:13:14,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:13:14,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 20:13:14,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:13:14,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:13:14,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:13:14,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:13:14,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:13:14,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:13:14,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391807172] [2020-10-12 20:13:14,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:13:14,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:13:14,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554682443] [2020-10-12 20:13:14,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:13:14,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:13:14,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:13:14,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:13:14,773 INFO L87 Difference]: Start difference. First operand 35342 states and 54601 transitions. Second operand 11 states. [2020-10-12 20:13:15,391 WARN L193 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 181 [2020-10-12 20:13:31,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:13:31,282 INFO L93 Difference]: Finished difference Result 254871 states and 391288 transitions. [2020-10-12 20:13:31,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-12 20:13:31,283 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 102 [2020-10-12 20:13:31,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:13:31,772 INFO L225 Difference]: With dead ends: 254871 [2020-10-12 20:13:31,773 INFO L226 Difference]: Without dead ends: 239229 [2020-10-12 20:13:31,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=344, Invalid=1296, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 20:13:32,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239229 states. [2020-10-12 20:13:37,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239229 to 35695. [2020-10-12 20:13:37,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35695 states. [2020-10-12 20:13:37,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35695 states to 35695 states and 55100 transitions. [2020-10-12 20:13:37,731 INFO L78 Accepts]: Start accepts. Automaton has 35695 states and 55100 transitions. Word has length 102 [2020-10-12 20:13:37,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:13:37,731 INFO L479 AbstractCegarLoop]: Abstraction has 35695 states and 55100 transitions. [2020-10-12 20:13:37,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:13:37,731 INFO L276 IsEmpty]: Start isEmpty. Operand 35695 states and 55100 transitions. [2020-10-12 20:13:37,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 20:13:37,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:13:37,743 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:13:37,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:13:37,743 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:13:37,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:13:37,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1014482054, now seen corresponding path program 1 times [2020-10-12 20:13:37,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:13:37,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436545477] [2020-10-12 20:13:37,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:13:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:13:37,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:37,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:38,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:40,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:13:40,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 20:13:40,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:13:40,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2289 [2020-10-12 20:13:40,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:13:40,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:13:40,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:13:40,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 20:13:40,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:13:40,435 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:13:40,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:13:40,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:13:40,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:13:40,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:13:40,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:13:40,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:13:40,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 20:13:40,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:13:40,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:13:40,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:13:40,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:13:40,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:13:40,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:13:40,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436545477] [2020-10-12 20:13:40,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:13:40,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:13:40,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101990858] [2020-10-12 20:13:40,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:13:40,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:13:40,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:13:40,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:13:40,509 INFO L87 Difference]: Start difference. First operand 35695 states and 55100 transitions. Second operand 11 states. [2020-10-12 20:13:40,784 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:14:00,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:14:00,962 INFO L93 Difference]: Finished difference Result 199245 states and 307186 transitions. [2020-10-12 20:14:00,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-12 20:14:00,963 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 102 [2020-10-12 20:14:00,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:14:01,257 INFO L225 Difference]: With dead ends: 199245 [2020-10-12 20:14:01,257 INFO L226 Difference]: Without dead ends: 186539 [2020-10-12 20:14:01,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=308, Invalid=1098, Unknown=0, NotChecked=0, Total=1406 [2020-10-12 20:14:01,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186539 states. [2020-10-12 20:14:04,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186539 to 36365. [2020-10-12 20:14:04,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36365 states. [2020-10-12 20:14:05,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36365 states to 36365 states and 56062 transitions. [2020-10-12 20:14:05,006 INFO L78 Accepts]: Start accepts. Automaton has 36365 states and 56062 transitions. Word has length 102 [2020-10-12 20:14:05,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:14:05,006 INFO L479 AbstractCegarLoop]: Abstraction has 36365 states and 56062 transitions. [2020-10-12 20:14:05,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:14:05,006 INFO L276 IsEmpty]: Start isEmpty. Operand 36365 states and 56062 transitions. [2020-10-12 20:14:05,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 20:14:05,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:14:05,017 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:14:05,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:14:05,018 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:14:05,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:14:05,018 INFO L82 PathProgramCache]: Analyzing trace with hash -2064812070, now seen corresponding path program 1 times [2020-10-12 20:14:05,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:14:05,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [527104278] [2020-10-12 20:14:05,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:14:05,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:14:05,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:05,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:05,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:07,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:14:07,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 20:14:07,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:14:07,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2701 [2020-10-12 20:14:07,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:14:07,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:14:07,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:14:07,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 20:14:07,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:14:08,080 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:14:08,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:14:08,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:14:08,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:08,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:14:08,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:14:08,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:14:08,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 20:14:08,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:14:08,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:14:08,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:14:08,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:14:08,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:14:08,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:14:08,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [527104278] [2020-10-12 20:14:08,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:14:08,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:14:08,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145550773] [2020-10-12 20:14:08,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:14:08,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:14:08,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:14:08,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:14:08,166 INFO L87 Difference]: Start difference. First operand 36365 states and 56062 transitions. Second operand 11 states. [2020-10-12 20:14:08,427 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-12 20:14:19,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:14:19,521 INFO L93 Difference]: Finished difference Result 89832 states and 137642 transitions. [2020-10-12 20:14:19,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 20:14:19,522 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 102 [2020-10-12 20:14:19,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:14:19,618 INFO L225 Difference]: With dead ends: 89832 [2020-10-12 20:14:19,618 INFO L226 Difference]: Without dead ends: 85877 [2020-10-12 20:14:19,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2020-10-12 20:14:19,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85877 states. [2020-10-12 20:14:23,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85877 to 36365. [2020-10-12 20:14:23,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36365 states. [2020-10-12 20:14:23,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36365 states to 36365 states and 56058 transitions. [2020-10-12 20:14:23,249 INFO L78 Accepts]: Start accepts. Automaton has 36365 states and 56058 transitions. Word has length 102 [2020-10-12 20:14:23,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:14:23,250 INFO L479 AbstractCegarLoop]: Abstraction has 36365 states and 56058 transitions. [2020-10-12 20:14:23,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:14:23,250 INFO L276 IsEmpty]: Start isEmpty. Operand 36365 states and 56058 transitions. [2020-10-12 20:14:23,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 20:14:23,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:14:23,260 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:14:23,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:14:23,261 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:14:23,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:14:23,261 INFO L82 PathProgramCache]: Analyzing trace with hash -662895942, now seen corresponding path program 1 times [2020-10-12 20:14:23,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:14:23,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166433104] [2020-10-12 20:14:23,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:14:23,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:14:23,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:23,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:23,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:25,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:14:25,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 20:14:25,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:14:25,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1853 [2020-10-12 20:14:25,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:14:25,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:14:25,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:14:25,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-12 20:14:25,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:14:25,516 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:14:25,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:14:25,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:14:25,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:25,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:14:25,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:14:25,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:14:25,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 20:14:25,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:14:25,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:14:25,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:14:25,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:14:25,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:14:25,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:14:25,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166433104] [2020-10-12 20:14:25,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:14:25,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:14:25,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171958668] [2020-10-12 20:14:25,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:14:25,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:14:25,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:14:25,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:14:25,593 INFO L87 Difference]: Start difference. First operand 36365 states and 56058 transitions. Second operand 11 states. [2020-10-12 20:14:25,854 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-12 20:15:00,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:15:00,052 INFO L93 Difference]: Finished difference Result 317990 states and 492035 transitions. [2020-10-12 20:15:00,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-12 20:15:00,053 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 102 [2020-10-12 20:15:00,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:15:00,515 INFO L225 Difference]: With dead ends: 317990 [2020-10-12 20:15:00,515 INFO L226 Difference]: Without dead ends: 293556 [2020-10-12 20:15:00,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=398, Invalid=1324, Unknown=0, NotChecked=0, Total=1722 [2020-10-12 20:15:00,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293556 states. [2020-10-12 20:15:08,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293556 to 36950. [2020-10-12 20:15:08,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36950 states. [2020-10-12 20:15:08,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36950 states to 36950 states and 56853 transitions. [2020-10-12 20:15:08,840 INFO L78 Accepts]: Start accepts. Automaton has 36950 states and 56853 transitions. Word has length 102 [2020-10-12 20:15:08,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:15:08,840 INFO L479 AbstractCegarLoop]: Abstraction has 36950 states and 56853 transitions. [2020-10-12 20:15:08,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:15:08,840 INFO L276 IsEmpty]: Start isEmpty. Operand 36950 states and 56853 transitions. [2020-10-12 20:15:08,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 20:15:08,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:15:08,850 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:15:08,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 20:15:08,851 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:15:08,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:15:08,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1535575642, now seen corresponding path program 1 times [2020-10-12 20:15:08,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:15:08,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106498323] [2020-10-12 20:15:08,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:15:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:15:08,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:08,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:09,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:11,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:15:11,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 20:15:11,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:15:11,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2216 [2020-10-12 20:15:11,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:15:11,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:15:11,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:15:11,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 20:15:11,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:15:11,458 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:15:11,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:15:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:15:11,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:11,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:15:11,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:15:11,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:15:11,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:15:11,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:15:11,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:15:11,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:15:11,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:15:11,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:15:11,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:15:11,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106498323] [2020-10-12 20:15:11,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:15:11,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:15:11,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674326001] [2020-10-12 20:15:11,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:15:11,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:15:11,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:15:11,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:15:11,522 INFO L87 Difference]: Start difference. First operand 36950 states and 56853 transitions. Second operand 11 states. [2020-10-12 20:15:11,800 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:15:47,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:15:47,868 INFO L93 Difference]: Finished difference Result 279674 states and 431796 transitions. [2020-10-12 20:15:47,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-12 20:15:47,869 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 102 [2020-10-12 20:15:47,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:15:48,256 INFO L225 Difference]: With dead ends: 279674 [2020-10-12 20:15:48,256 INFO L226 Difference]: Without dead ends: 249822 [2020-10-12 20:15:48,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=273, Invalid=917, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 20:15:48,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249822 states. [2020-10-12 20:15:54,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249822 to 37605. [2020-10-12 20:15:54,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37605 states. [2020-10-12 20:15:54,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37605 states to 37605 states and 57707 transitions. [2020-10-12 20:15:54,742 INFO L78 Accepts]: Start accepts. Automaton has 37605 states and 57707 transitions. Word has length 102 [2020-10-12 20:15:54,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:15:54,742 INFO L479 AbstractCegarLoop]: Abstraction has 37605 states and 57707 transitions. [2020-10-12 20:15:54,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:15:54,743 INFO L276 IsEmpty]: Start isEmpty. Operand 37605 states and 57707 transitions. [2020-10-12 20:15:54,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 20:15:54,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:15:54,752 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:15:54,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 20:15:54,752 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:15:54,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:15:54,753 INFO L82 PathProgramCache]: Analyzing trace with hash -886647427, now seen corresponding path program 1 times [2020-10-12 20:15:54,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:15:54,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529945994] [2020-10-12 20:15:54,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:15:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:15:54,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:54,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:55,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:15:55,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 20:15:55,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:15:55,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-10-12 20:15:55,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:15:55,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:15:55,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:15:55,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 20:15:55,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:15:55,355 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:15:55,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:15:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:15:55,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:55,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:15:55,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:15:55,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:15:55,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 20:15:55,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:15:55,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:15:55,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:15:55,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:15:55,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:15:55,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:15:55,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529945994] [2020-10-12 20:15:55,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:15:55,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:15:55,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256256066] [2020-10-12 20:15:55,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:15:55,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:15:55,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:15:55,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:15:55,396 INFO L87 Difference]: Start difference. First operand 37605 states and 57707 transitions. Second operand 6 states. [2020-10-12 20:15:55,636 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-12 20:16:06,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:16:06,858 INFO L93 Difference]: Finished difference Result 111046 states and 170482 transitions. [2020-10-12 20:16:06,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:16:06,859 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-12 20:16:06,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:16:06,958 INFO L225 Difference]: With dead ends: 111046 [2020-10-12 20:16:06,958 INFO L226 Difference]: Without dead ends: 73524 [2020-10-12 20:16:06,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:16:07,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73524 states. [2020-10-12 20:16:18,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73524 to 73522. [2020-10-12 20:16:18,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73522 states. [2020-10-12 20:16:18,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73522 states to 73522 states and 112482 transitions. [2020-10-12 20:16:18,560 INFO L78 Accepts]: Start accepts. Automaton has 73522 states and 112482 transitions. Word has length 102 [2020-10-12 20:16:18,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:16:18,560 INFO L479 AbstractCegarLoop]: Abstraction has 73522 states and 112482 transitions. [2020-10-12 20:16:18,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:16:18,560 INFO L276 IsEmpty]: Start isEmpty. Operand 73522 states and 112482 transitions. [2020-10-12 20:16:18,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-12 20:16:18,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:16:18,577 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:16:18,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 20:16:18,577 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:16:18,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:16:18,577 INFO L82 PathProgramCache]: Analyzing trace with hash 846925288, now seen corresponding path program 1 times [2020-10-12 20:16:18,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:16:18,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130820333] [2020-10-12 20:16:18,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:16:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:18,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:18,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:18,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 20:16:18,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:16:18,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-12 20:16:18,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:18,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:16:18,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-12 20:16:18,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 20:16:18,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:16:18,948 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:16:18,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:16:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:18,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:18,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:18,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:16:18,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:16:18,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 20:16:18,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:18,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:16:18,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:16:18,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:16:18,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:16:18,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:16:18,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130820333] [2020-10-12 20:16:18,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:16:18,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:16:18,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385101816] [2020-10-12 20:16:18,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:16:18,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:16:18,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:16:18,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:16:18,979 INFO L87 Difference]: Start difference. First operand 73522 states and 112482 transitions. Second operand 5 states.