/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:55:40,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:55:40,592 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:55:40,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:55:40,615 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:55:40,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:55:40,617 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:55:40,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:55:40,620 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:55:40,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:55:40,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:55:40,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:55:40,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:55:40,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:55:40,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:55:40,626 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:55:40,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:55:40,628 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:55:40,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:55:40,631 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:55:40,633 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:55:40,634 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:55:40,636 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:55:40,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:55:40,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:55:40,639 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:55:40,640 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:55:40,640 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:55:40,641 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:55:40,642 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:55:40,642 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:55:40,643 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:55:40,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:55:40,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:55:40,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:55:40,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:55:40,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:55:40,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:55:40,646 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:55:40,647 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:55:40,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:55:40,648 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 [2020-10-15 03:55:40,676 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:55:40,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:55:40,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:55:40,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:55:40,678 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:55:40,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:55:40,679 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:55:40,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:55:40,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:55:40,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:55:40,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:55:40,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:55:40,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:55:40,680 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:55:40,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:55:40,680 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:55:40,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:55:40,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:55:40,681 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:55:40,681 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:55:40,681 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:55:40,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:55:40,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:55:40,682 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:55:40,682 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:55:40,682 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:55:40,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:55:40,683 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:55:40,683 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:55:40,683 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:55:41,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:55:41,013 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:55:41,017 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:55:41,018 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:55:41,019 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:55:41,020 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-15 03:55:41,080 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a02367cfb/7380eca631154fd1b2831edd4e60761f/FLAGe48f1fc1b [2020-10-15 03:55:41,538 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:55:41,539 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-15 03:55:41,549 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a02367cfb/7380eca631154fd1b2831edd4e60761f/FLAGe48f1fc1b [2020-10-15 03:55:41,905 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a02367cfb/7380eca631154fd1b2831edd4e60761f [2020-10-15 03:55:41,915 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:55:41,917 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:55:41,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:55:41,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:55:41,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:55:41,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:55:41" (1/1) ... [2020-10-15 03:55:41,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bf2a9e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:55:41, skipping insertion in model container [2020-10-15 03:55:41,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:55:41" (1/1) ... [2020-10-15 03:55:41,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:55:41,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:55:42,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:55:42,338 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:55:42,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:55:42,440 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:55:42,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:55:42 WrapperNode [2020-10-15 03:55:42,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:55:42,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:55:42,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:55:42,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:55:42,453 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:55:42" (1/1) ... [2020-10-15 03:55:42,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:55:42" (1/1) ... [2020-10-15 03:55:42,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:55:42" (1/1) ... [2020-10-15 03:55:42,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:55:42" (1/1) ... [2020-10-15 03:55:42,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:55:42" (1/1) ... [2020-10-15 03:55:42,489 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:55:42" (1/1) ... [2020-10-15 03:55:42,492 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:55:42" (1/1) ... [2020-10-15 03:55:42,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:55:42,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:55:42,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:55:42,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:55:42,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:55:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:55:42,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:55:42,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:55:42,562 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:55:42,562 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:55:42,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:55:42,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:55:42,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:55:42,562 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:55:42,562 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:55:42,563 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:55:42,563 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:55:42,563 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:55:42,563 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:55:42,563 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:55:42,563 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:55:42,564 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:55:42,564 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 03:55:42,564 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:55:42,564 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:55:42,564 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:55:42,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:55:42,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:55:43,334 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:55:43,335 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:55:43,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:55:43 BoogieIcfgContainer [2020-10-15 03:55:43,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:55:43,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:55:43,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:55:43,346 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:55:43,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:55:41" (1/3) ... [2020-10-15 03:55:43,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431fff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:55:43, skipping insertion in model container [2020-10-15 03:55:43,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:55:42" (2/3) ... [2020-10-15 03:55:43,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431fff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:55:43, skipping insertion in model container [2020-10-15 03:55:43,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:55:43" (3/3) ... [2020-10-15 03:55:43,350 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-15 03:55:43,361 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:55:43,370 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:55:43,385 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:55:43,414 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:55:43,414 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:55:43,414 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:55:43,414 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:55:43,415 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:55:43,415 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:55:43,415 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:55:43,416 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:55:43,439 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states. [2020-10-15 03:55:43,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-15 03:55:43,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:55:43,451 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] [2020-10-15 03:55:43,452 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:55:43,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:55:43,458 INFO L82 PathProgramCache]: Analyzing trace with hash -153114197, now seen corresponding path program 1 times [2020-10-15 03:55:43,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:55:43,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367622893] [2020-10-15 03:55:43,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:55:43,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:55:43,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:44,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:44,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:44,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:44,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:45,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:48,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:55:48,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 03:55:48,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:55:48,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 03:55:48,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:55:48,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:55:48,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:55:48,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:55:48,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-15 03:55:48,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 03:55:49,130 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:55:49,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:55:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:55:49,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:49,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:55:49,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:55:49,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:55:49,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:55:49,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:55:49,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:55:49,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:55:49,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:55:49,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:55:49,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:55:49,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:55:49,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367622893] [2020-10-15 03:55:49,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:55:49,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:55:49,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273266075] [2020-10-15 03:55:49,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:55:49,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:55:49,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:55:49,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:55:49,203 INFO L87 Difference]: Start difference. First operand 141 states. Second operand 8 states. [2020-10-15 03:55:49,468 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-15 03:55:50,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:55:50,751 INFO L93 Difference]: Finished difference Result 753 states and 1199 transitions. [2020-10-15 03:55:50,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:55:50,754 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 64 [2020-10-15 03:55:50,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:55:50,799 INFO L225 Difference]: With dead ends: 753 [2020-10-15 03:55:50,799 INFO L226 Difference]: Without dead ends: 627 [2020-10-15 03:55:50,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-15 03:55:50,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-10-15 03:55:50,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 233. [2020-10-15 03:55:50,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-10-15 03:55:50,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 348 transitions. [2020-10-15 03:55:50,947 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 348 transitions. Word has length 64 [2020-10-15 03:55:50,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:55:50,948 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 348 transitions. [2020-10-15 03:55:50,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:55:50,948 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 348 transitions. [2020-10-15 03:55:50,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-15 03:55:50,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:55:50,965 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] [2020-10-15 03:55:50,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:55:50,966 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:55:50,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:55:50,967 INFO L82 PathProgramCache]: Analyzing trace with hash -470105524, now seen corresponding path program 1 times [2020-10-15 03:55:50,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:55:50,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232054997] [2020-10-15 03:55:50,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:55:51,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:55:51,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:51,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:51,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:51,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:51,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:52,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:54,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:55:54,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-15 03:55:54,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:55:54,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3889 [2020-10-15 03:55:54,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:55:54,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:55:54,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:55:54,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-15 03:55:54,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 03:55:54,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:55:55,164 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:55:55,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:55:55,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:55:55,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:55,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:55:55,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:55:55,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:55:55,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:55:55,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:55:55,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:55:55,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:55:55,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:55:55,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:55:55,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:55:55,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:55:55,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232054997] [2020-10-15 03:55:55,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:55:55,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:55:55,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264243875] [2020-10-15 03:55:55,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:55:55,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:55:55,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:55:55,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:55:55,208 INFO L87 Difference]: Start difference. First operand 233 states and 348 transitions. Second operand 4 states. [2020-10-15 03:55:55,389 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-15 03:55:55,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:55:55,927 INFO L93 Difference]: Finished difference Result 589 states and 914 transitions. [2020-10-15 03:55:55,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:55:55,928 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-10-15 03:55:55,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:55:55,931 INFO L225 Difference]: With dead ends: 589 [2020-10-15 03:55:55,931 INFO L226 Difference]: Without dead ends: 395 [2020-10-15 03:55:55,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:55:55,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-10-15 03:55:55,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 393. [2020-10-15 03:55:55,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-10-15 03:55:55,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 602 transitions. [2020-10-15 03:55:55,974 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 602 transitions. Word has length 65 [2020-10-15 03:55:55,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:55:55,974 INFO L479 AbstractCegarLoop]: Abstraction has 393 states and 602 transitions. [2020-10-15 03:55:55,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:55:55,975 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 602 transitions. [2020-10-15 03:55:55,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-15 03:55:55,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:55:55,976 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] [2020-10-15 03:55:55,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:55:55,977 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:55:55,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:55:55,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1895130856, now seen corresponding path program 1 times [2020-10-15 03:55:55,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:55:55,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531698860] [2020-10-15 03:55:55,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:55:56,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:55:56,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:56,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:56,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:56,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:56,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:58,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:55:58,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-15 03:55:58,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:55:58,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2188 [2020-10-15 03:55:58,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:55:58,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:55:58,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:55:58,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-15 03:55:58,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 03:55:58,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:55:58,427 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:55:58,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:55:58,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:55:58,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:58,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:55:58,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:55:58,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:55:58,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:55:58,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:55:58,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:55:58,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:55:58,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:55:58,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:55:58,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:55:58,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:55:58,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531698860] [2020-10-15 03:55:58,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:55:58,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:55:58,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338837165] [2020-10-15 03:55:58,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:55:58,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:55:58,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:55:58,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:55:58,468 INFO L87 Difference]: Start difference. First operand 393 states and 602 transitions. Second operand 4 states. [2020-10-15 03:55:58,647 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-15 03:55:59,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:55:59,394 INFO L93 Difference]: Finished difference Result 1037 states and 1624 transitions. [2020-10-15 03:55:59,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:55:59,395 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-10-15 03:55:59,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:55:59,403 INFO L225 Difference]: With dead ends: 1037 [2020-10-15 03:55:59,403 INFO L226 Difference]: Without dead ends: 683 [2020-10-15 03:55:59,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:55:59,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2020-10-15 03:55:59,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 681. [2020-10-15 03:55:59,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 681 states. [2020-10-15 03:55:59,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 1056 transitions. [2020-10-15 03:55:59,447 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 1056 transitions. Word has length 66 [2020-10-15 03:55:59,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:55:59,448 INFO L479 AbstractCegarLoop]: Abstraction has 681 states and 1056 transitions. [2020-10-15 03:55:59,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:55:59,449 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 1056 transitions. [2020-10-15 03:55:59,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-15 03:55:59,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:55:59,455 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] [2020-10-15 03:55:59,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:55:59,455 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:55:59,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:55:59,456 INFO L82 PathProgramCache]: Analyzing trace with hash -507686236, now seen corresponding path program 1 times [2020-10-15 03:55:59,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:55:59,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775403508] [2020-10-15 03:55:59,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:55:59,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:55:59,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:59,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:59,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:55:59,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:00,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:56:00,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 03:56:00,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:56:00,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 815 [2020-10-15 03:56:00,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:56:00,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:56:00,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:56:00,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-15 03:56:00,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 03:56:00,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 03:56:00,499 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:56:00,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:56:00,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:56:00,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:00,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:56:00,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:56:00,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:56:00,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:56:00,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:56:00,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:56:00,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:56:00,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:56:00,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:56:00,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:56:00,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:56:00,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775403508] [2020-10-15 03:56:00,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:56:00,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:56:00,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951484892] [2020-10-15 03:56:00,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:56:00,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:56:00,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:56:00,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:56:00,538 INFO L87 Difference]: Start difference. First operand 681 states and 1056 transitions. Second operand 4 states. [2020-10-15 03:56:00,789 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-15 03:56:01,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:56:01,577 INFO L93 Difference]: Finished difference Result 1837 states and 2882 transitions. [2020-10-15 03:56:01,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:56:01,578 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-15 03:56:01,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:56:01,586 INFO L225 Difference]: With dead ends: 1837 [2020-10-15 03:56:01,586 INFO L226 Difference]: Without dead ends: 1195 [2020-10-15 03:56:01,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:56:01,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2020-10-15 03:56:01,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1193. [2020-10-15 03:56:01,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1193 states. [2020-10-15 03:56:01,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1856 transitions. [2020-10-15 03:56:01,659 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1856 transitions. Word has length 67 [2020-10-15 03:56:01,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:56:01,661 INFO L479 AbstractCegarLoop]: Abstraction has 1193 states and 1856 transitions. [2020-10-15 03:56:01,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:56:01,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1856 transitions. [2020-10-15 03:56:01,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 03:56:01,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:56:01,662 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:56:01,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:56:01,662 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:56:01,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:56:01,663 INFO L82 PathProgramCache]: Analyzing trace with hash 866082344, now seen corresponding path program 1 times [2020-10-15 03:56:01,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:56:01,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450890857] [2020-10-15 03:56:01,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:56:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:56:01,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:01,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:01,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:02,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:56:02,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 03:56:02,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:56:02,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 426 [2020-10-15 03:56:02,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:56:02,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:56:02,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:56:02,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-15 03:56:02,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 03:56:02,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:56:02,374 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:56:02,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:56:02,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:56:02,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:02,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:56:02,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:56:02,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:56:02,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:56:02,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:56:02,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:56:02,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:56:02,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:56:02,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:56:02,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:56:02,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:56:02,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450890857] [2020-10-15 03:56:02,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:56:02,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:56:02,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095469619] [2020-10-15 03:56:02,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:56:02,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:56:02,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:56:02,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:56:02,420 INFO L87 Difference]: Start difference. First operand 1193 states and 1856 transitions. Second operand 4 states. [2020-10-15 03:56:02,633 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-15 03:56:03,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:56:03,408 INFO L93 Difference]: Finished difference Result 3245 states and 5074 transitions. [2020-10-15 03:56:03,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:56:03,409 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-15 03:56:03,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:56:03,420 INFO L225 Difference]: With dead ends: 3245 [2020-10-15 03:56:03,421 INFO L226 Difference]: Without dead ends: 2091 [2020-10-15 03:56:03,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:56:03,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2091 states. [2020-10-15 03:56:03,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2091 to 2089. [2020-10-15 03:56:03,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2089 states. [2020-10-15 03:56:03,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2089 states to 2089 states and 3240 transitions. [2020-10-15 03:56:03,552 INFO L78 Accepts]: Start accepts. Automaton has 2089 states and 3240 transitions. Word has length 68 [2020-10-15 03:56:03,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:56:03,553 INFO L479 AbstractCegarLoop]: Abstraction has 2089 states and 3240 transitions. [2020-10-15 03:56:03,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:56:03,553 INFO L276 IsEmpty]: Start isEmpty. Operand 2089 states and 3240 transitions. [2020-10-15 03:56:03,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 03:56:03,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:56:03,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:56:03,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:56:03,554 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:56:03,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:56:03,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1408508889, now seen corresponding path program 1 times [2020-10-15 03:56:03,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:56:03,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312158418] [2020-10-15 03:56:03,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:56:03,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:56:03,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:03,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:03,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:56:03,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 03:56:03,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:56:03,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-15 03:56:03,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:56:03,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:56:03,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:56:03,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-15 03:56:03,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 03:56:03,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:56:03,969 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:56:03,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:56:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:56:03,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:03,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:56:03,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:56:03,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:56:03,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:56:03,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:56:03,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:56:03,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:56:03,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:56:03,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:56:03,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:56:03,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:56:03,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312158418] [2020-10-15 03:56:03,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:56:03,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:56:03,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439381547] [2020-10-15 03:56:04,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:56:04,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:56:04,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:56:04,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:56:04,001 INFO L87 Difference]: Start difference. First operand 2089 states and 3240 transitions. Second operand 4 states. [2020-10-15 03:56:04,169 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-15 03:56:05,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:56:05,020 INFO L93 Difference]: Finished difference Result 5677 states and 8810 transitions. [2020-10-15 03:56:05,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:56:05,021 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-10-15 03:56:05,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:56:05,039 INFO L225 Difference]: With dead ends: 5677 [2020-10-15 03:56:05,039 INFO L226 Difference]: Without dead ends: 3627 [2020-10-15 03:56:05,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:56:05,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3627 states. [2020-10-15 03:56:05,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3627 to 3625. [2020-10-15 03:56:05,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3625 states. [2020-10-15 03:56:05,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3625 states to 3625 states and 5576 transitions. [2020-10-15 03:56:05,245 INFO L78 Accepts]: Start accepts. Automaton has 3625 states and 5576 transitions. Word has length 69 [2020-10-15 03:56:05,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:56:05,245 INFO L479 AbstractCegarLoop]: Abstraction has 3625 states and 5576 transitions. [2020-10-15 03:56:05,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:56:05,245 INFO L276 IsEmpty]: Start isEmpty. Operand 3625 states and 5576 transitions. [2020-10-15 03:56:05,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 03:56:05,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:56:05,246 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:56:05,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:56:05,247 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:56:05,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:56:05,247 INFO L82 PathProgramCache]: Analyzing trace with hash 666361810, now seen corresponding path program 1 times [2020-10-15 03:56:05,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:56:05,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851216553] [2020-10-15 03:56:05,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:56:05,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:56:05,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:05,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:05,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:56:05,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 03:56:05,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:56:05,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 448 [2020-10-15 03:56:05,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:56:05,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:56:05,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:56:05,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 03:56:05,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-15 03:56:05,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:56:06,025 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:56:06,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:56:06,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:56:06,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:06,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:56:06,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:56:06,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:56:06,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:56:06,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:56:06,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:56:06,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:56:06,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:56:06,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:56:06,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:56:06,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:56:06,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851216553] [2020-10-15 03:56:06,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:56:06,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:56:06,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502321590] [2020-10-15 03:56:06,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:56:06,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:56:06,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:56:06,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:56:06,149 INFO L87 Difference]: Start difference. First operand 3625 states and 5576 transitions. Second operand 8 states. [2020-10-15 03:56:08,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:56:08,688 INFO L93 Difference]: Finished difference Result 18835 states and 28781 transitions. [2020-10-15 03:56:08,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 03:56:08,689 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-15 03:56:08,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:56:08,759 INFO L225 Difference]: With dead ends: 18835 [2020-10-15 03:56:08,760 INFO L226 Difference]: Without dead ends: 15249 [2020-10-15 03:56:08,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:56:08,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15249 states. [2020-10-15 03:56:09,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15249 to 15241. [2020-10-15 03:56:09,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15241 states. [2020-10-15 03:56:09,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15241 states to 15241 states and 23176 transitions. [2020-10-15 03:56:09,823 INFO L78 Accepts]: Start accepts. Automaton has 15241 states and 23176 transitions. Word has length 70 [2020-10-15 03:56:09,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:56:09,823 INFO L479 AbstractCegarLoop]: Abstraction has 15241 states and 23176 transitions. [2020-10-15 03:56:09,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:56:09,823 INFO L276 IsEmpty]: Start isEmpty. Operand 15241 states and 23176 transitions. [2020-10-15 03:56:09,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 03:56:09,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:56:09,825 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] [2020-10-15 03:56:09,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:56:09,825 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:56:09,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:56:09,825 INFO L82 PathProgramCache]: Analyzing trace with hash -45107205, now seen corresponding path program 1 times [2020-10-15 03:56:09,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:56:09,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687119445] [2020-10-15 03:56:09,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:56:09,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:56:09,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:09,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:10,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:56:10,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 03:56:10,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:56:10,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 547 [2020-10-15 03:56:10,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:56:10,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:56:10,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:56:10,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:56:10,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 03:56:10,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:56:10,624 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:56:10,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:56:10,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:56:10,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:10,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:56:10,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:56:10,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:56:10,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 03:56:10,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:56:10,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:56:10,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:56:10,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:56:10,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:56:10,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:56:10,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:56:10,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687119445] [2020-10-15 03:56:10,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:56:10,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:56:10,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016015311] [2020-10-15 03:56:10,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:56:10,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:56:10,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:56:10,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:56:10,684 INFO L87 Difference]: Start difference. First operand 15241 states and 23176 transitions. Second operand 6 states. [2020-10-15 03:56:10,894 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:56:13,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:56:13,249 INFO L93 Difference]: Finished difference Result 45357 states and 68874 transitions. [2020-10-15 03:56:13,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:56:13,249 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2020-10-15 03:56:13,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:56:13,330 INFO L225 Difference]: With dead ends: 45357 [2020-10-15 03:56:13,330 INFO L226 Difference]: Without dead ends: 30155 [2020-10-15 03:56:13,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:56:13,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30155 states. [2020-10-15 03:56:15,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30155 to 30153. [2020-10-15 03:56:15,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30153 states. [2020-10-15 03:56:15,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30153 states to 30153 states and 45448 transitions. [2020-10-15 03:56:15,565 INFO L78 Accepts]: Start accepts. Automaton has 30153 states and 45448 transitions. Word has length 72 [2020-10-15 03:56:15,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:56:15,565 INFO L479 AbstractCegarLoop]: Abstraction has 30153 states and 45448 transitions. [2020-10-15 03:56:15,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:56:15,566 INFO L276 IsEmpty]: Start isEmpty. Operand 30153 states and 45448 transitions. [2020-10-15 03:56:15,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 03:56:15,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:56:15,567 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] [2020-10-15 03:56:15,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:56:15,568 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:56:15,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:56:15,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1442063136, now seen corresponding path program 1 times [2020-10-15 03:56:15,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:56:15,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95198250] [2020-10-15 03:56:15,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:56:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:56:15,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:15,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:56:15,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 03:56:15,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:56:15,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-15 03:56:15,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:56:15,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:56:15,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:56:15,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-15 03:56:15,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 03:56:15,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:56:15,994 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:56:15,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:56:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:56:16,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:16,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:56:16,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:56:16,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:56:16,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:56:16,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:56:16,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:56:16,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:56:16,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:56:16,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:56:16,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:56:16,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:56:16,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95198250] [2020-10-15 03:56:16,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:56:16,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:56:16,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931575678] [2020-10-15 03:56:16,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:56:16,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:56:16,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:56:16,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:56:16,027 INFO L87 Difference]: Start difference. First operand 30153 states and 45448 transitions. Second operand 5 states. [2020-10-15 03:56:18,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:56:18,985 INFO L93 Difference]: Finished difference Result 61547 states and 92137 transitions. [2020-10-15 03:56:18,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:56:18,986 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-15 03:56:18,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:56:19,160 INFO L225 Difference]: With dead ends: 61547 [2020-10-15 03:56:19,160 INFO L226 Difference]: Without dead ends: 61545 [2020-10-15 03:56:19,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:56:19,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61545 states. [2020-10-15 03:56:21,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61545 to 31433. [2020-10-15 03:56:21,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31433 states. [2020-10-15 03:56:21,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31433 states to 31433 states and 46728 transitions. [2020-10-15 03:56:21,258 INFO L78 Accepts]: Start accepts. Automaton has 31433 states and 46728 transitions. Word has length 72 [2020-10-15 03:56:21,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:56:21,258 INFO L479 AbstractCegarLoop]: Abstraction has 31433 states and 46728 transitions. [2020-10-15 03:56:21,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:56:21,258 INFO L276 IsEmpty]: Start isEmpty. Operand 31433 states and 46728 transitions. [2020-10-15 03:56:21,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 03:56:21,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:56:21,259 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] [2020-10-15 03:56:21,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:56:21,259 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:56:21,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:56:21,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1744664474, now seen corresponding path program 1 times [2020-10-15 03:56:21,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:56:21,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620383282] [2020-10-15 03:56:21,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:56:21,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:56:21,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:21,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:56:21,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 03:56:21,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:56:21,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-15 03:56:21,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:56:21,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:56:21,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:56:21,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:56:21,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-15 03:56:21,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:56:21,546 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:56:21,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:56:21,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:56:21,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:21,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:56:21,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:56:21,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:56:21,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:56:21,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:56:21,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:56:21,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:56:21,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:56:21,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:56:21,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:56:21,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:56:21,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620383282] [2020-10-15 03:56:21,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:56:21,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:56:21,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432417914] [2020-10-15 03:56:21,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:56:21,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:56:21,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:56:21,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:56:21,581 INFO L87 Difference]: Start difference. First operand 31433 states and 46728 transitions. Second operand 4 states. [2020-10-15 03:56:21,742 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-15 03:56:24,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:56:24,241 INFO L93 Difference]: Finished difference Result 70143 states and 104124 transitions. [2020-10-15 03:56:24,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:56:24,241 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-10-15 03:56:24,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:56:24,313 INFO L225 Difference]: With dead ends: 70143 [2020-10-15 03:56:24,313 INFO L226 Difference]: Without dead ends: 38749 [2020-10-15 03:56:24,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:56:24,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38749 states. [2020-10-15 03:56:27,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38749 to 38747. [2020-10-15 03:56:27,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38747 states. [2020-10-15 03:56:27,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38747 states to 38747 states and 57290 transitions. [2020-10-15 03:56:27,408 INFO L78 Accepts]: Start accepts. Automaton has 38747 states and 57290 transitions. Word has length 73 [2020-10-15 03:56:27,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:56:27,408 INFO L479 AbstractCegarLoop]: Abstraction has 38747 states and 57290 transitions. [2020-10-15 03:56:27,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:56:27,409 INFO L276 IsEmpty]: Start isEmpty. Operand 38747 states and 57290 transitions. [2020-10-15 03:56:27,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-15 03:56:27,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:56:27,427 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:56:27,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:56:27,427 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:56:27,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:56:27,427 INFO L82 PathProgramCache]: Analyzing trace with hash 282545897, now seen corresponding path program 1 times [2020-10-15 03:56:27,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:56:27,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150755707] [2020-10-15 03:56:27,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:56:27,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:56:27,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:27,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:27,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:28,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:56:28,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-15 03:56:28,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:56:28,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1425 [2020-10-15 03:56:28,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:56:28,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:56:28,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:56:28,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:56:28,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-15 03:56:28,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:56:29,137 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:56:29,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:56:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:56:29,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:29,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:56:29,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:56:29,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:56:29,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:56:29,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:56:29,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:56:29,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:56:29,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:56:29,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:56:29,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:56:29,189 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 03:56:29,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150755707] [2020-10-15 03:56:29,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:56:29,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 03:56:29,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667557490] [2020-10-15 03:56:29,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:56:29,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:56:29,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:56:29,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:56:29,192 INFO L87 Difference]: Start difference. First operand 38747 states and 57290 transitions. Second operand 5 states. [2020-10-15 03:56:29,367 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-15 03:56:33,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:56:33,079 INFO L93 Difference]: Finished difference Result 98273 states and 145469 transitions. [2020-10-15 03:56:33,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:56:33,080 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-15 03:56:33,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:56:33,172 INFO L225 Difference]: With dead ends: 98273 [2020-10-15 03:56:33,172 INFO L226 Difference]: Without dead ends: 66879 [2020-10-15 03:56:33,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:56:33,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66879 states. [2020-10-15 03:56:37,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66879 to 66875. [2020-10-15 03:56:37,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66875 states. [2020-10-15 03:56:37,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66875 states to 66875 states and 98170 transitions. [2020-10-15 03:56:37,719 INFO L78 Accepts]: Start accepts. Automaton has 66875 states and 98170 transitions. Word has length 98 [2020-10-15 03:56:37,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:56:37,720 INFO L479 AbstractCegarLoop]: Abstraction has 66875 states and 98170 transitions. [2020-10-15 03:56:37,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:56:37,720 INFO L276 IsEmpty]: Start isEmpty. Operand 66875 states and 98170 transitions. [2020-10-15 03:56:37,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-15 03:56:37,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:56:37,734 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:56:37,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:56:37,734 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:56:37,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:56:37,734 INFO L82 PathProgramCache]: Analyzing trace with hash 642268685, now seen corresponding path program 1 times [2020-10-15 03:56:37,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:56:37,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51342883] [2020-10-15 03:56:37,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:56:37,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:56:37,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:37,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:37,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:38,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:38,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:40,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:40,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:42,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:56:42,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-15 03:56:42,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:56:42,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 03:56:42,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:56:42,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:56:42,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:56:42,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-15 03:56:42,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-15 03:56:42,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:56:43,064 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:56:43,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:56:43,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:56:43,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:56:43,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:56:43,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:56:43,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:56:43,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:56:43,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:56:43,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:56:43,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:56:43,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:56:43,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:56:43,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:56:43,108 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 03:56:43,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51342883] [2020-10-15 03:56:43,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:56:43,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 03:56:43,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493219747] [2020-10-15 03:56:43,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:56:43,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:56:43,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:56:43,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:56:43,115 INFO L87 Difference]: Start difference. First operand 66875 states and 98170 transitions. Second operand 8 states. [2020-10-15 03:56:43,352 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-15 03:56:54,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:56:54,303 INFO L93 Difference]: Finished difference Result 230767 states and 343237 transitions. [2020-10-15 03:56:54,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:56:54,303 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 99 [2020-10-15 03:56:54,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:56:54,548 INFO L225 Difference]: With dead ends: 230767 [2020-10-15 03:56:54,549 INFO L226 Difference]: Without dead ends: 198509 [2020-10-15 03:56:54,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:56:54,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198509 states. [2020-10-15 03:57:03,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198509 to 111739. [2020-10-15 03:57:03,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111739 states. [2020-10-15 03:57:03,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111739 states to 111739 states and 164330 transitions. [2020-10-15 03:57:03,243 INFO L78 Accepts]: Start accepts. Automaton has 111739 states and 164330 transitions. Word has length 99 [2020-10-15 03:57:03,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:57:03,243 INFO L479 AbstractCegarLoop]: Abstraction has 111739 states and 164330 transitions. [2020-10-15 03:57:03,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:57:03,243 INFO L276 IsEmpty]: Start isEmpty. Operand 111739 states and 164330 transitions. [2020-10-15 03:57:03,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-15 03:57:03,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:57:03,259 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:57:03,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:57:03,260 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:57:03,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:57:03,260 INFO L82 PathProgramCache]: Analyzing trace with hash -857628595, now seen corresponding path program 1 times [2020-10-15 03:57:03,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:57:03,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941265571] [2020-10-15 03:57:03,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:57:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:57:03,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:03,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:03,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:03,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:03,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:05,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:07,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:08,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:57:08,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-15 03:57:08,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:57:08,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 03:57:08,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:57:08,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:57:08,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:57:08,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:57:08,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-15 03:57:08,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:57:08,525 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:57:08,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:57:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:57:08,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:08,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:57:08,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:57:08,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:57:08,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:57:08,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:57:08,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:57:08,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:57:08,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:57:08,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:57:08,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:57:08,567 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 03:57:08,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941265571] [2020-10-15 03:57:08,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:57:08,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 03:57:08,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253713726] [2020-10-15 03:57:08,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:57:08,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:57:08,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:57:08,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:57:08,570 INFO L87 Difference]: Start difference. First operand 111739 states and 164330 transitions. Second operand 8 states. [2020-10-15 03:57:08,763 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-15 03:57:21,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:57:21,949 INFO L93 Difference]: Finished difference Result 263967 states and 390205 transitions. [2020-10-15 03:57:21,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:57:21,950 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 99 [2020-10-15 03:57:21,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:57:22,235 INFO L225 Difference]: With dead ends: 263967 [2020-10-15 03:57:22,236 INFO L226 Difference]: Without dead ends: 221533 [2020-10-15 03:57:22,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:57:22,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221533 states. [2020-10-15 03:57:33,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221533 to 133459. [2020-10-15 03:57:33,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133459 states. [2020-10-15 03:57:34,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133459 states to 133459 states and 196250 transitions. [2020-10-15 03:57:34,043 INFO L78 Accepts]: Start accepts. Automaton has 133459 states and 196250 transitions. Word has length 99 [2020-10-15 03:57:34,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:57:34,043 INFO L479 AbstractCegarLoop]: Abstraction has 133459 states and 196250 transitions. [2020-10-15 03:57:34,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:57:34,044 INFO L276 IsEmpty]: Start isEmpty. Operand 133459 states and 196250 transitions. [2020-10-15 03:57:34,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-15 03:57:34,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:57:34,056 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:57:34,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:57:34,056 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:57:34,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:57:34,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1958887852, now seen corresponding path program 1 times [2020-10-15 03:57:34,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:57:34,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559360707] [2020-10-15 03:57:34,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:57:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:57:34,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:34,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:34,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:34,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:34,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:35,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:37,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:39,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:57:39,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-15 03:57:39,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:57:39,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:57:39,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:57:39,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:57:39,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:57:39,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:57:39,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-15 03:57:39,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:57:39,308 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:57:39,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:57:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:57:39,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:39,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:57:39,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:57:39,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:57:39,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:57:39,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:57:39,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:57:39,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:57:39,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:57:39,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:57:39,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:57:39,355 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:57:39,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559360707] [2020-10-15 03:57:39,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:57:39,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 03:57:39,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657880417] [2020-10-15 03:57:39,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:57:39,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:57:39,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:57:39,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:57:39,357 INFO L87 Difference]: Start difference. First operand 133459 states and 196250 transitions. Second operand 8 states. [2020-10-15 03:57:39,778 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-15 03:58:06,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:58:06,290 INFO L93 Difference]: Finished difference Result 401663 states and 590914 transitions. [2020-10-15 03:58:06,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:58:06,291 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 99 [2020-10-15 03:58:06,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:58:06,752 INFO L225 Difference]: With dead ends: 401663 [2020-10-15 03:58:06,752 INFO L226 Difference]: Without dead ends: 332701 [2020-10-15 03:58:06,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-10-15 03:58:07,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332701 states. [2020-10-15 03:58:20,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332701 to 176607. [2020-10-15 03:58:20,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176607 states. [2020-10-15 03:58:24,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176607 states to 176607 states and 260518 transitions. [2020-10-15 03:58:24,803 INFO L78 Accepts]: Start accepts. Automaton has 176607 states and 260518 transitions. Word has length 99 [2020-10-15 03:58:24,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:58:24,804 INFO L479 AbstractCegarLoop]: Abstraction has 176607 states and 260518 transitions. [2020-10-15 03:58:24,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:58:24,804 INFO L276 IsEmpty]: Start isEmpty. Operand 176607 states and 260518 transitions. [2020-10-15 03:58:24,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-15 03:58:24,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:58:24,820 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:58:24,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:58:24,820 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:58:24,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:58:24,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1472052021, now seen corresponding path program 1 times [2020-10-15 03:58:24,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:58:24,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [554407775] [2020-10-15 03:58:24,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:58:24,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:58:24,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:24,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:24,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:25,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:25,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:25,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:25,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:29,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:58:29,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-15 03:58:29,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:58:29,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:58:29,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:58:29,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:58:29,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:58:29,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:58:29,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-15 03:58:29,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:58:30,121 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:58:30,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:58:30,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:58:30,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:30,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:58:30,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:58:30,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:58:30,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:58:30,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:58:30,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:58:30,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:58:30,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:58:30,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:58:30,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:58:30,176 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:58:30,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [554407775] [2020-10-15 03:58:30,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:58:30,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 03:58:30,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568617740] [2020-10-15 03:58:30,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:58:30,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:58:30,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:58:30,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:58:30,177 INFO L87 Difference]: Start difference. First operand 176607 states and 260518 transitions. Second operand 8 states. [2020-10-15 03:58:30,364 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-15 03:59:09,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:59:09,825 INFO L93 Difference]: Finished difference Result 609845 states and 896672 transitions. [2020-10-15 03:59:09,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:59:09,825 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 99 [2020-10-15 03:59:09,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:59:10,488 INFO L225 Difference]: With dead ends: 609845 [2020-10-15 03:59:10,489 INFO L226 Difference]: Without dead ends: 433279 [2020-10-15 03:59:10,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:59:10,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433279 states.