/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_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:09:38,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:09:38,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:09:38,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:09:38,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:09:38,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:09:38,521 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:09:38,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:09:38,527 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:09:38,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:09:38,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:09:38,531 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:09:38,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:09:38,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:09:38,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:09:38,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:09:38,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:09:38,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:09:38,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:09:38,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:09:38,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:09:38,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:09:38,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:09:38,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:09:38,568 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:09:38,569 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:09:38,569 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:09:38,570 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:09:38,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:09:38,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:09:38,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:09:38,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:09:38,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:09:38,579 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:09:38,580 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:09:38,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:09:38,581 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:09:38,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:09:38,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:09:38,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:09:38,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:09:38,585 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 04:09:38,622 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:09:38,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:09:38,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:09:38,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:09:38,625 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:09:38,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:09:38,625 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:09:38,625 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:09:38,625 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:09:38,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:09:38,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:09:38,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:09:38,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:09:38,627 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:09:38,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:09:38,628 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:09:38,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:09:38,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:09:38,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:09:38,628 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:09:38,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:09:38,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:09:38,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:09:38,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:09:38,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:09:38,629 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:09:38,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:09:38,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:09:38,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:09:38,630 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 04:09:38,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:09:38,978 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:09:38,983 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:09:38,986 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:09:38,987 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:09:38,987 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 04:09:39,048 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a15b7730e/daba10ebd8804c3d9136e7ed8da5a170/FLAGece4271a5 [2020-10-15 04:09:39,620 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:09:39,621 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 04:09:39,639 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a15b7730e/daba10ebd8804c3d9136e7ed8da5a170/FLAGece4271a5 [2020-10-15 04:09:39,880 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a15b7730e/daba10ebd8804c3d9136e7ed8da5a170 [2020-10-15 04:09:39,888 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:09:39,889 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:09:39,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:09:39,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:09:39,894 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:09:39,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:09:39" (1/1) ... [2020-10-15 04:09:39,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63c27ff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:09:39, skipping insertion in model container [2020-10-15 04:09:39,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:09:39" (1/1) ... [2020-10-15 04:09:39,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:09:39,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:09:40,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:09:40,513 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:09:40,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:09:40,692 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:09:40,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:09:40 WrapperNode [2020-10-15 04:09:40,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:09:40,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:09:40,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:09:40,694 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:09:40,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:09:40" (1/1) ... [2020-10-15 04:09:40,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:09:40" (1/1) ... [2020-10-15 04:09:40,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:09:40" (1/1) ... [2020-10-15 04:09:40,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:09:40" (1/1) ... [2020-10-15 04:09:40,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:09:40" (1/1) ... [2020-10-15 04:09:40,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:09:40" (1/1) ... [2020-10-15 04:09:40,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:09:40" (1/1) ... [2020-10-15 04:09:40,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:09:40,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:09:40,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:09:40,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:09:40,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:09:40" (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 04:09:40,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:09:40,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:09:40,889 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 04:09:40,889 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:09:40,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:09:40,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:09:40,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 04:09:40,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 04:09:40,892 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 04:09:40,892 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 04:09:40,892 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 04:09:40,893 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 04:09:40,893 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 04:09:40,893 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 04:09:40,893 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 04:09:40,896 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 04:09:40,896 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 04:09:40,897 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 04:09:40,897 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 04:09:40,897 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:09:40,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:09:40,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:09:42,338 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:09:42,338 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 04:09:42,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:09:42 BoogieIcfgContainer [2020-10-15 04:09:42,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:09:42,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:09:42,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:09:42,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:09:42,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:09:39" (1/3) ... [2020-10-15 04:09:42,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@507ce031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:09:42, skipping insertion in model container [2020-10-15 04:09:42,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:09:40" (2/3) ... [2020-10-15 04:09:42,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@507ce031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:09:42, skipping insertion in model container [2020-10-15 04:09:42,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:09:42" (3/3) ... [2020-10-15 04:09:42,352 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-15 04:09:42,360 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:09:42,367 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:09:42,382 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:09:42,408 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:09:42,408 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:09:42,408 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:09:42,408 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:09:42,408 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:09:42,409 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:09:42,409 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:09:42,409 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:09:42,439 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states. [2020-10-15 04:09:42,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-15 04:09:42,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:09:42,458 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:09:42,459 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:09:42,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:09:42,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1373065631, now seen corresponding path program 1 times [2020-10-15 04:09:42,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:09:42,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164836554] [2020-10-15 04:09:42,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:09:42,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:09:43,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:43,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:44,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:44,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:44,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:48,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:09:48,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-15 04:09:48,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:09:48,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-15 04:09:48,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:09:48,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:09:48,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:09:48,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-15 04:09:48,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 04:09:48,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 04:09:48,765 WARN L193 SmtUtils]: Spent 556.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:09:48,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:09:48,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:09:48,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:48,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:09:48,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:09:48,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:09:48,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-15 04:09:48,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:09:48,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:09:48,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:09:48,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:09:48,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:09:48,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:09:48,925 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 04:09:48,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1164836554] [2020-10-15 04:09:48,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:09:48,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:09:48,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586793651] [2020-10-15 04:09:48,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:09:48,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:09:48,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:09:48,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:09:48,955 INFO L87 Difference]: Start difference. First operand 355 states. Second operand 4 states. [2020-10-15 04:09:49,432 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-15 04:09:51,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:09:51,708 INFO L93 Difference]: Finished difference Result 661 states and 1135 transitions. [2020-10-15 04:09:51,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:09:51,717 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-10-15 04:09:51,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:09:51,742 INFO L225 Difference]: With dead ends: 661 [2020-10-15 04:09:51,742 INFO L226 Difference]: Without dead ends: 495 [2020-10-15 04:09:51,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:09:51,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2020-10-15 04:09:51,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 492. [2020-10-15 04:09:51,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 492 states. [2020-10-15 04:09:51,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 813 transitions. [2020-10-15 04:09:51,831 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 813 transitions. Word has length 122 [2020-10-15 04:09:51,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:09:51,832 INFO L479 AbstractCegarLoop]: Abstraction has 492 states and 813 transitions. [2020-10-15 04:09:51,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:09:51,832 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 813 transitions. [2020-10-15 04:09:51,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-15 04:09:51,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:09:51,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:09:51,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:09:51,837 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:09:51,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:09:51,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1752226954, now seen corresponding path program 1 times [2020-10-15 04:09:51,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:09:51,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102268529] [2020-10-15 04:09:51,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:09:51,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:09:51,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:52,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:52,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:52,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:53,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:53,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:53,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:56,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:09:56,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-15 04:09:56,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:09:56,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-15 04:09:56,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:09:56,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:09:56,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:09:56,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:09:56,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-15 04:09:56,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:09:57,572 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:09:57,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:09:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:09:57,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:09:57,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:09:57,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:09:57,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:09:57,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-15 04:09:57,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:09:57,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:09:57,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:09:57,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:09:57,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:09:57,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:09:57,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:09:57,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102268529] [2020-10-15 04:09:57,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:09:57,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:09:57,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353181896] [2020-10-15 04:09:57,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:09:57,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:09:57,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:09:57,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:09:57,679 INFO L87 Difference]: Start difference. First operand 492 states and 813 transitions. Second operand 5 states. [2020-10-15 04:10:00,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:10:00,039 INFO L93 Difference]: Finished difference Result 1368 states and 2251 transitions. [2020-10-15 04:10:00,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:10:00,044 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-15 04:10:00,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:10:00,052 INFO L225 Difference]: With dead ends: 1368 [2020-10-15 04:10:00,052 INFO L226 Difference]: Without dead ends: 941 [2020-10-15 04:10:00,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:10:00,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2020-10-15 04:10:00,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 939. [2020-10-15 04:10:00,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 939 states. [2020-10-15 04:10:00,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1545 transitions. [2020-10-15 04:10:00,142 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1545 transitions. Word has length 125 [2020-10-15 04:10:00,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:10:00,142 INFO L479 AbstractCegarLoop]: Abstraction has 939 states and 1545 transitions. [2020-10-15 04:10:00,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:10:00,143 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1545 transitions. [2020-10-15 04:10:00,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-15 04:10:00,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:10:00,146 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:10:00,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:10:00,147 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:10:00,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:10:00,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1536933486, now seen corresponding path program 1 times [2020-10-15 04:10:00,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:10:00,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1808176891] [2020-10-15 04:10:00,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:10:00,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:00,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:00,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:00,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:01,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:01,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:01,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:01,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:05,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:10:05,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-15 04:10:05,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:10:05,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-15 04:10:05,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:10:05,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:10:05,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:10:05,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:10:05,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-15 04:10:05,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:10:05,965 WARN L193 SmtUtils]: Spent 593.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:10:05,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:10:05,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:05,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:05,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:10:05,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:10:05,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:10:05,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 04:10:05,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:10:05,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:10:05,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:10:05,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:10:05,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:10:05,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:10:06,101 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 04:10:06,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1808176891] [2020-10-15 04:10:06,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:10:06,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:10:06,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818637671] [2020-10-15 04:10:06,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:10:06,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:10:06,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:10:06,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:10:06,105 INFO L87 Difference]: Start difference. First operand 939 states and 1545 transitions. Second operand 5 states. [2020-10-15 04:10:08,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:10:08,692 INFO L93 Difference]: Finished difference Result 2710 states and 4450 transitions. [2020-10-15 04:10:08,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:10:08,693 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-15 04:10:08,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:10:08,713 INFO L225 Difference]: With dead ends: 2710 [2020-10-15 04:10:08,713 INFO L226 Difference]: Without dead ends: 1832 [2020-10-15 04:10:08,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:10:08,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1832 states. [2020-10-15 04:10:08,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1832 to 1830. [2020-10-15 04:10:08,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1830 states. [2020-10-15 04:10:08,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1830 states to 1830 states and 2991 transitions. [2020-10-15 04:10:08,841 INFO L78 Accepts]: Start accepts. Automaton has 1830 states and 2991 transitions. Word has length 126 [2020-10-15 04:10:08,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:10:08,843 INFO L479 AbstractCegarLoop]: Abstraction has 1830 states and 2991 transitions. [2020-10-15 04:10:08,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:10:08,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1830 states and 2991 transitions. [2020-10-15 04:10:08,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-15 04:10:08,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:10:08,852 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:10:08,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:10:08,853 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:10:08,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:10:08,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1163151831, now seen corresponding path program 1 times [2020-10-15 04:10:08,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:10:08,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180612951] [2020-10-15 04:10:08,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:10:08,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:08,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:08,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:09,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:09,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:09,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:09,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:10,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:13,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:10:13,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-15 04:10:13,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:10:13,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 04:10:13,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:10:13,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:10:13,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:10:13,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:10:13,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-15 04:10:13,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:10:14,555 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:10:14,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:10:14,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:14,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:14,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:10:14,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:10:14,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:10:14,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 04:10:14,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:10:14,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:10:14,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:10:14,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:10:14,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:10:14,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:10:14,688 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 04:10:14,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180612951] [2020-10-15 04:10:14,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:10:14,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:10:14,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734689004] [2020-10-15 04:10:14,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:10:14,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:10:14,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:10:14,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:10:14,693 INFO L87 Difference]: Start difference. First operand 1830 states and 2991 transitions. Second operand 5 states. [2020-10-15 04:10:17,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:10:17,155 INFO L93 Difference]: Finished difference Result 5294 states and 8629 transitions. [2020-10-15 04:10:17,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:10:17,156 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-15 04:10:17,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:10:17,174 INFO L225 Difference]: With dead ends: 5294 [2020-10-15 04:10:17,175 INFO L226 Difference]: Without dead ends: 3559 [2020-10-15 04:10:17,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:10:17,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3559 states. [2020-10-15 04:10:17,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3559 to 3557. [2020-10-15 04:10:17,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3557 states. [2020-10-15 04:10:17,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 5769 transitions. [2020-10-15 04:10:17,383 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 5769 transitions. Word has length 127 [2020-10-15 04:10:17,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:10:17,384 INFO L479 AbstractCegarLoop]: Abstraction has 3557 states and 5769 transitions. [2020-10-15 04:10:17,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:10:17,384 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 5769 transitions. [2020-10-15 04:10:17,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-15 04:10:17,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:10:17,392 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:10:17,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:10:17,392 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:10:17,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:10:17,393 INFO L82 PathProgramCache]: Analyzing trace with hash -2087206230, now seen corresponding path program 1 times [2020-10-15 04:10:17,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:10:17,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399911959] [2020-10-15 04:10:17,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:10:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:17,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:17,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:17,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:17,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:18,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:19,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:19,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:19,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:22,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:10:22,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-15 04:10:22,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 04:10:22,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-15 04:10:22,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:10:22,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:10:22,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:10:22,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:10:22,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-15 04:10:22,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:10:23,058 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:10:23,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:10:23,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:23,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:23,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:10:23,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:10:23,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:10:23,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 04:10:23,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:10:23,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:10:23,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:10:23,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:10:23,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:10:23,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:10:23,134 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 04:10:23,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399911959] [2020-10-15 04:10:23,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:10:23,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:10:23,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767300980] [2020-10-15 04:10:23,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:10:23,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:10:23,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:10:23,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:10:23,137 INFO L87 Difference]: Start difference. First operand 3557 states and 5769 transitions. Second operand 5 states. [2020-10-15 04:10:25,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:10:25,581 INFO L93 Difference]: Finished difference Result 10393 states and 16829 transitions. [2020-10-15 04:10:25,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:10:25,582 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-15 04:10:25,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:10:25,618 INFO L225 Difference]: With dead ends: 10393 [2020-10-15 04:10:25,618 INFO L226 Difference]: Without dead ends: 6895 [2020-10-15 04:10:25,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:10:25,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6895 states. [2020-10-15 04:10:26,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6895 to 6893. [2020-10-15 04:10:26,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6893 states. [2020-10-15 04:10:26,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6893 states to 6893 states and 11091 transitions. [2020-10-15 04:10:26,053 INFO L78 Accepts]: Start accepts. Automaton has 6893 states and 11091 transitions. Word has length 128 [2020-10-15 04:10:26,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:10:26,054 INFO L479 AbstractCegarLoop]: Abstraction has 6893 states and 11091 transitions. [2020-10-15 04:10:26,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:10:26,054 INFO L276 IsEmpty]: Start isEmpty. Operand 6893 states and 11091 transitions. [2020-10-15 04:10:26,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-15 04:10:26,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:10:26,069 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:10:26,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:10:26,069 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:10:26,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:10:26,070 INFO L82 PathProgramCache]: Analyzing trace with hash 854718395, now seen corresponding path program 1 times [2020-10-15 04:10:26,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:10:26,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794376720] [2020-10-15 04:10:26,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:10:26,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:26,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:26,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:26,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:26,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:26,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:26,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:27,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:30,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:10:30,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-15 04:10:30,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 04:10:30,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3885 [2020-10-15 04:10:30,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:10:30,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:10:30,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:10:30,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-15 04:10:30,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-15 04:10:30,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:10:30,466 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:10:30,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:10:30,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:30,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:30,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:10:30,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:10:30,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:10:30,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 04:10:30,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:10:30,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:10:30,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:10:30,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:10:30,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:10:30,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:10:30,528 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 04:10:30,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794376720] [2020-10-15 04:10:30,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:10:30,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:10:30,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628919609] [2020-10-15 04:10:30,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:10:30,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:10:30,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:10:30,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:10:30,530 INFO L87 Difference]: Start difference. First operand 6893 states and 11091 transitions. Second operand 4 states. [2020-10-15 04:10:30,988 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-15 04:10:33,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:10:33,208 INFO L93 Difference]: Finished difference Result 15217 states and 24917 transitions. [2020-10-15 04:10:33,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:10:33,211 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2020-10-15 04:10:33,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:10:33,265 INFO L225 Difference]: With dead ends: 15217 [2020-10-15 04:10:33,265 INFO L226 Difference]: Without dead ends: 10903 [2020-10-15 04:10:33,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:10:33,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10903 states. [2020-10-15 04:10:34,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10903 to 10869. [2020-10-15 04:10:34,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10869 states. [2020-10-15 04:10:34,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10869 states to 10869 states and 17643 transitions. [2020-10-15 04:10:34,030 INFO L78 Accepts]: Start accepts. Automaton has 10869 states and 17643 transitions. Word has length 128 [2020-10-15 04:10:34,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:10:34,031 INFO L479 AbstractCegarLoop]: Abstraction has 10869 states and 17643 transitions. [2020-10-15 04:10:34,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:10:34,031 INFO L276 IsEmpty]: Start isEmpty. Operand 10869 states and 17643 transitions. [2020-10-15 04:10:34,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-15 04:10:34,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:10:34,045 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:10:34,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:10:34,045 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:10:34,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:10:34,046 INFO L82 PathProgramCache]: Analyzing trace with hash -2082601841, now seen corresponding path program 1 times [2020-10-15 04:10:34,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:10:34,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963259721] [2020-10-15 04:10:34,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:10:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:34,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:34,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:34,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:34,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:34,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:34,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:34,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:34,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:35,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:39,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:10:39,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-15 04:10:39,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:10:39,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-15 04:10:39,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:10:39,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:10:39,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:10:39,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:10:39,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-15 04:10:39,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:10:39,660 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:10:39,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:10:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:39,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:39,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:10:39,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:10:39,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:10:39,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 04:10:39,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:10:39,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:10:39,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:10:39,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:10:39,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:10:39,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:10:39,759 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 04:10:39,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963259721] [2020-10-15 04:10:39,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:10:39,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:10:39,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16766575] [2020-10-15 04:10:39,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:10:39,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:10:39,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:10:39,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:10:39,761 INFO L87 Difference]: Start difference. First operand 10869 states and 17643 transitions. Second operand 5 states. [2020-10-15 04:10:43,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:10:43,219 INFO L93 Difference]: Finished difference Result 31461 states and 51028 transitions. [2020-10-15 04:10:43,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:10:43,220 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-10-15 04:10:43,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:10:43,279 INFO L225 Difference]: With dead ends: 31461 [2020-10-15 04:10:43,279 INFO L226 Difference]: Without dead ends: 21195 [2020-10-15 04:10:43,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:10:43,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21195 states. [2020-10-15 04:10:45,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21195 to 21193. [2020-10-15 04:10:45,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21193 states. [2020-10-15 04:10:45,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21193 states to 21193 states and 34224 transitions. [2020-10-15 04:10:45,431 INFO L78 Accepts]: Start accepts. Automaton has 21193 states and 34224 transitions. Word has length 131 [2020-10-15 04:10:45,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:10:45,431 INFO L479 AbstractCegarLoop]: Abstraction has 21193 states and 34224 transitions. [2020-10-15 04:10:45,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:10:45,432 INFO L276 IsEmpty]: Start isEmpty. Operand 21193 states and 34224 transitions. [2020-10-15 04:10:45,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-15 04:10:45,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:10:45,451 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:10:45,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:10:45,452 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:10:45,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:10:45,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1852384043, now seen corresponding path program 1 times [2020-10-15 04:10:45,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:10:45,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369621881] [2020-10-15 04:10:45,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:10:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:45,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:45,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:45,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:45,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:45,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:46,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:46,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:46,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:46,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:50,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:10:50,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-15 04:10:50,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:10:50,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-15 04:10:50,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:10:50,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:10:50,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:10:50,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:10:50,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-15 04:10:50,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:10:50,983 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:10:50,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:10:50,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:50,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:50,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:10:50,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:10:50,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:10:50,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 04:10:50,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:10:50,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:10:50,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:10:51,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:10:51,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:10:51,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:10:51,041 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 04:10:51,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369621881] [2020-10-15 04:10:51,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:10:51,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:10:51,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513327206] [2020-10-15 04:10:51,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:10:51,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:10:51,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:10:51,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:10:51,043 INFO L87 Difference]: Start difference. First operand 21193 states and 34224 transitions. Second operand 5 states. [2020-10-15 04:10:55,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:10:55,109 INFO L93 Difference]: Finished difference Result 62339 states and 100618 transitions. [2020-10-15 04:10:55,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:10:55,110 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-10-15 04:10:55,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:10:55,229 INFO L225 Difference]: With dead ends: 62339 [2020-10-15 04:10:55,229 INFO L226 Difference]: Without dead ends: 41441 [2020-10-15 04:10:55,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:10:55,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41441 states. [2020-10-15 04:10:57,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41441 to 41439. [2020-10-15 04:10:57,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41439 states. [2020-10-15 04:10:57,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41439 states to 41439 states and 66519 transitions. [2020-10-15 04:10:57,648 INFO L78 Accepts]: Start accepts. Automaton has 41439 states and 66519 transitions. Word has length 132 [2020-10-15 04:10:57,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:10:57,648 INFO L479 AbstractCegarLoop]: Abstraction has 41439 states and 66519 transitions. [2020-10-15 04:10:57,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:10:57,648 INFO L276 IsEmpty]: Start isEmpty. Operand 41439 states and 66519 transitions. [2020-10-15 04:10:57,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-15 04:10:57,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:10:57,673 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:10:57,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:10:57,673 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:10:57,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:10:57,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1543126340, now seen corresponding path program 1 times [2020-10-15 04:10:57,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:10:57,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382880981] [2020-10-15 04:10:57,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:10:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:57,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:57,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:57,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:58,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:58,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:58,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:58,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:59,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:59,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:02,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:11:02,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-15 04:11:02,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:11:02,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5131 [2020-10-15 04:11:02,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:11:02,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:11:02,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:11:02,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:11:02,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-15 04:11:02,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:11:03,342 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:11:03,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:11:03,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:11:03,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:03,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:11:03,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:11:03,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:11:03,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 04:11:03,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:11:03,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:11:03,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:11:03,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:11:03,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:11:03,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:11:03,414 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 04:11:03,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382880981] [2020-10-15 04:11:03,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:11:03,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:11:03,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282852920] [2020-10-15 04:11:03,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:11:03,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:11:03,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:11:03,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:11:03,416 INFO L87 Difference]: Start difference. First operand 41439 states and 66519 transitions. Second operand 5 states. [2020-10-15 04:11:09,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:11:09,543 INFO L93 Difference]: Finished difference Result 121011 states and 194049 transitions. [2020-10-15 04:11:09,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:11:09,544 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-10-15 04:11:09,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:11:09,744 INFO L225 Difference]: With dead ends: 121011 [2020-10-15 04:11:09,744 INFO L226 Difference]: Without dead ends: 80689 [2020-10-15 04:11:09,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:11:09,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80689 states. [2020-10-15 04:11:15,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80689 to 80687. [2020-10-15 04:11:15,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80687 states. [2020-10-15 04:11:15,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80687 states to 80687 states and 128527 transitions. [2020-10-15 04:11:15,652 INFO L78 Accepts]: Start accepts. Automaton has 80687 states and 128527 transitions. Word has length 133 [2020-10-15 04:11:15,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:11:15,652 INFO L479 AbstractCegarLoop]: Abstraction has 80687 states and 128527 transitions. [2020-10-15 04:11:15,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:11:15,652 INFO L276 IsEmpty]: Start isEmpty. Operand 80687 states and 128527 transitions. [2020-10-15 04:11:15,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-15 04:11:15,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:11:15,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:11:15,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:11:15,696 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:11:15,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:11:15,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1630895799, now seen corresponding path program 1 times [2020-10-15 04:11:15,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:11:15,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985137752] [2020-10-15 04:11:15,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:11:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:11:15,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:15,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:15,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:16,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:16,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:16,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:16,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:17,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:18,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:20,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:11:20,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-15 04:11:20,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:11:20,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-15 04:11:20,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:11:20,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:11:20,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:11:20,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-15 04:11:20,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 04:11:20,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 04:11:21,287 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:11:21,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:11:21,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:11:21,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:21,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:11:21,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:11:21,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:11:21,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 04:11:21,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:11:21,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:11:21,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:11:21,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:11:21,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:11:21,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:11:21,341 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 04:11:21,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985137752] [2020-10-15 04:11:21,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:11:21,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:11:21,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232432180] [2020-10-15 04:11:21,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:11:21,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:11:21,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:11:21,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:11:21,343 INFO L87 Difference]: Start difference. First operand 80687 states and 128527 transitions. Second operand 4 states. [2020-10-15 04:11:21,792 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-15 04:11:31,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:11:31,008 INFO L93 Difference]: Finished difference Result 198707 states and 320785 transitions. [2020-10-15 04:11:31,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:11:31,008 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2020-10-15 04:11:31,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:11:31,281 INFO L225 Difference]: With dead ends: 198707 [2020-10-15 04:11:31,281 INFO L226 Difference]: Without dead ends: 136881 [2020-10-15 04:11:31,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:11:31,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136881 states. [2020-10-15 04:11:41,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136881 to 136367. [2020-10-15 04:11:41,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136367 states. [2020-10-15 04:11:41,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136367 states to 136367 states and 216207 transitions. [2020-10-15 04:11:41,432 INFO L78 Accepts]: Start accepts. Automaton has 136367 states and 216207 transitions. Word has length 134 [2020-10-15 04:11:41,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:11:41,433 INFO L479 AbstractCegarLoop]: Abstraction has 136367 states and 216207 transitions. [2020-10-15 04:11:41,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:11:41,433 INFO L276 IsEmpty]: Start isEmpty. Operand 136367 states and 216207 transitions. [2020-10-15 04:11:41,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-15 04:11:41,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:11:41,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:11:41,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 04:11:41,487 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:11:41,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:11:41,487 INFO L82 PathProgramCache]: Analyzing trace with hash -348459402, now seen corresponding path program 1 times [2020-10-15 04:11:41,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:11:41,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542929561] [2020-10-15 04:11:41,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:11:41,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:11:41,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:41,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:41,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:41,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:41,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:42,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:42,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:46,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:46,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:46,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:11:46,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-15 04:11:46,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:11:46,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 04:11:46,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:11:46,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:11:46,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:11:46,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:11:46,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-15 04:11:46,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:11:46,992 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:11:46,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:11:47,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:11:47,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:47,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:11:47,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:11:47,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:11:47,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 04:11:47,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:11:47,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:11:47,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:11:47,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:11:47,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:11:47,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:11:47,042 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 04:11:47,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542929561] [2020-10-15 04:11:47,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:11:47,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:11:47,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450482561] [2020-10-15 04:11:47,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:11:47,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:11:47,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:11:47,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:11:47,044 INFO L87 Difference]: Start difference. First operand 136367 states and 216207 transitions. Second operand 5 states. [2020-10-15 04:12:05,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:12:05,392 INFO L93 Difference]: Finished difference Result 402744 states and 638042 transitions. [2020-10-15 04:12:05,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:12:05,393 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-10-15 04:12:05,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:12:05,773 INFO L225 Difference]: With dead ends: 402744 [2020-10-15 04:12:05,774 INFO L226 Difference]: Without dead ends: 266432 [2020-10-15 04:12:05,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:12:06,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266432 states. [2020-10-15 04:12:27,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266432 to 266430. [2020-10-15 04:12:27,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266430 states. [2020-10-15 04:12:28,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266430 states to 266430 states and 419518 transitions. [2020-10-15 04:12:28,219 INFO L78 Accepts]: Start accepts. Automaton has 266430 states and 419518 transitions. Word has length 137 [2020-10-15 04:12:28,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:12:28,219 INFO L479 AbstractCegarLoop]: Abstraction has 266430 states and 419518 transitions. [2020-10-15 04:12:28,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:12:28,219 INFO L276 IsEmpty]: Start isEmpty. Operand 266430 states and 419518 transitions. [2020-10-15 04:12:28,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-15 04:12:28,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:12:28,347 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:12:28,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 04:12:28,348 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:12:28,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:12:28,348 INFO L82 PathProgramCache]: Analyzing trace with hash -461223930, now seen corresponding path program 1 times [2020-10-15 04:12:28,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:12:28,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937822322] [2020-10-15 04:12:28,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:12:28,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:12:28,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:28,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:28,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:28,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:28,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:29,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:29,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:30,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:31,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:31,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:31,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:33,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:12:33,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-15 04:12:33,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 04:12:33,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5180 [2020-10-15 04:12:33,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:12:33,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:12:33,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:12:33,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:12:33,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-15 04:12:33,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:12:34,047 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-15 04:12:34,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:12:34,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:12:34,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:34,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:12:34,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:12:34,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:12:34,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 04:12:34,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:12:34,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:12:34,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:12:34,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:12:34,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:12:34,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:12:34,095 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 04:12:34,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937822322] [2020-10-15 04:12:34,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:12:34,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:12:34,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264256914] [2020-10-15 04:12:34,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:12:34,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:12:34,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:12:34,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:12:34,098 INFO L87 Difference]: Start difference. First operand 266430 states and 419518 transitions. Second operand 5 states.