/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:35:11,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:35:11,623 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:35:11,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:35:11,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:35:11,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:35:11,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:35:11,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:35:11,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:35:11,653 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:35:11,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:35:11,655 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:35:11,655 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:35:11,656 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:35:11,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:35:11,658 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:35:11,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:35:11,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:35:11,664 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:35:11,666 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:35:11,667 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:35:11,668 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:35:11,669 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:35:11,670 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:35:11,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:35:11,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:35:11,673 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:35:11,673 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:35:11,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:35:11,675 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:35:11,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:35:11,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:35:11,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:35:11,677 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:35:11,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:35:11,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:35:11,679 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:35:11,679 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:35:11,679 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:35:11,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:35:11,680 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:35:11,681 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 03:35:11,703 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:35:11,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:35:11,705 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:35:11,705 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:35:11,705 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:35:11,705 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:35:11,705 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:35:11,706 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:35:11,706 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:35:11,706 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:35:11,706 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:35:11,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:35:11,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:35:11,707 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:35:11,707 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:35:11,707 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:35:11,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:35:11,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:35:11,708 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:35:11,708 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:35:11,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:35:11,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:35:11,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:35:11,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:35:11,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:35:11,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:35:11,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:35:11,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:35:11,709 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:35:11,710 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:35:12,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:35:12,038 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:35:12,041 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:35:12,043 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:35:12,043 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:35:12,044 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+cfa-reducer.c [2020-10-15 03:35:12,105 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdaf4a16c/a1900cfa9de44b059ae667034c5d3eca/FLAG33ec4a1d1 [2020-10-15 03:35:12,617 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:35:12,618 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+cfa-reducer.c [2020-10-15 03:35:12,633 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdaf4a16c/a1900cfa9de44b059ae667034c5d3eca/FLAG33ec4a1d1 [2020-10-15 03:35:12,883 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdaf4a16c/a1900cfa9de44b059ae667034c5d3eca [2020-10-15 03:35:12,893 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:35:12,895 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:35:12,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:35:12,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:35:12,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:35:12,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:35:12" (1/1) ... [2020-10-15 03:35:12,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27005f00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:35:12, skipping insertion in model container [2020-10-15 03:35:12,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:35:12" (1/1) ... [2020-10-15 03:35:12,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:35:12,954 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:35:13,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:35:13,304 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:35:13,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:35:13,538 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:35:13,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:35:13 WrapperNode [2020-10-15 03:35:13,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:35:13,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:35:13,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:35:13,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:35:13,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:35:13" (1/1) ... [2020-10-15 03:35:13,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:35:13" (1/1) ... [2020-10-15 03:35:13,566 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:35:13" (1/1) ... [2020-10-15 03:35:13,566 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:35:13" (1/1) ... [2020-10-15 03:35:13,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:35:13" (1/1) ... [2020-10-15 03:35:13,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:35:13" (1/1) ... [2020-10-15 03:35:13,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:35:13" (1/1) ... [2020-10-15 03:35:13,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:35:13,625 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:35:13,625 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:35:13,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:35:13,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:35:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:35:13,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:35:13,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:35:13,698 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:35:13,698 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:35:13,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:35:13,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:35:13,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:35:13,699 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:35:13,699 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:35:13,699 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:35:13,699 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:35:13,700 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:35:13,700 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:35:13,700 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:35:13,700 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:35:13,700 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:35:13,700 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 03:35:13,701 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-15 03:35:13,701 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-15 03:35:13,701 INFO L130 BoogieDeclarations]: Found specification of procedure node8 [2020-10-15 03:35:13,701 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:35:13,701 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:35:13,701 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:35:13,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:35:13,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:35:14,479 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:35:14,479 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:35:14,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:35:14 BoogieIcfgContainer [2020-10-15 03:35:14,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:35:14,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:35:14,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:35:14,490 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:35:14,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:35:12" (1/3) ... [2020-10-15 03:35:14,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10273ec0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:35:14, skipping insertion in model container [2020-10-15 03:35:14,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:35:13" (2/3) ... [2020-10-15 03:35:14,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10273ec0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:35:14, skipping insertion in model container [2020-10-15 03:35:14,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:35:14" (3/3) ... [2020-10-15 03:35:14,494 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+cfa-reducer.c [2020-10-15 03:35:14,505 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:35:14,513 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:35:14,527 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:35:14,553 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:35:14,553 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:35:14,553 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:35:14,554 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:35:14,554 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:35:14,554 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:35:14,554 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:35:14,555 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:35:14,578 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states. [2020-10-15 03:35:14,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-15 03:35:14,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:35:14,592 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] [2020-10-15 03:35:14,593 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:35:14,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:35:14,600 INFO L82 PathProgramCache]: Analyzing trace with hash 351638092, now seen corresponding path program 1 times [2020-10-15 03:35:14,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:35:14,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072819904] [2020-10-15 03:35:14,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:35:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:15,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:15,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:15,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:15,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:16,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:16,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:16,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:19,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:19,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-15 03:35:19,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:35:19,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:35:20,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:20,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:20,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:35:20,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-15 03:35:20,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 03:35:20,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-15 03:35:20,538 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 03:35:20,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:35:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:20,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:20,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:20,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:35:20,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:35:20,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:35:20,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:20,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:20,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:35:20,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:35:20,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:35:20,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:35:20,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:35:20,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072819904] [2020-10-15 03:35:20,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:35:20,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:35:20,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258515488] [2020-10-15 03:35:20,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:35:20,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:35:20,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:35:20,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:35:20,629 INFO L87 Difference]: Start difference. First operand 162 states. Second operand 4 states. [2020-10-15 03:35:21,097 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-15 03:35:22,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:35:22,317 INFO L93 Difference]: Finished difference Result 342 states and 561 transitions. [2020-10-15 03:35:22,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:35:22,319 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-10-15 03:35:22,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:35:22,337 INFO L225 Difference]: With dead ends: 342 [2020-10-15 03:35:22,337 INFO L226 Difference]: Without dead ends: 240 [2020-10-15 03:35:22,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:35:22,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-10-15 03:35:22,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 238. [2020-10-15 03:35:22,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-10-15 03:35:22,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 339 transitions. [2020-10-15 03:35:22,406 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 339 transitions. Word has length 105 [2020-10-15 03:35:22,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:35:22,407 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 339 transitions. [2020-10-15 03:35:22,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:35:22,407 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 339 transitions. [2020-10-15 03:35:22,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-15 03:35:22,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:35:22,410 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] [2020-10-15 03:35:22,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:35:22,411 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:35:22,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:35:22,411 INFO L82 PathProgramCache]: Analyzing trace with hash 610458664, now seen corresponding path program 1 times [2020-10-15 03:35:22,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:35:22,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56954744] [2020-10-15 03:35:22,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:35:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:22,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:22,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:22,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:22,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:23,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:23,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:25,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:26,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:27,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:27,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-15 03:35:27,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:35:27,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-15 03:35:27,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:27,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:27,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 03:35:27,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:35:27,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-15 03:35:27,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-15 03:35:27,968 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 03:35:27,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:35:27,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:27,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:27,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:27,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:35:27,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:35:27,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:35:27,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:27,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:27,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:35:27,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:35:27,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:35:27,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:35:28,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:35:28,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56954744] [2020-10-15 03:35:28,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:35:28,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 03:35:28,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843396559] [2020-10-15 03:35:28,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 03:35:28,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:35:28,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 03:35:28,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:35:28,054 INFO L87 Difference]: Start difference. First operand 238 states and 339 transitions. Second operand 11 states. [2020-10-15 03:35:28,407 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-15 03:35:30,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:35:30,044 INFO L93 Difference]: Finished difference Result 2958 states and 4675 transitions. [2020-10-15 03:35:30,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 03:35:30,045 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 106 [2020-10-15 03:35:30,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:35:30,063 INFO L225 Difference]: With dead ends: 2958 [2020-10-15 03:35:30,063 INFO L226 Difference]: Without dead ends: 2788 [2020-10-15 03:35:30,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2020-10-15 03:35:30,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2788 states. [2020-10-15 03:35:30,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2788 to 406. [2020-10-15 03:35:30,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2020-10-15 03:35:30,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 605 transitions. [2020-10-15 03:35:30,145 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 605 transitions. Word has length 106 [2020-10-15 03:35:30,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:35:30,145 INFO L479 AbstractCegarLoop]: Abstraction has 406 states and 605 transitions. [2020-10-15 03:35:30,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 03:35:30,146 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 605 transitions. [2020-10-15 03:35:30,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-15 03:35:30,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:35:30,149 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] [2020-10-15 03:35:30,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:35:30,149 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:35:30,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:35:30,150 INFO L82 PathProgramCache]: Analyzing trace with hash 300698715, now seen corresponding path program 1 times [2020-10-15 03:35:30,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:35:30,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219906258] [2020-10-15 03:35:30,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:35:30,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:30,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:30,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:30,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:30,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:30,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:31,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:31,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:31,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:35,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:35,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-15 03:35:35,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:35:35,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:35:35,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:35,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:35,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:35:35,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:35:35,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-15 03:35:35,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:35:35,497 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 03:35:35,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:35:35,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:35,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:35,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:35,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:35:35,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:35:35,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-15 03:35:35,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:35,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:35,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:35:35,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:35:35,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:35:35,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:35:35,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:35:35,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219906258] [2020-10-15 03:35:35,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:35:35,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:35:35,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194372946] [2020-10-15 03:35:35,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:35:35,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:35:35,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:35:35,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:35:35,588 INFO L87 Difference]: Start difference. First operand 406 states and 605 transitions. Second operand 7 states. [2020-10-15 03:35:35,882 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-15 03:35:36,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:35:36,757 INFO L93 Difference]: Finished difference Result 1185 states and 1836 transitions. [2020-10-15 03:35:36,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:35:36,758 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-10-15 03:35:36,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:35:36,763 INFO L225 Difference]: With dead ends: 1185 [2020-10-15 03:35:36,764 INFO L226 Difference]: Without dead ends: 847 [2020-10-15 03:35:36,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-15 03:35:36,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2020-10-15 03:35:36,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 439. [2020-10-15 03:35:36,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2020-10-15 03:35:36,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 654 transitions. [2020-10-15 03:35:36,809 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 654 transitions. Word has length 108 [2020-10-15 03:35:36,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:35:36,810 INFO L479 AbstractCegarLoop]: Abstraction has 439 states and 654 transitions. [2020-10-15 03:35:36,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:35:36,810 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 654 transitions. [2020-10-15 03:35:36,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-15 03:35:36,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:35:36,812 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] [2020-10-15 03:35:36,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:35:36,812 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:35:36,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:35:36,813 INFO L82 PathProgramCache]: Analyzing trace with hash -269319903, now seen corresponding path program 1 times [2020-10-15 03:35:36,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:35:36,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687935561] [2020-10-15 03:35:36,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:35:36,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:36,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:36,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:36,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:37,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:37,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:37,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:37,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:37,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:41,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:41,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-15 03:35:41,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:35:41,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:35:41,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:41,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:41,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:35:41,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:35:41,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-15 03:35:41,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:35:42,187 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 03:35:42,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:35:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:42,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:42,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:42,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:35:42,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:35:42,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-15 03:35:42,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:42,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:42,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:35:42,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:35:42,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:35:42,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:35:42,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:35:42,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687935561] [2020-10-15 03:35:42,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:35:42,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:35:42,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361740519] [2020-10-15 03:35:42,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:35:42,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:35:42,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:35:42,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:35:42,261 INFO L87 Difference]: Start difference. First operand 439 states and 654 transitions. Second operand 7 states. [2020-10-15 03:35:42,591 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-15 03:35:43,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:35:43,870 INFO L93 Difference]: Finished difference Result 1185 states and 1834 transitions. [2020-10-15 03:35:43,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:35:43,871 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-10-15 03:35:43,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:35:43,877 INFO L225 Difference]: With dead ends: 1185 [2020-10-15 03:35:43,877 INFO L226 Difference]: Without dead ends: 847 [2020-10-15 03:35:43,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-15 03:35:43,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2020-10-15 03:35:43,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 459. [2020-10-15 03:35:43,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-10-15 03:35:43,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 684 transitions. [2020-10-15 03:35:43,930 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 684 transitions. Word has length 108 [2020-10-15 03:35:43,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:35:43,934 INFO L479 AbstractCegarLoop]: Abstraction has 459 states and 684 transitions. [2020-10-15 03:35:43,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:35:43,934 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 684 transitions. [2020-10-15 03:35:43,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-15 03:35:43,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:35:43,936 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] [2020-10-15 03:35:43,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:35:43,937 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:35:43,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:35:43,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1419033959, now seen corresponding path program 1 times [2020-10-15 03:35:43,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:35:43,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649030945] [2020-10-15 03:35:43,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:35:43,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:44,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:44,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:44,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:44,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:44,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:44,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:44,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:44,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:48,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:48,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:48,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:48,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-15 03:35:48,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:35:48,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 03:35:48,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:48,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:48,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:35:48,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:35:48,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-15 03:35:48,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:35:49,390 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 03:35:49,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:35:49,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:49,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:49,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:49,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:35:49,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:35:49,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-15 03:35:49,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:49,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:49,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:35:49,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:35:49,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:35:49,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:35:49,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:35:49,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649030945] [2020-10-15 03:35:49,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:35:49,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:35:49,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769949889] [2020-10-15 03:35:49,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:35:49,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:35:49,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:35:49,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:35:49,497 INFO L87 Difference]: Start difference. First operand 459 states and 684 transitions. Second operand 7 states. [2020-10-15 03:35:49,748 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-15 03:35:50,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:35:50,806 INFO L93 Difference]: Finished difference Result 1251 states and 1934 transitions. [2020-10-15 03:35:50,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:35:50,807 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-10-15 03:35:50,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:35:50,814 INFO L225 Difference]: With dead ends: 1251 [2020-10-15 03:35:50,814 INFO L226 Difference]: Without dead ends: 913 [2020-10-15 03:35:50,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:35:50,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2020-10-15 03:35:50,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 475. [2020-10-15 03:35:50,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-10-15 03:35:50,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 706 transitions. [2020-10-15 03:35:50,870 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 706 transitions. Word has length 108 [2020-10-15 03:35:50,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:35:50,870 INFO L479 AbstractCegarLoop]: Abstraction has 475 states and 706 transitions. [2020-10-15 03:35:50,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:35:50,870 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 706 transitions. [2020-10-15 03:35:50,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-15 03:35:50,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:35:50,872 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] [2020-10-15 03:35:50,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:35:50,872 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:35:50,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:35:50,873 INFO L82 PathProgramCache]: Analyzing trace with hash -567304391, now seen corresponding path program 1 times [2020-10-15 03:35:50,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:35:50,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195571366] [2020-10-15 03:35:50,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:35:50,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:50,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:51,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:51,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:51,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:51,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:51,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:52,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:52,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:52,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:52,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:55,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:55,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-15 03:35:55,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:35:55,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 03:35:55,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:55,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:55,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:35:55,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:35:55,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-15 03:35:55,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:35:56,202 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 03:35:56,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:35:56,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:56,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:56,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:56,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:35:56,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:35:56,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 03:35:56,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:56,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:56,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:35:56,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:35:56,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:35:56,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:35:56,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:35:56,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195571366] [2020-10-15 03:35:56,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:35:56,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:35:56,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767216250] [2020-10-15 03:35:56,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:35:56,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:35:56,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:35:56,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:35:56,272 INFO L87 Difference]: Start difference. First operand 475 states and 706 transitions. Second operand 7 states. [2020-10-15 03:35:56,543 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-15 03:35:57,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:35:57,603 INFO L93 Difference]: Finished difference Result 1181 states and 1822 transitions. [2020-10-15 03:35:57,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:35:57,603 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-10-15 03:35:57,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:35:57,610 INFO L225 Difference]: With dead ends: 1181 [2020-10-15 03:35:57,610 INFO L226 Difference]: Without dead ends: 843 [2020-10-15 03:35:57,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-15 03:35:57,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2020-10-15 03:35:57,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 535. [2020-10-15 03:35:57,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 535 states. [2020-10-15 03:35:57,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 800 transitions. [2020-10-15 03:35:57,686 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 800 transitions. Word has length 108 [2020-10-15 03:35:57,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:35:57,686 INFO L479 AbstractCegarLoop]: Abstraction has 535 states and 800 transitions. [2020-10-15 03:35:57,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:35:57,686 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 800 transitions. [2020-10-15 03:35:57,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-15 03:35:57,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:35:57,688 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] [2020-10-15 03:35:57,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:35:57,688 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:35:57,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:35:57,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1642036387, now seen corresponding path program 1 times [2020-10-15 03:35:57,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:35:57,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024529717] [2020-10-15 03:35:57,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:35:57,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:57,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:57,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:57,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:57,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:58,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:58,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:58,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:58,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:59,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:59,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:02,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:02,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-15 03:36:02,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:36:02,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:36:02,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:02,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:02,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:36:02,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:36:02,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-15 03:36:02,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:03,025 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 03:36:03,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:36:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:03,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:03,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:03,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:36:03,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:36:03,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:36:03,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:03,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:03,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:36:03,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:36:03,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:36:03,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:03,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:36:03,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024529717] [2020-10-15 03:36:03,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:36:03,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:36:03,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577920102] [2020-10-15 03:36:03,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:36:03,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:36:03,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:36:03,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:36:03,084 INFO L87 Difference]: Start difference. First operand 535 states and 800 transitions. Second operand 5 states. [2020-10-15 03:36:03,340 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-15 03:36:04,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:36:04,403 INFO L93 Difference]: Finished difference Result 1596 states and 2477 transitions. [2020-10-15 03:36:04,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:36:04,403 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-15 03:36:04,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:36:04,410 INFO L225 Difference]: With dead ends: 1596 [2020-10-15 03:36:04,410 INFO L226 Difference]: Without dead ends: 1258 [2020-10-15 03:36:04,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:36:04,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2020-10-15 03:36:04,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1254. [2020-10-15 03:36:04,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1254 states. [2020-10-15 03:36:04,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 1926 transitions. [2020-10-15 03:36:04,532 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 1926 transitions. Word has length 108 [2020-10-15 03:36:04,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:36:04,533 INFO L479 AbstractCegarLoop]: Abstraction has 1254 states and 1926 transitions. [2020-10-15 03:36:04,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:36:04,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 1926 transitions. [2020-10-15 03:36:04,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-15 03:36:04,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:36:04,535 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] [2020-10-15 03:36:04,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:36:04,535 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:36:04,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:36:04,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1662085730, now seen corresponding path program 1 times [2020-10-15 03:36:04,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:36:04,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204700402] [2020-10-15 03:36:04,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:36:04,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:04,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:04,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:04,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:04,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:04,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:04,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:05,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:05,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:09,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:09,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-15 03:36:09,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:36:09,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:36:09,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:09,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:09,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 03:36:09,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:36:09,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-15 03:36:09,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:10,004 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 03:36:10,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:36:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:10,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:10,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:10,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:36:10,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:36:10,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:36:10,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:10,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:10,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:36:10,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:36:10,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:36:10,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:10,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:36:10,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204700402] [2020-10-15 03:36:10,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:36:10,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 03:36:10,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070975711] [2020-10-15 03:36:10,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 03:36:10,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:36:10,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 03:36:10,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:36:10,071 INFO L87 Difference]: Start difference. First operand 1254 states and 1926 transitions. Second operand 11 states. [2020-10-15 03:36:10,491 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-10-15 03:36:12,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:36:12,528 INFO L93 Difference]: Finished difference Result 8826 states and 13851 transitions. [2020-10-15 03:36:12,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 03:36:12,529 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-10-15 03:36:12,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:36:12,560 INFO L225 Difference]: With dead ends: 8826 [2020-10-15 03:36:12,560 INFO L226 Difference]: Without dead ends: 7844 [2020-10-15 03:36:12,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2020-10-15 03:36:12,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7844 states. [2020-10-15 03:36:12,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7844 to 1254. [2020-10-15 03:36:12,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1254 states. [2020-10-15 03:36:12,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 1920 transitions. [2020-10-15 03:36:12,804 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 1920 transitions. Word has length 108 [2020-10-15 03:36:12,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:36:12,804 INFO L479 AbstractCegarLoop]: Abstraction has 1254 states and 1920 transitions. [2020-10-15 03:36:12,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 03:36:12,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 1920 transitions. [2020-10-15 03:36:12,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-15 03:36:12,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:36:12,806 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] [2020-10-15 03:36:12,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:36:12,806 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:36:12,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:36:12,807 INFO L82 PathProgramCache]: Analyzing trace with hash -591049613, now seen corresponding path program 1 times [2020-10-15 03:36:12,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:36:12,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [560078313] [2020-10-15 03:36:12,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:36:12,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:12,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:12,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:12,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:12,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:13,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:13,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:13,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:14,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:14,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:14,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:17,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:17,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-15 03:36:17,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:36:17,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:36:17,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:17,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:17,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:36:17,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:36:17,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-15 03:36:17,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:18,152 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 03:36:18,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:36:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:18,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:18,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:18,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:36:18,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:36:18,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:36:18,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:18,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:18,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:36:18,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:36:18,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:36:18,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:18,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:36:18,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [560078313] [2020-10-15 03:36:18,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:36:18,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:36:18,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724433420] [2020-10-15 03:36:18,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:36:18,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:36:18,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:36:18,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:36:18,209 INFO L87 Difference]: Start difference. First operand 1254 states and 1920 transitions. Second operand 7 states. [2020-10-15 03:36:18,479 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-15 03:36:19,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:36:19,646 INFO L93 Difference]: Finished difference Result 3278 states and 5078 transitions. [2020-10-15 03:36:19,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:36:19,646 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-10-15 03:36:19,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:36:19,656 INFO L225 Difference]: With dead ends: 3278 [2020-10-15 03:36:19,656 INFO L226 Difference]: Without dead ends: 2264 [2020-10-15 03:36:19,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:36:19,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2264 states. [2020-10-15 03:36:19,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2264 to 1246. [2020-10-15 03:36:19,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1246 states. [2020-10-15 03:36:19,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 1900 transitions. [2020-10-15 03:36:19,903 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 1900 transitions. Word has length 108 [2020-10-15 03:36:19,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:36:19,904 INFO L479 AbstractCegarLoop]: Abstraction has 1246 states and 1900 transitions. [2020-10-15 03:36:19,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:36:19,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 1900 transitions. [2020-10-15 03:36:19,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-15 03:36:19,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:36:19,907 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] [2020-10-15 03:36:19,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:36:19,907 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:36:19,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:36:19,908 INFO L82 PathProgramCache]: Analyzing trace with hash -963575507, now seen corresponding path program 1 times [2020-10-15 03:36:19,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:36:19,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845392320] [2020-10-15 03:36:19,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:36:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:19,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:20,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:20,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:20,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:20,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:20,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:20,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:20,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:23,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:23,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:24,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:24,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-15 03:36:24,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:36:24,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 03:36:24,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:24,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:24,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:36:24,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:36:24,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-15 03:36:24,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:25,219 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 03:36:25,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:36:25,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:25,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:25,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:25,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:36:25,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:36:25,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:36:25,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:25,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:25,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:36:25,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:36:25,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:36:25,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:25,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:36:25,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845392320] [2020-10-15 03:36:25,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:36:25,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:36:25,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336117070] [2020-10-15 03:36:25,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:36:25,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:36:25,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:36:25,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:36:25,262 INFO L87 Difference]: Start difference. First operand 1246 states and 1900 transitions. Second operand 7 states. [2020-10-15 03:36:25,516 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-15 03:36:26,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:36:26,710 INFO L93 Difference]: Finished difference Result 3230 states and 5010 transitions. [2020-10-15 03:36:26,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:36:26,711 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-10-15 03:36:26,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:36:26,720 INFO L225 Difference]: With dead ends: 3230 [2020-10-15 03:36:26,720 INFO L226 Difference]: Without dead ends: 2220 [2020-10-15 03:36:26,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-15 03:36:26,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2220 states. [2020-10-15 03:36:26,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2220 to 1232. [2020-10-15 03:36:26,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1232 states. [2020-10-15 03:36:26,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1877 transitions. [2020-10-15 03:36:26,919 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1877 transitions. Word has length 108 [2020-10-15 03:36:26,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:36:26,920 INFO L479 AbstractCegarLoop]: Abstraction has 1232 states and 1877 transitions. [2020-10-15 03:36:26,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:36:26,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1877 transitions. [2020-10-15 03:36:26,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-15 03:36:26,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:36:26,921 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] [2020-10-15 03:36:26,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:36:26,922 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:36:26,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:36:26,922 INFO L82 PathProgramCache]: Analyzing trace with hash -406635295, now seen corresponding path program 1 times [2020-10-15 03:36:26,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:36:26,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133635094] [2020-10-15 03:36:26,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:36:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:26,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:27,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:27,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:27,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:27,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:27,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:27,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:27,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:30,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:30,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:31,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:31,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-15 03:36:31,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:36:31,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:36:31,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:31,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:31,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 03:36:31,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-15 03:36:31,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-15 03:36:31,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:32,285 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 03:36:32,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:36:32,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:32,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:32,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:32,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:36:32,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:36:32,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:36:32,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:32,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:32,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:36:32,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:36:32,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:36:32,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:32,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:36:32,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133635094] [2020-10-15 03:36:32,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:36:32,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 03:36:32,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355045656] [2020-10-15 03:36:32,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 03:36:32,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:36:32,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 03:36:32,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:36:32,326 INFO L87 Difference]: Start difference. First operand 1232 states and 1877 transitions. Second operand 11 states. [2020-10-15 03:36:32,665 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-15 03:36:35,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:36:35,315 INFO L93 Difference]: Finished difference Result 12258 states and 19224 transitions. [2020-10-15 03:36:35,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 03:36:35,316 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-10-15 03:36:35,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:36:35,352 INFO L225 Difference]: With dead ends: 12258 [2020-10-15 03:36:35,353 INFO L226 Difference]: Without dead ends: 11276 [2020-10-15 03:36:35,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2020-10-15 03:36:35,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11276 states. [2020-10-15 03:36:35,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11276 to 2522. [2020-10-15 03:36:35,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2522 states. [2020-10-15 03:36:35,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2522 states to 2522 states and 3899 transitions. [2020-10-15 03:36:35,791 INFO L78 Accepts]: Start accepts. Automaton has 2522 states and 3899 transitions. Word has length 108 [2020-10-15 03:36:35,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:36:35,791 INFO L479 AbstractCegarLoop]: Abstraction has 2522 states and 3899 transitions. [2020-10-15 03:36:35,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 03:36:35,792 INFO L276 IsEmpty]: Start isEmpty. Operand 2522 states and 3899 transitions. [2020-10-15 03:36:35,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-15 03:36:35,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:36:35,793 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] [2020-10-15 03:36:35,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:36:35,794 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:36:35,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:36:35,794 INFO L82 PathProgramCache]: Analyzing trace with hash -16859142, now seen corresponding path program 1 times [2020-10-15 03:36:35,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:36:35,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736589950] [2020-10-15 03:36:35,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:36:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:35,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:35,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:35,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:35,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:36,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:36,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:37,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:37,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:40,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:40,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-15 03:36:40,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:36:40,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:36:40,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:40,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:40,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:36:40,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-15 03:36:40,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-15 03:36:40,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:41,070 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 03:36:41,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:36:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:41,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:41,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:41,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:36:41,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:36:41,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:36:41,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:41,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:41,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:36:41,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:36:41,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:36:41,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:41,101 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 03:36:41,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736589950] [2020-10-15 03:36:41,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:36:41,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:36:41,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296796483] [2020-10-15 03:36:41,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:36:41,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:36:41,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:36:41,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:36:41,103 INFO L87 Difference]: Start difference. First operand 2522 states and 3899 transitions. Second operand 4 states. [2020-10-15 03:36:41,371 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-15 03:36:42,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:36:42,670 INFO L93 Difference]: Finished difference Result 6911 states and 10767 transitions. [2020-10-15 03:36:42,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:36:42,671 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 109 [2020-10-15 03:36:42,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:36:42,681 INFO L225 Difference]: With dead ends: 6911 [2020-10-15 03:36:42,681 INFO L226 Difference]: Without dead ends: 4564 [2020-10-15 03:36:42,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:36:42,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4564 states. [2020-10-15 03:36:43,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4564 to 4562. [2020-10-15 03:36:43,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4562 states. [2020-10-15 03:36:43,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4562 states to 4562 states and 7062 transitions. [2020-10-15 03:36:43,521 INFO L78 Accepts]: Start accepts. Automaton has 4562 states and 7062 transitions. Word has length 109 [2020-10-15 03:36:43,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:36:43,521 INFO L479 AbstractCegarLoop]: Abstraction has 4562 states and 7062 transitions. [2020-10-15 03:36:43,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:36:43,521 INFO L276 IsEmpty]: Start isEmpty. Operand 4562 states and 7062 transitions. [2020-10-15 03:36:43,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-15 03:36:43,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:36:43,523 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] [2020-10-15 03:36:43,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:36:43,523 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:36:43,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:36:43,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1675760192, now seen corresponding path program 1 times [2020-10-15 03:36:43,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:36:43,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967099955] [2020-10-15 03:36:43,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:36:43,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:43,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:43,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:43,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:43,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:44,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:44,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:45,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:45,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:48,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:48,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-15 03:36:48,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:36:48,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-15 03:36:48,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:48,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:48,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:36:48,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:36:48,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-15 03:36:48,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:48,881 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 03:36:48,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:36:48,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:48,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:48,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:48,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:36:48,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:36:48,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 03:36:48,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:48,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:48,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:36:48,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:36:48,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:36:48,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:36:48,925 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 03:36:48,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967099955] [2020-10-15 03:36:48,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:36:48,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:36:48,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108922410] [2020-10-15 03:36:48,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:36:48,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:36:48,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:36:48,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:36:48,927 INFO L87 Difference]: Start difference. First operand 4562 states and 7062 transitions. Second operand 6 states. [2020-10-15 03:36:49,191 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-15 03:36:51,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:36:51,065 INFO L93 Difference]: Finished difference Result 13245 states and 20588 transitions. [2020-10-15 03:36:51,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:36:51,066 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2020-10-15 03:36:51,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:36:51,085 INFO L225 Difference]: With dead ends: 13245 [2020-10-15 03:36:51,086 INFO L226 Difference]: Without dead ends: 8852 [2020-10-15 03:36:51,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:36:51,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8852 states. [2020-10-15 03:36:52,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8852 to 8850. [2020-10-15 03:36:52,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8850 states. [2020-10-15 03:36:52,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8850 states to 8850 states and 13711 transitions. [2020-10-15 03:36:52,529 INFO L78 Accepts]: Start accepts. Automaton has 8850 states and 13711 transitions. Word has length 110 [2020-10-15 03:36:52,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:36:52,530 INFO L479 AbstractCegarLoop]: Abstraction has 8850 states and 13711 transitions. [2020-10-15 03:36:52,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:36:52,530 INFO L276 IsEmpty]: Start isEmpty. Operand 8850 states and 13711 transitions. [2020-10-15 03:36:52,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-15 03:36:52,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:36:52,531 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] [2020-10-15 03:36:52,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:36:52,532 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:36:52,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:36:52,532 INFO L82 PathProgramCache]: Analyzing trace with hash 211688635, now seen corresponding path program 1 times [2020-10-15 03:36:52,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:36:52,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317328894] [2020-10-15 03:36:52,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:36:52,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:52,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:52,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:52,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:52,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:52,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:53,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:53,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:56,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:56,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-15 03:36:56,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:36:56,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3848 [2020-10-15 03:36:56,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:56,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:56,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:36:56,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-15 03:36:56,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-15 03:36:56,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:56,658 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 03:36:56,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:36:56,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:56,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:56,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:56,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:36:56,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:36:56,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:36:56,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:56,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:56,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:36:56,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:36:56,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:36:56,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:56,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:36:56,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317328894] [2020-10-15 03:36:56,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:36:56,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:36:56,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223462553] [2020-10-15 03:36:56,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:36:56,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:36:56,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:36:56,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:36:56,693 INFO L87 Difference]: Start difference. First operand 8850 states and 13711 transitions. Second operand 4 states. [2020-10-15 03:36:56,952 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-15 03:37:00,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:37:00,116 INFO L93 Difference]: Finished difference Result 25283 states and 39201 transitions. [2020-10-15 03:37:00,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:37:00,117 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2020-10-15 03:37:00,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:37:00,144 INFO L225 Difference]: With dead ends: 25283 [2020-10-15 03:37:00,145 INFO L226 Difference]: Without dead ends: 16548 [2020-10-15 03:37:00,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:37:00,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16548 states. [2020-10-15 03:37:02,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16548 to 16546. [2020-10-15 03:37:02,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16546 states. [2020-10-15 03:37:02,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16546 states to 16546 states and 25510 transitions. [2020-10-15 03:37:02,635 INFO L78 Accepts]: Start accepts. Automaton has 16546 states and 25510 transitions. Word has length 110 [2020-10-15 03:37:02,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:37:02,635 INFO L479 AbstractCegarLoop]: Abstraction has 16546 states and 25510 transitions. [2020-10-15 03:37:02,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:37:02,635 INFO L276 IsEmpty]: Start isEmpty. Operand 16546 states and 25510 transitions. [2020-10-15 03:37:02,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-15 03:37:02,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:37:02,636 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] [2020-10-15 03:37:02,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:37:02,636 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:37:02,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:37:02,636 INFO L82 PathProgramCache]: Analyzing trace with hash 582935639, now seen corresponding path program 1 times [2020-10-15 03:37:02,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:37:02,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280842961] [2020-10-15 03:37:02,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:37:02,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:02,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:02,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:02,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:02,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:02,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:04,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:04,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:07,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:07,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-15 03:37:07,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:37:07,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:37:07,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:07,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:07,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:37:07,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:37:07,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-15 03:37:07,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:37:07,947 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 03:37:07,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:37:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:07,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:07,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:07,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:37:07,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:37:07,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 03:37:07,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:07,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:07,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:37:07,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:37:07,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:37:07,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:37:07,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:37:07,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280842961] [2020-10-15 03:37:07,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:37:07,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:37:07,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714767515] [2020-10-15 03:37:07,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:37:07,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:37:07,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:37:07,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:37:07,995 INFO L87 Difference]: Start difference. First operand 16546 states and 25510 transitions. Second operand 6 states. [2020-10-15 03:37:08,276 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-15 03:37:13,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:37:13,725 INFO L93 Difference]: Finished difference Result 49185 states and 75878 transitions. [2020-10-15 03:37:13,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:37:13,726 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2020-10-15 03:37:13,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:37:13,762 INFO L225 Difference]: With dead ends: 49185 [2020-10-15 03:37:13,762 INFO L226 Difference]: Without dead ends: 32748 [2020-10-15 03:37:13,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:37:13,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32748 states. [2020-10-15 03:37:19,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32748 to 32746. [2020-10-15 03:37:19,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32746 states. [2020-10-15 03:37:19,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32746 states to 32746 states and 50379 transitions. [2020-10-15 03:37:19,613 INFO L78 Accepts]: Start accepts. Automaton has 32746 states and 50379 transitions. Word has length 111 [2020-10-15 03:37:19,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:37:19,613 INFO L479 AbstractCegarLoop]: Abstraction has 32746 states and 50379 transitions. [2020-10-15 03:37:19,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:37:19,613 INFO L276 IsEmpty]: Start isEmpty. Operand 32746 states and 50379 transitions. [2020-10-15 03:37:19,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-15 03:37:19,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:37:19,614 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] [2020-10-15 03:37:19,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 03:37:19,615 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:37:19,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:37:19,615 INFO L82 PathProgramCache]: Analyzing trace with hash -885558212, now seen corresponding path program 1 times [2020-10-15 03:37:19,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:37:19,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437809371] [2020-10-15 03:37:19,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:37:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:19,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:19,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:19,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:19,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:20,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:20,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:21,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:21,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-15 03:37:21,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:37:21,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2018 [2020-10-15 03:37:21,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:21,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:21,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:37:21,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-15 03:37:21,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 03:37:21,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:37:21,904 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 03:37:21,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:37:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:21,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:21,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:21,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:37:21,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:37:21,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:37:21,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:21,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:21,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:37:21,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:37:21,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:37:21,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:37:21,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:37:21,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437809371] [2020-10-15 03:37:21,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:37:21,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:37:21,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797070367] [2020-10-15 03:37:21,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:37:21,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:37:21,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:37:21,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:37:21,939 INFO L87 Difference]: Start difference. First operand 32746 states and 50379 transitions. Second operand 4 states. [2020-10-15 03:37:22,210 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-15 03:37:31,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:37:31,976 INFO L93 Difference]: Finished difference Result 94277 states and 144840 transitions. [2020-10-15 03:37:31,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:37:31,976 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2020-10-15 03:37:31,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:37:32,040 INFO L225 Difference]: With dead ends: 94277 [2020-10-15 03:37:32,040 INFO L226 Difference]: Without dead ends: 61664 [2020-10-15 03:37:32,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:37:32,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61664 states. [2020-10-15 03:37:43,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61664 to 61662. [2020-10-15 03:37:43,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61662 states. [2020-10-15 03:37:43,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61662 states to 61662 states and 94166 transitions. [2020-10-15 03:37:43,200 INFO L78 Accepts]: Start accepts. Automaton has 61662 states and 94166 transitions. Word has length 111 [2020-10-15 03:37:43,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:37:43,201 INFO L479 AbstractCegarLoop]: Abstraction has 61662 states and 94166 transitions. [2020-10-15 03:37:43,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:37:43,201 INFO L276 IsEmpty]: Start isEmpty. Operand 61662 states and 94166 transitions. [2020-10-15 03:37:43,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-15 03:37:43,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:37:43,203 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] [2020-10-15 03:37:43,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 03:37:43,203 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:37:43,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:37:43,203 INFO L82 PathProgramCache]: Analyzing trace with hash 46668996, now seen corresponding path program 1 times [2020-10-15 03:37:43,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:37:43,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [815133215] [2020-10-15 03:37:43,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:37:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:43,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:43,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:43,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:43,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:43,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:44,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:44,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-15 03:37:44,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:37:44,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1130 [2020-10-15 03:37:44,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:44,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:44,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:37:44,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-15 03:37:44,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-15 03:37:44,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:37:44,619 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 03:37:44,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:37:44,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:44,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:44,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:44,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:37:44,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:37:44,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:37:44,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:44,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:44,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:37:44,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:37:44,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:37:44,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:37:44,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:37:44,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [815133215] [2020-10-15 03:37:44,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:37:44,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:37:44,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439055524] [2020-10-15 03:37:44,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:37:44,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:37:44,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:37:44,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:37:44,658 INFO L87 Difference]: Start difference. First operand 61662 states and 94166 transitions. Second operand 4 states. [2020-10-15 03:37:44,931 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-15 03:38:03,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:38:03,649 INFO L93 Difference]: Finished difference Result 177417 states and 270353 transitions. [2020-10-15 03:38:03,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:38:03,650 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2020-10-15 03:38:03,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:38:03,781 INFO L225 Difference]: With dead ends: 177417 [2020-10-15 03:38:03,781 INFO L226 Difference]: Without dead ends: 115924 [2020-10-15 03:38:03,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:38:03,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115924 states. [2020-10-15 03:38:22,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115924 to 115922. [2020-10-15 03:38:22,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115922 states. [2020-10-15 03:38:22,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115922 states to 115922 states and 175489 transitions. [2020-10-15 03:38:22,774 INFO L78 Accepts]: Start accepts. Automaton has 115922 states and 175489 transitions. Word has length 112 [2020-10-15 03:38:22,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:38:22,774 INFO L479 AbstractCegarLoop]: Abstraction has 115922 states and 175489 transitions. [2020-10-15 03:38:22,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:38:22,775 INFO L276 IsEmpty]: Start isEmpty. Operand 115922 states and 175489 transitions. [2020-10-15 03:38:22,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-15 03:38:22,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:38:22,775 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] [2020-10-15 03:38:22,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 03:38:22,776 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:38:22,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:38:22,776 INFO L82 PathProgramCache]: Analyzing trace with hash 173879568, now seen corresponding path program 1 times [2020-10-15 03:38:22,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:38:22,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648918745] [2020-10-15 03:38:22,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:38:22,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:38:22,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:22,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:22,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:22,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:23,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:38:23,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-15 03:38:23,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:38:23,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1094 [2020-10-15 03:38:23,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:38:23,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:38:23,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:38:23,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-15 03:38:23,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-15 03:38:23,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:38:24,145 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 03:38:24,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:38:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:38:24,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:24,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:38:24,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:38:24,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:38:24,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:38:24,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:38:24,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:38:24,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:38:24,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:38:24,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:38:24,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:38:24,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:38:24,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648918745] [2020-10-15 03:38:24,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:38:24,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:38:24,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35325122] [2020-10-15 03:38:24,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:38:24,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:38:24,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:38:24,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:38:24,192 INFO L87 Difference]: Start difference. First operand 115922 states and 175489 transitions. Second operand 4 states. [2020-10-15 03:38:24,452 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-15 03:38:59,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:38:59,197 INFO L93 Difference]: Finished difference Result 333029 states and 502683 transitions. [2020-10-15 03:38:59,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:38:59,197 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2020-10-15 03:38:59,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:38:59,480 INFO L225 Difference]: With dead ends: 333029 [2020-10-15 03:38:59,481 INFO L226 Difference]: Without dead ends: 217294 [2020-10-15 03:38:59,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:38:59,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217294 states.