/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=NARROWEST --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_floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:02:34,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:02:34,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:02:34,443 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:02:34,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:02:34,445 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:02:34,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:02:34,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:02:34,449 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:02:34,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:02:34,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:02:34,453 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:02:34,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:02:34,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:02:34,457 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:02:34,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:02:34,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:02:34,462 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:02:34,467 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:02:34,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:02:34,473 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:02:34,475 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:02:34,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:02:34,477 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:02:34,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:02:34,485 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:02:34,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:02:34,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:02:34,486 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:02:34,490 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:02:34,491 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:02:34,492 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:02:34,492 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:02:34,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:02:34,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:02:34,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:02:34,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:02:34,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:02:34,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:02:34,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:02:34,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:02:34,500 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 [2020-10-13 14:02:34,554 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:02:34,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:02:34,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:02:34,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:02:34,560 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:02:34,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:02:34,561 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:02:34,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:02:34,561 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:02:34,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:02:34,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:02:34,562 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:02:34,562 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:02:34,562 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:02:34,562 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:02:34,562 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:02:34,563 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:02:34,563 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:02:34,564 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:02:34,564 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:02:34,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:02:34,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:02:34,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:02:34,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:02:34,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:02:34,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:02:34,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:02:34,566 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:02:34,566 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:02:34,566 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 14:02:34,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:02:34,892 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:02:34,896 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:02:34,898 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:02:34,898 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:02:34,899 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-13 14:02:34,963 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f74a1682/d37d7c75267a4c18a4cd93ea81ed0c1e/FLAGbce000cd7 [2020-10-13 14:02:35,639 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:02:35,640 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-13 14:02:35,663 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f74a1682/d37d7c75267a4c18a4cd93ea81ed0c1e/FLAGbce000cd7 [2020-10-13 14:02:35,800 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f74a1682/d37d7c75267a4c18a4cd93ea81ed0c1e [2020-10-13 14:02:35,811 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:02:35,813 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:02:35,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:02:35,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:02:35,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:02:35,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:02:35" (1/1) ... [2020-10-13 14:02:35,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e64e3ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:35, skipping insertion in model container [2020-10-13 14:02:35,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:02:35" (1/1) ... [2020-10-13 14:02:35,829 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:02:35,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:02:37,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:02:37,521 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:02:38,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:02:38,403 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:02:38,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:38 WrapperNode [2020-10-13 14:02:38,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:02:38,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:02:38,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:02:38,404 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:02:38,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:38" (1/1) ... [2020-10-13 14:02:38,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:38" (1/1) ... [2020-10-13 14:02:38,474 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:38" (1/1) ... [2020-10-13 14:02:38,475 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:38" (1/1) ... [2020-10-13 14:02:38,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:38" (1/1) ... [2020-10-13 14:02:38,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:38" (1/1) ... [2020-10-13 14:02:38,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:38" (1/1) ... [2020-10-13 14:02:38,615 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:02:38,616 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:02:38,616 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:02:38,616 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:02:38,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:38" (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 [2020-10-13 14:02:38,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:02:38,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:02:38,703 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:02:38,703 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:02:38,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:02:38,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:02:38,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:02:38,705 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:02:38,705 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:02:38,705 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:02:38,705 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:02:38,706 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:02:38,706 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:02:38,706 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:02:38,706 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:02:38,707 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:02:38,707 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:02:38,708 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:02:38,708 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:02:38,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:02:38,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:02:41,762 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:02:41,763 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:02:41,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:02:41 BoogieIcfgContainer [2020-10-13 14:02:41,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:02:41,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:02:41,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:02:41,778 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:02:41,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:02:35" (1/3) ... [2020-10-13 14:02:41,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7103643e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:02:41, skipping insertion in model container [2020-10-13 14:02:41,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:38" (2/3) ... [2020-10-13 14:02:41,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7103643e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:02:41, skipping insertion in model container [2020-10-13 14:02:41,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:02:41" (3/3) ... [2020-10-13 14:02:41,781 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-13 14:02:41,792 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:02:41,801 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-10-13 14:02:41,815 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-10-13 14:02:41,843 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:02:41,844 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:02:41,844 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:02:41,844 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:02:41,844 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:02:41,844 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:02:41,845 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:02:41,845 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:02:41,884 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-13 14:02:41,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-13 14:02:41,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:02:41,911 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:02:41,911 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:02:41,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:02:41,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1970494587, now seen corresponding path program 1 times [2020-10-13 14:02:41,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:02:41,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [9988476] [2020-10-13 14:02:41,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:02:42,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:43,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:43,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:44,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:44,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:45,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:45,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:45,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:45,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:45,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:46,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:46,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:46,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:46,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:47,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:47,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-13 14:02:47,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:02:47,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-13 14:02:47,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:47,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:02:47,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:02:47,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 14:02:47,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 14:02:48,830 WARN L193 SmtUtils]: Spent 687.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-13 14:02:48,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:02:48,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:48,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:48,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:48,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:02:48,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:02:48,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 14:02:48,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:48,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:02:48,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:02:48,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:02:48,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:02:49,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:02:49,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [9988476] [2020-10-13 14:02:49,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:02:49,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:02:49,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646102704] [2020-10-13 14:02:49,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:02:49,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:02:49,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:02:49,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:02:49,180 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 5 states. [2020-10-13 14:03:01,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:03:01,401 INFO L93 Difference]: Finished difference Result 2645 states and 4771 transitions. [2020-10-13 14:03:01,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 14:03:01,404 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 302 [2020-10-13 14:03:01,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:03:01,433 INFO L225 Difference]: With dead ends: 2645 [2020-10-13 14:03:01,434 INFO L226 Difference]: Without dead ends: 1778 [2020-10-13 14:03:01,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:03:01,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2020-10-13 14:03:01,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1687. [2020-10-13 14:03:01,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1687 states. [2020-10-13 14:03:01,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2581 transitions. [2020-10-13 14:03:01,619 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2581 transitions. Word has length 302 [2020-10-13 14:03:01,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:03:01,620 INFO L479 AbstractCegarLoop]: Abstraction has 1687 states and 2581 transitions. [2020-10-13 14:03:01,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:03:01,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2581 transitions. [2020-10-13 14:03:01,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-13 14:03:01,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:03:01,629 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:03:01,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:03:01,630 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:03:01,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:03:01,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1373320818, now seen corresponding path program 1 times [2020-10-13 14:03:01,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:03:01,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050296306] [2020-10-13 14:03:01,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:03:01,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:01,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:01,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:01,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:02,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:02,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:02,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:02,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:02,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:03,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:03,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:03,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:05,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:05,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:05,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:06,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:06,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-13 14:03:06,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:03:06,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 14:03:06,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:06,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:03:06,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 14:03:06,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 14:03:06,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:07,334 WARN L193 SmtUtils]: Spent 509.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-13 14:03:07,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:03:07,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:07,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:07,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:07,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:03:07,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:03:07,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 14:03:07,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:07,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:03:07,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:03:07,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:03:07,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:07,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:03:07,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050296306] [2020-10-13 14:03:07,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:03:07,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:03:07,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044241512] [2020-10-13 14:03:07,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:03:07,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:03:07,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:03:07,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:03:07,510 INFO L87 Difference]: Start difference. First operand 1687 states and 2581 transitions. Second operand 4 states. [2020-10-13 14:03:18,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:03:18,963 INFO L93 Difference]: Finished difference Result 5016 states and 7669 transitions. [2020-10-13 14:03:18,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:03:18,963 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 304 [2020-10-13 14:03:18,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:03:18,982 INFO L225 Difference]: With dead ends: 5016 [2020-10-13 14:03:18,982 INFO L226 Difference]: Without dead ends: 3354 [2020-10-13 14:03:18,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:03:18,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3354 states. [2020-10-13 14:03:19,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3354 to 1700. [2020-10-13 14:03:19,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1700 states. [2020-10-13 14:03:19,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1700 states to 1700 states and 2601 transitions. [2020-10-13 14:03:19,170 INFO L78 Accepts]: Start accepts. Automaton has 1700 states and 2601 transitions. Word has length 304 [2020-10-13 14:03:19,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:03:19,170 INFO L479 AbstractCegarLoop]: Abstraction has 1700 states and 2601 transitions. [2020-10-13 14:03:19,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:03:19,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1700 states and 2601 transitions. [2020-10-13 14:03:19,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-13 14:03:19,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:03:19,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:03:19,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:03:19,178 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:03:19,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:03:19,178 INFO L82 PathProgramCache]: Analyzing trace with hash -699331511, now seen corresponding path program 1 times [2020-10-13 14:03:19,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:03:19,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397739511] [2020-10-13 14:03:19,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:03:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:19,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:19,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:19,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:20,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:20,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:20,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:20,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:20,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:20,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:20,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:20,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:21,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:21,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:21,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:24,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:24,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-13 14:03:24,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:03:24,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:03:24,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:24,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:03:24,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:03:24,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-13 14:03:24,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:24,948 WARN L193 SmtUtils]: Spent 518.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-13 14:03:24,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:03:24,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:24,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:24,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:24,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:03:24,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:03:24,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 14:03:24,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:24,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:03:24,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:03:24,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:03:24,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:03:25,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:03:25,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397739511] [2020-10-13 14:03:25,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:03:25,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:03:25,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156619753] [2020-10-13 14:03:25,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:03:25,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:03:25,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:03:25,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:03:25,194 INFO L87 Difference]: Start difference. First operand 1700 states and 2601 transitions. Second operand 5 states. [2020-10-13 14:03:33,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:03:33,889 INFO L93 Difference]: Finished difference Result 4978 states and 7603 transitions. [2020-10-13 14:03:33,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:03:33,890 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 304 [2020-10-13 14:03:33,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:03:33,907 INFO L225 Difference]: With dead ends: 4978 [2020-10-13 14:03:33,907 INFO L226 Difference]: Without dead ends: 3309 [2020-10-13 14:03:33,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:03:33,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3309 states. [2020-10-13 14:03:34,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3309 to 3221. [2020-10-13 14:03:34,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3221 states. [2020-10-13 14:03:34,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3221 states to 3221 states and 4911 transitions. [2020-10-13 14:03:34,089 INFO L78 Accepts]: Start accepts. Automaton has 3221 states and 4911 transitions. Word has length 304 [2020-10-13 14:03:34,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:03:34,091 INFO L479 AbstractCegarLoop]: Abstraction has 3221 states and 4911 transitions. [2020-10-13 14:03:34,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:03:34,092 INFO L276 IsEmpty]: Start isEmpty. Operand 3221 states and 4911 transitions. [2020-10-13 14:03:34,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-13 14:03:34,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:03:34,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:03:34,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:03:34,103 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:03:34,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:03:34,104 INFO L82 PathProgramCache]: Analyzing trace with hash -782842594, now seen corresponding path program 1 times [2020-10-13 14:03:34,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:03:34,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692774804] [2020-10-13 14:03:34,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:03:34,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:34,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:34,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:34,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:34,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:34,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:34,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:35,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:35,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:35,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:35,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:35,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:35,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:35,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:39,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:39,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:39,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-13 14:03:39,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:03:39,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-13 14:03:39,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:39,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:03:39,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 14:03:39,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 14:03:39,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:39,734 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-13 14:03:39,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:03:39,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:39,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:39,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:39,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:03:39,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:03:39,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:03:39,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:39,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:03:39,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:03:39,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:03:39,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:39,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:03:39,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692774804] [2020-10-13 14:03:39,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:03:39,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:03:39,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226810448] [2020-10-13 14:03:39,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:03:39,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:03:39,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:03:39,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:03:39,860 INFO L87 Difference]: Start difference. First operand 3221 states and 4911 transitions. Second operand 4 states. [2020-10-13 14:03:49,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:03:49,443 INFO L93 Difference]: Finished difference Result 9584 states and 14605 transitions. [2020-10-13 14:03:49,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:03:49,444 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 306 [2020-10-13 14:03:49,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:03:49,472 INFO L225 Difference]: With dead ends: 9584 [2020-10-13 14:03:49,472 INFO L226 Difference]: Without dead ends: 6410 [2020-10-13 14:03:49,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:03:49,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6410 states. [2020-10-13 14:03:49,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6410 to 3235. [2020-10-13 14:03:49,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3235 states. [2020-10-13 14:03:49,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3235 states to 3235 states and 4927 transitions. [2020-10-13 14:03:49,693 INFO L78 Accepts]: Start accepts. Automaton has 3235 states and 4927 transitions. Word has length 306 [2020-10-13 14:03:49,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:03:49,694 INFO L479 AbstractCegarLoop]: Abstraction has 3235 states and 4927 transitions. [2020-10-13 14:03:49,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:03:49,694 INFO L276 IsEmpty]: Start isEmpty. Operand 3235 states and 4927 transitions. [2020-10-13 14:03:49,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-13 14:03:49,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:03:49,707 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:03:49,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:03:49,707 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:03:49,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:03:49,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1761380444, now seen corresponding path program 1 times [2020-10-13 14:03:49,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:03:49,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991319792] [2020-10-13 14:03:49,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:03:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:49,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:49,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:50,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:50,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:50,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:50,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:50,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:50,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:50,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:50,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:51,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:51,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:51,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:51,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:54,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:54,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-13 14:03:54,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:03:54,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 14:03:54,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:54,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:03:54,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:03:54,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-13 14:03:54,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:55,505 WARN L193 SmtUtils]: Spent 522.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-13 14:03:55,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:03:55,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:55,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:55,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:55,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:03:55,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:03:55,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 14:03:55,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:55,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:03:55,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:03:55,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:03:55,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:55,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:03:55,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991319792] [2020-10-13 14:03:55,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:03:55,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:03:55,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128887763] [2020-10-13 14:03:55,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:03:55,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:03:55,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:03:55,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:03:55,650 INFO L87 Difference]: Start difference. First operand 3235 states and 4927 transitions. Second operand 5 states. [2020-10-13 14:04:05,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:04:05,201 INFO L93 Difference]: Finished difference Result 9448 states and 14363 transitions. [2020-10-13 14:04:05,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:04:05,202 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 308 [2020-10-13 14:04:05,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:04:05,226 INFO L225 Difference]: With dead ends: 9448 [2020-10-13 14:04:05,226 INFO L226 Difference]: Without dead ends: 6337 [2020-10-13 14:04:05,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:04:05,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6337 states. [2020-10-13 14:04:05,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6337 to 6267. [2020-10-13 14:04:05,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6267 states. [2020-10-13 14:04:05,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6267 states to 6267 states and 9497 transitions. [2020-10-13 14:04:05,650 INFO L78 Accepts]: Start accepts. Automaton has 6267 states and 9497 transitions. Word has length 308 [2020-10-13 14:04:05,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:04:05,651 INFO L479 AbstractCegarLoop]: Abstraction has 6267 states and 9497 transitions. [2020-10-13 14:04:05,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:04:05,651 INFO L276 IsEmpty]: Start isEmpty. Operand 6267 states and 9497 transitions. [2020-10-13 14:04:05,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-13 14:04:05,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:04:05,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:04:05,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:04:05,667 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:04:05,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:04:05,667 INFO L82 PathProgramCache]: Analyzing trace with hash -867286421, now seen corresponding path program 1 times [2020-10-13 14:04:05,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:04:05,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776330746] [2020-10-13 14:04:05,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:04:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:05,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:06,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:06,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:06,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:06,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:06,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:06,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:06,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:07,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:07,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:07,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:07,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:07,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:07,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:09,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:09,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:10,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:10,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-13 14:04:10,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:04:10,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-13 14:04:10,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:10,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:04:10,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 14:04:10,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 14:04:10,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:11,436 WARN L193 SmtUtils]: Spent 512.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-13 14:04:11,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:04:11,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:11,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:11,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:11,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:04:11,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:04:11,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 14:04:11,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:11,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:04:11,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:04:11,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:04:11,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:11,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:04:11,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776330746] [2020-10-13 14:04:11,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:04:11,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:04:11,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426593813] [2020-10-13 14:04:11,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:04:11,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:04:11,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:04:11,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:04:11,544 INFO L87 Difference]: Start difference. First operand 6267 states and 9497 transitions. Second operand 5 states. [2020-10-13 14:04:18,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:04:18,821 INFO L93 Difference]: Finished difference Result 17421 states and 26252 transitions. [2020-10-13 14:04:18,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:04:18,823 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 308 [2020-10-13 14:04:18,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:04:18,859 INFO L225 Difference]: With dead ends: 17421 [2020-10-13 14:04:18,859 INFO L226 Difference]: Without dead ends: 11709 [2020-10-13 14:04:18,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:04:18,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11709 states. [2020-10-13 14:04:19,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11709 to 6727. [2020-10-13 14:04:19,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6727 states. [2020-10-13 14:04:19,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6727 states to 6727 states and 10285 transitions. [2020-10-13 14:04:19,269 INFO L78 Accepts]: Start accepts. Automaton has 6727 states and 10285 transitions. Word has length 308 [2020-10-13 14:04:19,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:04:19,270 INFO L479 AbstractCegarLoop]: Abstraction has 6727 states and 10285 transitions. [2020-10-13 14:04:19,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:04:19,270 INFO L276 IsEmpty]: Start isEmpty. Operand 6727 states and 10285 transitions. [2020-10-13 14:04:19,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-13 14:04:19,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:04:19,286 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:04:19,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:04:19,286 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:04:19,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:04:19,287 INFO L82 PathProgramCache]: Analyzing trace with hash 655683668, now seen corresponding path program 1 times [2020-10-13 14:04:19,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:04:19,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45283162] [2020-10-13 14:04:19,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:04:19,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:19,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:19,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:19,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:19,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:19,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:19,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:19,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:20,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:20,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:20,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:20,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:20,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:22,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:24,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:24,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-13 14:04:24,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:04:24,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 14:04:24,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:24,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:04:24,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-13 14:04:24,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 14:04:24,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:24,907 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-13 14:04:24,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:04:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:24,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:24,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:24,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:04:24,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:04:24,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:04:24,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:24,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:04:24,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:04:24,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:04:24,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:24,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:04:24,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45283162] [2020-10-13 14:04:24,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:04:24,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:04:24,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936866386] [2020-10-13 14:04:24,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:04:24,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:04:24,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:04:24,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:04:24,989 INFO L87 Difference]: Start difference. First operand 6727 states and 10285 transitions. Second operand 4 states. [2020-10-13 14:04:30,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:04:30,805 INFO L93 Difference]: Finished difference Result 18163 states and 27332 transitions. [2020-10-13 14:04:30,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:04:30,805 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 310 [2020-10-13 14:04:30,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:04:30,834 INFO L225 Difference]: With dead ends: 18163 [2020-10-13 14:04:30,835 INFO L226 Difference]: Without dead ends: 12441 [2020-10-13 14:04:30,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:04:30,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12441 states. [2020-10-13 14:04:31,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12441 to 6833. [2020-10-13 14:04:31,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6833 states. [2020-10-13 14:04:31,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6833 states to 6833 states and 10428 transitions. [2020-10-13 14:04:31,331 INFO L78 Accepts]: Start accepts. Automaton has 6833 states and 10428 transitions. Word has length 310 [2020-10-13 14:04:31,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:04:31,332 INFO L479 AbstractCegarLoop]: Abstraction has 6833 states and 10428 transitions. [2020-10-13 14:04:31,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:04:31,332 INFO L276 IsEmpty]: Start isEmpty. Operand 6833 states and 10428 transitions. [2020-10-13 14:04:31,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-13 14:04:31,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:04:31,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:04:31,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:04:31,346 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:04:31,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:04:31,346 INFO L82 PathProgramCache]: Analyzing trace with hash 998705551, now seen corresponding path program 1 times [2020-10-13 14:04:31,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:04:31,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646776825] [2020-10-13 14:04:31,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:04:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:31,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:31,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:31,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:31,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:31,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:32,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:32,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:32,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:32,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:32,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:32,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:32,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:34,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:36,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:36,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-13 14:04:36,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:04:36,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 14:04:36,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:36,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:04:36,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 14:04:36,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 14:04:36,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:37,134 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-13 14:04:37,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:04:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:37,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:37,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:37,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:04:37,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:04:37,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 14:04:37,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:37,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:04:37,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:04:37,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:04:37,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:04:37,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:04:37,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646776825] [2020-10-13 14:04:37,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:04:37,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:04:37,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232135803] [2020-10-13 14:04:37,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:04:37,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:04:37,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:04:37,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:04:37,346 INFO L87 Difference]: Start difference. First operand 6833 states and 10428 transitions. Second operand 5 states. [2020-10-13 14:04:45,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:04:45,328 INFO L93 Difference]: Finished difference Result 18315 states and 27694 transitions. [2020-10-13 14:04:45,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:04:45,329 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 310 [2020-10-13 14:04:45,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:04:45,353 INFO L225 Difference]: With dead ends: 18315 [2020-10-13 14:04:45,354 INFO L226 Difference]: Without dead ends: 12585 [2020-10-13 14:04:45,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:04:45,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12585 states. [2020-10-13 14:04:45,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12585 to 7631. [2020-10-13 14:04:45,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7631 states. [2020-10-13 14:04:45,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7631 states to 7631 states and 11785 transitions. [2020-10-13 14:04:45,935 INFO L78 Accepts]: Start accepts. Automaton has 7631 states and 11785 transitions. Word has length 310 [2020-10-13 14:04:45,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:04:45,935 INFO L479 AbstractCegarLoop]: Abstraction has 7631 states and 11785 transitions. [2020-10-13 14:04:45,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:04:45,935 INFO L276 IsEmpty]: Start isEmpty. Operand 7631 states and 11785 transitions. [2020-10-13 14:04:45,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-13 14:04:45,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:04:45,947 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:04:45,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:04:45,947 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:04:45,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:04:45,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1382214853, now seen corresponding path program 1 times [2020-10-13 14:04:45,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:04:45,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495453882] [2020-10-13 14:04:45,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:04:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:46,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:46,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:46,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:46,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:46,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:46,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:46,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:47,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:47,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:47,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:47,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:47,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:47,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:47,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:47,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:50,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:50,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-13 14:04:50,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:04:50,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 14:04:50,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:50,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:04:50,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 14:04:50,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 14:04:50,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:51,624 WARN L193 SmtUtils]: Spent 561.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-13 14:04:51,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:04:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:51,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:51,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:51,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:04:51,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:04:51,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:04:51,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:51,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:04:51,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:04:51,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:04:51,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:51,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:04:51,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495453882] [2020-10-13 14:04:51,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:04:51,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:04:51,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146384094] [2020-10-13 14:04:51,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:04:51,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:04:51,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:04:51,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:04:51,706 INFO L87 Difference]: Start difference. First operand 7631 states and 11785 transitions. Second operand 4 states. [2020-10-13 14:04:58,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:04:58,187 INFO L93 Difference]: Finished difference Result 19263 states and 29092 transitions. [2020-10-13 14:04:58,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:04:58,188 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 312 [2020-10-13 14:04:58,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:04:58,211 INFO L225 Difference]: With dead ends: 19263 [2020-10-13 14:04:58,211 INFO L226 Difference]: Without dead ends: 13499 [2020-10-13 14:04:58,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:04:58,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13499 states. [2020-10-13 14:04:58,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13499 to 7862. [2020-10-13 14:04:58,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7862 states. [2020-10-13 14:04:58,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7862 states to 7862 states and 12076 transitions. [2020-10-13 14:04:58,831 INFO L78 Accepts]: Start accepts. Automaton has 7862 states and 12076 transitions. Word has length 312 [2020-10-13 14:04:58,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:04:58,831 INFO L479 AbstractCegarLoop]: Abstraction has 7862 states and 12076 transitions. [2020-10-13 14:04:58,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:04:58,832 INFO L276 IsEmpty]: Start isEmpty. Operand 7862 states and 12076 transitions. [2020-10-13 14:04:58,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-13 14:04:58,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:04:58,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:04:58,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:04:58,841 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:04:58,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:04:58,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1039192970, now seen corresponding path program 1 times [2020-10-13 14:04:58,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:04:58,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231491762] [2020-10-13 14:04:58,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:04:58,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:58,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:58,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:59,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:59,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:59,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:59,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:59,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:59,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:59,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:59,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:59,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:59,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:59,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:59,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:59,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:00,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:03,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:03,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-13 14:05:03,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:05:03,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 14:05:03,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:03,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:05:03,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 14:05:03,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 14:05:03,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:05:04,563 WARN L193 SmtUtils]: Spent 522.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-13 14:05:04,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:05:04,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:04,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:04,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:04,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:05:04,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:05:04,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:05:04,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:04,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:05:04,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:05:04,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:05:04,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:05:04,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:05:04,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231491762] [2020-10-13 14:05:04,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:05:04,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:05:04,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129244107] [2020-10-13 14:05:04,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:05:04,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:05:04,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:05:04,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:05:04,654 INFO L87 Difference]: Start difference. First operand 7862 states and 12076 transitions. Second operand 5 states. [2020-10-13 14:05:13,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:05:13,849 INFO L93 Difference]: Finished difference Result 20526 states and 31260 transitions. [2020-10-13 14:05:13,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:05:13,850 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 312 [2020-10-13 14:05:13,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:05:13,869 INFO L225 Difference]: With dead ends: 20526 [2020-10-13 14:05:13,870 INFO L226 Difference]: Without dead ends: 14608 [2020-10-13 14:05:13,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:05:13,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14608 states. [2020-10-13 14:05:14,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14608 to 9627. [2020-10-13 14:05:14,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9627 states. [2020-10-13 14:05:14,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9627 states to 9627 states and 15012 transitions. [2020-10-13 14:05:14,890 INFO L78 Accepts]: Start accepts. Automaton has 9627 states and 15012 transitions. Word has length 312 [2020-10-13 14:05:14,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:05:14,890 INFO L479 AbstractCegarLoop]: Abstraction has 9627 states and 15012 transitions. [2020-10-13 14:05:14,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:05:14,890 INFO L276 IsEmpty]: Start isEmpty. Operand 9627 states and 15012 transitions. [2020-10-13 14:05:14,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-13 14:05:14,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:05:14,902 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:05:14,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:05:14,902 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:05:14,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:05:14,903 INFO L82 PathProgramCache]: Analyzing trace with hash 839984367, now seen corresponding path program 1 times [2020-10-13 14:05:14,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:05:14,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48360882] [2020-10-13 14:05:14,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:05:14,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:15,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:15,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:15,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:15,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:15,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:15,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:16,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:16,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:16,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:16,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:16,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:16,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:16,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:16,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:16,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:18,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:18,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:20,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:20,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-13 14:05:20,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:05:20,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-13 14:05:20,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:20,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:05:20,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 14:05:20,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 14:05:20,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:05:20,759 WARN L193 SmtUtils]: Spent 562.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-13 14:05:20,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:05:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:20,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:20,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:20,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:05:20,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:05:20,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:05:20,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:20,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:05:20,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:05:20,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:05:20,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:05:20,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:05:20,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48360882] [2020-10-13 14:05:20,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:05:20,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:05:20,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128090480] [2020-10-13 14:05:20,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:05:20,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:05:20,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:05:20,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:05:20,856 INFO L87 Difference]: Start difference. First operand 9627 states and 15012 transitions. Second operand 5 states. [2020-10-13 14:05:26,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:05:26,817 INFO L93 Difference]: Finished difference Result 14581 states and 22365 transitions. [2020-10-13 14:05:26,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:05:26,818 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 314 [2020-10-13 14:05:26,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:05:26,830 INFO L225 Difference]: With dead ends: 14581 [2020-10-13 14:05:26,831 INFO L226 Difference]: Without dead ends: 8489 [2020-10-13 14:05:26,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:05:26,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8489 states. [2020-10-13 14:05:27,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8489 to 8315. [2020-10-13 14:05:27,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8315 states. [2020-10-13 14:05:27,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8315 states to 8315 states and 12974 transitions. [2020-10-13 14:05:27,630 INFO L78 Accepts]: Start accepts. Automaton has 8315 states and 12974 transitions. Word has length 314 [2020-10-13 14:05:27,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:05:27,631 INFO L479 AbstractCegarLoop]: Abstraction has 8315 states and 12974 transitions. [2020-10-13 14:05:27,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:05:27,631 INFO L276 IsEmpty]: Start isEmpty. Operand 8315 states and 12974 transitions. [2020-10-13 14:05:27,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-13 14:05:27,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:05:27,642 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:05:27,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:05:27,642 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:05:27,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:05:27,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1183614404, now seen corresponding path program 1 times [2020-10-13 14:05:27,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:05:27,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409271045] [2020-10-13 14:05:27,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:05:27,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:27,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:27,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:27,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:28,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:28,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:28,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:28,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:28,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:28,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:28,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:28,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:28,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:29,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:32,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:32,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-13 14:05:32,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:05:32,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 14:05:32,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:32,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:05:32,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 14:05:32,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-13 14:05:32,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:05:33,311 WARN L193 SmtUtils]: Spent 521.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-13 14:05:33,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:05:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:33,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:33,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:33,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:05:33,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:05:33,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:05:33,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:33,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:05:33,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:05:33,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:05:33,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:05:33,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:05:33,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409271045] [2020-10-13 14:05:33,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:05:33,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:05:33,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120721793] [2020-10-13 14:05:33,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:05:33,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:05:33,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:05:33,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:05:33,422 INFO L87 Difference]: Start difference. First operand 8315 states and 12974 transitions. Second operand 4 states. [2020-10-13 14:05:44,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:05:44,687 INFO L93 Difference]: Finished difference Result 20467 states and 31312 transitions. [2020-10-13 14:05:44,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:05:44,687 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 318 [2020-10-13 14:05:44,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:05:44,703 INFO L225 Difference]: With dead ends: 20467 [2020-10-13 14:05:44,703 INFO L226 Difference]: Without dead ends: 14907 [2020-10-13 14:05:44,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:05:44,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14907 states. [2020-10-13 14:05:45,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14907 to 14563. [2020-10-13 14:05:45,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14563 states. [2020-10-13 14:05:45,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14563 states to 14563 states and 22387 transitions. [2020-10-13 14:05:45,580 INFO L78 Accepts]: Start accepts. Automaton has 14563 states and 22387 transitions. Word has length 318 [2020-10-13 14:05:45,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:05:45,580 INFO L479 AbstractCegarLoop]: Abstraction has 14563 states and 22387 transitions. [2020-10-13 14:05:45,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:05:45,580 INFO L276 IsEmpty]: Start isEmpty. Operand 14563 states and 22387 transitions. [2020-10-13 14:05:45,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-13 14:05:45,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:05:45,597 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:05:45,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:05:45,598 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:05:45,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:05:45,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1383446125, now seen corresponding path program 1 times [2020-10-13 14:05:45,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:05:45,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002367402] [2020-10-13 14:05:45,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:05:45,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:45,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:45,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:45,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:45,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:45,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:45,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:46,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:46,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:46,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:46,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:46,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:46,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:46,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:46,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:49,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:49,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:50,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:50,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:50,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:50,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-13 14:05:50,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:05:50,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5084 [2020-10-13 14:05:50,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:50,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:05:50,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 14:05:50,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 14:05:50,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:05:51,304 WARN L193 SmtUtils]: Spent 509.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-13 14:05:51,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:05:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:51,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:51,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:51,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:05:51,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:05:51,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:05:51,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:51,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:05:51,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:05:51,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:05:51,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:05:51,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:05:51,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002367402] [2020-10-13 14:05:51,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:05:51,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:05:51,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277664886] [2020-10-13 14:05:51,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:05:51,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:05:51,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:05:51,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:05:51,390 INFO L87 Difference]: Start difference. First operand 14563 states and 22387 transitions. Second operand 4 states. [2020-10-13 14:05:59,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:05:59,102 INFO L93 Difference]: Finished difference Result 30182 states and 45603 transitions. [2020-10-13 14:05:59,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:05:59,103 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 319 [2020-10-13 14:05:59,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:05:59,131 INFO L225 Difference]: With dead ends: 30182 [2020-10-13 14:05:59,131 INFO L226 Difference]: Without dead ends: 22698 [2020-10-13 14:05:59,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:05:59,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22698 states. [2020-10-13 14:06:01,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22698 to 22540. [2020-10-13 14:06:01,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22540 states. [2020-10-13 14:06:01,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22540 states to 22540 states and 34138 transitions. [2020-10-13 14:06:01,305 INFO L78 Accepts]: Start accepts. Automaton has 22540 states and 34138 transitions. Word has length 319 [2020-10-13 14:06:01,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:06:01,305 INFO L479 AbstractCegarLoop]: Abstraction has 22540 states and 34138 transitions. [2020-10-13 14:06:01,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:06:01,305 INFO L276 IsEmpty]: Start isEmpty. Operand 22540 states and 34138 transitions. [2020-10-13 14:06:01,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-13 14:06:01,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:06:01,323 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:06:01,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 14:06:01,323 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:06:01,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:06:01,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1060539112, now seen corresponding path program 1 times [2020-10-13 14:06:01,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:06:01,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522809570] [2020-10-13 14:06:01,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:06:01,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:06:01,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:01,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:01,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:01,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:01,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:01,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:01,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:01,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:01,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:01,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:01,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:02,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:02,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:02,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:05,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:06,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:06,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:06,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:06,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:06:06,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-13 14:06:06,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:06:06,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 14:06:06,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:06:06,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:06:06,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 14:06:06,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 14:06:06,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:06:06,939 WARN L193 SmtUtils]: Spent 495.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-13 14:06:06,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:06:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:06:06,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:06,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:06:06,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:06:06,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:06:06,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:06:06,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:06:06,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:06:06,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:06:06,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:06:06,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:06:07,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:06:07,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522809570] [2020-10-13 14:06:07,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:06:07,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:06:07,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252697887] [2020-10-13 14:06:07,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:06:07,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:06:07,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:06:07,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:06:07,071 INFO L87 Difference]: Start difference. First operand 22540 states and 34138 transitions. Second operand 4 states.