/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 11:34:09,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 11:34:09,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 11:34:09,476 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 11:34:09,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 11:34:09,484 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 11:34:09,486 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 11:34:09,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 11:34:09,493 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 11:34:09,496 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 11:34:09,497 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 11:34:09,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 11:34:09,499 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 11:34:09,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 11:34:09,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 11:34:09,506 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 11:34:09,508 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 11:34:09,509 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 11:34:09,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 11:34:09,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 11:34:09,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 11:34:09,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 11:34:09,523 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 11:34:09,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 11:34:09,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 11:34:09,537 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 11:34:09,537 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 11:34:09,543 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 11:34:09,544 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 11:34:09,545 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 11:34:09,545 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 11:34:09,546 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 11:34:09,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 11:34:09,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 11:34:09,555 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 11:34:09,555 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 11:34:09,556 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 11:34:09,556 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 11:34:09,556 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 11:34:09,557 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 11:34:09,558 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 11:34:09,558 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 11:34:09,580 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 11:34:09,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 11:34:09,581 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 11:34:09,582 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 11:34:09,582 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 11:34:09,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 11:34:09,582 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 11:34:09,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 11:34:09,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 11:34:09,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 11:34:09,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 11:34:09,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 11:34:09,583 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 11:34:09,584 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 11:34:09,584 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 11:34:09,584 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 11:34:09,584 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 11:34:09,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 11:34:09,585 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 11:34:09,585 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 11:34:09,585 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 11:34:09,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:34:09,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 11:34:09,586 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 11:34:09,586 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 11:34:09,586 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 11:34:09,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 11:34:09,586 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 11:34:09,586 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 11:34:09,587 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 11:34:09,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 11:34:09,925 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 11:34:09,930 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 11:34:09,931 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 11:34:09,932 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 11:34:09,933 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label15.c [2020-10-12 11:34:09,996 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/709dc1dfa/6dadbe2be0ad4a0ba09a8fade419e136/FLAGc64023855 [2020-10-12 11:34:10,755 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 11:34:10,756 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label15.c [2020-10-12 11:34:10,787 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/709dc1dfa/6dadbe2be0ad4a0ba09a8fade419e136/FLAGc64023855 [2020-10-12 11:34:10,845 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/709dc1dfa/6dadbe2be0ad4a0ba09a8fade419e136 [2020-10-12 11:34:10,856 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 11:34:10,858 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 11:34:10,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 11:34:10,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 11:34:10,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 11:34:10,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:34:10" (1/1) ... [2020-10-12 11:34:10,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d5d5e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:34:10, skipping insertion in model container [2020-10-12 11:34:10,871 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:34:10" (1/1) ... [2020-10-12 11:34:10,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 11:34:11,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 11:34:12,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:34:12,877 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 11:34:13,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:34:13,632 INFO L208 MainTranslator]: Completed translation [2020-10-12 11:34:13,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:34:13 WrapperNode [2020-10-12 11:34:13,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 11:34:13,634 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 11:34:13,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 11:34:13,634 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 11:34:13,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:34:13" (1/1) ... [2020-10-12 11:34:13,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:34:13" (1/1) ... [2020-10-12 11:34:13,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:34:13" (1/1) ... [2020-10-12 11:34:13,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:34:13" (1/1) ... [2020-10-12 11:34:13,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:34:13" (1/1) ... [2020-10-12 11:34:13,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:34:13" (1/1) ... [2020-10-12 11:34:13,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:34:13" (1/1) ... [2020-10-12 11:34:13,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 11:34:13,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 11:34:13,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 11:34:13,944 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 11:34:13,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:34:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:34:14,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 11:34:14,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 11:34:14,030 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 11:34:14,030 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 11:34:14,030 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 11:34:14,031 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 11:34:14,031 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 11:34:14,032 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 11:34:14,032 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 11:34:14,033 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 11:34:14,033 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 11:34:14,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 11:34:14,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 11:34:14,033 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 11:34:14,034 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 11:34:14,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 11:34:14,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 11:34:18,716 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 11:34:18,716 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 11:34:18,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:34:18 BoogieIcfgContainer [2020-10-12 11:34:18,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 11:34:18,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 11:34:18,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 11:34:18,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 11:34:18,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:34:10" (1/3) ... [2020-10-12 11:34:18,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c09b898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:34:18, skipping insertion in model container [2020-10-12 11:34:18,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:34:13" (2/3) ... [2020-10-12 11:34:18,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c09b898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:34:18, skipping insertion in model container [2020-10-12 11:34:18,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:34:18" (3/3) ... [2020-10-12 11:34:18,737 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label15.c [2020-10-12 11:34:18,747 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 11:34:18,755 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 11:34:18,769 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 11:34:18,796 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 11:34:18,796 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 11:34:18,796 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 11:34:18,797 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 11:34:18,797 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 11:34:18,797 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 11:34:18,797 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 11:34:18,797 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 11:34:18,840 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-12 11:34:18,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2020-10-12 11:34:18,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:34:18,902 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:34:18,903 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:34:18,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:34:18,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1531288282, now seen corresponding path program 1 times [2020-10-12 11:34:18,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:34:18,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421322178] [2020-10-12 11:34:18,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:34:19,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:34:19,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:34:23,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:34:24,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:34:24,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 805 [2020-10-12 11:34:24,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:34:24,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-12 11:34:24,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:34:24,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 11:34:24,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:34:24,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 742 [2020-10-12 11:34:24,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 11:34:26,901 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2020-10-12 11:34:27,015 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2020-10-12 11:34:27,180 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 38 [2020-10-12 11:34:27,360 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 47 [2020-10-12 11:34:27,564 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 43 [2020-10-12 11:34:27,757 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 35 [2020-10-12 11:34:28,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:34:28,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:34:28,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:34:28,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:34:28,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:34:28,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:34:28,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 11:34:28,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:34:28,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:34:28,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:34:28,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:34:28,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:34:32,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:34:32,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421322178] [2020-10-12 11:34:32,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 11:34:32,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-12 11:34:32,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009162760] [2020-10-12 11:34:32,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 11:34:32,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:34:32,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 11:34:32,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-10-12 11:34:32,381 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 18 states. [2020-10-12 11:34:32,997 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-12 11:34:33,293 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-12 11:34:33,548 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-12 11:34:46,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:34:46,904 INFO L93 Difference]: Finished difference Result 2548 states and 4905 transitions. [2020-10-12 11:34:46,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 11:34:46,907 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 791 [2020-10-12 11:34:46,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:34:46,952 INFO L225 Difference]: With dead ends: 2548 [2020-10-12 11:34:46,952 INFO L226 Difference]: Without dead ends: 1580 [2020-10-12 11:34:46,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 11:34:47,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2020-10-12 11:34:47,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1580. [2020-10-12 11:34:47,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-10-12 11:34:47,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2339 transitions. [2020-10-12 11:34:47,171 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2339 transitions. Word has length 791 [2020-10-12 11:34:47,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:34:47,174 INFO L479 AbstractCegarLoop]: Abstraction has 1580 states and 2339 transitions. [2020-10-12 11:34:47,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 11:34:47,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2339 transitions. [2020-10-12 11:34:47,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 811 [2020-10-12 11:34:47,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:34:47,232 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:34:47,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 11:34:47,232 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:34:47,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:34:47,234 INFO L82 PathProgramCache]: Analyzing trace with hash 675241897, now seen corresponding path program 1 times [2020-10-12 11:34:47,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:34:47,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481305256] [2020-10-12 11:34:47,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:34:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:34:47,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:34:48,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:34:51,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:34:52,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:34:52,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 826 [2020-10-12 11:34:52,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:34:52,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5105 [2020-10-12 11:34:52,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:34:52,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 11:34:52,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-12 11:34:52,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 705 [2020-10-12 11:34:52,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:34:56,469 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 32 [2020-10-12 11:34:56,622 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 38 [2020-10-12 11:34:56,757 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 37 [2020-10-12 11:34:56,885 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 36 [2020-10-12 11:34:57,028 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-10-12 11:34:57,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:34:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:34:57,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:34:57,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:34:57,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:34:57,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:34:57,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:34:57,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:34:57,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:34:57,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:34:57,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:34:57,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:34:57,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:34:57,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:34:57,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:34:57,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:34:57,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:34:57,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:34:57,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 11:34:57,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:34:57,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:34:57,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:34:57,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 11:34:57,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:35:01,784 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:35:01,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481305256] [2020-10-12 11:35:01,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:35:01,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 11:35:01,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295255977] [2020-10-12 11:35:01,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 11:35:01,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:35:01,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 11:35:01,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-12 11:35:01,797 INFO L87 Difference]: Start difference. First operand 1580 states and 2339 transitions. Second operand 19 states. [2020-10-12 11:35:02,448 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-12 11:35:04,626 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-12 11:35:06,689 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 91 [2020-10-12 11:35:07,337 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 88 [2020-10-12 11:35:08,249 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 85 [2020-10-12 11:35:16,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:35:16,814 INFO L93 Difference]: Finished difference Result 3123 states and 5328 transitions. [2020-10-12 11:35:16,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 11:35:16,817 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 810 [2020-10-12 11:35:16,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:35:16,830 INFO L225 Difference]: With dead ends: 3123 [2020-10-12 11:35:16,831 INFO L226 Difference]: Without dead ends: 2276 [2020-10-12 11:35:16,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2020-10-12 11:35:16,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2276 states. [2020-10-12 11:35:16,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2276 to 2276. [2020-10-12 11:35:16,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2276 states. [2020-10-12 11:35:16,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2276 states to 2276 states and 3045 transitions. [2020-10-12 11:35:16,892 INFO L78 Accepts]: Start accepts. Automaton has 2276 states and 3045 transitions. Word has length 810 [2020-10-12 11:35:16,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:35:16,894 INFO L479 AbstractCegarLoop]: Abstraction has 2276 states and 3045 transitions. [2020-10-12 11:35:16,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 11:35:16,894 INFO L276 IsEmpty]: Start isEmpty. Operand 2276 states and 3045 transitions. [2020-10-12 11:35:16,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 818 [2020-10-12 11:35:16,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:35:16,906 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:35:16,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 11:35:16,907 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:35:16,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:35:16,907 INFO L82 PathProgramCache]: Analyzing trace with hash -918026993, now seen corresponding path program 1 times [2020-10-12 11:35:16,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:35:16,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734491119] [2020-10-12 11:35:16,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:35:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:35:17,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:17,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:17,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:22,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:35:22,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 833 [2020-10-12 11:35:22,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:35:22,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-12 11:35:22,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:35:22,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 11:35:22,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 11:35:22,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 517 [2020-10-12 11:35:22,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:35:23,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:35:23,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:35:23,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:23,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:35:23,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:35:23,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:35:23,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:35:23,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:35:23,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:35:23,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:35:23,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:35:23,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:35:23,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:35:23,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:35:23,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:23,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:35:23,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 11:35:23,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:35:23,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 11:35:23,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:35:23,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:35:23,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:35:23,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 11:35:23,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:35:26,808 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:35:26,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734491119] [2020-10-12 11:35:26,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:35:26,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 11:35:26,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059575267] [2020-10-12 11:35:26,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 11:35:26,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:35:26,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 11:35:26,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-10-12 11:35:26,811 INFO L87 Difference]: Start difference. First operand 2276 states and 3045 transitions. Second operand 17 states. [2020-10-12 11:35:31,655 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 96 [2020-10-12 11:35:32,506 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-12 11:35:32,726 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 92 [2020-10-12 11:35:32,987 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2020-10-12 11:35:33,394 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2020-10-12 11:35:34,585 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-10-12 11:35:38,216 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-10-12 11:35:38,621 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-12 11:35:38,821 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-10-12 11:35:43,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:35:43,990 INFO L93 Difference]: Finished difference Result 4329 states and 6367 transitions. [2020-10-12 11:35:43,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 11:35:43,991 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 817 [2020-10-12 11:35:43,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:35:44,004 INFO L225 Difference]: With dead ends: 4329 [2020-10-12 11:35:44,005 INFO L226 Difference]: Without dead ends: 2786 [2020-10-12 11:35:44,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2020-10-12 11:35:44,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2020-10-12 11:35:44,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2786. [2020-10-12 11:35:44,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2786 states. [2020-10-12 11:35:44,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2786 states to 2786 states and 3564 transitions. [2020-10-12 11:35:44,102 INFO L78 Accepts]: Start accepts. Automaton has 2786 states and 3564 transitions. Word has length 817 [2020-10-12 11:35:44,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:35:44,103 INFO L479 AbstractCegarLoop]: Abstraction has 2786 states and 3564 transitions. [2020-10-12 11:35:44,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 11:35:44,103 INFO L276 IsEmpty]: Start isEmpty. Operand 2786 states and 3564 transitions. [2020-10-12 11:35:44,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 828 [2020-10-12 11:35:44,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:35:44,119 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:35:44,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 11:35:44,119 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:35:44,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:35:44,120 INFO L82 PathProgramCache]: Analyzing trace with hash 209807734, now seen corresponding path program 1 times [2020-10-12 11:35:44,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:35:44,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508597015] [2020-10-12 11:35:44,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:35:44,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:35:44,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:45,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:48,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:35:48,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 845 [2020-10-12 11:35:48,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:35:48,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3773 [2020-10-12 11:35:48,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:35:48,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 11:35:48,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 11:35:48,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 786 [2020-10-12 11:35:48,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:35:48,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:35:48,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:35:48,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:48,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:35:48,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:35:48,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:35:48,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:35:48,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:35:48,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:35:48,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:35:48,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:35:48,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:35:48,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:35:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:35:48,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:48,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:35:48,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:35:48,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:35:48,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 11:35:48,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:35:48,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:35:48,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:35:48,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:35:48,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 11:35:48,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:35:48,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:35:48,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:48,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:35:48,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:35:48,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:35:48,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 11:35:48,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:35:48,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:35:48,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:35:48,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:35:48,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:35:52,015 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-12 11:35:52,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508597015] [2020-10-12 11:35:52,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:35:52,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:35:52,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62838861] [2020-10-12 11:35:52,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 11:35:52,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:35:52,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 11:35:52,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:35:52,018 INFO L87 Difference]: Start difference. First operand 2786 states and 3564 transitions. Second operand 5 states. [2020-10-12 11:36:00,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:36:00,598 INFO L93 Difference]: Finished difference Result 5625 states and 7934 transitions. [2020-10-12 11:36:00,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:36:00,599 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 827 [2020-10-12 11:36:00,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:36:00,611 INFO L225 Difference]: With dead ends: 5625 [2020-10-12 11:36:00,612 INFO L226 Difference]: Without dead ends: 2715 [2020-10-12 11:36:00,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:36:00,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2715 states. [2020-10-12 11:36:00,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2715 to 2715. [2020-10-12 11:36:00,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2715 states. [2020-10-12 11:36:00,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2715 states to 2715 states and 2983 transitions. [2020-10-12 11:36:00,681 INFO L78 Accepts]: Start accepts. Automaton has 2715 states and 2983 transitions. Word has length 827 [2020-10-12 11:36:00,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:36:00,682 INFO L479 AbstractCegarLoop]: Abstraction has 2715 states and 2983 transitions. [2020-10-12 11:36:00,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 11:36:00,682 INFO L276 IsEmpty]: Start isEmpty. Operand 2715 states and 2983 transitions. [2020-10-12 11:36:00,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 936 [2020-10-12 11:36:00,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:36:00,697 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:36:00,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 11:36:00,697 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:36:00,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:36:00,698 INFO L82 PathProgramCache]: Analyzing trace with hash 772767822, now seen corresponding path program 1 times [2020-10-12 11:36:00,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:36:00,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997759173] [2020-10-12 11:36:00,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:36:00,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:00,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:01,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:02,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:05,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:05,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 953 [2020-10-12 11:36:05,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:36:05,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-10-12 11:36:05,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:05,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 11:36:05,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:36:05,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 947 [2020-10-12 11:36:05,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:06,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:36:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:06,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:06,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:06,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:36:06,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:06,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 11:36:06,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:06,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:36:06,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:36:06,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:36:06,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:36:06,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:36:06,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:06,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:06,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:06,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:06,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:36:06,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:36:06,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-12 11:36:06,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:06,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:36:06,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:36:06,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 11:36:06,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:06,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:36:06,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:06,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:06,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:06,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:06,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 11:36:06,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:36:06,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-12 11:36:06,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:06,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:36:06,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:36:06,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-12 11:36:06,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:07,829 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 118 proven. 28 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 11:36:07,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997759173] [2020-10-12 11:36:07,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:36:07,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:36:07,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798893377] [2020-10-12 11:36:07,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:36:07,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:36:07,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:36:07,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:36:07,835 INFO L87 Difference]: Start difference. First operand 2715 states and 2983 transitions. Second operand 8 states. [2020-10-12 11:36:14,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:36:14,533 INFO L93 Difference]: Finished difference Result 5576 states and 6388 transitions. [2020-10-12 11:36:14,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 11:36:14,533 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 935 [2020-10-12 11:36:14,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:36:14,552 INFO L225 Difference]: With dead ends: 5576 [2020-10-12 11:36:14,552 INFO L226 Difference]: Without dead ends: 3594 [2020-10-12 11:36:14,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2020-10-12 11:36:14,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3594 states. [2020-10-12 11:36:14,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3594 to 3562. [2020-10-12 11:36:14,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3562 states. [2020-10-12 11:36:14,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 4054 transitions. [2020-10-12 11:36:14,644 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 4054 transitions. Word has length 935 [2020-10-12 11:36:14,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:36:14,646 INFO L479 AbstractCegarLoop]: Abstraction has 3562 states and 4054 transitions. [2020-10-12 11:36:14,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:36:14,646 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 4054 transitions. [2020-10-12 11:36:14,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 951 [2020-10-12 11:36:14,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:36:14,664 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:36:14,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 11:36:14,665 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:36:14,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:36:14,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1927638739, now seen corresponding path program 1 times [2020-10-12 11:36:14,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:36:14,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644868592] [2020-10-12 11:36:14,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:36:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:14,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:14,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:15,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:17,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:19,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:19,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 970 [2020-10-12 11:36:19,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:36:19,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 11:36:19,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:19,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 11:36:19,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:36:19,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-12 11:36:19,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:19,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:36:19,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:19,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:19,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:19,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:36:19,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:19,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:36:19,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:19,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:36:19,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:36:19,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:36:19,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:19,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:36:19,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:19,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:19,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:19,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:19,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:36:19,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:36:19,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 11:36:19,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:19,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:36:19,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:36:19,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 11:36:19,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:20,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:36:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:20,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:20,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:20,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:20,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 11:36:20,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:36:20,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-12 11:36:20,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:20,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:36:20,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:36:20,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-12 11:36:20,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:20,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-12 11:36:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:20,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:20,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:20,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 11:36:20,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:20,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 11:36:20,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:20,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:36:20,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:36:20,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:36:20,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:21,024 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 168 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-12 11:36:21,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644868592] [2020-10-12 11:36:21,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:36:21,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:36:21,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812868178] [2020-10-12 11:36:21,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:36:21,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:36:21,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:36:21,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:36:21,028 INFO L87 Difference]: Start difference. First operand 3562 states and 4054 transitions. Second operand 8 states. [2020-10-12 11:36:27,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:36:27,558 INFO L93 Difference]: Finished difference Result 8161 states and 9685 transitions. [2020-10-12 11:36:27,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 11:36:27,559 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 950 [2020-10-12 11:36:27,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:36:27,583 INFO L225 Difference]: With dead ends: 8161 [2020-10-12 11:36:27,583 INFO L226 Difference]: Without dead ends: 5332 [2020-10-12 11:36:27,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:36:27,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5332 states. [2020-10-12 11:36:27,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5332 to 5271. [2020-10-12 11:36:27,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5271 states. [2020-10-12 11:36:27,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5271 states to 5271 states and 5971 transitions. [2020-10-12 11:36:27,719 INFO L78 Accepts]: Start accepts. Automaton has 5271 states and 5971 transitions. Word has length 950 [2020-10-12 11:36:27,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:36:27,719 INFO L479 AbstractCegarLoop]: Abstraction has 5271 states and 5971 transitions. [2020-10-12 11:36:27,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:36:27,720 INFO L276 IsEmpty]: Start isEmpty. Operand 5271 states and 5971 transitions. [2020-10-12 11:36:27,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 986 [2020-10-12 11:36:27,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:36:27,742 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:36:27,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 11:36:27,743 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:36:27,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:36:27,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1191390387, now seen corresponding path program 1 times [2020-10-12 11:36:27,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:36:27,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187329416] [2020-10-12 11:36:27,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:36:27,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:27,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:28,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:30,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:30,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:32,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:32,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1005 [2020-10-12 11:36:32,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:36:32,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-12 11:36:32,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:32,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 11:36:32,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 208 [2020-10-12 11:36:32,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 555 [2020-10-12 11:36:32,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:33,798 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2020-10-12 11:36:33,910 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2020-10-12 11:36:34,148 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-10-12 11:36:34,523 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-10-12 11:36:35,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:36:35,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:35,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:35,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:35,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:36:35,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:35,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:36:35,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:35,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:36:35,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:36:35,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:36:35,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:35,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:36:35,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:35,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:35,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:35,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:36:35,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:35,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:36:35,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:35,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:36:35,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:36:35,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:36:35,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:35,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:36:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:35,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:35,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:35,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 11:36:35,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:35,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 11:36:35,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:35,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:36:35,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:36:35,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:36:35,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:35,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-12 11:36:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:35,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:35,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:35,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-12 11:36:35,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:35,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 11:36:35,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:35,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:36:35,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:36:35,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 11:36:35,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:40,881 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 188 proven. 3 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-12 11:36:40,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187329416] [2020-10-12 11:36:40,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:36:40,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 11:36:40,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872722693] [2020-10-12 11:36:40,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 11:36:40,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:36:40,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 11:36:40,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-10-12 11:36:40,884 INFO L87 Difference]: Start difference. First operand 5271 states and 5971 transitions. Second operand 17 states. [2020-10-12 11:36:42,855 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-12 11:36:43,030 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-12 11:36:43,974 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-12 11:36:44,664 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-12 11:36:48,431 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-12 11:36:50,784 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 104 [2020-10-12 11:36:53,914 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-10-12 11:36:54,185 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-10-12 11:36:55,319 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2020-10-12 11:36:56,162 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2020-10-12 11:36:58,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:36:58,543 INFO L93 Difference]: Finished difference Result 10385 states and 11997 transitions. [2020-10-12 11:36:58,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 11:36:58,544 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 985 [2020-10-12 11:36:58,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:36:58,564 INFO L225 Difference]: With dead ends: 10385 [2020-10-12 11:36:58,565 INFO L226 Difference]: Without dead ends: 5618 [2020-10-12 11:36:58,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2020-10-12 11:36:58,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5618 states. [2020-10-12 11:36:58,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5618 to 5601. [2020-10-12 11:36:58,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5601 states. [2020-10-12 11:36:58,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5601 states to 5601 states and 6306 transitions. [2020-10-12 11:36:58,687 INFO L78 Accepts]: Start accepts. Automaton has 5601 states and 6306 transitions. Word has length 985 [2020-10-12 11:36:58,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:36:58,688 INFO L479 AbstractCegarLoop]: Abstraction has 5601 states and 6306 transitions. [2020-10-12 11:36:58,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 11:36:58,688 INFO L276 IsEmpty]: Start isEmpty. Operand 5601 states and 6306 transitions. [2020-10-12 11:36:58,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1004 [2020-10-12 11:36:58,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:36:58,710 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:36:58,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 11:36:58,711 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:36:58,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:36:58,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1904745751, now seen corresponding path program 1 times [2020-10-12 11:36:58,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:36:58,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109307335] [2020-10-12 11:36:58,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:36:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:58,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:59,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:00,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:02,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:03,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:03,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1023 [2020-10-12 11:37:03,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:37:03,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-12 11:37:03,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:03,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 11:37:03,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 226 [2020-10-12 11:37:03,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 796 [2020-10-12 11:37:03,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:04,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:37:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:04,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:04,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:04,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:37:04,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:04,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:37:04,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:04,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:37:04,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:37:04,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:37:04,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:04,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:37:04,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:04,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:04,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:04,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:37:04,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:04,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:37:04,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:04,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:37:04,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:37:04,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:37:04,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:04,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:37:04,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:04,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:04,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:04,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 11:37:04,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:04,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 11:37:04,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:04,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:37:04,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:37:04,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:37:04,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:04,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-12 11:37:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:04,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:04,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:04,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-12 11:37:04,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:04,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 11:37:04,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:04,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:37:04,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:37:04,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-12 11:37:04,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:05,163 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 206 proven. 3 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-12 11:37:05,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109307335] [2020-10-12 11:37:05,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:37:05,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:37:05,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39516853] [2020-10-12 11:37:05,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:37:05,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:37:05,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:37:05,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:37:05,166 INFO L87 Difference]: Start difference. First operand 5601 states and 6306 transitions. Second operand 6 states. [2020-10-12 11:37:13,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:37:13,767 INFO L93 Difference]: Finished difference Result 17294 states and 20593 transitions. [2020-10-12 11:37:13,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 11:37:13,773 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1003 [2020-10-12 11:37:13,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:37:13,815 INFO L225 Difference]: With dead ends: 17294 [2020-10-12 11:37:13,816 INFO L226 Difference]: Without dead ends: 12426 [2020-10-12 11:37:13,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:37:13,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12426 states. [2020-10-12 11:37:14,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12426 to 10744. [2020-10-12 11:37:14,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10744 states. [2020-10-12 11:37:14,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10744 states to 10744 states and 12488 transitions. [2020-10-12 11:37:14,052 INFO L78 Accepts]: Start accepts. Automaton has 10744 states and 12488 transitions. Word has length 1003 [2020-10-12 11:37:14,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:37:14,054 INFO L479 AbstractCegarLoop]: Abstraction has 10744 states and 12488 transitions. [2020-10-12 11:37:14,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 11:37:14,054 INFO L276 IsEmpty]: Start isEmpty. Operand 10744 states and 12488 transitions. [2020-10-12 11:37:14,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1025 [2020-10-12 11:37:14,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:37:14,096 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:37:14,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 11:37:14,096 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:37:14,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:37:14,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1995595472, now seen corresponding path program 1 times [2020-10-12 11:37:14,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:37:14,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291067497] [2020-10-12 11:37:14,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:37:14,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:14,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:14,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:14,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:14,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:15,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:19,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:19,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1046 [2020-10-12 11:37:19,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:37:19,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 11:37:19,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:19,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 11:37:19,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:37:19,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 222 [2020-10-12 11:37:19,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:19,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:37:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:19,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:19,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:19,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:37:19,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:19,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:37:19,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:19,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:37:19,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:37:19,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:37:19,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:19,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:37:19,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:19,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:19,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:19,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:19,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:37:19,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:37:19,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 11:37:19,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:19,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:37:19,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:37:19,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 11:37:19,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:19,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:37:19,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:19,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:19,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:19,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:19,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 11:37:19,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:37:19,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-12 11:37:19,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:19,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:37:19,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:37:19,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-12 11:37:19,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:19,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-12 11:37:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:19,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:19,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:19,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-12 11:37:19,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:19,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-12 11:37:19,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:19,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:37:19,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:37:19,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 11:37:19,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:19,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-12 11:37:19,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:19,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:19,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:19,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:37:19,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:19,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:37:19,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:19,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:37:19,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 11:37:19,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:37:19,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:20,335 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 231 proven. 50 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-12 11:37:20,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1291067497] [2020-10-12 11:37:20,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:37:20,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:37:20,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814351207] [2020-10-12 11:37:20,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:37:20,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:37:20,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:37:20,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:37:20,338 INFO L87 Difference]: Start difference. First operand 10744 states and 12488 transitions. Second operand 7 states. [2020-10-12 11:37:27,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:37:27,550 INFO L93 Difference]: Finished difference Result 25985 states and 31016 transitions. [2020-10-12 11:37:27,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 11:37:27,551 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1024 [2020-10-12 11:37:27,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:37:27,611 INFO L225 Difference]: With dead ends: 25985 [2020-10-12 11:37:27,611 INFO L226 Difference]: Without dead ends: 15974 [2020-10-12 11:37:27,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:37:27,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15974 states. [2020-10-12 11:37:27,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15974 to 15927. [2020-10-12 11:37:27,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15927 states. [2020-10-12 11:37:27,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15927 states to 15927 states and 17933 transitions. [2020-10-12 11:37:27,986 INFO L78 Accepts]: Start accepts. Automaton has 15927 states and 17933 transitions. Word has length 1024 [2020-10-12 11:37:27,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:37:27,987 INFO L479 AbstractCegarLoop]: Abstraction has 15927 states and 17933 transitions. [2020-10-12 11:37:27,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:37:27,987 INFO L276 IsEmpty]: Start isEmpty. Operand 15927 states and 17933 transitions. [2020-10-12 11:37:28,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1080 [2020-10-12 11:37:28,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:37:28,041 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:37:28,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 11:37:28,041 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:37:28,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:37:28,042 INFO L82 PathProgramCache]: Analyzing trace with hash 79603505, now seen corresponding path program 1 times [2020-10-12 11:37:28,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:37:28,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750573302] [2020-10-12 11:37:28,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:37:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:28,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:28,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:28,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:29,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:33,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:33,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1103 [2020-10-12 11:37:33,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:37:33,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-12 11:37:33,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:33,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:37:33,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 206 [2020-10-12 11:37:33,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 11:37:33,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:33,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:37:33,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:33,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:33,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:33,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:37:33,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:33,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:37:33,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:33,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:37:33,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:37:33,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:37:33,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:33,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:37:33,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:33,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:33,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:33,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:37:33,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:33,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 11:37:33,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:33,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:37:33,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:37:33,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:37:33,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:33,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:37:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:33,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:33,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:33,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 11:37:33,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:33,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 11:37:33,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:33,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:37:33,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:37:33,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:37:33,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:33,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-12 11:37:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:33,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:33,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:33,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 11:37:33,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:33,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 11:37:33,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:33,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:37:33,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:37:33,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-12 11:37:33,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:33,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-10-12 11:37:33,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:33,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:33,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:33,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:33,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-12 11:37:33,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:37:33,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-12 11:37:33,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:33,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:37:33,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:37:33,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 11:37:33,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:33,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-10-12 11:37:33,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:33,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:33,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:33,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 11:37:33,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:33,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 11:37:33,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:33,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:37:33,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:37:33,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 11:37:33,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:34,462 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 500 proven. 6 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-12 11:37:34,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750573302] [2020-10-12 11:37:34,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:37:34,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 11:37:34,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572014907] [2020-10-12 11:37:34,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 11:37:34,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:37:34,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 11:37:34,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-12 11:37:34,465 INFO L87 Difference]: Start difference. First operand 15927 states and 17933 transitions. Second operand 9 states. [2020-10-12 11:37:45,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:37:45,861 INFO L93 Difference]: Finished difference Result 42388 states and 57313 transitions. [2020-10-12 11:37:45,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 11:37:45,862 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1079 [2020-10-12 11:37:45,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:37:45,984 INFO L225 Difference]: With dead ends: 42388 [2020-10-12 11:37:45,984 INFO L226 Difference]: Without dead ends: 27194 [2020-10-12 11:37:46,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-10-12 11:37:46,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27194 states. [2020-10-12 11:37:46,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27194 to 24669. [2020-10-12 11:37:46,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24669 states. [2020-10-12 11:37:46,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24669 states to 24669 states and 28167 transitions. [2020-10-12 11:37:46,909 INFO L78 Accepts]: Start accepts. Automaton has 24669 states and 28167 transitions. Word has length 1079 [2020-10-12 11:37:46,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:37:46,910 INFO L479 AbstractCegarLoop]: Abstraction has 24669 states and 28167 transitions. [2020-10-12 11:37:46,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 11:37:46,910 INFO L276 IsEmpty]: Start isEmpty. Operand 24669 states and 28167 transitions. [2020-10-12 11:37:46,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1154 [2020-10-12 11:37:46,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:37:46,963 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:37:46,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 11:37:46,963 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:37:46,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:37:46,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1856075525, now seen corresponding path program 1 times [2020-10-12 11:37:46,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:37:46,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262311044] [2020-10-12 11:37:46,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:37:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:47,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:47,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:47,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking...