/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:30:10,633 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:30:10,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:30:10,676 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:30:10,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:30:10,685 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:30:10,687 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:30:10,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:30:10,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:30:10,695 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:30:10,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:30:10,697 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:30:10,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:30:10,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:30:10,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:30:10,704 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:30:10,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:30:10,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:30:10,708 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:30:10,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:30:10,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:30:10,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:30:10,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:30:10,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:30:10,739 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:30:10,739 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:30:10,739 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:30:10,740 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:30:10,740 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:30:10,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:30:10,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:30:10,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:30:10,749 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:30:10,750 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:30:10,751 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:30:10,751 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:30:10,752 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:30:10,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:30:10,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:30:10,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:30:10,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:30:10,754 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 [2020-10-14 19:30:10,778 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:30:10,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:30:10,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:30:10,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:30:10,780 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:30:10,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:30:10,780 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:30:10,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:30:10,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:30:10,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:30:10,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:30:10,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:30:10,781 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:30:10,782 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:30:10,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:30:10,782 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:30:10,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:30:10,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:30:10,783 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:30:10,783 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:30:10,783 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:30:10,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:30:10,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:30:10,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:30:10,784 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:30:10,784 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:30:10,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:30:10,784 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:30:10,785 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:30:10,785 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 19:30:11,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:30:11,099 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:30:11,106 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:30:11,108 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:30:11,109 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:30:11,110 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label46.c [2020-10-14 19:30:11,172 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0bc1c01d/ab0941df35b146be81e9e6716c00ab54/FLAGe656cc266 [2020-10-14 19:30:11,965 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:30:11,966 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label46.c [2020-10-14 19:30:12,006 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0bc1c01d/ab0941df35b146be81e9e6716c00ab54/FLAGe656cc266 [2020-10-14 19:30:12,053 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0bc1c01d/ab0941df35b146be81e9e6716c00ab54 [2020-10-14 19:30:12,067 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:30:12,069 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:30:12,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:30:12,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:30:12,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:30:12,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:30:12" (1/1) ... [2020-10-14 19:30:12,083 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d81d91a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:30:12, skipping insertion in model container [2020-10-14 19:30:12,083 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:30:12" (1/1) ... [2020-10-14 19:30:12,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:30:12,269 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:30:13,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:30:13,750 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:30:14,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:30:14,450 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:30:14,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:30:14 WrapperNode [2020-10-14 19:30:14,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:30:14,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:30:14,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:30:14,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:30:14,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:30:14" (1/1) ... [2020-10-14 19:30:14,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:30:14" (1/1) ... [2020-10-14 19:30:14,561 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:30:14" (1/1) ... [2020-10-14 19:30:14,562 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:30:14" (1/1) ... [2020-10-14 19:30:14,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:30:14" (1/1) ... [2020-10-14 19:30:14,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:30:14" (1/1) ... [2020-10-14 19:30:14,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:30:14" (1/1) ... [2020-10-14 19:30:14,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:30:14,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:30:14,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:30:14,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:30:14,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:30:14" (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 [2020-10-14 19:30:14,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:30:14,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:30:14,880 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:30:14,880 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 19:30:14,880 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 19:30:14,881 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 19:30:14,881 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:30:14,881 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:30:14,881 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 19:30:14,881 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 19:30:14,882 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 19:30:14,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:30:14,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:30:14,882 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:30:14,882 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:30:14,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:30:14,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:30:19,497 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:30:19,498 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:30:19,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:30:19 BoogieIcfgContainer [2020-10-14 19:30:19,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:30:19,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:30:19,518 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:30:19,521 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:30:19,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:30:12" (1/3) ... [2020-10-14 19:30:19,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b11121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:30:19, skipping insertion in model container [2020-10-14 19:30:19,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:30:14" (2/3) ... [2020-10-14 19:30:19,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b11121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:30:19, skipping insertion in model container [2020-10-14 19:30:19,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:30:19" (3/3) ... [2020-10-14 19:30:19,527 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label46.c [2020-10-14 19:30:19,538 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:30:19,548 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:30:19,563 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:30:19,592 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:30:19,592 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:30:19,592 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:30:19,592 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:30:19,592 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:30:19,593 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:30:19,593 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:30:19,593 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:30:19,629 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-14 19:30:19,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 805 [2020-10-14 19:30:19,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:30:19,665 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:30:19,666 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:30:19,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:30:19,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1865936323, now seen corresponding path program 1 times [2020-10-14 19:30:19,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:30:19,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184725770] [2020-10-14 19:30:19,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:30:20,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:20,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:25,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:25,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 818 [2020-10-14 19:30:25,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:25,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 19:30:25,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:25,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:25,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 19:30:25,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:30:25,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 812 [2020-10-14 19:30:25,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 19:30:26,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:30:26,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:26,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:26,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:26,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:30:26,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:26,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 19:30:26,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:26,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:26,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:30:26,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:30:26,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:30:26,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:30:27,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:30:27,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184725770] [2020-10-14 19:30:27,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:30:27,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 19:30:27,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469328898] [2020-10-14 19:30:27,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 19:30:27,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:30:27,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 19:30:27,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 19:30:27,677 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 4 states. [2020-10-14 19:30:36,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:30:36,046 INFO L93 Difference]: Finished difference Result 2672 states and 5138 transitions. [2020-10-14 19:30:36,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:30:36,051 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 804 [2020-10-14 19:30:36,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:30:36,114 INFO L225 Difference]: With dead ends: 2672 [2020-10-14 19:30:36,115 INFO L226 Difference]: Without dead ends: 1702 [2020-10-14 19:30:36,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:30:36,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2020-10-14 19:30:36,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1687. [2020-10-14 19:30:36,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1687 states. [2020-10-14 19:30:36,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2973 transitions. [2020-10-14 19:30:36,345 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2973 transitions. Word has length 804 [2020-10-14 19:30:36,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:30:36,348 INFO L479 AbstractCegarLoop]: Abstraction has 1687 states and 2973 transitions. [2020-10-14 19:30:36,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 19:30:36,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2973 transitions. [2020-10-14 19:30:36,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 814 [2020-10-14 19:30:36,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:30:36,378 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:30:36,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:30:36,378 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:30:36,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:30:36,379 INFO L82 PathProgramCache]: Analyzing trace with hash 939783976, now seen corresponding path program 1 times [2020-10-14 19:30:36,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:30:36,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775492477] [2020-10-14 19:30:36,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:30:36,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:36,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:36,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:41,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:41,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 829 [2020-10-14 19:30:41,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:30:41,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5148 [2020-10-14 19:30:41,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:41,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:41,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 19:30:41,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 19:30:41,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 718 [2020-10-14 19:30:41,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 19:30:43,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:30:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:43,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:43,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:43,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:30:43,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:43,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:30:43,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:43,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:43,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:30:43,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:30:43,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:30:43,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:30:44,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:30:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:30:44,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:30:44,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:30:44,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 19:30:44,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:30:44,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 19:30:44,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:30:44,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:30:44,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:30:44,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:30:44,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 19:30:44,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:30:48,443 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:30:48,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775492477] [2020-10-14 19:30:48,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:30:48,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 19:30:48,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951035669] [2020-10-14 19:30:48,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 19:30:48,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:30:48,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 19:30:48,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2020-10-14 19:30:48,452 INFO L87 Difference]: Start difference. First operand 1687 states and 2973 transitions. Second operand 19 states. [2020-10-14 19:30:53,637 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2020-10-14 19:30:56,545 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-10-14 19:30:56,787 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2020-10-14 19:30:57,748 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2020-10-14 19:31:00,554 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 92 [2020-10-14 19:31:04,255 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-10-14 19:31:04,474 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2020-10-14 19:31:05,989 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-10-14 19:31:09,614 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-14 19:31:12,333 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-14 19:31:12,528 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-10-14 19:31:15,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:31:15,445 INFO L93 Difference]: Finished difference Result 4094 states and 7390 transitions. [2020-10-14 19:31:15,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 19:31:15,457 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 813 [2020-10-14 19:31:15,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:31:15,472 INFO L225 Difference]: With dead ends: 4094 [2020-10-14 19:31:15,473 INFO L226 Difference]: Without dead ends: 2413 [2020-10-14 19:31:15,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=161, Invalid=895, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 19:31:15,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2020-10-14 19:31:15,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 2409. [2020-10-14 19:31:15,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2409 states. [2020-10-14 19:31:15,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2409 states to 2409 states and 3712 transitions. [2020-10-14 19:31:15,558 INFO L78 Accepts]: Start accepts. Automaton has 2409 states and 3712 transitions. Word has length 813 [2020-10-14 19:31:15,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:31:15,560 INFO L479 AbstractCegarLoop]: Abstraction has 2409 states and 3712 transitions. [2020-10-14 19:31:15,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 19:31:15,561 INFO L276 IsEmpty]: Start isEmpty. Operand 2409 states and 3712 transitions. [2020-10-14 19:31:15,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 825 [2020-10-14 19:31:15,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:31:15,591 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:31:15,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:31:15,592 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:31:15,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:31:15,592 INFO L82 PathProgramCache]: Analyzing trace with hash -975529990, now seen corresponding path program 1 times [2020-10-14 19:31:15,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:31:15,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61813371] [2020-10-14 19:31:15,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:31:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:15,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:16,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:18,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:20,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:20,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 840 [2020-10-14 19:31:20,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:31:20,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 19:31:20,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:20,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:20,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:31:20,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 19:31:20,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 809 [2020-10-14 19:31:20,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:31:21,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:31:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:21,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:21,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:21,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:31:21,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:31:21,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:31:21,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:21,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:21,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:31:21,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:31:21,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:31:21,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 19:31:21,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:31:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:21,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:21,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:21,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 19:31:21,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:31:21,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 19:31:21,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:21,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:21,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:31:21,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:31:21,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 19:31:21,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:31:21,938 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:31:21,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61813371] [2020-10-14 19:31:21,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:31:21,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:31:21,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578304975] [2020-10-14 19:31:21,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:31:21,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:31:21,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:31:21,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:31:21,941 INFO L87 Difference]: Start difference. First operand 2409 states and 3712 transitions. Second operand 5 states. [2020-10-14 19:31:31,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:31:31,231 INFO L93 Difference]: Finished difference Result 6510 states and 10493 transitions. [2020-10-14 19:31:31,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:31:31,232 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 824 [2020-10-14 19:31:31,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:31:31,259 INFO L225 Difference]: With dead ends: 6510 [2020-10-14 19:31:31,260 INFO L226 Difference]: Without dead ends: 4107 [2020-10-14 19:31:31,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:31:31,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4107 states. [2020-10-14 19:31:31,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4107 to 4099. [2020-10-14 19:31:31,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4099 states. [2020-10-14 19:31:31,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4099 states to 4099 states and 5918 transitions. [2020-10-14 19:31:31,374 INFO L78 Accepts]: Start accepts. Automaton has 4099 states and 5918 transitions. Word has length 824 [2020-10-14 19:31:31,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:31:31,376 INFO L479 AbstractCegarLoop]: Abstraction has 4099 states and 5918 transitions. [2020-10-14 19:31:31,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:31:31,377 INFO L276 IsEmpty]: Start isEmpty. Operand 4099 states and 5918 transitions. [2020-10-14 19:31:31,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 826 [2020-10-14 19:31:31,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:31:31,393 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:31:31,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 19:31:31,394 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:31:31,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:31:31,394 INFO L82 PathProgramCache]: Analyzing trace with hash 234362512, now seen corresponding path program 1 times [2020-10-14 19:31:31,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:31:31,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411201245] [2020-10-14 19:31:31,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:31:31,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:31,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:32,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:33,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:36,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:36,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 841 [2020-10-14 19:31:36,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:31:36,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 19:31:36,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:36,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:36,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:31:36,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 19:31:36,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 796 [2020-10-14 19:31:36,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:31:37,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:31:37,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:37,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:37,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:37,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:31:37,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:31:37,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:31:37,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:37,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:37,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:31:37,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:31:37,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:31:37,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 19:31:37,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:31:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:37,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:37,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:37,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 19:31:37,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:31:37,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 19:31:37,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:37,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:37,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:31:37,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:31:37,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 19:31:37,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:31:40,666 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:31:40,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411201245] [2020-10-14 19:31:40,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:31:40,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 19:31:40,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343870561] [2020-10-14 19:31:40,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 19:31:40,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:31:40,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 19:31:40,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:31:40,676 INFO L87 Difference]: Start difference. First operand 4099 states and 5918 transitions. Second operand 6 states. [2020-10-14 19:31:50,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:31:50,265 INFO L93 Difference]: Finished difference Result 8987 states and 13422 transitions. [2020-10-14 19:31:50,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:31:50,270 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 825 [2020-10-14 19:31:50,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:31:50,295 INFO L225 Difference]: With dead ends: 8987 [2020-10-14 19:31:50,295 INFO L226 Difference]: Without dead ends: 4107 [2020-10-14 19:31:50,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:31:50,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4107 states. [2020-10-14 19:31:50,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4107 to 4099. [2020-10-14 19:31:50,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4099 states. [2020-10-14 19:31:50,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4099 states to 4099 states and 5914 transitions. [2020-10-14 19:31:50,403 INFO L78 Accepts]: Start accepts. Automaton has 4099 states and 5914 transitions. Word has length 825 [2020-10-14 19:31:50,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:31:50,404 INFO L479 AbstractCegarLoop]: Abstraction has 4099 states and 5914 transitions. [2020-10-14 19:31:50,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 19:31:50,404 INFO L276 IsEmpty]: Start isEmpty. Operand 4099 states and 5914 transitions. [2020-10-14 19:31:50,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 828 [2020-10-14 19:31:50,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:31:50,421 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:31:50,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 19:31:50,422 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:31:50,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:31:50,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1027785780, now seen corresponding path program 1 times [2020-10-14 19:31:50,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:31:50,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913620740] [2020-10-14 19:31:50,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:31:50,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:50,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:50,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:55,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:55,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 843 [2020-10-14 19:31:55,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:31:55,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-14 19:31:55,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:55,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:55,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 19:31:55,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 19:31:55,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 718 [2020-10-14 19:31:55,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:31:57,526 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-10-14 19:31:57,678 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-10-14 19:31:57,900 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-10-14 19:31:58,578 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 37 [2020-10-14 19:31:58,739 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2020-10-14 19:31:59,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:31:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:59,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:59,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:59,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:31:59,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:31:59,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:31:59,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:59,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:59,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:31:59,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:31:59,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:31:59,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:31:59,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:31:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:31:59,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:31:59,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:31:59,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 19:31:59,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:31:59,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 19:31:59,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:31:59,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:31:59,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:31:59,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:31:59,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 19:31:59,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:32:04,838 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:32:04,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913620740] [2020-10-14 19:32:04,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:32:04,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 19:32:04,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904118309] [2020-10-14 19:32:04,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 19:32:04,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:32:04,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 19:32:04,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2020-10-14 19:32:04,842 INFO L87 Difference]: Start difference. First operand 4099 states and 5914 transitions. Second operand 19 states. [2020-10-14 19:32:05,377 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-14 19:32:05,578 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-14 19:32:10,035 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-14 19:32:12,770 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-14 19:32:12,966 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-14 19:32:14,028 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 105 [2020-10-14 19:32:16,695 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 104 [2020-10-14 19:32:20,236 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-10-14 19:32:20,531 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2020-10-14 19:32:21,979 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 97 [2020-10-14 19:32:25,316 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 92 [2020-10-14 19:32:27,735 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-10-14 19:32:27,975 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-10-14 19:32:30,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:32:30,275 INFO L93 Difference]: Finished difference Result 8909 states and 13291 transitions. [2020-10-14 19:32:30,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 19:32:30,285 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 827 [2020-10-14 19:32:30,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:32:30,310 INFO L225 Difference]: With dead ends: 8909 [2020-10-14 19:32:30,310 INFO L226 Difference]: Without dead ends: 4816 [2020-10-14 19:32:30,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=157, Invalid=835, Unknown=0, NotChecked=0, Total=992 [2020-10-14 19:32:30,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4816 states. [2020-10-14 19:32:30,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4816 to 4099. [2020-10-14 19:32:30,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4099 states. [2020-10-14 19:32:30,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4099 states to 4099 states and 5914 transitions. [2020-10-14 19:32:30,454 INFO L78 Accepts]: Start accepts. Automaton has 4099 states and 5914 transitions. Word has length 827 [2020-10-14 19:32:30,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:32:30,459 INFO L479 AbstractCegarLoop]: Abstraction has 4099 states and 5914 transitions. [2020-10-14 19:32:30,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 19:32:30,459 INFO L276 IsEmpty]: Start isEmpty. Operand 4099 states and 5914 transitions. [2020-10-14 19:32:30,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 831 [2020-10-14 19:32:30,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:32:30,490 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:32:30,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 19:32:30,491 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:32:30,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:32:30,491 INFO L82 PathProgramCache]: Analyzing trace with hash -321093202, now seen corresponding path program 1 times [2020-10-14 19:32:30,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:32:30,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317747873] [2020-10-14 19:32:30,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:32:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:32:30,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:31,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:35,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:32:35,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 846 [2020-10-14 19:32:35,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:32:35,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5135 [2020-10-14 19:32:35,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:32:35,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:32:35,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:32:35,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 19:32:35,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 809 [2020-10-14 19:32:35,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:32:36,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:32:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:32:36,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:36,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:32:36,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:32:36,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:32:36,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:32:36,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:32:36,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:32:36,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:32:36,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:32:36,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:32:36,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:32:36,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:32:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:32:36,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:36,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:32:36,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 19:32:36,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:32:36,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 19:32:36,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:32:36,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:32:36,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:32:36,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:32:36,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 19:32:36,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:32:36,882 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:32:36,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317747873] [2020-10-14 19:32:36,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:32:36,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:32:36,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751981416] [2020-10-14 19:32:36,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:32:36,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:32:36,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:32:36,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:32:36,885 INFO L87 Difference]: Start difference. First operand 4099 states and 5914 transitions. Second operand 5 states. [2020-10-14 19:32:46,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:32:46,051 INFO L93 Difference]: Finished difference Result 11573 states and 17200 transitions. [2020-10-14 19:32:46,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:32:46,052 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 830 [2020-10-14 19:32:46,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:32:46,087 INFO L225 Difference]: With dead ends: 11573 [2020-10-14 19:32:46,087 INFO L226 Difference]: Without dead ends: 7480 [2020-10-14 19:32:46,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:32:46,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7480 states. [2020-10-14 19:32:46,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7480 to 7476. [2020-10-14 19:32:46,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7476 states. [2020-10-14 19:32:46,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7476 states to 7476 states and 10098 transitions. [2020-10-14 19:32:46,268 INFO L78 Accepts]: Start accepts. Automaton has 7476 states and 10098 transitions. Word has length 830 [2020-10-14 19:32:46,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:32:46,270 INFO L479 AbstractCegarLoop]: Abstraction has 7476 states and 10098 transitions. [2020-10-14 19:32:46,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:32:46,270 INFO L276 IsEmpty]: Start isEmpty. Operand 7476 states and 10098 transitions. [2020-10-14 19:32:46,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 841 [2020-10-14 19:32:46,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:32:46,300 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:32:46,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 19:32:46,301 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:32:46,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:32:46,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1499988167, now seen corresponding path program 1 times [2020-10-14 19:32:46,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:32:46,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016478560] [2020-10-14 19:32:46,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:32:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:32:46,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:46,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:49,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:49,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:51,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:32:51,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 858 [2020-10-14 19:32:51,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:32:51,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-14 19:32:51,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:32:51,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:32:51,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:32:51,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 19:32:51,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 809 [2020-10-14 19:32:51,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:32:52,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:32:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:32:52,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:52,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:32:52,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:32:52,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:32:52,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:32:52,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:32:52,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:32:52,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:32:52,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:32:52,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:32:52,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:32:52,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:32:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:32:52,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:52,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:32:52,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 19:32:52,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:32:52,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:32:52,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:32:52,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:32:52,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:32:52,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:32:52,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:32:52,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:32:52,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 19:32:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:32:52,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:32:52,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:32:52,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 19:32:52,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:32:52,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 19:32:52,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:32:52,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:32:52,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:32:52,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:32:52,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 19:32:52,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:32:53,087 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 19:32:53,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016478560] [2020-10-14 19:32:53,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:32:53,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:32:53,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635297810] [2020-10-14 19:32:53,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:32:53,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:32:53,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:32:53,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:32:53,090 INFO L87 Difference]: Start difference. First operand 7476 states and 10098 transitions. Second operand 5 states. [2020-10-14 19:33:03,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:33:03,379 INFO L93 Difference]: Finished difference Result 21704 states and 30010 transitions. [2020-10-14 19:33:03,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:33:03,380 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 840 [2020-10-14 19:33:03,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:33:03,429 INFO L225 Difference]: With dead ends: 21704 [2020-10-14 19:33:03,429 INFO L226 Difference]: Without dead ends: 14234 [2020-10-14 19:33:03,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:33:03,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14234 states. [2020-10-14 19:33:03,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14234 to 14230. [2020-10-14 19:33:03,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14230 states. [2020-10-14 19:33:03,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14230 states to 14230 states and 18319 transitions. [2020-10-14 19:33:03,735 INFO L78 Accepts]: Start accepts. Automaton has 14230 states and 18319 transitions. Word has length 840 [2020-10-14 19:33:03,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:33:03,736 INFO L479 AbstractCegarLoop]: Abstraction has 14230 states and 18319 transitions. [2020-10-14 19:33:03,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:33:03,736 INFO L276 IsEmpty]: Start isEmpty. Operand 14230 states and 18319 transitions. [2020-10-14 19:33:03,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 893 [2020-10-14 19:33:03,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:33:03,779 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:33:03,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 19:33:03,779 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:33:03,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:33:03,780 INFO L82 PathProgramCache]: Analyzing trace with hash -466019887, now seen corresponding path program 1 times [2020-10-14 19:33:03,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:33:03,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785400497] [2020-10-14 19:33:03,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:33:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:33:03,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:04,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:04,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:08,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:33:08,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 910 [2020-10-14 19:33:08,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:33:08,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 19:33:08,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:33:08,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:33:08,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 19:33:08,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 19:33:08,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 670 [2020-10-14 19:33:08,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:33:10,554 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-10-14 19:33:10,710 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2020-10-14 19:33:10,999 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-10-14 19:33:11,220 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 47 [2020-10-14 19:33:11,497 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 47 [2020-10-14 19:33:11,730 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 44 [2020-10-14 19:33:11,950 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 39 [2020-10-14 19:33:12,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:33:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:33:12,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:12,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:33:12,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:33:12,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:33:12,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:33:12,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:33:12,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:33:12,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:33:12,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:33:12,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:33:12,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:33:12,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:33:12,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:33:12,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:12,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:33:12,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 19:33:12,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:33:12,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:33:12,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:33:12,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:33:12,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:33:12,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:33:12,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:33:12,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:33:12,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 19:33:12,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:33:12,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:12,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:33:12,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 19:33:12,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:33:12,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 19:33:12,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:33:12,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:33:12,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:33:12,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:33:12,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 19:33:12,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:33:19,650 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 19:33:19,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785400497] [2020-10-14 19:33:19,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:33:19,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 19:33:19,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265772112] [2020-10-14 19:33:19,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 19:33:19,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:33:19,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 19:33:19,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-10-14 19:33:19,654 INFO L87 Difference]: Start difference. First operand 14230 states and 18319 transitions. Second operand 17 states. [2020-10-14 19:33:20,920 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-14 19:33:21,135 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-14 19:33:27,786 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-14 19:33:28,017 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-14 19:33:32,159 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-14 19:33:33,175 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-14 19:33:35,069 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 98 [2020-10-14 19:33:35,467 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 112 [2020-10-14 19:33:36,020 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 109 [2020-10-14 19:33:40,446 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 106 [2020-10-14 19:33:41,099 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 101 [2020-10-14 19:33:43,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:33:43,768 INFO L93 Difference]: Finished difference Result 29121 states and 38037 transitions. [2020-10-14 19:33:43,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 19:33:43,773 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 892 [2020-10-14 19:33:43,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:33:43,817 INFO L225 Difference]: With dead ends: 29121 [2020-10-14 19:33:43,817 INFO L226 Difference]: Without dead ends: 14897 [2020-10-14 19:33:43,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=145, Invalid=611, Unknown=0, NotChecked=0, Total=756 [2020-10-14 19:33:43,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14897 states. [2020-10-14 19:33:44,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14897 to 14893. [2020-10-14 19:33:44,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14893 states. [2020-10-14 19:33:44,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14893 states to 14893 states and 18996 transitions. [2020-10-14 19:33:44,104 INFO L78 Accepts]: Start accepts. Automaton has 14893 states and 18996 transitions. Word has length 892 [2020-10-14 19:33:44,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:33:44,105 INFO L479 AbstractCegarLoop]: Abstraction has 14893 states and 18996 transitions. [2020-10-14 19:33:44,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 19:33:44,105 INFO L276 IsEmpty]: Start isEmpty. Operand 14893 states and 18996 transitions. [2020-10-14 19:33:44,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 901 [2020-10-14 19:33:44,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:33:44,144 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:33:44,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 19:33:44,145 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:33:44,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:33:44,145 INFO L82 PathProgramCache]: Analyzing trace with hash -2046802400, now seen corresponding path program 1 times [2020-10-14 19:33:44,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:33:44,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862480342] [2020-10-14 19:33:44,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:33:44,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:33:44,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:44,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:44,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:48,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:49,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:33:49,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 920 [2020-10-14 19:33:49,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:33:49,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-14 19:33:49,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:33:49,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:33:49,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:33:49,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 19:33:49,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-14 19:33:49,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:33:49,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:33:49,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:33:49,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:49,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:33:49,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:33:49,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:33:49,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:33:49,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:33:49,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:33:49,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:33:49,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:33:49,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:33:49,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:33:49,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:33:49,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:33:49,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:49,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:33:49,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 19:33:49,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:33:49,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:33:49,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:33:49,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:33:49,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:33:49,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:33:49,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 19:33:49,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:33:49,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 19:33:49,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:33:49,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:49,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:49,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:33:49,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 19:33:49,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:33:49,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 19:33:49,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:33:49,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:33:49,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:33:49,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:33:49,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 19:33:49,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:33:49,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 19:33:49,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:33:49,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:33:49,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:33:49,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 19:33:49,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:33:49,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 19:33:49,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:33:49,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:33:49,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:33:49,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:33:49,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 19:33:49,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:33:50,069 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 97 proven. 19 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 19:33:50,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862480342] [2020-10-14 19:33:50,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:33:50,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:33:50,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276598423] [2020-10-14 19:33:50,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:33:50,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:33:50,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:33:50,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:33:50,072 INFO L87 Difference]: Start difference. First operand 14893 states and 18996 transitions. Second operand 8 states.