/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:29:37,540 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:29:37,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:29:37,569 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:29:37,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:29:37,571 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:29:37,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:29:37,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:29:37,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:29:37,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:29:37,586 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:29:37,587 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:29:37,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:29:37,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:29:37,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:29:37,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:29:37,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:29:37,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:29:37,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:29:37,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:29:37,610 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:29:37,612 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:29:37,613 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:29:37,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:29:37,624 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:29:37,624 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:29:37,625 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:29:37,626 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:29:37,626 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:29:37,627 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:29:37,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:29:37,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:29:37,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:29:37,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:29:37,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:29:37,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:29:37,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:29:37,638 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:29:37,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:29:37,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:29:37,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:29:37,641 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 08:29:37,693 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:29:37,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:29:37,696 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:29:37,696 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:29:37,696 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:29:37,696 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:29:37,696 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:29:37,697 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:29:37,697 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:29:37,697 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:29:37,697 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:29:37,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:29:37,698 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:29:37,698 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:29:37,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:29:37,698 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:29:37,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:29:37,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:29:37,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:29:37,699 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:29:37,699 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:29:37,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:29:37,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:29:37,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:29:37,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:29:37,702 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:29:37,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:29:37,702 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:29:37,702 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:29:37,703 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:29:38,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:29:38,047 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:29:38,051 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:29:38,053 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:29:38,053 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:29:38,054 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label05.c [2020-10-13 08:29:38,123 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23f6e3113/00e13cdbbff2463790cd6e203e4d72de/FLAGae34080fd [2020-10-13 08:29:38,887 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:29:38,888 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label05.c [2020-10-13 08:29:38,935 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23f6e3113/00e13cdbbff2463790cd6e203e4d72de/FLAGae34080fd [2020-10-13 08:29:39,430 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23f6e3113/00e13cdbbff2463790cd6e203e4d72de [2020-10-13 08:29:39,439 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:29:39,441 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:29:39,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:29:39,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:29:39,447 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:29:39,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:29:39" (1/1) ... [2020-10-13 08:29:39,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@743cee4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:29:39, skipping insertion in model container [2020-10-13 08:29:39,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:29:39" (1/1) ... [2020-10-13 08:29:39,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:29:39,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:29:41,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:29:41,324 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:29:42,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:29:42,082 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:29:42,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:29:42 WrapperNode [2020-10-13 08:29:42,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:29:42,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:29:42,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:29:42,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:29:42,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:29:42" (1/1) ... [2020-10-13 08:29:42,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:29:42" (1/1) ... [2020-10-13 08:29:42,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:29:42" (1/1) ... [2020-10-13 08:29:42,194 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:29:42" (1/1) ... [2020-10-13 08:29:42,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:29:42" (1/1) ... [2020-10-13 08:29:42,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:29:42" (1/1) ... [2020-10-13 08:29:42,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:29:42" (1/1) ... [2020-10-13 08:29:42,429 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:29:42,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:29:42,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:29:42,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:29:42,432 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:29:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:29:42,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:29:42,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:29:42,516 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:29:42,516 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:29:42,516 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:29:42,517 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:29:42,517 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:29:42,518 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:29:42,519 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:29:42,519 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:29:42,519 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:29:42,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:29:42,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:29:42,519 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:29:42,520 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:29:42,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:29:42,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:29:54,024 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:29:54,024 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:29:54,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:29:54 BoogieIcfgContainer [2020-10-13 08:29:54,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:29:54,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:29:54,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:29:54,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:29:54,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:29:39" (1/3) ... [2020-10-13 08:29:54,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cccbc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:29:54, skipping insertion in model container [2020-10-13 08:29:54,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:29:42" (2/3) ... [2020-10-13 08:29:54,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cccbc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:29:54, skipping insertion in model container [2020-10-13 08:29:54,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:29:54" (3/3) ... [2020-10-13 08:29:54,053 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label05.c [2020-10-13 08:29:54,066 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:29:54,077 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:29:54,094 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:29:54,128 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:29:54,129 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:29:54,129 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:29:54,129 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:29:54,129 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:29:54,129 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:29:54,130 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:29:54,130 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:29:54,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-13 08:29:54,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 08:29:54,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:29:54,183 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] [2020-10-13 08:29:54,184 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:29:54,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:29:54,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1889841809, now seen corresponding path program 1 times [2020-10-13 08:29:54,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:29:54,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250529149] [2020-10-13 08:29:54,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:29:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:54,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:54,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:54,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 08:29:54,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:54,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-10-13 08:29:54,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:54,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:29:54,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:29:54,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 08:29:54,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:29:54,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:29:54,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:54,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:55,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:55,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:29:55,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:55,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 08:29:55,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:55,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:29:55,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:55,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:29:55,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:55,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:29:55,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250529149] [2020-10-13 08:29:55,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:29:55,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:29:55,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261282306] [2020-10-13 08:29:55,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:29:55,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:29:55,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:29:55,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:29:55,058 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-13 08:30:10,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:30:10,296 INFO L93 Difference]: Finished difference Result 3118 states and 5748 transitions. [2020-10-13 08:30:10,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:30:10,299 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-10-13 08:30:10,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:30:10,337 INFO L225 Difference]: With dead ends: 3118 [2020-10-13 08:30:10,338 INFO L226 Difference]: Without dead ends: 1935 [2020-10-13 08:30:10,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:30:10,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1935 states. [2020-10-13 08:30:10,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1935 to 1917. [2020-10-13 08:30:10,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1917 states. [2020-10-13 08:30:10,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 2935 transitions. [2020-10-13 08:30:10,555 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 2935 transitions. Word has length 48 [2020-10-13 08:30:10,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:30:10,556 INFO L479 AbstractCegarLoop]: Abstraction has 1917 states and 2935 transitions. [2020-10-13 08:30:10,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:30:10,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 2935 transitions. [2020-10-13 08:30:10,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 08:30:10,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:30:10,578 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, 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] [2020-10-13 08:30:10,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:30:10,579 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:30:10,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:30:10,579 INFO L82 PathProgramCache]: Analyzing trace with hash 971877011, now seen corresponding path program 1 times [2020-10-13 08:30:10,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:30:10,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054187580] [2020-10-13 08:30:10,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:30:10,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:10,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:11,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:12,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:12,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:12,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 08:30:12,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:30:12,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1962 [2020-10-13 08:30:12,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:12,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:30:12,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 08:30:12,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 08:30:12,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:30:12,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:30:12,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:12,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:12,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:12,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:30:12,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:30:12,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 08:30:12,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:12,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:30:12,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:30:12,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:30:12,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:30:12,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:30:12,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:12,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:13,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:13,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:30:13,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:30:13,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-13 08:30:13,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:13,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:30:13,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:30:13,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 08:30:13,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:30:13,124 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:30:13,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054187580] [2020-10-13 08:30:13,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:30:13,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:30:13,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313982140] [2020-10-13 08:30:13,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:30:13,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:30:13,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:30:13,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:30:13,130 INFO L87 Difference]: Start difference. First operand 1917 states and 2935 transitions. Second operand 6 states. [2020-10-13 08:30:35,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:30:35,159 INFO L93 Difference]: Finished difference Result 5537 states and 9122 transitions. [2020-10-13 08:30:35,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:30:35,165 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2020-10-13 08:30:35,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:30:35,188 INFO L225 Difference]: With dead ends: 5537 [2020-10-13 08:30:35,189 INFO L226 Difference]: Without dead ends: 3626 [2020-10-13 08:30:35,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:30:35,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3626 states. [2020-10-13 08:30:35,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3626 to 3596. [2020-10-13 08:30:35,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3596 states. [2020-10-13 08:30:35,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3596 states to 3596 states and 5457 transitions. [2020-10-13 08:30:35,329 INFO L78 Accepts]: Start accepts. Automaton has 3596 states and 5457 transitions. Word has length 124 [2020-10-13 08:30:35,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:30:35,333 INFO L479 AbstractCegarLoop]: Abstraction has 3596 states and 5457 transitions. [2020-10-13 08:30:35,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:30:35,333 INFO L276 IsEmpty]: Start isEmpty. Operand 3596 states and 5457 transitions. [2020-10-13 08:30:35,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-13 08:30:35,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:30:35,343 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, 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] [2020-10-13 08:30:35,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:30:35,344 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:30:35,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:30:35,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1216903472, now seen corresponding path program 1 times [2020-10-13 08:30:35,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:30:35,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097839108] [2020-10-13 08:30:35,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:30:35,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:35,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:35,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:36,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:36,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 08:30:36,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:30:36,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1087 [2020-10-13 08:30:36,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:36,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:30:36,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-13 08:30:36,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 08:30:36,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:30:36,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:30:36,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:36,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:36,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:36,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:30:36,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:30:36,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:30:36,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:36,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:30:36,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:30:36,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:30:36,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:30:36,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:30:36,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:36,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:36,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:36,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 08:30:36,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:30:36,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-13 08:30:36,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:36,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:30:36,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:30:36,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 08:30:36,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:30:36,814 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:30:36,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097839108] [2020-10-13 08:30:36,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:30:36,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:30:36,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127464249] [2020-10-13 08:30:36,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:30:36,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:30:36,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:30:36,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:30:36,819 INFO L87 Difference]: Start difference. First operand 3596 states and 5457 transitions. Second operand 5 states. [2020-10-13 08:30:54,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:30:54,329 INFO L93 Difference]: Finished difference Result 10577 states and 16305 transitions. [2020-10-13 08:30:54,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:30:54,331 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-10-13 08:30:54,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:30:54,368 INFO L225 Difference]: With dead ends: 10577 [2020-10-13 08:30:54,369 INFO L226 Difference]: Without dead ends: 6987 [2020-10-13 08:30:54,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:30:54,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6987 states. [2020-10-13 08:30:54,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6987 to 6969. [2020-10-13 08:30:54,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6969 states. [2020-10-13 08:30:54,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6969 states to 6969 states and 9961 transitions. [2020-10-13 08:30:54,570 INFO L78 Accepts]: Start accepts. Automaton has 6969 states and 9961 transitions. Word has length 138 [2020-10-13 08:30:54,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:30:54,571 INFO L479 AbstractCegarLoop]: Abstraction has 6969 states and 9961 transitions. [2020-10-13 08:30:54,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:30:54,571 INFO L276 IsEmpty]: Start isEmpty. Operand 6969 states and 9961 transitions. [2020-10-13 08:30:54,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-13 08:30:54,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:30:54,576 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:30:54,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:30:54,577 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:30:54,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:30:54,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1694074925, now seen corresponding path program 1 times [2020-10-13 08:30:54,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:30:54,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328057817] [2020-10-13 08:30:54,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:30:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:54,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:54,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:54,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:56,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:56,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:59,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:59,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-13 08:30:59,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:30:59,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-13 08:30:59,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:59,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:30:59,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-13 08:30:59,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 08:30:59,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 08:30:59,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:30:59,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:59,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:30:59,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:30:59,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:30:59,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:30:59,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:30:59,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:30:59,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:30:59,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:30:59,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:30:59,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:30:59,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:30:59,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:30:59,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:00,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:00,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 08:31:00,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:31:00,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 08:31:00,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:00,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:31:00,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:31:00,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:31:00,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:31:00,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 08:31:00,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:00,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:00,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:00,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:31:00,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:31:00,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 08:31:00,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:00,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:31:00,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:31:00,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:31:00,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:31:00,357 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-13 08:31:00,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328057817] [2020-10-13 08:31:00,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:31:00,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:31:00,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018818372] [2020-10-13 08:31:00,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:31:00,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:31:00,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:31:00,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:31:00,363 INFO L87 Difference]: Start difference. First operand 6969 states and 9961 transitions. Second operand 6 states. [2020-10-13 08:31:02,156 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-10-13 08:31:20,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:31:20,448 INFO L93 Difference]: Finished difference Result 13968 states and 19975 transitions. [2020-10-13 08:31:20,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 08:31:20,452 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 216 [2020-10-13 08:31:20,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:31:20,491 INFO L225 Difference]: With dead ends: 13968 [2020-10-13 08:31:20,491 INFO L226 Difference]: Without dead ends: 6973 [2020-10-13 08:31:20,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:31:20,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6973 states. [2020-10-13 08:31:20,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6973 to 6969. [2020-10-13 08:31:20,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6969 states. [2020-10-13 08:31:20,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6969 states to 6969 states and 9957 transitions. [2020-10-13 08:31:20,714 INFO L78 Accepts]: Start accepts. Automaton has 6969 states and 9957 transitions. Word has length 216 [2020-10-13 08:31:20,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:31:20,716 INFO L479 AbstractCegarLoop]: Abstraction has 6969 states and 9957 transitions. [2020-10-13 08:31:20,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:31:20,716 INFO L276 IsEmpty]: Start isEmpty. Operand 6969 states and 9957 transitions. [2020-10-13 08:31:20,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-13 08:31:20,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:31:20,724 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:31:20,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:31:20,725 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:31:20,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:31:20,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1916782119, now seen corresponding path program 1 times [2020-10-13 08:31:20,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:31:20,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046031259] [2020-10-13 08:31:20,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:31:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:20,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:20,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:21,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:22,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:23,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:23,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:23,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:25,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:25,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:25,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-13 08:31:25,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 08:31:25,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 08:31:25,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:25,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:31:25,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 205 [2020-10-13 08:31:25,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 08:31:25,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:31:25,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:31:25,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:25,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:25,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:25,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:31:25,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:31:25,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:31:25,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:25,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:31:25,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:31:25,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:31:25,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:31:26,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:31:26,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:26,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:26,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:26,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 08:31:26,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:31:26,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 08:31:26,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:26,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:31:26,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:31:26,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:31:26,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:31:26,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-13 08:31:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:26,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:26,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:26,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:31:26,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:31:26,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 08:31:26,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:26,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:31:26,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:31:26,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:31:26,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:31:26,351 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-13 08:31:26,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046031259] [2020-10-13 08:31:26,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:31:26,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:31:26,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789094862] [2020-10-13 08:31:26,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:31:26,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:31:26,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:31:26,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:31:26,355 INFO L87 Difference]: Start difference. First operand 6969 states and 9957 transitions. Second operand 5 states. [2020-10-13 08:31:50,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:31:50,212 INFO L93 Difference]: Finished difference Result 20612 states and 30209 transitions. [2020-10-13 08:31:50,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:31:50,216 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 242 [2020-10-13 08:31:50,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:31:50,277 INFO L225 Difference]: With dead ends: 20612 [2020-10-13 08:31:50,277 INFO L226 Difference]: Without dead ends: 13649 [2020-10-13 08:31:50,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:31:50,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13649 states. [2020-10-13 08:31:50,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13649 to 13539. [2020-10-13 08:31:50,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13539 states. [2020-10-13 08:31:50,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13539 states to 13539 states and 19153 transitions. [2020-10-13 08:31:50,640 INFO L78 Accepts]: Start accepts. Automaton has 13539 states and 19153 transitions. Word has length 242 [2020-10-13 08:31:50,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:31:50,641 INFO L479 AbstractCegarLoop]: Abstraction has 13539 states and 19153 transitions. [2020-10-13 08:31:50,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:31:50,641 INFO L276 IsEmpty]: Start isEmpty. Operand 13539 states and 19153 transitions. [2020-10-13 08:31:50,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-13 08:31:50,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:31:50,652 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:31:50,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:31:50,652 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:31:50,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:31:50,653 INFO L82 PathProgramCache]: Analyzing trace with hash -412298478, now seen corresponding path program 1 times [2020-10-13 08:31:50,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:31:50,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624142000] [2020-10-13 08:31:50,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:31:50,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:50,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:50,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:50,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:51,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:53,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:53,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:55,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:55,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-13 08:31:55,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 08:31:55,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 08:31:55,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:55,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:31:55,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-13 08:31:55,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-13 08:31:55,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:31:55,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:31:55,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:55,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:55,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:55,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:31:55,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:31:55,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:31:55,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:55,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:31:55,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:31:55,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:31:55,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:31:55,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:31:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:55,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:56,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:56,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 08:31:56,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:31:56,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-13 08:31:56,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:56,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:31:56,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:31:56,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-13 08:31:56,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:31:56,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-13 08:31:56,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:56,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:56,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:56,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 08:31:56,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:31:56,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-13 08:31:56,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:56,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:31:56,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:31:56,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 08:31:56,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:31:56,526 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:31:56,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [624142000] [2020-10-13 08:31:56,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:31:56,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:31:56,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005129475] [2020-10-13 08:31:56,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:31:56,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:31:56,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:31:56,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:31:56,532 INFO L87 Difference]: Start difference. First operand 13539 states and 19153 transitions. Second operand 7 states. [2020-10-13 08:32:31,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:32:31,008 INFO L93 Difference]: Finished difference Result 34079 states and 50196 transitions. [2020-10-13 08:32:31,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:32:31,012 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 266 [2020-10-13 08:32:31,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:32:31,116 INFO L225 Difference]: With dead ends: 34079 [2020-10-13 08:32:31,116 INFO L226 Difference]: Without dead ends: 20546 [2020-10-13 08:32:31,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:32:31,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20546 states. [2020-10-13 08:32:31,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20546 to 20447. [2020-10-13 08:32:31,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20447 states. [2020-10-13 08:32:31,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20447 states to 20447 states and 28968 transitions. [2020-10-13 08:32:31,712 INFO L78 Accepts]: Start accepts. Automaton has 20447 states and 28968 transitions. Word has length 266 [2020-10-13 08:32:31,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:32:31,713 INFO L479 AbstractCegarLoop]: Abstraction has 20447 states and 28968 transitions. [2020-10-13 08:32:31,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:32:31,713 INFO L276 IsEmpty]: Start isEmpty. Operand 20447 states and 28968 transitions. [2020-10-13 08:32:31,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-13 08:32:31,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:32:31,727 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:32:31,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:32:31,727 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:32:31,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:32:31,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1220579138, now seen corresponding path program 1 times [2020-10-13 08:32:31,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:32:31,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412569293] [2020-10-13 08:32:31,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:32:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:31,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:33,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:33,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:33,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:35,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:35,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-13 08:32:35,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:32:35,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3562 [2020-10-13 08:32:35,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:35,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:32:35,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 241 [2020-10-13 08:32:35,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 08:32:35,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:32:35,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:32:35,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:35,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:35,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:35,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:32:35,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:32:35,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:32:35,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:35,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:32:35,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:32:35,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:32:35,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:32:35,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:32:35,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:35,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:35,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:35,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 08:32:35,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:32:35,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 08:32:35,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:35,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:32:35,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:32:35,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:32:35,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:32:35,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-13 08:32:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:35,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:35,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:35,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 08:32:35,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:32:35,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-13 08:32:35,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:35,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:32:35,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:32:35,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:32:35,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:32:36,030 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-13 08:32:36,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412569293] [2020-10-13 08:32:36,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:32:36,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:32:36,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446145722] [2020-10-13 08:32:36,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:32:36,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:32:36,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:32:36,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:32:36,035 INFO L87 Difference]: Start difference. First operand 20447 states and 28968 transitions. Second operand 5 states. [2020-10-13 08:33:01,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:33:01,469 INFO L93 Difference]: Finished difference Result 50747 states and 74701 transitions. [2020-10-13 08:33:01,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:33:01,473 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 277 [2020-10-13 08:33:01,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:33:01,618 INFO L225 Difference]: With dead ends: 50747 [2020-10-13 08:33:01,618 INFO L226 Difference]: Without dead ends: 30310 [2020-10-13 08:33:01,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:33:01,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30310 states. [2020-10-13 08:33:02,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30310 to 30290. [2020-10-13 08:33:02,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30290 states. [2020-10-13 08:33:02,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30290 states to 30290 states and 42683 transitions. [2020-10-13 08:33:02,362 INFO L78 Accepts]: Start accepts. Automaton has 30290 states and 42683 transitions. Word has length 277 [2020-10-13 08:33:02,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:33:02,363 INFO L479 AbstractCegarLoop]: Abstraction has 30290 states and 42683 transitions. [2020-10-13 08:33:02,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:33:02,363 INFO L276 IsEmpty]: Start isEmpty. Operand 30290 states and 42683 transitions. [2020-10-13 08:33:02,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-13 08:33:02,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:33:02,380 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:33:02,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:33:02,381 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:33:02,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:33:02,382 INFO L82 PathProgramCache]: Analyzing trace with hash 239935391, now seen corresponding path program 1 times [2020-10-13 08:33:02,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:33:02,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582834355] [2020-10-13 08:33:02,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:33:02,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:02,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:02,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:03,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:05,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:05,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-10-13 08:33:05,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:33:05,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3309 [2020-10-13 08:33:05,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:05,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:33:05,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 244 [2020-10-13 08:33:05,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 08:33:05,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:05,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:33:05,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:05,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:06,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:06,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:33:06,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:06,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:33:06,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:06,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:33:06,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:33:06,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:33:06,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:06,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:33:06,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:06,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:06,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:06,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 08:33:06,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:06,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 08:33:06,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:06,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:33:06,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:33:06,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:33:06,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:33:06,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 08:33:06,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:06,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:06,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:06,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-13 08:33:06,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:06,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-13 08:33:06,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:06,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:33:06,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:33:06,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-13 08:33:06,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:06,445 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-13 08:33:06,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582834355] [2020-10-13 08:33:06,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:33:06,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:33:06,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496164563] [2020-10-13 08:33:06,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:33:06,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:33:06,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:33:06,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:33:06,448 INFO L87 Difference]: Start difference. First operand 30290 states and 42683 transitions. Second operand 6 states.