/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/Problem15_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:56:58,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:56:58,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:56:58,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:56:58,627 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:56:58,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:56:58,638 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:56:58,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:56:58,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:56:58,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:56:58,649 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:56:58,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:56:58,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:56:58,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:56:58,656 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:56:58,658 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:56:58,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:56:58,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:56:58,662 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:56:58,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:56:58,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:56:58,676 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:56:58,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:56:58,678 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:56:58,692 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:56:58,692 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:56:58,692 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:56:58,694 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:56:58,695 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:56:58,695 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:56:58,696 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:56:58,696 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:56:58,699 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:56:58,701 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:56:58,702 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:56:58,702 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:56:58,703 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:56:58,703 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:56:58,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:56:58,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:56:58,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:56:58,707 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 21:56:58,755 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:56:58,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:56:58,758 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:56:58,758 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:56:58,759 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:56:58,759 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:56:58,759 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:56:58,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:56:58,760 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:56:58,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:56:58,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:56:58,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:56:58,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:56:58,762 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:56:58,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:56:58,762 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:56:58,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:56:58,763 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:56:58,763 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:56:58,763 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:56:58,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:56:58,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:56:58,764 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:56:58,764 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:56:58,764 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:56:58,764 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:56:58,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:56:58,765 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:56:58,765 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:56:58,765 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 21:56:59,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:56:59,148 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:56:59,152 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:56:59,154 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:56:59,154 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:56:59,155 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label21.c [2020-10-14 21:56:59,219 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bacc66cea/e942e065fc934ad3a2e87256b0b2c1e4/FLAG9bcc4d5fb [2020-10-14 21:56:59,932 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:56:59,933 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label21.c [2020-10-14 21:56:59,955 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bacc66cea/e942e065fc934ad3a2e87256b0b2c1e4/FLAG9bcc4d5fb [2020-10-14 21:57:00,053 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bacc66cea/e942e065fc934ad3a2e87256b0b2c1e4 [2020-10-14 21:57:00,066 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:57:00,068 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:57:00,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:57:00,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:57:00,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:57:00,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:57:00" (1/1) ... [2020-10-14 21:57:00,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e0f1a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:57:00, skipping insertion in model container [2020-10-14 21:57:00,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:57:00" (1/1) ... [2020-10-14 21:57:00,086 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:57:00,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:57:01,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:57:01,159 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:57:01,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:57:01,477 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:57:01,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:57:01 WrapperNode [2020-10-14 21:57:01,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:57:01,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:57:01,481 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:57:01,481 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:57:01,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:57:01" (1/1) ... [2020-10-14 21:57:01,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:57:01" (1/1) ... [2020-10-14 21:57:01,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:57:01" (1/1) ... [2020-10-14 21:57:01,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:57:01" (1/1) ... [2020-10-14 21:57:01,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:57:01" (1/1) ... [2020-10-14 21:57:01,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:57:01" (1/1) ... [2020-10-14 21:57:01,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:57:01" (1/1) ... [2020-10-14 21:57:01,694 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:57:01,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:57:01,695 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:57:01,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:57:01,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:57:01" (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 21:57:01,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:57:01,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:57:01,771 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:57:01,772 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:57:01,772 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:57:01,772 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:57:01,772 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:57:01,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:57:01,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:57:01,773 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:57:01,773 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:57:01,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:57:01,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:57:08,474 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:57:08,476 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:57:08,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:57:08 BoogieIcfgContainer [2020-10-14 21:57:08,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:57:08,489 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:57:08,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:57:08,495 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:57:08,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:57:00" (1/3) ... [2020-10-14 21:57:08,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a1e6a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:57:08, skipping insertion in model container [2020-10-14 21:57:08,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:57:01" (2/3) ... [2020-10-14 21:57:08,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a1e6a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:57:08, skipping insertion in model container [2020-10-14 21:57:08,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:57:08" (3/3) ... [2020-10-14 21:57:08,502 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label21.c [2020-10-14 21:57:08,520 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:57:08,536 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:57:08,564 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:57:08,604 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:57:08,604 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:57:08,604 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:57:08,604 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:57:08,605 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:57:08,605 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:57:08,605 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:57:08,605 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:57:08,647 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 21:57:08,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 21:57:08,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:57:08,664 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] [2020-10-14 21:57:08,665 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:57:08,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:57:08,676 INFO L82 PathProgramCache]: Analyzing trace with hash 567544400, now seen corresponding path program 1 times [2020-10-14 21:57:08,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:57:08,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813945225] [2020-10-14 21:57:08,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:57:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:09,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:09,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:09,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:57:09,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:09,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 603 [2020-10-14 21:57:09,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:09,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:09,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:57:09,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:57:09,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 21:57:09,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 21:57:09,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:57:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:09,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:09,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:09,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:57:09,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:09,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 21:57:09,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:09,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:09,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:57:09,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:09,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:57:09,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:09,829 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 21:57:09,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813945225] [2020-10-14 21:57:09,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:57:09,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:57:09,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731057654] [2020-10-14 21:57:09,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:57:09,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:57:09,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:57:09,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:57:09,954 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 21:57:17,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:57:17,053 INFO L93 Difference]: Finished difference Result 1240 states and 2220 transitions. [2020-10-14 21:57:17,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:57:17,054 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-10-14 21:57:17,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:57:17,080 INFO L225 Difference]: With dead ends: 1240 [2020-10-14 21:57:17,081 INFO L226 Difference]: Without dead ends: 724 [2020-10-14 21:57:17,092 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 [2020-10-14 21:57:17,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2020-10-14 21:57:17,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 712. [2020-10-14 21:57:17,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 712 states. [2020-10-14 21:57:17,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1129 transitions. [2020-10-14 21:57:17,217 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1129 transitions. Word has length 66 [2020-10-14 21:57:17,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:57:17,218 INFO L479 AbstractCegarLoop]: Abstraction has 712 states and 1129 transitions. [2020-10-14 21:57:17,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:57:17,219 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1129 transitions. [2020-10-14 21:57:17,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 21:57:17,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:57:17,228 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, 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] [2020-10-14 21:57:17,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:57:17,228 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:57:17,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:57:17,229 INFO L82 PathProgramCache]: Analyzing trace with hash 782260139, now seen corresponding path program 1 times [2020-10-14 21:57:17,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:57:17,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979042427] [2020-10-14 21:57:17,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:57:17,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:17,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:17,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:18,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:19,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:19,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 21:57:19,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:57:19,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2069 [2020-10-14 21:57:19,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:19,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:19,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:57:19,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 21:57:19,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 21:57:19,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:57:19,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:57:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:19,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:19,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:19,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:57:19,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:19,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:57:19,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:19,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:19,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:57:19,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:19,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:57:19,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:19,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:57:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:19,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:19,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:19,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 21:57:19,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:19,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-14 21:57:19,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:19,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:19,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:57:19,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:19,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 21:57:19,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:19,856 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:57:19,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979042427] [2020-10-14 21:57:19,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:57:19,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:57:19,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524263920] [2020-10-14 21:57:19,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:57:19,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:57:19,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:57:19,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:57:19,864 INFO L87 Difference]: Start difference. First operand 712 states and 1129 transitions. Second operand 5 states. [2020-10-14 21:57:26,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:57:26,870 INFO L93 Difference]: Finished difference Result 1752 states and 2851 transitions. [2020-10-14 21:57:26,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:57:26,871 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-10-14 21:57:26,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:57:26,883 INFO L225 Difference]: With dead ends: 1752 [2020-10-14 21:57:26,883 INFO L226 Difference]: Without dead ends: 1046 [2020-10-14 21:57:26,886 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 [2020-10-14 21:57:26,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2020-10-14 21:57:26,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 1037. [2020-10-14 21:57:26,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2020-10-14 21:57:26,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1586 transitions. [2020-10-14 21:57:26,927 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1586 transitions. Word has length 138 [2020-10-14 21:57:26,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:57:26,928 INFO L479 AbstractCegarLoop]: Abstraction has 1037 states and 1586 transitions. [2020-10-14 21:57:26,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:57:26,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1586 transitions. [2020-10-14 21:57:26,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-14 21:57:26,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:57:26,940 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, 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] [2020-10-14 21:57:26,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:57:26,940 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:57:26,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:57:26,941 INFO L82 PathProgramCache]: Analyzing trace with hash -189989812, now seen corresponding path program 1 times [2020-10-14 21:57:26,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:57:26,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720514828] [2020-10-14 21:57:26,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:57:27,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:27,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:27,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:27,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:27,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:28,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:28,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 21:57:28,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:57:28,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1290 [2020-10-14 21:57:28,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:28,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:28,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:57:28,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 21:57:28,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 21:57:28,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:28,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:57:28,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:28,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:28,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:28,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:57:28,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:28,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:57:28,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:28,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:28,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:57:28,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:28,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:57:28,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:28,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:57:28,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:28,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:28,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:28,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:28,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:57:28,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:57:28,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-14 21:57:28,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:28,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:28,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:57:28,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:28,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 21:57:28,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:28,723 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:57:28,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720514828] [2020-10-14 21:57:28,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:57:28,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:57:28,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865092516] [2020-10-14 21:57:28,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:57:28,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:57:28,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:57:28,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:57:28,727 INFO L87 Difference]: Start difference. First operand 1037 states and 1586 transitions. Second operand 5 states. [2020-10-14 21:57:39,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:57:39,078 INFO L93 Difference]: Finished difference Result 3006 states and 4655 transitions. [2020-10-14 21:57:39,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:57:39,086 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-10-14 21:57:39,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:57:39,104 INFO L225 Difference]: With dead ends: 3006 [2020-10-14 21:57:39,104 INFO L226 Difference]: Without dead ends: 1975 [2020-10-14 21:57:39,109 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 [2020-10-14 21:57:39,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2020-10-14 21:57:39,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1967. [2020-10-14 21:57:39,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1967 states. [2020-10-14 21:57:39,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1967 states to 1967 states and 2662 transitions. [2020-10-14 21:57:39,186 INFO L78 Accepts]: Start accepts. Automaton has 1967 states and 2662 transitions. Word has length 139 [2020-10-14 21:57:39,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:57:39,186 INFO L479 AbstractCegarLoop]: Abstraction has 1967 states and 2662 transitions. [2020-10-14 21:57:39,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:57:39,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1967 states and 2662 transitions. [2020-10-14 21:57:39,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-14 21:57:39,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:57:39,190 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, 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] [2020-10-14 21:57:39,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:57:39,191 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:57:39,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:57:39,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1876169650, now seen corresponding path program 1 times [2020-10-14 21:57:39,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:57:39,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586311804] [2020-10-14 21:57:39,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:57:39,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:39,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:39,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:39,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:39,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:41,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:41,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 21:57:41,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:57:41,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2482 [2020-10-14 21:57:41,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:41,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:41,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 21:57:41,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 21:57:41,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-14 21:57:41,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:57:41,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:57:41,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:41,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:41,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:41,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:57:41,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:41,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:57:41,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:41,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:41,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:57:41,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:41,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:57:41,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:57:41,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:57:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:41,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:41,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:42,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:42,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:57:42,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:57:42,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-14 21:57:42,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:42,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:42,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:57:42,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:42,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 21:57:42,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:42,281 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:57:42,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586311804] [2020-10-14 21:57:42,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:57:42,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:57:42,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798351613] [2020-10-14 21:57:42,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:57:42,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:57:42,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:57:42,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:57:42,290 INFO L87 Difference]: Start difference. First operand 1967 states and 2662 transitions. Second operand 6 states. [2020-10-14 21:57:54,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:57:54,322 INFO L93 Difference]: Finished difference Result 6111 states and 8734 transitions. [2020-10-14 21:57:54,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:57:54,324 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2020-10-14 21:57:54,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:57:54,356 INFO L225 Difference]: With dead ends: 6111 [2020-10-14 21:57:54,357 INFO L226 Difference]: Without dead ends: 4150 [2020-10-14 21:57:54,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:57:54,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4150 states. [2020-10-14 21:57:54,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4150 to 3522. [2020-10-14 21:57:54,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3522 states. [2020-10-14 21:57:54,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3522 states to 3522 states and 5004 transitions. [2020-10-14 21:57:54,489 INFO L78 Accepts]: Start accepts. Automaton has 3522 states and 5004 transitions. Word has length 139 [2020-10-14 21:57:54,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:57:54,490 INFO L479 AbstractCegarLoop]: Abstraction has 3522 states and 5004 transitions. [2020-10-14 21:57:54,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:57:54,490 INFO L276 IsEmpty]: Start isEmpty. Operand 3522 states and 5004 transitions. [2020-10-14 21:57:54,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-10-14 21:57:54,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:57:54,502 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:57:54,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:57:54,503 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:57:54,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:57:54,503 INFO L82 PathProgramCache]: Analyzing trace with hash -613779770, now seen corresponding path program 1 times [2020-10-14 21:57:54,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:57:54,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1627883990] [2020-10-14 21:57:54,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:57:54,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:54,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:54,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:55,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:56,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:59,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:59,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-14 21:57:59,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:57:59,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-14 21:57:59,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:59,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:59,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:57:59,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 21:57:59,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-14 21:57:59,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:59,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:57:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:59,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:59,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:59,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:57:59,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:59,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:57:59,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:59,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:59,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:57:59,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:59,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:57:59,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:59,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:57:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:59,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:57:59,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:57:59,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 21:57:59,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:57:59,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 21:57:59,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:57:59,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:57:59,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:57:59,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:57:59,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 21:57:59,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:57:59,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 21:57:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:57:59,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:00,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:00,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 21:58:00,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:00,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-10-14 21:58:00,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:00,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:00,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:58:00,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:58:00,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-14 21:58:00,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:58:00,562 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:58:00,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1627883990] [2020-10-14 21:58:00,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:58:00,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:58:00,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466967411] [2020-10-14 21:58:00,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:58:00,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:58:00,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:58:00,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:58:00,565 INFO L87 Difference]: Start difference. First operand 3522 states and 5004 transitions. Second operand 7 states. [2020-10-14 21:58:12,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:58:12,996 INFO L93 Difference]: Finished difference Result 10347 states and 15553 transitions. [2020-10-14 21:58:12,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:58:12,997 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 337 [2020-10-14 21:58:12,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:58:13,042 INFO L225 Difference]: With dead ends: 10347 [2020-10-14 21:58:13,043 INFO L226 Difference]: Without dead ends: 6831 [2020-10-14 21:58:13,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:58:13,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6831 states. [2020-10-14 21:58:13,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6831 to 6371. [2020-10-14 21:58:13,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6371 states. [2020-10-14 21:58:13,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6371 states to 6371 states and 8444 transitions. [2020-10-14 21:58:13,285 INFO L78 Accepts]: Start accepts. Automaton has 6371 states and 8444 transitions. Word has length 337 [2020-10-14 21:58:13,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:58:13,286 INFO L479 AbstractCegarLoop]: Abstraction has 6371 states and 8444 transitions. [2020-10-14 21:58:13,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:58:13,286 INFO L276 IsEmpty]: Start isEmpty. Operand 6371 states and 8444 transitions. [2020-10-14 21:58:13,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-10-14 21:58:13,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:58:13,306 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:13,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:58:13,307 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:58:13,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:58:13,307 INFO L82 PathProgramCache]: Analyzing trace with hash 50642115, now seen corresponding path program 1 times [2020-10-14 21:58:13,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:58:13,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19171982] [2020-10-14 21:58:13,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:58:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:13,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:13,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:13,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:17,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:18,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:18,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-10-14 21:58:18,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:58:18,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 21:58:18,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:18,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:18,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:58:18,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 21:58:18,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-10-14 21:58:18,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:58:18,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:58:18,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:18,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:18,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:18,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:58:18,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:18,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:58:18,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:18,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:18,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:58:18,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:18,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:58:18,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:58:18,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:58:18,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:18,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:18,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:18,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:58:18,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:18,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 21:58:18,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:18,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:18,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:58:18,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:18,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 21:58:18,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:58:18,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 21:58:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:18,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:19,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:19,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 21:58:19,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:19,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 499 [2020-10-14 21:58:19,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:19,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:19,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:58:19,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:58:19,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-14 21:58:19,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:58:19,517 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 186 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:58:19,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [19171982] [2020-10-14 21:58:19,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:58:19,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:58:19,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634936777] [2020-10-14 21:58:19,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:58:19,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:58:19,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:58:19,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:58:19,522 INFO L87 Difference]: Start difference. First operand 6371 states and 8444 transitions. Second operand 7 states. [2020-10-14 21:58:34,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:58:34,222 INFO L93 Difference]: Finished difference Result 18599 states and 25982 transitions. [2020-10-14 21:58:34,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:58:34,224 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 338 [2020-10-14 21:58:34,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:58:34,303 INFO L225 Difference]: With dead ends: 18599 [2020-10-14 21:58:34,304 INFO L226 Difference]: Without dead ends: 12540 [2020-10-14 21:58:34,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:58:34,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12540 states. [2020-10-14 21:58:34,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12540 to 12503. [2020-10-14 21:58:34,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12503 states. [2020-10-14 21:58:34,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12503 states to 12503 states and 16408 transitions. [2020-10-14 21:58:34,732 INFO L78 Accepts]: Start accepts. Automaton has 12503 states and 16408 transitions. Word has length 338 [2020-10-14 21:58:34,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:58:34,733 INFO L479 AbstractCegarLoop]: Abstraction has 12503 states and 16408 transitions. [2020-10-14 21:58:34,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:58:34,733 INFO L276 IsEmpty]: Start isEmpty. Operand 12503 states and 16408 transitions. [2020-10-14 21:58:34,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-10-14 21:58:34,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:58:34,776 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:34,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:58:34,776 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:58:34,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:58:34,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1666336178, now seen corresponding path program 1 times [2020-10-14 21:58:34,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:58:34,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190761571] [2020-10-14 21:58:34,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:58:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:34,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:34,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:35,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:35,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:38,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:38,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:39,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:39,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 353 [2020-10-14 21:58:39,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 21:58:39,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 21:58:39,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:39,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:39,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:58:39,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 21:58:39,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-14 21:58:39,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:39,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:58:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:39,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:39,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:39,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:58:39,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:39,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:58:39,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:39,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:39,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:58:39,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:39,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:58:39,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:58:39,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:58:39,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:40,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:40,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:40,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 21:58:40,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:40,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 21:58:40,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:40,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:40,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:58:40,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:40,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 21:58:40,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:58:40,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 21:58:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:40,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:40,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:40,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 21:58:40,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:40,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-14 21:58:40,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:40,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:40,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:58:40,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:58:40,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-14 21:58:40,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:40,603 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:58:40,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [190761571] [2020-10-14 21:58:40,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:58:40,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:58:40,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46162024] [2020-10-14 21:58:40,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:58:40,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:58:40,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:58:40,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:58:40,606 INFO L87 Difference]: Start difference. First operand 12503 states and 16408 transitions. Second operand 7 states. [2020-10-14 21:58:50,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:58:50,443 INFO L93 Difference]: Finished difference Result 28367 states and 41594 transitions. [2020-10-14 21:58:50,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:58:50,445 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 341 [2020-10-14 21:58:50,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:58:50,587 INFO L225 Difference]: With dead ends: 28367 [2020-10-14 21:58:50,588 INFO L226 Difference]: Without dead ends: 16188 [2020-10-14 21:58:50,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:58:50,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16188 states. [2020-10-14 21:58:51,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16188 to 15709. [2020-10-14 21:58:51,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15709 states. [2020-10-14 21:58:51,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15709 states to 15709 states and 20321 transitions. [2020-10-14 21:58:51,239 INFO L78 Accepts]: Start accepts. Automaton has 15709 states and 20321 transitions. Word has length 341 [2020-10-14 21:58:51,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:58:51,240 INFO L479 AbstractCegarLoop]: Abstraction has 15709 states and 20321 transitions. [2020-10-14 21:58:51,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:58:51,240 INFO L276 IsEmpty]: Start isEmpty. Operand 15709 states and 20321 transitions. [2020-10-14 21:58:51,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-10-14 21:58:51,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:58:51,289 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:51,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:58:51,289 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:58:51,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:58:51,289 INFO L82 PathProgramCache]: Analyzing trace with hash 2028502486, now seen corresponding path program 1 times [2020-10-14 21:58:51,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:58:51,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328985661] [2020-10-14 21:58:51,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:58:51,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:51,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:51,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:52,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:53,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:54,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:56,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:56,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 357 [2020-10-14 21:58:56,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:58:56,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-14 21:58:56,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:56,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:56,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:58:56,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-14 21:58:56,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-14 21:58:56,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:58:56,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:58:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:56,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:56,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:56,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:58:56,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:56,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:58:56,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:56,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:56,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:58:56,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:56,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:58:56,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:58:56,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:58:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:56,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:56,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:56,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:58:56,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:56,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 21:58:56,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:56,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:56,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:58:56,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:58:56,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 21:58:56,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:58:56,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 21:58:56,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:58:56,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:58:57,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:58:57,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 21:58:57,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:58:57,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-14 21:58:57,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:58:57,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:58:57,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:58:57,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:58:57,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-14 21:58:57,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:58:57,182 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 195 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:58:57,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328985661] [2020-10-14 21:58:57,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:58:57,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:58:57,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145654599] [2020-10-14 21:58:57,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:58:57,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:58:57,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:58:57,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:58:57,184 INFO L87 Difference]: Start difference. First operand 15709 states and 20321 transitions. Second operand 8 states. [2020-10-14 21:59:04,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:59:04,895 INFO L93 Difference]: Finished difference Result 30701 states and 39762 transitions. [2020-10-14 21:59:04,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:59:04,896 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 345 [2020-10-14 21:59:04,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:59:04,954 INFO L225 Difference]: With dead ends: 30701 [2020-10-14 21:59:04,955 INFO L226 Difference]: Without dead ends: 15316 [2020-10-14 21:59:04,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-14 21:59:05,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15316 states. [2020-10-14 21:59:05,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15316 to 15230. [2020-10-14 21:59:05,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15230 states. [2020-10-14 21:59:05,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15230 states to 15230 states and 18853 transitions. [2020-10-14 21:59:05,513 INFO L78 Accepts]: Start accepts. Automaton has 15230 states and 18853 transitions. Word has length 345 [2020-10-14 21:59:05,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:59:05,514 INFO L479 AbstractCegarLoop]: Abstraction has 15230 states and 18853 transitions. [2020-10-14 21:59:05,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:59:05,514 INFO L276 IsEmpty]: Start isEmpty. Operand 15230 states and 18853 transitions. [2020-10-14 21:59:05,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2020-10-14 21:59:05,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:59:05,545 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:59:05,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:59:05,546 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:59:05,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:59:05,547 INFO L82 PathProgramCache]: Analyzing trace with hash 2143134781, now seen corresponding path program 1 times [2020-10-14 21:59:05,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:59:05,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520246815] [2020-10-14 21:59:05,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:59:05,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:05,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:05,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:06,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:06,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:09,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:09,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:10,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:10,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 387 [2020-10-14 21:59:10,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 21:59:10,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 21:59:10,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:10,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:10,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:59:10,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 21:59:10,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 305 [2020-10-14 21:59:10,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:10,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:59:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:10,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:10,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:10,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:59:10,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:59:10,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:59:10,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:10,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:10,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:59:10,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:59:10,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:59:10,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:10,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:59:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:10,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:10,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:10,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:59:10,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:59:10,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 21:59:10,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:10,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:10,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:59:10,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:59:10,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 21:59:10,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:10,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 21:59:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:10,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:10,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:11,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:11,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-14 21:59:11,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:59:11,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-10-14 21:59:11,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:11,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:11,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:59:11,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:59:11,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 229 [2020-10-14 21:59:11,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:11,322 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-14 21:59:11,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520246815] [2020-10-14 21:59:11,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:59:11,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:59:11,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798398603] [2020-10-14 21:59:11,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:59:11,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:59:11,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:59:11,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:59:11,325 INFO L87 Difference]: Start difference. First operand 15230 states and 18853 transitions. Second operand 5 states. [2020-10-14 21:59:19,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:59:19,808 INFO L93 Difference]: Finished difference Result 34171 states and 43565 transitions. [2020-10-14 21:59:19,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:59:19,810 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 375 [2020-10-14 21:59:19,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:59:19,868 INFO L225 Difference]: With dead ends: 34171 [2020-10-14 21:59:19,868 INFO L226 Difference]: Without dead ends: 19253 [2020-10-14 21:59:19,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:59:19,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19253 states. [2020-10-14 21:59:20,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19253 to 18942. [2020-10-14 21:59:20,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18942 states. [2020-10-14 21:59:20,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18942 states to 18942 states and 23981 transitions. [2020-10-14 21:59:20,274 INFO L78 Accepts]: Start accepts. Automaton has 18942 states and 23981 transitions. Word has length 375 [2020-10-14 21:59:20,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:59:20,274 INFO L479 AbstractCegarLoop]: Abstraction has 18942 states and 23981 transitions. [2020-10-14 21:59:20,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:59:20,275 INFO L276 IsEmpty]: Start isEmpty. Operand 18942 states and 23981 transitions. [2020-10-14 21:59:20,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2020-10-14 21:59:20,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:59:20,311 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:59:20,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:59:20,311 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:59:20,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:59:20,312 INFO L82 PathProgramCache]: Analyzing trace with hash -523842019, now seen corresponding path program 1 times [2020-10-14 21:59:20,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:59:20,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90680991] [2020-10-14 21:59:20,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:59:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:20,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:20,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:20,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:21,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:22,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:23,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:25,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:25,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 389 [2020-10-14 21:59:25,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 21:59:25,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 21:59:25,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:25,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:25,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:59:25,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:59:25,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 317 [2020-10-14 21:59:25,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:25,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:59:25,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:25,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:25,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:25,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:59:25,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:59:25,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:59:25,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:25,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:25,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:59:25,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:59:25,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:59:25,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:25,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:59:25,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:25,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:25,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:25,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:25,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 21:59:25,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:59:25,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-14 21:59:25,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:25,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:25,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:59:25,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:59:25,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 21:59:25,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:25,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-14 21:59:25,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:25,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:26,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:26,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 21:59:26,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:59:26,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-14 21:59:26,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:26,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:26,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:59:26,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:59:26,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-14 21:59:26,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:26,201 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 21:59:26,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90680991] [2020-10-14 21:59:26,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:59:26,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 21:59:26,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588148779] [2020-10-14 21:59:26,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:59:26,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:59:26,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:59:26,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:59:26,203 INFO L87 Difference]: Start difference. First operand 18942 states and 23981 transitions. Second operand 8 states. [2020-10-14 21:59:35,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:59:35,964 INFO L93 Difference]: Finished difference Result 42901 states and 55403 transitions. [2020-10-14 21:59:35,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 21:59:35,966 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 377 [2020-10-14 21:59:35,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:59:36,044 INFO L225 Difference]: With dead ends: 42901 [2020-10-14 21:59:36,044 INFO L226 Difference]: Without dead ends: 23969 [2020-10-14 21:59:36,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-14 21:59:36,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23969 states. [2020-10-14 21:59:36,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23969 to 23612. [2020-10-14 21:59:36,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23612 states. [2020-10-14 21:59:36,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23612 states to 23612 states and 29036 transitions. [2020-10-14 21:59:36,475 INFO L78 Accepts]: Start accepts. Automaton has 23612 states and 29036 transitions. Word has length 377 [2020-10-14 21:59:36,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:59:36,475 INFO L479 AbstractCegarLoop]: Abstraction has 23612 states and 29036 transitions. [2020-10-14 21:59:36,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:59:36,475 INFO L276 IsEmpty]: Start isEmpty. Operand 23612 states and 29036 transitions. [2020-10-14 21:59:36,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2020-10-14 21:59:36,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:59:36,497 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:59:36,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 21:59:36,497 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:59:36,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:59:36,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1580835406, now seen corresponding path program 1 times [2020-10-14 21:59:36,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:59:36,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215312382] [2020-10-14 21:59:36,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:59:36,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:36,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:36,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:36,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:37,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:39,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:39,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 399 [2020-10-14 21:59:39,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:59:39,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3343 [2020-10-14 21:59:39,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:39,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:39,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:59:39,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-14 21:59:39,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 243 [2020-10-14 21:59:39,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:39,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:59:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:39,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:39,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:39,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:59:39,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:59:39,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:59:39,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:39,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:39,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:59:39,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:59:39,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:59:39,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:39,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:59:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:40,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:40,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:40,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:59:40,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:59:40,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 21:59:40,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:40,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:40,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:59:40,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:59:40,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 21:59:40,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:59:40,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 21:59:40,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:40,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:40,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:40,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:40,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:40,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-14 21:59:40,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:59:40,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 471 [2020-10-14 21:59:40,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:40,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:40,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:59:40,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:59:40,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-14 21:59:40,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:59:40,830 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 195 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:59:40,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215312382] [2020-10-14 21:59:40,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:59:40,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:59:40,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281338083] [2020-10-14 21:59:40,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:59:40,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:59:40,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:59:40,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:59:40,833 INFO L87 Difference]: Start difference. First operand 23612 states and 29036 transitions. Second operand 7 states. [2020-10-14 21:59:53,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:59:53,787 INFO L93 Difference]: Finished difference Result 54840 states and 71978 transitions. [2020-10-14 21:59:53,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:59:53,790 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 387 [2020-10-14 21:59:53,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:59:53,955 INFO L225 Difference]: With dead ends: 54840 [2020-10-14 21:59:53,955 INFO L226 Difference]: Without dead ends: 31234 [2020-10-14 21:59:54,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:59:54,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31234 states. [2020-10-14 21:59:54,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31234 to 30507. [2020-10-14 21:59:54,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30507 states. [2020-10-14 21:59:54,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30507 states to 30507 states and 37713 transitions. [2020-10-14 21:59:54,758 INFO L78 Accepts]: Start accepts. Automaton has 30507 states and 37713 transitions. Word has length 387 [2020-10-14 21:59:54,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:59:54,760 INFO L479 AbstractCegarLoop]: Abstraction has 30507 states and 37713 transitions. [2020-10-14 21:59:54,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:59:54,760 INFO L276 IsEmpty]: Start isEmpty. Operand 30507 states and 37713 transitions. [2020-10-14 21:59:54,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-10-14 21:59:54,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:59:54,789 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:59:54,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 21:59:54,790 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:59:54,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:59:54,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1355612414, now seen corresponding path program 1 times [2020-10-14 21:59:54,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:59:54,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228572635] [2020-10-14 21:59:54,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:59:54,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:59:54,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:54,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:55,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:55,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:59:59,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:59:59,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 479 [2020-10-14 21:59:59,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:59:59,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-14 21:59:59,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:59:59,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:59:59,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 21:59:59,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-14 21:59:59,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 334 [2020-10-14 21:59:59,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:00:00,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:00:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:00:00,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:00:00,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:00:00,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:00:00,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:00:00,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:00:00,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:00:00,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:00:00,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:00:00,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:00:00,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:00:00,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:00:00,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:00:00,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:00:00,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:00:00,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:00:00,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 22:00:00,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:00:00,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 22:00:00,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:00:00,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:00:00,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:00:00,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:00:00,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 22:00:00,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:00:00,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 22:00:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:00:00,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:00:00,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:00:00,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:00:00,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 22:00:00,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:00:00,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-14 22:00:00,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:00:00,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:00:00,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 22:00:00,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:00:00,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 22:00:00,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:00:00,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 22:00:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:00:00,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:00:00,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:00:01,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:00:01,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 22:00:01,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:00:01,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 503 [2020-10-14 22:00:01,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:00:01,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:00:01,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:00:01,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:00:01,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-14 22:00:01,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:00:01,324 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 361 proven. 18 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-14 22:00:01,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228572635] [2020-10-14 22:00:01,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:00:01,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 22:00:01,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087988762] [2020-10-14 22:00:01,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:00:01,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:00:01,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:00:01,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:00:01,326 INFO L87 Difference]: Start difference. First operand 30507 states and 37713 transitions. Second operand 10 states. [2020-10-14 22:00:35,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:00:35,019 INFO L93 Difference]: Finished difference Result 70391 states and 88284 transitions. [2020-10-14 22:00:35,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 22:00:35,021 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 465 [2020-10-14 22:00:35,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:00:35,128 INFO L225 Difference]: With dead ends: 70391 [2020-10-14 22:00:35,128 INFO L226 Difference]: Without dead ends: 35476 [2020-10-14 22:00:35,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2020-10-14 22:00:35,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35476 states. [2020-10-14 22:00:36,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35476 to 35114. [2020-10-14 22:00:36,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35114 states. [2020-10-14 22:00:36,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35114 states to 35114 states and 42060 transitions. [2020-10-14 22:00:36,294 INFO L78 Accepts]: Start accepts. Automaton has 35114 states and 42060 transitions. Word has length 465 [2020-10-14 22:00:36,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:00:36,297 INFO L479 AbstractCegarLoop]: Abstraction has 35114 states and 42060 transitions. [2020-10-14 22:00:36,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 22:00:36,297 INFO L276 IsEmpty]: Start isEmpty. Operand 35114 states and 42060 transitions. [2020-10-14 22:00:36,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2020-10-14 22:00:36,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:00:36,332 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:00:36,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 22:00:36,333 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:00:36,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:00:36,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1414941130, now seen corresponding path program 1 times [2020-10-14 22:00:36,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:00:36,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241426710] [2020-10-14 22:00:36,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:00:36,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:00:36,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:00:36,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:00:36,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:00:36,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:00:40,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:00:41,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:00:41,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 490 [2020-10-14 22:00:41,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:00:41,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 22:00:41,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:00:41,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:00:41,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:00:41,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 22:00:41,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 314 [2020-10-14 22:00:41,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:00:41,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:00:41,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:00:41,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:00:41,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:00:41,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:00:41,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:00:41,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:00:41,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:00:41,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:00:41,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:00:41,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:00:41,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:00:41,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:00:41,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:00:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:00:41,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:00:41,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:00:41,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 22:00:41,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:00:41,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 22:00:41,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:00:41,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:00:41,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:00:41,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:00:41,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 22:00:41,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:00:41,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-14 22:00:41,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:00:41,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:00:41,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:00:41,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:00:41,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 22:00:41,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:00:41,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-14 22:00:41,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:00:41,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:00:41,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:00:41,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:00:41,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 22:00:41,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:00:41,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-10-14 22:00:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:00:41,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:00:42,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:00:42,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 22:00:42,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:00:42,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-14 22:00:42,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:00:42,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:00:42,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:00:42,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:00:42,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-14 22:00:42,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:00:42,341 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 369 proven. 4 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-14 22:00:42,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241426710] [2020-10-14 22:00:42,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:00:42,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:00:42,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554391281] [2020-10-14 22:00:42,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:00:42,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:00:42,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:00:42,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:00:42,345 INFO L87 Difference]: Start difference. First operand 35114 states and 42060 transitions. Second operand 7 states.