/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/Problem12_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:06:26,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:06:26,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:06:26,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:06:26,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:06:26,678 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:06:26,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:06:26,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:06:26,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:06:26,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:06:26,685 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:06:26,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:06:26,686 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:06:26,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:06:26,688 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:06:26,689 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:06:26,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:06:26,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:06:26,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:06:26,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:06:26,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:06:26,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:06:26,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:06:26,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:06:26,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:06:26,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:06:26,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:06:26,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:06:26,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:06:26,705 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:06:26,705 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:06:26,706 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:06:26,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:06:26,707 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:06:26,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:06:26,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:06:26,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:06:26,709 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:06:26,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:06:26,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:06:26,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:06:26,712 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 21:06:26,735 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:06:26,735 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:06:26,736 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:06:26,736 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:06:26,737 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:06:26,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:06:26,737 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:06:26,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:06:26,737 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:06:26,737 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:06:26,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:06:26,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:06:26,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:06:26,738 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:06:26,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:06:26,739 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:06:26,739 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:06:26,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:06:26,739 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:06:26,739 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:06:26,740 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:06:26,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:06:26,740 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:06:26,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:06:26,740 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:06:26,741 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:06:26,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:06:26,741 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:06:26,741 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:06:26,741 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 21:06:27,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:06:27,107 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:06:27,111 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:06:27,114 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:06:27,115 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:06:27,115 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label05.c [2020-10-14 21:06:27,196 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/15abe9444/95c0267248814f2690b6c45f5ebae3a8/FLAG15a21f43e [2020-10-14 21:06:27,935 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:06:27,936 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label05.c [2020-10-14 21:06:27,964 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/15abe9444/95c0267248814f2690b6c45f5ebae3a8/FLAG15a21f43e [2020-10-14 21:06:28,015 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/15abe9444/95c0267248814f2690b6c45f5ebae3a8 [2020-10-14 21:06:28,026 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:06:28,028 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:06:28,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:06:28,030 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:06:28,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:06:28,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:06:28" (1/1) ... [2020-10-14 21:06:28,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dd452c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:28, skipping insertion in model container [2020-10-14 21:06:28,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:06:28" (1/1) ... [2020-10-14 21:06:28,047 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:06:28,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:06:29,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:06:29,788 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:06:30,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:06:30,618 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:06:30,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:30 WrapperNode [2020-10-14 21:06:30,619 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:06:30,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:06:30,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:06:30,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:06:30,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:30" (1/1) ... [2020-10-14 21:06:30,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:30" (1/1) ... [2020-10-14 21:06:30,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:30" (1/1) ... [2020-10-14 21:06:30,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:30" (1/1) ... [2020-10-14 21:06:30,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:30" (1/1) ... [2020-10-14 21:06:30,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:30" (1/1) ... [2020-10-14 21:06:30,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:30" (1/1) ... [2020-10-14 21:06:30,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:06:30,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:06:30,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:06:30,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:06:30,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:30" (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 21:06:30,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:06:30,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:06:30,976 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:06:30,976 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:06:30,976 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:06:30,976 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:06:30,976 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:06:30,976 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:06:30,977 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:06:30,977 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:06:30,977 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:06:30,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:06:30,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:06:30,978 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:06:30,978 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:06:30,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:06:30,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:06:36,094 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:06:36,095 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:06:36,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:06:36 BoogieIcfgContainer [2020-10-14 21:06:36,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:06:36,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:06:36,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:06:36,119 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:06:36,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:06:28" (1/3) ... [2020-10-14 21:06:36,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b0957be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:06:36, skipping insertion in model container [2020-10-14 21:06:36,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:30" (2/3) ... [2020-10-14 21:06:36,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b0957be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:06:36, skipping insertion in model container [2020-10-14 21:06:36,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:06:36" (3/3) ... [2020-10-14 21:06:36,126 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label05.c [2020-10-14 21:06:36,138 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:06:36,150 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:06:36,165 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:06:36,196 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:06:36,197 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:06:36,197 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:06:36,197 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:06:36,197 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:06:36,197 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:06:36,197 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:06:36,197 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:06:36,244 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 21:06:36,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 21:06:36,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:06:36,261 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] [2020-10-14 21:06:36,261 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:06:36,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:06:36,269 INFO L82 PathProgramCache]: Analyzing trace with hash 31716538, now seen corresponding path program 1 times [2020-10-14 21:06:36,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:06:36,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181235727] [2020-10-14 21:06:36,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:06:36,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:36,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:36,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:36,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 21:06:36,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:36,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 485 [2020-10-14 21:06:36,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:36,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:36,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:06:36,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:06:36,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 21:06:36,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:06:37,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:06:37,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:37,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:37,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:37,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:06:37,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:37,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 21:06:37,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:37,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:37,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:06:37,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:37,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:06:37,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:06:37,186 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 21:06:37,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181235727] [2020-10-14 21:06:37,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:06:37,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 21:06:37,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451750233] [2020-10-14 21:06:37,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:06:37,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:06:37,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:06:37,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:06:37,219 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 5 states. [2020-10-14 21:06:50,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:06:50,120 INFO L93 Difference]: Finished difference Result 3253 states and 6294 transitions. [2020-10-14 21:06:50,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:06:50,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-14 21:06:50,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:06:50,158 INFO L225 Difference]: With dead ends: 3253 [2020-10-14 21:06:50,159 INFO L226 Difference]: Without dead ends: 2346 [2020-10-14 21:06:50,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:06:50,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2020-10-14 21:06:50,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 2331. [2020-10-14 21:06:50,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2331 states. [2020-10-14 21:06:50,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 3787 transitions. [2020-10-14 21:06:50,369 INFO L78 Accepts]: Start accepts. Automaton has 2331 states and 3787 transitions. Word has length 65 [2020-10-14 21:06:50,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:06:50,370 INFO L479 AbstractCegarLoop]: Abstraction has 2331 states and 3787 transitions. [2020-10-14 21:06:50,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:06:50,371 INFO L276 IsEmpty]: Start isEmpty. Operand 2331 states and 3787 transitions. [2020-10-14 21:06:50,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-14 21:06:50,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:06:50,379 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, 1, 1, 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 21:06:50,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:06:50,379 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:06:50,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:06:50,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1960620333, now seen corresponding path program 1 times [2020-10-14 21:06:50,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:06:50,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656984435] [2020-10-14 21:06:50,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:06:50,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:50,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:50,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:50,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:51,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:51,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:06:51,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:06:51,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1243 [2020-10-14 21:06:51,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:51,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:51,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:06:51,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:06:51,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:06:51,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 21:06:51,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:06:51,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:51,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:51,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:51,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:06:51,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:51,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:06:51,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:51,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:51,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:06:51,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:06:51,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:06:51,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:06:51,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:06:51,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:51,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:06:51,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:06:51,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:06:51,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:06:51,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-14 21:06:51,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:06:51,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:06:51,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:06:51,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:06:51,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:06:51,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:06:52,144 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:06:52,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656984435] [2020-10-14 21:06:52,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:06:52,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:06:52,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988729772] [2020-10-14 21:06:52,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:06:52,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:06:52,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:06:52,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:06:52,150 INFO L87 Difference]: Start difference. First operand 2331 states and 3787 transitions. Second operand 6 states. [2020-10-14 21:07:02,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:07:02,469 INFO L93 Difference]: Finished difference Result 7032 states and 11519 transitions. [2020-10-14 21:07:02,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:07:02,471 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2020-10-14 21:07:02,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:07:02,498 INFO L225 Difference]: With dead ends: 7032 [2020-10-14 21:07:02,499 INFO L226 Difference]: Without dead ends: 4707 [2020-10-14 21:07:02,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 2 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 21:07:02,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4707 states. [2020-10-14 21:07:02,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4707 to 4689. [2020-10-14 21:07:02,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4689 states. [2020-10-14 21:07:02,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4689 states to 4689 states and 6704 transitions. [2020-10-14 21:07:02,643 INFO L78 Accepts]: Start accepts. Automaton has 4689 states and 6704 transitions. Word has length 140 [2020-10-14 21:07:02,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:07:02,644 INFO L479 AbstractCegarLoop]: Abstraction has 4689 states and 6704 transitions. [2020-10-14 21:07:02,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:07:02,645 INFO L276 IsEmpty]: Start isEmpty. Operand 4689 states and 6704 transitions. [2020-10-14 21:07:02,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-14 21:07:02,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:07:02,648 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, 1, 1, 1, 1, 1, 1, 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 21:07:02,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:07:02,649 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:07:02,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:07:02,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1024745371, now seen corresponding path program 1 times [2020-10-14 21:07:02,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:07:02,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509379114] [2020-10-14 21:07:02,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:07:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:02,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:02,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:03,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:04,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:04,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 21:07:04,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:07:04,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1510 [2020-10-14 21:07:04,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:04,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:04,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:07:04,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:07:04,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-14 21:07:04,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:04,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:07:04,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:04,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:04,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:04,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:07:04,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:04,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 21:07:04,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:04,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:04,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:04,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:04,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:07:04,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:04,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:07:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:04,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:04,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:04,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:04,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 21:07:04,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:07:04,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-14 21:07:04,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:04,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:04,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:04,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:04,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 21:07:04,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:04,701 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:07:04,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509379114] [2020-10-14 21:07:04,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:07:04,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:07:04,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138421665] [2020-10-14 21:07:04,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:07:04,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:07:04,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:07:04,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:07:04,708 INFO L87 Difference]: Start difference. First operand 4689 states and 6704 transitions. Second operand 7 states. [2020-10-14 21:07:18,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:07:18,978 INFO L93 Difference]: Finished difference Result 18728 states and 27699 transitions. [2020-10-14 21:07:18,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:07:18,980 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2020-10-14 21:07:18,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:07:19,072 INFO L225 Difference]: With dead ends: 18728 [2020-10-14 21:07:19,072 INFO L226 Difference]: Without dead ends: 14045 [2020-10-14 21:07:19,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-14 21:07:19,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14045 states. [2020-10-14 21:07:19,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14045 to 14026. [2020-10-14 21:07:19,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14026 states. [2020-10-14 21:07:19,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14026 states to 14026 states and 19764 transitions. [2020-10-14 21:07:19,629 INFO L78 Accepts]: Start accepts. Automaton has 14026 states and 19764 transitions. Word has length 144 [2020-10-14 21:07:19,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:07:19,630 INFO L479 AbstractCegarLoop]: Abstraction has 14026 states and 19764 transitions. [2020-10-14 21:07:19,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:07:19,631 INFO L276 IsEmpty]: Start isEmpty. Operand 14026 states and 19764 transitions. [2020-10-14 21:07:19,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 21:07:19,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:07:19,635 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:07:19,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:07:19,635 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:07:19,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:07:19,636 INFO L82 PathProgramCache]: Analyzing trace with hash 689069255, now seen corresponding path program 1 times [2020-10-14 21:07:19,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:07:19,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297071422] [2020-10-14 21:07:19,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:07:19,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:19,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:19,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:20,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:20,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 21:07:20,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:07:20,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 877 [2020-10-14 21:07:20,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:20,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:20,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:07:20,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:07:20,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 21:07:20,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:20,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:07:20,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:20,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:20,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:20,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:07:20,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:20,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:07:20,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:20,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:20,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:20,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:20,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:07:20,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:20,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:07:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:20,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:20,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:20,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 21:07:20,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:20,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-14 21:07:20,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:20,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:20,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:20,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:07:20,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 21:07:20,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:20,984 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:07:20,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297071422] [2020-10-14 21:07:20,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:07:20,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:07:20,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191852781] [2020-10-14 21:07:20,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:07:20,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:07:20,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:07:20,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:07:20,992 INFO L87 Difference]: Start difference. First operand 14026 states and 19764 transitions. Second operand 7 states. [2020-10-14 21:07:35,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:07:35,440 INFO L93 Difference]: Finished difference Result 40147 states and 59176 transitions. [2020-10-14 21:07:35,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:07:35,441 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 150 [2020-10-14 21:07:35,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:07:35,567 INFO L225 Difference]: With dead ends: 40147 [2020-10-14 21:07:35,568 INFO L226 Difference]: Without dead ends: 26127 [2020-10-14 21:07:35,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:07:35,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26127 states. [2020-10-14 21:07:36,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26127 to 23713. [2020-10-14 21:07:36,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23713 states. [2020-10-14 21:07:36,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23713 states to 23713 states and 33358 transitions. [2020-10-14 21:07:36,594 INFO L78 Accepts]: Start accepts. Automaton has 23713 states and 33358 transitions. Word has length 150 [2020-10-14 21:07:36,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:07:36,595 INFO L479 AbstractCegarLoop]: Abstraction has 23713 states and 33358 transitions. [2020-10-14 21:07:36,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:07:36,595 INFO L276 IsEmpty]: Start isEmpty. Operand 23713 states and 33358 transitions. [2020-10-14 21:07:36,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-14 21:07:36,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:07:36,602 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:07:36,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:07:36,603 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:07:36,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:07:36,603 INFO L82 PathProgramCache]: Analyzing trace with hash -458587585, now seen corresponding path program 1 times [2020-10-14 21:07:36,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:07:36,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029422088] [2020-10-14 21:07:36,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:07:36,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:36,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:36,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:37,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:37,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-14 21:07:37,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:07:37,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1249 [2020-10-14 21:07:37,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:37,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:37,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:07:37,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:07:37,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-14 21:07:37,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:37,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:07:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:37,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:37,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:37,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:07:37,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:37,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:07:38,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:38,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:38,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:38,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:38,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:07:38,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:38,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:07:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:38,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:38,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:38,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 21:07:38,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:38,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-14 21:07:38,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:38,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:38,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:38,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:07:38,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 21:07:38,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:38,427 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:07:38,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029422088] [2020-10-14 21:07:38,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:07:38,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:07:38,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144490215] [2020-10-14 21:07:38,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:07:38,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:07:38,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:07:38,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:07:38,430 INFO L87 Difference]: Start difference. First operand 23713 states and 33358 transitions. Second operand 7 states. [2020-10-14 21:07:54,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:07:54,270 INFO L93 Difference]: Finished difference Result 65549 states and 99254 transitions. [2020-10-14 21:07:54,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:07:54,272 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 178 [2020-10-14 21:07:54,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:07:54,506 INFO L225 Difference]: With dead ends: 65549 [2020-10-14 21:07:54,507 INFO L226 Difference]: Without dead ends: 41842 [2020-10-14 21:07:54,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:07:54,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41842 states. [2020-10-14 21:07:55,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41842 to 40887. [2020-10-14 21:07:55,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40887 states. [2020-10-14 21:07:55,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40887 states to 40887 states and 59423 transitions. [2020-10-14 21:07:55,874 INFO L78 Accepts]: Start accepts. Automaton has 40887 states and 59423 transitions. Word has length 178 [2020-10-14 21:07:55,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:07:55,874 INFO L479 AbstractCegarLoop]: Abstraction has 40887 states and 59423 transitions. [2020-10-14 21:07:55,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:07:55,875 INFO L276 IsEmpty]: Start isEmpty. Operand 40887 states and 59423 transitions. [2020-10-14 21:07:55,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-14 21:07:55,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:07:55,880 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, 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] [2020-10-14 21:07:55,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:07:55,881 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:07:55,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:07:55,881 INFO L82 PathProgramCache]: Analyzing trace with hash 244374263, now seen corresponding path program 1 times [2020-10-14 21:07:55,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:07:55,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448538189] [2020-10-14 21:07:55,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:07:55,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:55,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:56,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:56,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:56,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:57,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:57,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-14 21:07:57,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:07:57,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1274 [2020-10-14 21:07:57,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:57,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:57,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:57,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 21:07:57,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 21:07:57,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:57,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:07:57,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:57,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:57,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:57,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:07:57,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:57,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:07:57,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:57,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:57,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:07:57,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:57,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:07:57,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:57,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:07:57,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:57,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:57,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:57,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:07:57,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:57,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 21:07:57,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:57,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:57,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:57,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:57,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:07:57,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:57,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 21:07:57,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:57,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:57,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:57,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:07:57,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:57,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-14 21:07:57,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:57,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:57,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:57,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:07:57,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 21:07:57,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:58,070 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:07:58,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448538189] [2020-10-14 21:07:58,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:07:58,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:07:58,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870697028] [2020-10-14 21:07:58,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:07:58,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:07:58,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:07:58,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:07:58,074 INFO L87 Difference]: Start difference. First operand 40887 states and 59423 transitions. Second operand 7 states. [2020-10-14 21:08:18,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:08:18,618 INFO L93 Difference]: Finished difference Result 85712 states and 130868 transitions. [2020-10-14 21:08:18,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:08:18,620 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 240 [2020-10-14 21:08:18,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:08:18,848 INFO L225 Difference]: With dead ends: 85712 [2020-10-14 21:08:18,848 INFO L226 Difference]: Without dead ends: 40085 [2020-10-14 21:08:18,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 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 21:08:18,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40085 states. [2020-10-14 21:08:19,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40085 to 39663. [2020-10-14 21:08:19,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39663 states. [2020-10-14 21:08:20,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39663 states to 39663 states and 52772 transitions. [2020-10-14 21:08:20,067 INFO L78 Accepts]: Start accepts. Automaton has 39663 states and 52772 transitions. Word has length 240 [2020-10-14 21:08:20,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:08:20,067 INFO L479 AbstractCegarLoop]: Abstraction has 39663 states and 52772 transitions. [2020-10-14 21:08:20,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:08:20,068 INFO L276 IsEmpty]: Start isEmpty. Operand 39663 states and 52772 transitions. [2020-10-14 21:08:20,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-10-14 21:08:20,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:08:20,074 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:08:20,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:08:20,074 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:08:20,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:08:20,075 INFO L82 PathProgramCache]: Analyzing trace with hash -957532405, now seen corresponding path program 1 times [2020-10-14 21:08:20,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:08:20,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898543222] [2020-10-14 21:08:20,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:08:20,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:20,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:20,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:21,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:23,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:23,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-14 21:08:23,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:08:23,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2867 [2020-10-14 21:08:23,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:23,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:23,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:08:23,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:08:23,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-14 21:08:23,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:23,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:08:23,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:23,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:23,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:23,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:08:23,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:23,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 21:08:23,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:23,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:23,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:08:23,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:23,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:08:23,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:23,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:08:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:23,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:23,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:23,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 21:08:23,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:23,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-10-14 21:08:23,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:23,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:23,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:08:23,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:08:23,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-14 21:08:23,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:24,402 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:08:24,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898543222] [2020-10-14 21:08:24,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:08:24,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:08:24,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687166749] [2020-10-14 21:08:24,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:08:24,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:08:24,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:08:24,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:08:24,407 INFO L87 Difference]: Start difference. First operand 39663 states and 52772 transitions. Second operand 7 states. [2020-10-14 21:08:26,864 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-10-14 21:08:39,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:08:39,537 INFO L93 Difference]: Finished difference Result 65883 states and 90943 transitions. [2020-10-14 21:08:39,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:08:39,539 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 264 [2020-10-14 21:08:39,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:08:39,676 INFO L225 Difference]: With dead ends: 65883 [2020-10-14 21:08:39,676 INFO L226 Difference]: Without dead ends: 26993 [2020-10-14 21:08:39,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:08:39,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26993 states. [2020-10-14 21:08:40,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26993 to 26437. [2020-10-14 21:08:40,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26437 states. [2020-10-14 21:08:40,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26437 states to 26437 states and 36672 transitions. [2020-10-14 21:08:40,830 INFO L78 Accepts]: Start accepts. Automaton has 26437 states and 36672 transitions. Word has length 264 [2020-10-14 21:08:40,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:08:40,834 INFO L479 AbstractCegarLoop]: Abstraction has 26437 states and 36672 transitions. [2020-10-14 21:08:40,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:08:40,834 INFO L276 IsEmpty]: Start isEmpty. Operand 26437 states and 36672 transitions. [2020-10-14 21:08:40,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-14 21:08:40,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:08:40,840 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, 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] [2020-10-14 21:08:40,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:08:40,841 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:08:40,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:08:40,841 INFO L82 PathProgramCache]: Analyzing trace with hash 776816110, now seen corresponding path program 1 times [2020-10-14 21:08:40,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:08:40,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95664147] [2020-10-14 21:08:40,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:08:40,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:40,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:41,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:41,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:42,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:42,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:42,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-10-14 21:08:42,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:08:42,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1760 [2020-10-14 21:08:42,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:42,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:42,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:08:42,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 21:08:42,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 21:08:42,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:08:42,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:08:42,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:42,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:42,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:42,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:08:42,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:42,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:08:42,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:42,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:42,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:08:42,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:42,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:08:42,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:42,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:08:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:42,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:43,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:43,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:08:43,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:43,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-14 21:08:43,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:43,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:43,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:08:43,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:43,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:08:43,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:43,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:08:43,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:43,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:43,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:43,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:43,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:08:43,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:08:43,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-14 21:08:43,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:43,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:43,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:08:43,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:43,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:08:43,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:43,502 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-14 21:08:43,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95664147] [2020-10-14 21:08:43,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:08:43,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:08:43,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178298390] [2020-10-14 21:08:43,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:08:43,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:08:43,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:08:43,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:08:43,505 INFO L87 Difference]: Start difference. First operand 26437 states and 36672 transitions. Second operand 6 states. [2020-10-14 21:09:14,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:09:14,227 INFO L93 Difference]: Finished difference Result 95238 states and 141434 transitions. [2020-10-14 21:09:14,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:09:14,232 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 285 [2020-10-14 21:09:14,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:09:14,569 INFO L225 Difference]: With dead ends: 95238 [2020-10-14 21:09:14,570 INFO L226 Difference]: Without dead ends: 68688 [2020-10-14 21:09:14,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:09:14,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68688 states. [2020-10-14 21:09:16,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68688 to 68637. [2020-10-14 21:09:16,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68637 states. [2020-10-14 21:09:16,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68637 states to 68637 states and 91004 transitions. [2020-10-14 21:09:16,498 INFO L78 Accepts]: Start accepts. Automaton has 68637 states and 91004 transitions. Word has length 285 [2020-10-14 21:09:16,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:09:16,499 INFO L479 AbstractCegarLoop]: Abstraction has 68637 states and 91004 transitions. [2020-10-14 21:09:16,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:09:16,499 INFO L276 IsEmpty]: Start isEmpty. Operand 68637 states and 91004 transitions. [2020-10-14 21:09:16,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-14 21:09:16,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:09:16,509 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:09:16,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:09:16,510 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:09:16,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:09:16,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1919793202, now seen corresponding path program 1 times [2020-10-14 21:09:16,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:09:16,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562448794] [2020-10-14 21:09:16,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:09:16,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:16,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:16,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:19,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:19,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-14 21:09:19,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:09:19,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3338 [2020-10-14 21:09:19,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:19,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:19,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:09:19,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:09:19,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 254 [2020-10-14 21:09:19,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:09:20,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:09:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:20,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:20,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:20,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:09:20,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:20,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:09:20,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:20,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:20,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:09:20,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:09:20,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:09:20,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:20,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:09:20,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:20,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:20,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:20,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:20,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:09:20,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:09:20,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-10-14 21:09:20,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:20,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:20,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:09:20,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:09:20,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:09:20,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:20,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:09:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:20,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:20,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:20,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 21:09:20,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:20,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-14 21:09:20,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:20,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:20,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:09:20,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:09:20,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 21:09:20,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:21,049 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 207 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 21:09:21,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562448794] [2020-10-14 21:09:21,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:09:21,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:09:21,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11676364] [2020-10-14 21:09:21,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:09:21,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:09:21,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:09:21,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:09:21,061 INFO L87 Difference]: Start difference. First operand 68637 states and 91004 transitions. Second operand 7 states. [2020-10-14 21:09:44,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:09:44,748 INFO L93 Difference]: Finished difference Result 136757 states and 182346 transitions. [2020-10-14 21:09:44,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:09:44,751 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 311 [2020-10-14 21:09:44,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:09:45,061 INFO L225 Difference]: With dead ends: 136757 [2020-10-14 21:09:45,061 INFO L226 Difference]: Without dead ends: 68893 [2020-10-14 21:09:45,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:09:45,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68893 states. [2020-10-14 21:09:46,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68893 to 63429. [2020-10-14 21:09:46,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63429 states. [2020-10-14 21:09:46,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63429 states to 63429 states and 77014 transitions. [2020-10-14 21:09:46,369 INFO L78 Accepts]: Start accepts. Automaton has 63429 states and 77014 transitions. Word has length 311 [2020-10-14 21:09:46,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:09:46,370 INFO L479 AbstractCegarLoop]: Abstraction has 63429 states and 77014 transitions. [2020-10-14 21:09:46,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:09:46,370 INFO L276 IsEmpty]: Start isEmpty. Operand 63429 states and 77014 transitions. [2020-10-14 21:09:46,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2020-10-14 21:09:46,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:09:46,381 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, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:09:46,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:09:46,382 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:09:46,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:09:46,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1936906039, now seen corresponding path program 1 times [2020-10-14 21:09:46,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:09:46,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408208536] [2020-10-14 21:09:46,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:09:46,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:46,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:46,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:48,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:49,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:49,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 414 [2020-10-14 21:09:49,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:09:49,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2904 [2020-10-14 21:09:49,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:49,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:49,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:09:49,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-14 21:09:49,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-14 21:09:49,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:49,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:09:49,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:49,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:49,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:49,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:09:49,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:49,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:09:49,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:49,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:49,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:09:49,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:09:49,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:09:49,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:49,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:09:49,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:49,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:49,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:49,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:09:49,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:49,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-14 21:09:49,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:49,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:49,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:09:49,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:09:49,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:09:49,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:49,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:09:49,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:49,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:49,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:50,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:50,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:09:50,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:09:50,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-14 21:09:50,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:50,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:50,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:09:50,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:09:50,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 21:09:50,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:50,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-14 21:09:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:50,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:50,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:50,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 21:09:50,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:50,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-14 21:09:50,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:50,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:50,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:09:50,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:09:50,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 21:09:50,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:50,508 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 354 proven. 4 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-14 21:09:50,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408208536] [2020-10-14 21:09:50,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:09:50,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:09:50,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705959593] [2020-10-14 21:09:50,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:09:50,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:09:50,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:09:50,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:09:50,512 INFO L87 Difference]: Start difference. First operand 63429 states and 77014 transitions. Second operand 7 states.