/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_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:19:15,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:19:15,024 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:19:15,068 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:19:15,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:19:15,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:19:15,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:19:15,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:19:15,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:19:15,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:19:15,093 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:19:15,094 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:19:15,095 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:19:15,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:19:15,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:19:15,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:19:15,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:19:15,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:19:15,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:19:15,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:19:15,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:19:15,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:19:15,118 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:19:15,118 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:19:15,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:19:15,123 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:19:15,123 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:19:15,124 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:19:15,124 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:19:15,125 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:19:15,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:19:15,126 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:19:15,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:19:15,128 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:19:15,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:19:15,129 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:19:15,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:19:15,129 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:19:15,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:19:15,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:19:15,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:19:15,132 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 21:19:15,158 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:19:15,158 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:19:15,160 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:19:15,160 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:19:15,160 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:19:15,161 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:19:15,161 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:19:15,161 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:19:15,161 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:19:15,161 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:19:15,162 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:19:15,162 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:19:15,162 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:19:15,162 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:19:15,162 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:19:15,163 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:19:15,163 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:19:15,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:19:15,163 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:19:15,164 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:19:15,164 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:19:15,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:19:15,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:19:15,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:19:15,165 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:19:15,165 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:19:15,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:19:15,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:19:15,165 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:19:15,166 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 21:19:15,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:19:15,483 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:19:15,487 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:19:15,488 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:19:15,489 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:19:15,490 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label54.c [2020-10-14 21:19:15,578 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cb43b1c97/e9f04b6fc4c448d1be718d86c69b8b63/FLAGc2f26eeca [2020-10-14 21:19:16,302 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:19:16,303 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label54.c [2020-10-14 21:19:16,335 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cb43b1c97/e9f04b6fc4c448d1be718d86c69b8b63/FLAGc2f26eeca [2020-10-14 21:19:16,466 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cb43b1c97/e9f04b6fc4c448d1be718d86c69b8b63 [2020-10-14 21:19:16,478 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:19:16,480 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:19:16,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:19:16,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:19:16,488 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:19:16,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:19:16" (1/1) ... [2020-10-14 21:19:16,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@91f500f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:19:16, skipping insertion in model container [2020-10-14 21:19:16,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:19:16" (1/1) ... [2020-10-14 21:19:16,504 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:19:16,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:19:18,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:19:18,085 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:19:18,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:19:18,802 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:19:18,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:19:18 WrapperNode [2020-10-14 21:19:18,805 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:19:18,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:19:18,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:19:18,806 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:19:18,823 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:19:18" (1/1) ... [2020-10-14 21:19:18,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:19:18" (1/1) ... [2020-10-14 21:19:18,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:19:18" (1/1) ... [2020-10-14 21:19:18,890 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:19:18" (1/1) ... [2020-10-14 21:19:19,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:19:18" (1/1) ... [2020-10-14 21:19:19,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:19:18" (1/1) ... [2020-10-14 21:19:19,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:19:18" (1/1) ... [2020-10-14 21:19:19,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:19:19,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:19:19,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:19:19,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:19:19,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:19:18" (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 21:19:19,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:19:19,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:19:19,235 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:19:19,235 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:19:19,235 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:19:19,235 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:19:19,235 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:19:19,235 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:19:19,236 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:19:19,236 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:19:19,236 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:19:19,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:19:19,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:19:19,237 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:19:19,237 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:19:19,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:19:19,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:19:24,183 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:19:24,184 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:19:24,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:19:24 BoogieIcfgContainer [2020-10-14 21:19:24,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:19:24,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:19:24,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:19:24,209 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:19:24,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:19:16" (1/3) ... [2020-10-14 21:19:24,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ed2df93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:19:24, skipping insertion in model container [2020-10-14 21:19:24,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:19:18" (2/3) ... [2020-10-14 21:19:24,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ed2df93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:19:24, skipping insertion in model container [2020-10-14 21:19:24,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:19:24" (3/3) ... [2020-10-14 21:19:24,213 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label54.c [2020-10-14 21:19:24,225 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:19:24,235 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:19:24,253 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:19:24,310 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:19:24,311 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:19:24,311 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:19:24,311 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:19:24,311 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:19:24,311 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:19:24,311 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:19:24,312 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:19:24,365 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 21:19:24,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 21:19:24,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:19:24,376 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] [2020-10-14 21:19:24,376 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:19:24,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:19:24,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1843653234, now seen corresponding path program 1 times [2020-10-14 21:19:24,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:19:24,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881303161] [2020-10-14 21:19:24,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:19:24,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:24,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:25,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:25,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 21:19:25,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:19:25,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 498 [2020-10-14 21:19:25,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:25,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:25,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:19:25,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:19:25,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 21:19:25,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:19:25,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:19:25,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:25,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:25,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:25,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:19:25,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:19:25,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 21:19:25,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:25,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:25,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:19:25,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:19:25,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:19:25,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:25,238 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 21:19:25,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [881303161] [2020-10-14 21:19:25,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:19:25,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 21:19:25,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104041580] [2020-10-14 21:19:25,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:19:25,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:19:25,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:19:25,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:19:25,274 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 5 states. [2020-10-14 21:19:33,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:19:33,935 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-14 21:19:33,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:19:33,937 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-10-14 21:19:33,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:19:34,006 INFO L225 Difference]: With dead ends: 2471 [2020-10-14 21:19:34,006 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 21:19:34,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:19:34,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 21:19:34,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-14 21:19:34,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-14 21:19:34,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2521 transitions. [2020-10-14 21:19:34,292 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2521 transitions. Word has length 39 [2020-10-14 21:19:34,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:19:34,294 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2521 transitions. [2020-10-14 21:19:34,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:19:34,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2521 transitions. [2020-10-14 21:19:34,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 21:19:34,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:19:34,304 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:34,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:19:34,305 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:19:34,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:19:34,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1602190379, now seen corresponding path program 1 times [2020-10-14 21:19:34,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:19:34,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047198839] [2020-10-14 21:19:34,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:19:34,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:34,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:34,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:35,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:35,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 21:19:35,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:19:35,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1020 [2020-10-14 21:19:35,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:35,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:35,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:19:35,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:19:35,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-14 21:19:35,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:19:35,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:19:35,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:35,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:35,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:35,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:19:35,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:19:35,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:19:35,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:35,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:35,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:19:35,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:19:35,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:19:35,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:35,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:19:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:35,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:35,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:35,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:19:35,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:19:35,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-14 21:19:35,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:35,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:35,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:19:35,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:19:35,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:19:35,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:35,798 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:19:35,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047198839] [2020-10-14 21:19:35,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:19:35,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:19:35,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105459362] [2020-10-14 21:19:35,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:19:35,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:19:35,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:19:35,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:19:35,803 INFO L87 Difference]: Start difference. First operand 1553 states and 2521 transitions. Second operand 6 states. [2020-10-14 21:19:46,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:19:46,016 INFO L93 Difference]: Finished difference Result 4690 states and 7651 transitions. [2020-10-14 21:19:46,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:19:46,018 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2020-10-14 21:19:46,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:19:46,035 INFO L225 Difference]: With dead ends: 4690 [2020-10-14 21:19:46,035 INFO L226 Difference]: Without dead ends: 3143 [2020-10-14 21:19:46,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:19:46,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3143 states. [2020-10-14 21:19:46,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3143 to 3125. [2020-10-14 21:19:46,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3125 states. [2020-10-14 21:19:46,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3125 states to 3125 states and 4443 transitions. [2020-10-14 21:19:46,128 INFO L78 Accepts]: Start accepts. Automaton has 3125 states and 4443 transitions. Word has length 114 [2020-10-14 21:19:46,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:19:46,129 INFO L479 AbstractCegarLoop]: Abstraction has 3125 states and 4443 transitions. [2020-10-14 21:19:46,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:19:46,129 INFO L276 IsEmpty]: Start isEmpty. Operand 3125 states and 4443 transitions. [2020-10-14 21:19:46,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 21:19:46,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:19:46,132 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:46,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:19:46,133 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:19:46,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:19:46,133 INFO L82 PathProgramCache]: Analyzing trace with hash 271828723, now seen corresponding path program 1 times [2020-10-14 21:19:46,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:19:46,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188875157] [2020-10-14 21:19:46,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:19:46,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:46,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:46,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:47,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:47,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 21:19:47,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:19:47,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-10-14 21:19:47,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:47,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:47,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:19:47,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:19:47,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 21:19:47,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:47,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:19:47,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:47,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:47,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:47,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:19:47,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:19:47,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:19:47,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:47,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:47,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:19:47,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:19:47,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:19:47,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:47,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:19:47,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:47,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:47,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:47,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 21:19:47,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:19:47,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-14 21:19:47,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:47,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:47,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:19:47,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:19:47,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 21:19:47,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:47,697 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:19:47,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188875157] [2020-10-14 21:19:47,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:19:47,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:19:47,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608941606] [2020-10-14 21:19:47,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:19:47,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:19:47,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:19:47,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:19:47,702 INFO L87 Difference]: Start difference. First operand 3125 states and 4443 transitions. Second operand 7 states. [2020-10-14 21:20:00,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:20:00,786 INFO L93 Difference]: Finished difference Result 9557 states and 13720 transitions. [2020-10-14 21:20:00,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:20:00,789 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-10-14 21:20:00,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:20:00,832 INFO L225 Difference]: With dead ends: 9557 [2020-10-14 21:20:00,833 INFO L226 Difference]: Without dead ends: 6438 [2020-10-14 21:20:00,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:20:00,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6438 states. [2020-10-14 21:20:01,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6438 to 6299. [2020-10-14 21:20:01,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6299 states. [2020-10-14 21:20:01,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6299 states to 6299 states and 8422 transitions. [2020-10-14 21:20:01,080 INFO L78 Accepts]: Start accepts. Automaton has 6299 states and 8422 transitions. Word has length 118 [2020-10-14 21:20:01,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:20:01,082 INFO L479 AbstractCegarLoop]: Abstraction has 6299 states and 8422 transitions. [2020-10-14 21:20:01,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:20:01,087 INFO L276 IsEmpty]: Start isEmpty. Operand 6299 states and 8422 transitions. [2020-10-14 21:20:01,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 21:20:01,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:20:01,099 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:20:01,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:20:01,100 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:20:01,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:20:01,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1183798935, now seen corresponding path program 1 times [2020-10-14 21:20:01,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:20:01,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202592812] [2020-10-14 21:20:01,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:20:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:20:01,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:01,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:02,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:20:02,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 21:20:02,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:20:02,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1321 [2020-10-14 21:20:02,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:20:02,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:20:02,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:20:02,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:20:02,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-14 21:20:02,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:20:02,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:20:02,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:20:02,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:02,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:20:02,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:20:02,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:20:02,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:20:02,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:20:02,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:20:02,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:20:02,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:20:02,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:20:02,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:20:02,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:20:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:20:02,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:02,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:20:02,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 21:20:02,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:20:02,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-14 21:20:02,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:20:02,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:20:02,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:20:02,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:20:02,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 21:20:02,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:20:02,995 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:20:02,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202592812] [2020-10-14 21:20:02,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:20:02,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:20:02,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781453499] [2020-10-14 21:20:02,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:20:02,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:20:02,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:20:02,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:20:02,999 INFO L87 Difference]: Start difference. First operand 6299 states and 8422 transitions. Second operand 7 states. [2020-10-14 21:20:16,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:20:16,256 INFO L93 Difference]: Finished difference Result 19362 states and 27613 transitions. [2020-10-14 21:20:16,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:20:16,257 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 152 [2020-10-14 21:20:16,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:20:16,379 INFO L225 Difference]: With dead ends: 19362 [2020-10-14 21:20:16,380 INFO L226 Difference]: Without dead ends: 13069 [2020-10-14 21:20:16,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 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 21:20:16,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13069 states. [2020-10-14 21:20:16,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13069 to 12803. [2020-10-14 21:20:16,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12803 states. [2020-10-14 21:20:16,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12803 states to 12803 states and 16956 transitions. [2020-10-14 21:20:16,856 INFO L78 Accepts]: Start accepts. Automaton has 12803 states and 16956 transitions. Word has length 152 [2020-10-14 21:20:16,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:20:16,859 INFO L479 AbstractCegarLoop]: Abstraction has 12803 states and 16956 transitions. [2020-10-14 21:20:16,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:20:16,859 INFO L276 IsEmpty]: Start isEmpty. Operand 12803 states and 16956 transitions. [2020-10-14 21:20:16,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-14 21:20:16,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:20:16,871 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:20:16,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:20:16,871 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:20:16,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:20:16,872 INFO L82 PathProgramCache]: Analyzing trace with hash 757418262, now seen corresponding path program 1 times [2020-10-14 21:20:16,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:20:16,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164423139] [2020-10-14 21:20:16,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:20:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:20:16,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:17,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:18,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:20:18,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-14 21:20:18,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:20:18,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2049 [2020-10-14 21:20:18,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:20:18,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:20:18,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:20:18,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:20:18,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 21:20:18,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:20:19,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:20:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:20:19,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:19,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:20:19,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:20:19,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:20:19,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:20:19,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:20:19,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:20:19,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:20:19,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:20:19,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:20:19,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:20:19,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:20:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:20:19,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:19,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:20:19,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 21:20:19,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:20:19,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-14 21:20:19,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:20:19,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:20:19,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:20:19,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:20:19,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 21:20:19,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 21:20:19,967 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:20:19,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164423139] [2020-10-14 21:20:19,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:20:19,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 21:20:19,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914733934] [2020-10-14 21:20:19,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:20:19,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:20:19,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:20:19,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:20:19,971 INFO L87 Difference]: Start difference. First operand 12803 states and 16956 transitions. Second operand 8 states. [2020-10-14 21:20:44,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:20:44,596 INFO L93 Difference]: Finished difference Result 32455 states and 46654 transitions. [2020-10-14 21:20:44,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 21:20:44,602 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 187 [2020-10-14 21:20:44,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:20:44,681 INFO L225 Difference]: With dead ends: 32455 [2020-10-14 21:20:44,682 INFO L226 Difference]: Without dead ends: 19658 [2020-10-14 21:20:44,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2020-10-14 21:20:44,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19658 states. [2020-10-14 21:20:45,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19658 to 18573. [2020-10-14 21:20:45,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18573 states. [2020-10-14 21:20:45,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18573 states to 18573 states and 23027 transitions. [2020-10-14 21:20:45,180 INFO L78 Accepts]: Start accepts. Automaton has 18573 states and 23027 transitions. Word has length 187 [2020-10-14 21:20:45,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:20:45,182 INFO L479 AbstractCegarLoop]: Abstraction has 18573 states and 23027 transitions. [2020-10-14 21:20:45,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:20:45,183 INFO L276 IsEmpty]: Start isEmpty. Operand 18573 states and 23027 transitions. [2020-10-14 21:20:45,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-14 21:20:45,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:20:45,188 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:20:45,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:20:45,189 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:20:45,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:20:45,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1304322214, now seen corresponding path program 1 times [2020-10-14 21:20:45,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:20:45,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572363493] [2020-10-14 21:20:45,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:20:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:20:45,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:45,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:46,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:46,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:20:46,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-14 21:20:46,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:20:46,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1310 [2020-10-14 21:20:46,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:20:46,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:20:46,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:20:46,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 21:20:46,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 21:20:46,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:20:46,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:20:46,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:20:46,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:46,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:20:46,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:20:46,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:20:46,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:20:46,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:20:46,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:20:46,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:20:46,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:20:46,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:20:46,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:20:46,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:20:46,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:20:46,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:47,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:20:47,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:20:47,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:20:47,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-14 21:20:47,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:20:47,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:20:47,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:20:47,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:20:47,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:20:47,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:20:47,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:20:47,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:20:47,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:47,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:47,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:20:47,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:20:47,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:20:47,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-14 21:20:47,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:20:47,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:20:47,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:20:47,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:20:47,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:20:47,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:20:47,350 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 64 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-14 21:20:47,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572363493] [2020-10-14 21:20:47,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:20:47,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:20:47,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642089417] [2020-10-14 21:20:47,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:20:47,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:20:47,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:20:47,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:20:47,355 INFO L87 Difference]: Start difference. First operand 18573 states and 23027 transitions. Second operand 6 states. [2020-10-14 21:21:09,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:21:09,590 INFO L93 Difference]: Finished difference Result 48440 states and 65953 transitions. [2020-10-14 21:21:09,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:21:09,593 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 259 [2020-10-14 21:21:09,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:21:09,752 INFO L225 Difference]: With dead ends: 48440 [2020-10-14 21:21:09,752 INFO L226 Difference]: Without dead ends: 31409 [2020-10-14 21:21:09,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:21:09,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31409 states. [2020-10-14 21:21:10,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31409 to 31354. [2020-10-14 21:21:10,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31354 states. [2020-10-14 21:21:10,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31354 states to 31354 states and 40646 transitions. [2020-10-14 21:21:10,667 INFO L78 Accepts]: Start accepts. Automaton has 31354 states and 40646 transitions. Word has length 259 [2020-10-14 21:21:10,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:21:10,668 INFO L479 AbstractCegarLoop]: Abstraction has 31354 states and 40646 transitions. [2020-10-14 21:21:10,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:21:10,669 INFO L276 IsEmpty]: Start isEmpty. Operand 31354 states and 40646 transitions. [2020-10-14 21:21:10,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-14 21:21:10,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:21:10,675 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:21:10,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:21:10,675 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:21:10,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:21:10,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1703909783, now seen corresponding path program 1 times [2020-10-14 21:21:10,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:21:10,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022678059] [2020-10-14 21:21:10,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:21:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:21:10,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:10,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:12,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:13,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:14,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:21:14,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-14 21:21:14,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:21:14,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4168 [2020-10-14 21:21:14,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:21:14,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:21:14,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:21:14,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:21:14,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-10-14 21:21:14,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:21:15,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:21:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:21:15,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:15,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:21:15,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:21:15,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:21:15,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:21:15,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:21:15,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:21:15,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:21:15,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:21:15,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:21:15,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:21:15,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:21:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:21:15,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:15,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:15,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:21:15,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:21:15,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:21:15,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 457 [2020-10-14 21:21:15,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:21:15,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:21:15,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:21:15,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:21:15,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:21:15,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:21:15,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:21:15,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:21:15,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:15,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:21:15,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 21:21:15,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:21:15,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 21:21:15,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:21:15,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:21:15,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:21:15,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:21:15,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 21:21:15,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:21:15,960 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 21:21:15,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022678059] [2020-10-14 21:21:15,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:21:15,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:21:15,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38170635] [2020-10-14 21:21:15,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:21:15,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:21:15,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:21:15,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:21:15,965 INFO L87 Difference]: Start difference. First operand 31354 states and 40646 transitions. Second operand 7 states. [2020-10-14 21:21:36,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:21:36,082 INFO L93 Difference]: Finished difference Result 78330 states and 107362 transitions. [2020-10-14 21:21:36,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:21:36,085 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 266 [2020-10-14 21:21:36,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:21:36,255 INFO L225 Difference]: With dead ends: 78330 [2020-10-14 21:21:36,255 INFO L226 Difference]: Without dead ends: 48518 [2020-10-14 21:21:36,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:21:36,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48518 states. [2020-10-14 21:21:37,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48518 to 46106. [2020-10-14 21:21:37,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46106 states. [2020-10-14 21:21:37,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46106 states to 46106 states and 59485 transitions. [2020-10-14 21:21:37,582 INFO L78 Accepts]: Start accepts. Automaton has 46106 states and 59485 transitions. Word has length 266 [2020-10-14 21:21:37,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:21:37,583 INFO L479 AbstractCegarLoop]: Abstraction has 46106 states and 59485 transitions. [2020-10-14 21:21:37,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:21:37,583 INFO L276 IsEmpty]: Start isEmpty. Operand 46106 states and 59485 transitions. [2020-10-14 21:21:37,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-14 21:21:37,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:21:37,591 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:21:37,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:21:37,591 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:21:37,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:21:37,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1159585114, now seen corresponding path program 1 times [2020-10-14 21:21:37,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:21:37,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906071117] [2020-10-14 21:21:37,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:21:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:21:37,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:37,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:38,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:38,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:21:38,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-14 21:21:38,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:21:38,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1126 [2020-10-14 21:21:38,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:21:38,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:21:38,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:21:38,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-14 21:21:38,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 21:21:38,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:21:38,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:21:38,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:21:38,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:38,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:21:38,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:21:38,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:21:38,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:21:38,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:21:38,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:21:38,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:21:38,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:21:38,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:21:38,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:21:38,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:21:38,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:21:38,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:39,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:21:39,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:21:39,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:21:39,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 21:21:39,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:21:39,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:21:39,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:21:39,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:21:39,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:21:39,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:21:40,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:21:40,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:21:40,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:40,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:40,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:21:40,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:21:40,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:21:40,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-14 21:21:40,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:21:40,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:21:40,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:21:40,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:21:40,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 21:21:40,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:21:40,819 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 62 proven. 2 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-14 21:21:40,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906071117] [2020-10-14 21:21:40,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:21:40,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:21:40,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379590978] [2020-10-14 21:21:40,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:21:40,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:21:40,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:21:40,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:21:40,823 INFO L87 Difference]: Start difference. First operand 46106 states and 59485 transitions. Second operand 6 states. [2020-10-14 21:22:07,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:22:07,800 INFO L93 Difference]: Finished difference Result 113347 states and 150284 transitions. [2020-10-14 21:22:07,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:22:07,803 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 277 [2020-10-14 21:22:07,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:22:08,026 INFO L225 Difference]: With dead ends: 113347 [2020-10-14 21:22:08,027 INFO L226 Difference]: Without dead ends: 66420 [2020-10-14 21:22:08,100 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 21:22:08,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66420 states. [2020-10-14 21:22:09,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66420 to 65554. [2020-10-14 21:22:09,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65554 states. [2020-10-14 21:22:09,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65554 states to 65554 states and 84841 transitions. [2020-10-14 21:22:09,606 INFO L78 Accepts]: Start accepts. Automaton has 65554 states and 84841 transitions. Word has length 277 [2020-10-14 21:22:09,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:22:09,607 INFO L479 AbstractCegarLoop]: Abstraction has 65554 states and 84841 transitions. [2020-10-14 21:22:09,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:22:09,607 INFO L276 IsEmpty]: Start isEmpty. Operand 65554 states and 84841 transitions. [2020-10-14 21:22:09,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-14 21:22:09,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:22:09,623 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:22:09,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:22:09,624 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:22:09,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:22:09,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1240964971, now seen corresponding path program 1 times [2020-10-14 21:22:09,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:22:09,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [780622548] [2020-10-14 21:22:09,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:22:09,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:09,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:10,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:10,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-14 21:22:10,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:10,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 566 [2020-10-14 21:22:10,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:10,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:10,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:22:10,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 297 [2020-10-14 21:22:10,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 21:22:10,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:22:10,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:22:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:10,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:10,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:10,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:22:10,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:10,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:22:10,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:10,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:10,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:22:10,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:22:10,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:22:10,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:22:10,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:22:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:10,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:10,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:10,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:22:10,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:10,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 21:22:10,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:10,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:10,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:22:10,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:22:10,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:22:10,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:22:11,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:22:11,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:11,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:11,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:11,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 21:22:11,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:11,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-14 21:22:11,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:11,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:11,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:22:11,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:22:11,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-14 21:22:11,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:22:11,319 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-10-14 21:22:11,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [780622548] [2020-10-14 21:22:11,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:22:11,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:22:11,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564186676] [2020-10-14 21:22:11,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:22:11,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:22:11,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:22:11,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:22:11,330 INFO L87 Difference]: Start difference. First operand 65554 states and 84841 transitions. Second operand 5 states. [2020-10-14 21:22:30,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:22:30,593 INFO L93 Difference]: Finished difference Result 157597 states and 210912 transitions. [2020-10-14 21:22:30,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:22:30,595 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 324 [2020-10-14 21:22:30,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:22:30,920 INFO L225 Difference]: With dead ends: 157597 [2020-10-14 21:22:30,920 INFO L226 Difference]: Without dead ends: 92044 [2020-10-14 21:22:31,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:22:31,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92044 states. [2020-10-14 21:22:34,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92044 to 90454. [2020-10-14 21:22:34,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90454 states. [2020-10-14 21:22:34,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90454 states to 90454 states and 116400 transitions. [2020-10-14 21:22:34,648 INFO L78 Accepts]: Start accepts. Automaton has 90454 states and 116400 transitions. Word has length 324 [2020-10-14 21:22:34,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:22:34,649 INFO L479 AbstractCegarLoop]: Abstraction has 90454 states and 116400 transitions. [2020-10-14 21:22:34,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:22:34,650 INFO L276 IsEmpty]: Start isEmpty. Operand 90454 states and 116400 transitions. [2020-10-14 21:22:34,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2020-10-14 21:22:34,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:22:34,659 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:22:34,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:22:34,660 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:22:34,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:22:34,660 INFO L82 PathProgramCache]: Analyzing trace with hash -64652065, now seen corresponding path program 1 times [2020-10-14 21:22:34,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:22:34,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513657554] [2020-10-14 21:22:34,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:22:34,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:34,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:34,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:35,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:38,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:38,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 364 [2020-10-14 21:22:38,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:22:38,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3742 [2020-10-14 21:22:38,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:38,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:38,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:22:38,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-14 21:22:38,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 21:22:38,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:22:38,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:22:38,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:38,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:38,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:38,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:22:38,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:38,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:22:38,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:38,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:38,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:22:38,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:22:38,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:22:38,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:22:38,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:22:38,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:38,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:38,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:38,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:22:38,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:38,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 21:22:38,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:38,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:38,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:22:38,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:22:38,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:22:38,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:22:38,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:22:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:38,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:38,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:38,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:22:38,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:38,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 21:22:38,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:38,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:38,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:22:38,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:22:38,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:22:38,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:22:39,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-14 21:22:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:39,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:39,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:39,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:22:39,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:39,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 21:22:39,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:39,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:39,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:22:39,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-14 21:22:39,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:22:39,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:22:39,186 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 186 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-14 21:22:39,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513657554] [2020-10-14 21:22:39,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:22:39,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:22:39,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711350781] [2020-10-14 21:22:39,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:22:39,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:22:39,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:22:39,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:22:39,190 INFO L87 Difference]: Start difference. First operand 90454 states and 116400 transitions. Second operand 7 states.