/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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 14:07:20,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 14:07:20,922 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 14:07:20,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 14:07:20,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 14:07:20,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 14:07:20,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 14:07:20,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 14:07:20,954 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 14:07:20,955 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 14:07:20,956 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 14:07:20,958 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 14:07:20,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 14:07:20,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 14:07:20,960 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 14:07:20,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 14:07:20,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 14:07:20,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 14:07:20,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 14:07:20,967 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 14:07:20,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 14:07:20,970 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 14:07:20,971 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 14:07:20,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 14:07:20,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 14:07:20,975 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 14:07:20,975 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 14:07:20,976 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 14:07:20,977 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 14:07:20,978 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 14:07:20,978 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 14:07:20,979 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 14:07:20,980 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 14:07:20,981 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 14:07:20,982 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 14:07:20,982 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 14:07:20,983 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 14:07:20,983 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 14:07:20,983 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 14:07:20,984 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 14:07:20,985 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 14:07:20,985 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 [2020-10-12 14:07:21,009 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 14:07:21,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 14:07:21,011 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 14:07:21,011 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 14:07:21,012 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 14:07:21,012 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 14:07:21,012 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 14:07:21,012 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 14:07:21,012 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 14:07:21,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 14:07:21,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 14:07:21,013 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 14:07:21,013 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 14:07:21,013 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 14:07:21,014 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 14:07:21,014 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 14:07:21,014 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 14:07:21,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 14:07:21,014 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 14:07:21,015 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 14:07:21,015 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 14:07:21,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 14:07:21,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 14:07:21,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 14:07:21,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 14:07:21,016 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 14:07:21,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 14:07:21,016 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 14:07:21,017 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 14:07:21,017 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 14:07:21,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 14:07:21,356 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 14:07:21,359 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 14:07:21,361 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 14:07:21,361 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 14:07:21,362 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label05.c [2020-10-12 14:07:21,424 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4833f0043/6956de8a6b3c429785c966432ad39245/FLAGda85bbb76 [2020-10-12 14:07:22,128 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 14:07:22,129 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label05.c [2020-10-12 14:07:22,157 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4833f0043/6956de8a6b3c429785c966432ad39245/FLAGda85bbb76 [2020-10-12 14:07:22,262 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4833f0043/6956de8a6b3c429785c966432ad39245 [2020-10-12 14:07:22,274 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 14:07:22,277 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 14:07:22,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 14:07:22,280 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 14:07:22,284 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 14:07:22,286 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:07:22" (1/1) ... [2020-10-12 14:07:22,290 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bc3ae89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:07:22, skipping insertion in model container [2020-10-12 14:07:22,290 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:07:22" (1/1) ... [2020-10-12 14:07:22,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 14:07:22,387 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 14:07:23,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:07:23,382 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 14:07:23,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:07:23,827 INFO L208 MainTranslator]: Completed translation [2020-10-12 14:07:23,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:07:23 WrapperNode [2020-10-12 14:07:23,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 14:07:23,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 14:07:23,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 14:07:23,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 14:07:23,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:07:23" (1/1) ... [2020-10-12 14:07:23,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:07:23" (1/1) ... [2020-10-12 14:07:23,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:07:23" (1/1) ... [2020-10-12 14:07:23,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:07:23" (1/1) ... [2020-10-12 14:07:23,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:07:23" (1/1) ... [2020-10-12 14:07:24,004 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:07:23" (1/1) ... [2020-10-12 14:07:24,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:07:23" (1/1) ... [2020-10-12 14:07:24,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 14:07:24,046 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 14:07:24,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 14:07:24,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 14:07:24,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:07:23" (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 [2020-10-12 14:07:24,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 14:07:24,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 14:07:24,123 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 14:07:24,123 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 14:07:24,123 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 14:07:24,123 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 14:07:24,124 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 14:07:24,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 14:07:24,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 14:07:24,126 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 14:07:24,126 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 14:07:24,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 14:07:24,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 14:07:30,186 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 14:07:30,187 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 14:07:30,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:07:30 BoogieIcfgContainer [2020-10-12 14:07:30,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 14:07:30,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 14:07:30,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 14:07:30,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 14:07:30,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 02:07:22" (1/3) ... [2020-10-12 14:07:30,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32696e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:07:30, skipping insertion in model container [2020-10-12 14:07:30,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:07:23" (2/3) ... [2020-10-12 14:07:30,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32696e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:07:30, skipping insertion in model container [2020-10-12 14:07:30,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:07:30" (3/3) ... [2020-10-12 14:07:30,206 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label05.c [2020-10-12 14:07:30,218 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 14:07:30,233 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 14:07:30,248 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 14:07:30,286 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 14:07:30,286 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 14:07:30,286 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 14:07:30,286 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 14:07:30,287 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 14:07:30,287 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 14:07:30,287 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 14:07:30,287 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 14:07:30,324 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-12 14:07:30,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 14:07:30,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:07:30,343 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:07:30,344 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:07:30,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:07:30,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1317057632, now seen corresponding path program 1 times [2020-10-12 14:07:30,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:07:30,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251294518] [2020-10-12 14:07:30,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:07:30,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:07:30,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:07:31,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:07:31,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 14:07:31,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:07:31,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 578 [2020-10-12 14:07:31,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:07:31,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:07:31,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:07:31,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 14:07:31,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 14:07:31,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:07:31,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:07:31,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:07:31,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:07:31,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:07:31,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:07:31,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 14:07:31,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:07:31,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:07:31,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:07:31,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:07:31,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:07:31,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:07:31,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251294518] [2020-10-12 14:07:31,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:07:31,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 14:07:31,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513600262] [2020-10-12 14:07:31,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 14:07:31,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:07:31,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 14:07:31,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 14:07:31,509 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-12 14:07:37,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:07:37,604 INFO L93 Difference]: Finished difference Result 1240 states and 2220 transitions. [2020-10-12 14:07:37,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:07:37,610 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-12 14:07:37,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:07:37,642 INFO L225 Difference]: With dead ends: 1240 [2020-10-12 14:07:37,642 INFO L226 Difference]: Without dead ends: 724 [2020-10-12 14:07:37,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:07:37,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2020-10-12 14:07:37,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 712. [2020-10-12 14:07:37,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 712 states. [2020-10-12 14:07:37,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1129 transitions. [2020-10-12 14:07:37,783 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1129 transitions. Word has length 70 [2020-10-12 14:07:37,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:07:37,784 INFO L479 AbstractCegarLoop]: Abstraction has 712 states and 1129 transitions. [2020-10-12 14:07:37,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 14:07:37,785 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1129 transitions. [2020-10-12 14:07:37,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-12 14:07:37,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:07:37,801 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:07:37,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 14:07:37,802 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:07:37,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:07:37,803 INFO L82 PathProgramCache]: Analyzing trace with hash 717900603, now seen corresponding path program 1 times [2020-10-12 14:07:37,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:07:37,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783587224] [2020-10-12 14:07:37,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:07:37,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:07:37,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:07:38,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:07:39,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:07:39,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:07:39,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:07:39,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-12 14:07:39,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:07:39,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1938 [2020-10-12 14:07:39,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:07:39,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 14:07:39,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:07:39,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-12 14:07:39,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 14:07:39,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:07:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:07:39,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:07:39,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:07:39,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:07:39,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:07:39,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 14:07:39,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:07:39,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:07:39,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:07:39,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:07:39,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:07:39,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:07:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:07:40,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:07:40,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:07:40,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:07:40,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 14:07:40,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:07:40,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-12 14:07:40,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:07:40,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:07:40,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:07:40,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 14:07:40,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:07:40,313 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 14:07:40,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783587224] [2020-10-12 14:07:40,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:07:40,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:07:40,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292094891] [2020-10-12 14:07:40,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:07:40,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:07:40,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:07:40,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:07:40,318 INFO L87 Difference]: Start difference. First operand 712 states and 1129 transitions. Second operand 6 states. [2020-10-12 14:07:45,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:07:45,880 INFO L93 Difference]: Finished difference Result 2078 states and 3345 transitions. [2020-10-12 14:07:45,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 14:07:45,881 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2020-10-12 14:07:45,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:07:45,893 INFO L225 Difference]: With dead ends: 2078 [2020-10-12 14:07:45,893 INFO L226 Difference]: Without dead ends: 1372 [2020-10-12 14:07:45,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:07:45,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2020-10-12 14:07:45,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 1359. [2020-10-12 14:07:45,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1359 states. [2020-10-12 14:07:45,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1889 transitions. [2020-10-12 14:07:45,982 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1889 transitions. Word has length 142 [2020-10-12 14:07:45,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:07:45,986 INFO L479 AbstractCegarLoop]: Abstraction has 1359 states and 1889 transitions. [2020-10-12 14:07:45,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 14:07:45,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1889 transitions. [2020-10-12 14:07:45,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-12 14:07:45,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:07:45,999 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 14:07:45,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 14:07:46,000 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:07:46,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:07:46,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1661095937, now seen corresponding path program 1 times [2020-10-12 14:07:46,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:07:46,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323555193] [2020-10-12 14:07:46,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:07:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:07:46,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:07:46,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:07:46,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:07:48,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:07:48,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-12 14:07:48,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:07:48,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2480 [2020-10-12 14:07:48,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:07:48,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 14:07:48,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-12 14:07:48,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 14:07:48,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:07:48,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:07:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:07:48,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:07:48,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:07:48,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:07:48,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:07:48,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:07:48,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:07:48,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:07:48,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:07:48,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:07:48,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 14:07:48,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:07:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:07:48,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:07:49,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:07:49,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 14:07:49,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:07:49,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-12 14:07:49,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:07:49,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:07:49,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:07:49,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 14:07:49,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 14:07:49,214 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:07:49,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323555193] [2020-10-12 14:07:49,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:07:49,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:07:49,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917522809] [2020-10-12 14:07:49,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:07:49,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:07:49,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:07:49,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:07:49,219 INFO L87 Difference]: Start difference. First operand 1359 states and 1889 transitions. Second operand 8 states. [2020-10-12 14:07:56,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:07:56,290 INFO L93 Difference]: Finished difference Result 2870 states and 3972 transitions. [2020-10-12 14:07:56,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 14:07:56,295 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 153 [2020-10-12 14:07:56,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:07:56,307 INFO L225 Difference]: With dead ends: 2870 [2020-10-12 14:07:56,307 INFO L226 Difference]: Without dead ends: 1363 [2020-10-12 14:07:56,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-10-12 14:07:56,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2020-10-12 14:07:56,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1359. [2020-10-12 14:07:56,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1359 states. [2020-10-12 14:07:56,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1879 transitions. [2020-10-12 14:07:56,353 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1879 transitions. Word has length 153 [2020-10-12 14:07:56,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:07:56,354 INFO L479 AbstractCegarLoop]: Abstraction has 1359 states and 1879 transitions. [2020-10-12 14:07:56,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:07:56,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1879 transitions. [2020-10-12 14:07:56,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-12 14:07:56,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:07:56,358 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 14:07:56,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 14:07:56,359 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:07:56,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:07:56,359 INFO L82 PathProgramCache]: Analyzing trace with hash -935133604, now seen corresponding path program 1 times [2020-10-12 14:07:56,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:07:56,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186543430] [2020-10-12 14:07:56,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:07:56,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:07:56,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:07:56,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:07:56,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:07:57,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:07:57,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:07:57,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-12 14:07:57,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:07:57,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1462 [2020-10-12 14:07:57,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:07:57,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:07:57,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:07:57,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-12 14:07:57,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:07:57,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:07:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:07:57,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:07:57,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:07:57,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:07:57,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:07:57,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 14:07:57,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:07:57,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:07:57,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:07:57,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:07:57,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:07:57,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:07:57,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:07:58,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:07:58,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:07:58,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 14:07:58,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:07:58,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-12 14:07:58,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:07:58,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:07:58,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:07:58,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 14:07:58,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 14:07:58,315 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:07:58,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186543430] [2020-10-12 14:07:58,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:07:58,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 14:07:58,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845941222] [2020-10-12 14:07:58,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:07:58,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:07:58,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:07:58,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:07:58,326 INFO L87 Difference]: Start difference. First operand 1359 states and 1879 transitions. Second operand 7 states. [2020-10-12 14:08:07,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:08:07,464 INFO L93 Difference]: Finished difference Result 4045 states and 5697 transitions. [2020-10-12 14:08:07,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:08:07,468 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 193 [2020-10-12 14:08:07,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:08:07,482 INFO L225 Difference]: With dead ends: 4045 [2020-10-12 14:08:07,482 INFO L226 Difference]: Without dead ends: 2692 [2020-10-12 14:08:07,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:08:07,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2692 states. [2020-10-12 14:08:07,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2692 to 2331. [2020-10-12 14:08:07,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2331 states. [2020-10-12 14:08:07,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 2984 transitions. [2020-10-12 14:08:07,557 INFO L78 Accepts]: Start accepts. Automaton has 2331 states and 2984 transitions. Word has length 193 [2020-10-12 14:08:07,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:08:07,558 INFO L479 AbstractCegarLoop]: Abstraction has 2331 states and 2984 transitions. [2020-10-12 14:08:07,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:08:07,558 INFO L276 IsEmpty]: Start isEmpty. Operand 2331 states and 2984 transitions. [2020-10-12 14:08:07,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-12 14:08:07,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:08:07,562 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:08:07,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 14:08:07,563 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:08:07,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:08:07,563 INFO L82 PathProgramCache]: Analyzing trace with hash -2129841892, now seen corresponding path program 1 times [2020-10-12 14:08:07,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:08:07,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748623755] [2020-10-12 14:08:07,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:08:07,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:08:07,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:07,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:08,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:10,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:08:10,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-12 14:08:10,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:08:10,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2974 [2020-10-12 14:08:10,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:08:10,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 14:08:10,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:08:10,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-12 14:08:10,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:08:10,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:08:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:08:10,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:10,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:08:10,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:08:10,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:08:10,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 14:08:10,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:08:10,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:08:10,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:08:10,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:08:10,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:08:10,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:08:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:08:10,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:11,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:08:11,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-12 14:08:11,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:08:11,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-12 14:08:11,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:08:11,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:08:11,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:08:11,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-12 14:08:11,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:08:11,416 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 14:08:11,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748623755] [2020-10-12 14:08:11,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:08:11,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:08:11,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664489120] [2020-10-12 14:08:11,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:08:11,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:08:11,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:08:11,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:08:11,421 INFO L87 Difference]: Start difference. First operand 2331 states and 2984 transitions. Second operand 6 states. [2020-10-12 14:08:21,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:08:21,061 INFO L93 Difference]: Finished difference Result 6273 states and 8191 transitions. [2020-10-12 14:08:21,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 14:08:21,063 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 270 [2020-10-12 14:08:21,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:08:21,086 INFO L225 Difference]: With dead ends: 6273 [2020-10-12 14:08:21,086 INFO L226 Difference]: Without dead ends: 3948 [2020-10-12 14:08:21,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:08:21,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3948 states. [2020-10-12 14:08:21,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3948 to 3909. [2020-10-12 14:08:21,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3909 states. [2020-10-12 14:08:21,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3909 states to 3909 states and 4811 transitions. [2020-10-12 14:08:21,202 INFO L78 Accepts]: Start accepts. Automaton has 3909 states and 4811 transitions. Word has length 270 [2020-10-12 14:08:21,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:08:21,203 INFO L479 AbstractCegarLoop]: Abstraction has 3909 states and 4811 transitions. [2020-10-12 14:08:21,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 14:08:21,204 INFO L276 IsEmpty]: Start isEmpty. Operand 3909 states and 4811 transitions. [2020-10-12 14:08:21,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2020-10-12 14:08:21,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:08:21,212 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:08:21,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 14:08:21,213 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:08:21,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:08:21,214 INFO L82 PathProgramCache]: Analyzing trace with hash -468948057, now seen corresponding path program 1 times [2020-10-12 14:08:21,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:08:21,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899897150] [2020-10-12 14:08:21,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:08:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:08:21,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:21,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:21,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:26,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:08:26,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 362 [2020-10-12 14:08:26,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:08:26,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-12 14:08:26,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:08:26,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:08:26,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:08:26,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-12 14:08:26,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:08:26,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:08:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:08:26,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:26,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:08:26,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:08:26,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:08:26,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 14:08:26,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:08:26,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:08:26,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:08:26,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:08:26,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:08:26,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:08:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:08:26,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:26,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:08:26,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-12 14:08:26,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:08:26,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-12 14:08:26,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:08:26,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:08:26,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:08:26,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-12 14:08:26,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:08:27,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-12 14:08:27,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:08:27,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:27,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:08:27,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 14:08:27,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:08:27,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 14:08:27,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:08:27,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:08:27,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-12 14:08:27,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:08:27,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:08:27,632 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 126 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 14:08:27,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899897150] [2020-10-12 14:08:27,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:08:27,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:08:27,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280989397] [2020-10-12 14:08:27,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:08:27,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:08:27,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:08:27,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:08:27,635 INFO L87 Difference]: Start difference. First operand 3909 states and 4811 transitions. Second operand 7 states. [2020-10-12 14:08:35,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:08:35,719 INFO L93 Difference]: Finished difference Result 8196 states and 10048 transitions. [2020-10-12 14:08:35,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 14:08:35,721 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 350 [2020-10-12 14:08:35,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:08:35,744 INFO L225 Difference]: With dead ends: 8196 [2020-10-12 14:08:35,745 INFO L226 Difference]: Without dead ends: 4293 [2020-10-12 14:08:35,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-12 14:08:35,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4293 states. [2020-10-12 14:08:35,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4293 to 4240. [2020-10-12 14:08:35,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4240 states. [2020-10-12 14:08:35,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4240 states to 4240 states and 5161 transitions. [2020-10-12 14:08:35,866 INFO L78 Accepts]: Start accepts. Automaton has 4240 states and 5161 transitions. Word has length 350 [2020-10-12 14:08:35,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:08:35,867 INFO L479 AbstractCegarLoop]: Abstraction has 4240 states and 5161 transitions. [2020-10-12 14:08:35,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:08:35,867 INFO L276 IsEmpty]: Start isEmpty. Operand 4240 states and 5161 transitions. [2020-10-12 14:08:35,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-10-12 14:08:35,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:08:35,875 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:08:35,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 14:08:35,876 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:08:35,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:08:35,876 INFO L82 PathProgramCache]: Analyzing trace with hash 755618270, now seen corresponding path program 1 times [2020-10-12 14:08:35,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:08:35,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025487234] [2020-10-12 14:08:35,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:08:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:08:36,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:36,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:37,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:37,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:39,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:08:39,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 377 [2020-10-12 14:08:39,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:08:39,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3566 [2020-10-12 14:08:39,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:08:39,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 14:08:39,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:08:39,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 371 [2020-10-12 14:08:39,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:08:39,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:08:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:08:39,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:39,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:08:39,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:08:39,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:08:39,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 14:08:39,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:08:39,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:08:39,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:08:39,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:08:39,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:08:39,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:08:39,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:08:39,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:39,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:08:39,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 14:08:39,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:08:39,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-12 14:08:39,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:08:39,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:08:39,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:08:39,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 14:08:39,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:08:39,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 14:08:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:08:40,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:40,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:08:40,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:08:40,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-12 14:08:40,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:08:40,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 567 [2020-10-12 14:08:40,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:08:40,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 14:08:40,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:08:40,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-12 14:08:40,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:08:41,607 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 21 proven. 196 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 14:08:41,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025487234] [2020-10-12 14:08:41,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:08:41,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 14:08:41,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911888798] [2020-10-12 14:08:41,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 14:08:41,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:08:41,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 14:08:41,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:08:41,609 INFO L87 Difference]: Start difference. First operand 4240 states and 5161 transitions. Second operand 12 states. [2020-10-12 14:08:42,298 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-10-12 14:08:42,661 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2020-10-12 14:08:44,107 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-10-12 14:08:44,643 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-10-12 14:08:44,927 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-10-12 14:08:47,262 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2020-10-12 14:09:02,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:09:02,243 INFO L93 Difference]: Finished difference Result 10237 states and 12938 transitions. [2020-10-12 14:09:02,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-12 14:09:02,245 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 365 [2020-10-12 14:09:02,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:09:02,281 INFO L225 Difference]: With dead ends: 10237 [2020-10-12 14:09:02,281 INFO L226 Difference]: Without dead ends: 6310 [2020-10-12 14:09:02,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=436, Invalid=1370, Unknown=0, NotChecked=0, Total=1806 [2020-10-12 14:09:02,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6310 states. [2020-10-12 14:09:02,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6310 to 5504. [2020-10-12 14:09:02,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5504 states. [2020-10-12 14:09:02,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5504 states to 5504 states and 6899 transitions. [2020-10-12 14:09:02,530 INFO L78 Accepts]: Start accepts. Automaton has 5504 states and 6899 transitions. Word has length 365 [2020-10-12 14:09:02,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:09:02,532 INFO L479 AbstractCegarLoop]: Abstraction has 5504 states and 6899 transitions. [2020-10-12 14:09:02,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 14:09:02,532 INFO L276 IsEmpty]: Start isEmpty. Operand 5504 states and 6899 transitions. [2020-10-12 14:09:02,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2020-10-12 14:09:02,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:09:02,543 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:09:02,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 14:09:02,544 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:09:02,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:09:02,545 INFO L82 PathProgramCache]: Analyzing trace with hash 71516830, now seen corresponding path program 1 times [2020-10-12 14:09:02,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:09:02,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122450151] [2020-10-12 14:09:02,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:09:02,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:02,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:02,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:05,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:05,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 436 [2020-10-12 14:09:05,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:09:05,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2485 [2020-10-12 14:09:05,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:05,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:09:05,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-12 14:09:05,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-12 14:09:05,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:09:05,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:09:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:05,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:05,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:05,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:09:05,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:09:05,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:09:05,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:05,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:09:05,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:09:05,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:09:05,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 14:09:05,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:09:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:05,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:05,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:05,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:09:05,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:09:05,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-12 14:09:05,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:05,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:09:05,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:09:05,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-12 14:09:05,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:09:05,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:09:05,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:05,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:05,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:05,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 14:09:05,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:09:05,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-12 14:09:05,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:05,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:09:05,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:09:05,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 14:09:05,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:09:06,072 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 203 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 14:09:06,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122450151] [2020-10-12 14:09:06,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:09:06,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:09:06,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329377680] [2020-10-12 14:09:06,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:09:06,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:09:06,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:09:06,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:09:06,076 INFO L87 Difference]: Start difference. First operand 5504 states and 6899 transitions. Second operand 8 states. [2020-10-12 14:09:22,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:09:22,117 INFO L93 Difference]: Finished difference Result 16082 states and 21619 transitions. [2020-10-12 14:09:22,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 14:09:22,119 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 424 [2020-10-12 14:09:22,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:09:22,166 INFO L225 Difference]: With dead ends: 16082 [2020-10-12 14:09:22,167 INFO L226 Difference]: Without dead ends: 10891 [2020-10-12 14:09:22,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-12 14:09:22,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10891 states. [2020-10-12 14:09:22,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10891 to 10864. [2020-10-12 14:09:22,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10864 states. [2020-10-12 14:09:22,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10864 states to 10864 states and 13823 transitions. [2020-10-12 14:09:22,440 INFO L78 Accepts]: Start accepts. Automaton has 10864 states and 13823 transitions. Word has length 424 [2020-10-12 14:09:22,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:09:22,441 INFO L479 AbstractCegarLoop]: Abstraction has 10864 states and 13823 transitions. [2020-10-12 14:09:22,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:09:22,442 INFO L276 IsEmpty]: Start isEmpty. Operand 10864 states and 13823 transitions. [2020-10-12 14:09:22,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2020-10-12 14:09:22,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:09:22,459 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:09:22,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 14:09:22,459 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:09:22,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:09:22,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1872548719, now seen corresponding path program 1 times [2020-10-12 14:09:22,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:09:22,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476032574] [2020-10-12 14:09:22,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:09:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:22,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:22,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:23,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:26,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:27,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:27,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 551 [2020-10-12 14:09:27,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:09:27,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 14:09:27,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:27,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:09:27,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 481 [2020-10-12 14:09:27,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 14:09:27,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:09:27,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:09:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:27,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:27,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:27,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:09:27,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:09:27,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:09:27,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:27,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:09:27,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:09:27,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:09:27,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:09:27,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:09:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:27,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:27,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:27,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:09:27,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:09:27,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-12 14:09:27,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:27,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:09:27,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:09:27,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:09:27,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:09:27,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:09:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:27,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:27,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:27,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:09:27,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:09:27,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 14:09:27,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:27,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:09:27,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:09:27,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:09:27,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:09:27,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-12 14:09:27,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:27,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:28,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:28,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-12 14:09:28,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:09:28,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 14:09:28,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:28,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:09:28,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:09:28,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 14:09:28,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:09:28,164 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 192 proven. 3 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2020-10-12 14:09:28,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1476032574] [2020-10-12 14:09:28,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:09:28,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:09:28,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185674845] [2020-10-12 14:09:28,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:09:28,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:09:28,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:09:28,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:09:28,167 INFO L87 Difference]: Start difference. First operand 10864 states and 13823 transitions. Second operand 5 states. [2020-10-12 14:09:33,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:09:33,117 INFO L93 Difference]: Finished difference Result 21427 states and 27365 transitions. [2020-10-12 14:09:33,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:09:33,120 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 537 [2020-10-12 14:09:33,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:09:33,159 INFO L225 Difference]: With dead ends: 21427 [2020-10-12 14:09:33,160 INFO L226 Difference]: Without dead ends: 10866 [2020-10-12 14:09:33,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:09:33,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10866 states. [2020-10-12 14:09:33,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10866 to 10864. [2020-10-12 14:09:33,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10864 states. [2020-10-12 14:09:33,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10864 states to 10864 states and 13817 transitions. [2020-10-12 14:09:33,465 INFO L78 Accepts]: Start accepts. Automaton has 10864 states and 13817 transitions. Word has length 537 [2020-10-12 14:09:33,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:09:33,466 INFO L479 AbstractCegarLoop]: Abstraction has 10864 states and 13817 transitions. [2020-10-12 14:09:33,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:09:33,466 INFO L276 IsEmpty]: Start isEmpty. Operand 10864 states and 13817 transitions. [2020-10-12 14:09:33,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2020-10-12 14:09:33,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:09:33,491 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:09:33,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 14:09:33,491 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:09:33,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:09:33,492 INFO L82 PathProgramCache]: Analyzing trace with hash -904089257, now seen corresponding path program 1 times [2020-10-12 14:09:33,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:09:33,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967139692] [2020-10-12 14:09:33,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:09:33,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:33,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:34,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:34,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:34,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:36,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:38,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:38,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 597 [2020-10-12 14:09:38,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 14:09:38,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-12 14:09:38,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:38,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:09:38,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-12 14:09:38,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-12 14:09:38,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:09:38,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:09:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:38,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:38,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:38,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:09:38,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:09:38,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:09:38,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:38,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:09:38,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:09:38,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:09:38,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:09:38,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:09:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:38,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:39,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:39,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:09:39,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:09:39,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-12 14:09:39,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:39,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:09:39,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:09:39,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-12 14:09:39,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:09:39,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:09:39,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:39,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:39,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:39,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:09:39,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:09:39,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-12 14:09:39,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:39,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:09:39,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:09:39,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-12 14:09:39,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:09:39,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-12 14:09:39,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:39,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:39,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:39,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:39,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 14:09:39,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:09:39,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-12 14:09:39,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:39,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:09:39,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-12 14:09:39,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:09:39,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:09:39,950 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 305 proven. 106 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-12 14:09:39,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967139692] [2020-10-12 14:09:39,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:09:39,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:09:39,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528374900] [2020-10-12 14:09:39,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:09:39,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:09:39,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:09:39,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:09:39,953 INFO L87 Difference]: Start difference. First operand 10864 states and 13817 transitions. Second operand 8 states. [2020-10-12 14:09:52,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:09:52,898 INFO L93 Difference]: Finished difference Result 22687 states and 28888 transitions. [2020-10-12 14:09:52,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:09:52,901 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 583 [2020-10-12 14:09:52,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:09:52,957 INFO L225 Difference]: With dead ends: 22687 [2020-10-12 14:09:52,958 INFO L226 Difference]: Without dead ends: 12136 [2020-10-12 14:09:52,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-10-12 14:09:52,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12136 states. [2020-10-12 14:09:53,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12136 to 11809. [2020-10-12 14:09:53,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11809 states. [2020-10-12 14:09:53,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11809 states to 11809 states and 14856 transitions. [2020-10-12 14:09:53,261 INFO L78 Accepts]: Start accepts. Automaton has 11809 states and 14856 transitions. Word has length 583 [2020-10-12 14:09:53,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:09:53,262 INFO L479 AbstractCegarLoop]: Abstraction has 11809 states and 14856 transitions. [2020-10-12 14:09:53,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:09:53,263 INFO L276 IsEmpty]: Start isEmpty. Operand 11809 states and 14856 transitions. [2020-10-12 14:09:53,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2020-10-12 14:09:53,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:09:53,282 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:09:53,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 14:09:53,283 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:09:53,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:09:53,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1917653743, now seen corresponding path program 1 times [2020-10-12 14:09:53,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:09:53,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1117493125] [2020-10-12 14:09:53,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:09:53,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:53,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:53,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:55,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:56,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:56,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 609 [2020-10-12 14:09:56,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:09:56,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3036 [2020-10-12 14:09:56,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:56,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:09:56,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-12 14:09:56,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-12 14:09:56,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:09:56,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:09:56,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:56,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:56,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:56,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:09:56,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:09:56,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:09:56,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:56,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:09:56,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:09:56,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:09:56,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:09:56,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:09:56,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:56,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:56,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:56,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:09:56,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:09:56,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-12 14:09:56,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:56,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:09:56,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:09:56,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:09:56,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:09:56,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:09:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:56,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:56,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:56,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:09:56,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:09:56,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-12 14:09:56,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:56,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:09:56,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:09:56,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 14:09:56,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:09:56,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-12 14:09:56,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:09:56,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:09:57,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:09:57,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 14:09:57,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:09:57,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-12 14:09:57,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:09:57,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:09:57,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:09:57,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-12 14:09:57,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:09:57,335 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 359 proven. 64 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-12 14:09:57,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1117493125] [2020-10-12 14:09:57,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:09:57,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 14:09:57,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109072707] [2020-10-12 14:09:57,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:09:57,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:09:57,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:09:57,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:09:57,338 INFO L87 Difference]: Start difference. First operand 11809 states and 14856 transitions. Second operand 6 states. [2020-10-12 14:10:10,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:10:10,416 INFO L93 Difference]: Finished difference Result 28148 states and 36822 transitions. [2020-10-12 14:10:10,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 14:10:10,419 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 595 [2020-10-12 14:10:10,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:10:10,490 INFO L225 Difference]: With dead ends: 28148 [2020-10-12 14:10:10,490 INFO L226 Difference]: Without dead ends: 16652 [2020-10-12 14:10:10,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:10:10,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16652 states. [2020-10-12 14:10:10,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16652 to 16589. [2020-10-12 14:10:10,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16589 states. [2020-10-12 14:10:11,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16589 states to 16589 states and 21476 transitions. [2020-10-12 14:10:11,033 INFO L78 Accepts]: Start accepts. Automaton has 16589 states and 21476 transitions. Word has length 595 [2020-10-12 14:10:11,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:10:11,034 INFO L479 AbstractCegarLoop]: Abstraction has 16589 states and 21476 transitions. [2020-10-12 14:10:11,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 14:10:11,034 INFO L276 IsEmpty]: Start isEmpty. Operand 16589 states and 21476 transitions. [2020-10-12 14:10:11,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2020-10-12 14:10:11,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:10:11,056 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:10:11,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 14:10:11,056 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:10:11,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:10:11,058 INFO L82 PathProgramCache]: Analyzing trace with hash -395580308, now seen corresponding path program 1 times [2020-10-12 14:10:11,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:10:11,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895318144] [2020-10-12 14:10:11,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:10:11,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:11,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:11,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:12,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:12,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:13,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:14,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:16,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:16,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 629 [2020-10-12 14:10:16,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 14:10:16,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-12 14:10:16,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:16,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 14:10:16,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-12 14:10:16,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 455 [2020-10-12 14:10:16,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:16,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:10:16,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:16,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:16,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:16,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:10:16,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:10:16,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:10:16,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:16,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:10:16,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:10:16,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:10:16,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:16,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:10:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:16,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:16,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:16,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 14:10:16,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:10:16,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-12 14:10:16,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:16,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:10:16,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:10:16,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 14:10:16,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:16,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 14:10:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:16,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:16,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:16,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:16,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-12 14:10:16,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:10:16,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 485 [2020-10-12 14:10:16,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:16,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:10:16,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:10:16,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-12 14:10:16,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:16,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-12 14:10:17,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:17,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:17,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:17,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:17,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-12 14:10:17,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:10:17,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-12 14:10:17,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:17,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:10:17,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:10:17,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-12 14:10:17,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:17,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2020-10-12 14:10:17,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:17,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:17,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:17,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 14:10:17,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:10:17,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-12 14:10:17,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:17,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:10:17,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:10:17,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 14:10:17,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:17,622 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 513 proven. 10 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2020-10-12 14:10:17,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895318144] [2020-10-12 14:10:17,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:10:17,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:10:17,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882333657] [2020-10-12 14:10:17,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:10:17,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:10:17,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:10:17,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:10:17,625 INFO L87 Difference]: Start difference. First operand 16589 states and 21476 transitions. Second operand 7 states. [2020-10-12 14:10:33,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:10:33,684 INFO L93 Difference]: Finished difference Result 40351 states and 53108 transitions. [2020-10-12 14:10:33,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:10:33,687 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 613 [2020-10-12 14:10:33,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:10:33,754 INFO L225 Difference]: With dead ends: 40351 [2020-10-12 14:10:33,754 INFO L226 Difference]: Without dead ends: 22477 [2020-10-12 14:10:33,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:10:33,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22477 states. [2020-10-12 14:10:34,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22477 to 19692. [2020-10-12 14:10:34,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19692 states. [2020-10-12 14:10:34,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19692 states to 19692 states and 24103 transitions. [2020-10-12 14:10:34,229 INFO L78 Accepts]: Start accepts. Automaton has 19692 states and 24103 transitions. Word has length 613 [2020-10-12 14:10:34,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:10:34,230 INFO L479 AbstractCegarLoop]: Abstraction has 19692 states and 24103 transitions. [2020-10-12 14:10:34,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:10:34,230 INFO L276 IsEmpty]: Start isEmpty. Operand 19692 states and 24103 transitions. [2020-10-12 14:10:34,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2020-10-12 14:10:34,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:10:34,249 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-12 14:10:34,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 14:10:34,250 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:10:34,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:10:34,250 INFO L82 PathProgramCache]: Analyzing trace with hash -190302261, now seen corresponding path program 1 times [2020-10-12 14:10:34,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:10:34,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772742509] [2020-10-12 14:10:34,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:10:34,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:34,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:34,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:36,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:36,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 643 [2020-10-12 14:10:36,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:10:36,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2184 [2020-10-12 14:10:36,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:36,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:10:36,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 491 [2020-10-12 14:10:36,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-12 14:10:36,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:36,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:10:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:36,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:36,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:36,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:10:36,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:10:36,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:10:36,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:36,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:10:36,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:10:36,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:10:36,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:36,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:10:36,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:36,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:36,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:36,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:10:36,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:10:36,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-12 14:10:36,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:36,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:10:36,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:10:36,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:10:36,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:36,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:10:36,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:36,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:37,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:37,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-12 14:10:37,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:10:37,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-12 14:10:37,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:37,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:10:37,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:10:37,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-12 14:10:37,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:37,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-12 14:10:37,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:37,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:37,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:37,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 14:10:37,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:10:37,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-12 14:10:37,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:37,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:10:37,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:10:37,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 14:10:37,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:37,456 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 348 proven. 2 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-10-12 14:10:37,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772742509] [2020-10-12 14:10:37,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:10:37,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:10:37,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472918228] [2020-10-12 14:10:37,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:10:37,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:10:37,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:10:37,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:10:37,458 INFO L87 Difference]: Start difference. First operand 19692 states and 24103 transitions. Second operand 7 states. [2020-10-12 14:10:50,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:10:50,332 INFO L93 Difference]: Finished difference Result 48447 states and 60290 transitions. [2020-10-12 14:10:50,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:10:50,340 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 629 [2020-10-12 14:10:50,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:10:50,444 INFO L225 Difference]: With dead ends: 48447 [2020-10-12 14:10:50,444 INFO L226 Difference]: Without dead ends: 29068 [2020-10-12 14:10:50,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:10:50,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29068 states. [2020-10-12 14:10:51,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29068 to 28725. [2020-10-12 14:10:51,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28725 states. [2020-10-12 14:10:51,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28725 states to 28725 states and 34637 transitions. [2020-10-12 14:10:51,155 INFO L78 Accepts]: Start accepts. Automaton has 28725 states and 34637 transitions. Word has length 629 [2020-10-12 14:10:51,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:10:51,156 INFO L479 AbstractCegarLoop]: Abstraction has 28725 states and 34637 transitions. [2020-10-12 14:10:51,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:10:51,156 INFO L276 IsEmpty]: Start isEmpty. Operand 28725 states and 34637 transitions. [2020-10-12 14:10:51,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2020-10-12 14:10:51,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:10:51,178 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:10:51,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 14:10:51,178 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:10:51,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:10:51,179 INFO L82 PathProgramCache]: Analyzing trace with hash -383260793, now seen corresponding path program 1 times [2020-10-12 14:10:51,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:10:51,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426480431] [2020-10-12 14:10:51,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:10:51,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:51,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:51,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:53,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:53,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:55,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:55,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 652 [2020-10-12 14:10:55,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:10:55,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3764 [2020-10-12 14:10:55,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:55,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 14:10:55,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-12 14:10:55,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 355 [2020-10-12 14:10:55,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:55,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:10:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:55,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:55,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:55,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:10:55,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:10:55,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 14:10:55,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:55,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:10:55,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:10:55,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:10:55,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:55,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:10:55,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:55,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:55,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:55,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:10:55,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:10:55,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-12 14:10:55,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:55,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:10:55,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:10:55,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-12 14:10:55,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:55,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:10:55,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:55,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:55,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:55,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:10:55,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:10:55,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-12 14:10:55,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:55,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:10:55,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:10:55,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-12 14:10:55,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:55,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-12 14:10:55,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:10:55,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:10:56,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:10:56,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-12 14:10:56,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:10:56,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-12 14:10:56,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:10:56,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:10:56,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:10:56,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-12 14:10:56,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:10:56,484 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 336 proven. 239 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 14:10:56,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426480431] [2020-10-12 14:10:56,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:10:56,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 14:10:56,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186684007] [2020-10-12 14:10:56,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 14:10:56,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:10:56,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 14:10:56,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-12 14:10:56,486 INFO L87 Difference]: Start difference. First operand 28725 states and 34637 transitions. Second operand 9 states.