/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:00:59,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:00:59,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:00:59,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:00:59,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:00:59,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:00:59,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:00:59,051 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:00:59,053 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:00:59,054 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:00:59,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:00:59,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:00:59,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:00:59,058 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:00:59,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:00:59,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:00:59,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:00:59,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:00:59,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:00:59,068 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:00:59,070 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:00:59,072 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:00:59,073 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:00:59,074 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:00:59,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:00:59,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:00:59,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:00:59,079 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:00:59,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:00:59,080 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:00:59,081 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:00:59,082 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:00:59,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:00:59,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:00:59,085 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:00:59,085 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:00:59,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:00:59,086 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:00:59,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:00:59,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:00:59,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:00:59,089 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 09:00:59,117 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:00:59,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:00:59,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:00:59,120 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:00:59,120 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:00:59,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:00:59,120 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:00:59,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:00:59,121 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:00:59,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:00:59,121 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:00:59,121 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:00:59,121 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:00:59,122 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:00:59,122 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:00:59,122 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:00:59,122 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:00:59,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:00:59,123 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:00:59,123 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:00:59,123 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:00:59,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:00:59,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:00:59,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:00:59,124 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:00:59,124 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:00:59,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:00:59,125 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:00:59,125 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:00:59,125 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:00:59,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:00:59,532 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:00:59,538 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:00:59,540 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:00:59,541 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:00:59,542 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label17.c [2020-10-13 09:00:59,626 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f278817d/1acc8fd57a5540f19f5c5bce8d44d842/FLAGc3d3cc60b [2020-10-13 09:01:00,425 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:01:00,426 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label17.c [2020-10-13 09:01:00,472 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f278817d/1acc8fd57a5540f19f5c5bce8d44d842/FLAGc3d3cc60b [2020-10-13 09:01:00,496 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f278817d/1acc8fd57a5540f19f5c5bce8d44d842 [2020-10-13 09:01:00,512 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:01:00,515 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:01:00,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:01:00,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:01:00,522 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:01:00,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:01:00" (1/1) ... [2020-10-13 09:01:00,528 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@774b42cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:00, skipping insertion in model container [2020-10-13 09:01:00,528 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:01:00" (1/1) ... [2020-10-13 09:01:00,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:01:00,638 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:01:01,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:01:01,910 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:01:02,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:01:02,338 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:01:02,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:02 WrapperNode [2020-10-13 09:01:02,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:01:02,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:01:02,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:01:02,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:01:02,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:02" (1/1) ... [2020-10-13 09:01:02,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:02" (1/1) ... [2020-10-13 09:01:02,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:02" (1/1) ... [2020-10-13 09:01:02,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:02" (1/1) ... [2020-10-13 09:01:02,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:02" (1/1) ... [2020-10-13 09:01:02,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:02" (1/1) ... [2020-10-13 09:01:02,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:02" (1/1) ... [2020-10-13 09:01:02,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:01:02,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:01:02,546 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:01:02,546 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:01:02,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:01:02,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:01:02,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:01:02,666 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:01:02,666 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:01:02,666 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:01:02,667 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:01:02,668 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:01:02,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:01:02,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:01:02,669 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:01:02,670 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:01:02,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:01:02,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:01:09,157 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:01:09,157 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:01:09,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:01:09 BoogieIcfgContainer [2020-10-13 09:01:09,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:01:09,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:01:09,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:01:09,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:01:09,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:01:00" (1/3) ... [2020-10-13 09:01:09,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c732608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:01:09, skipping insertion in model container [2020-10-13 09:01:09,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:02" (2/3) ... [2020-10-13 09:01:09,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c732608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:01:09, skipping insertion in model container [2020-10-13 09:01:09,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:01:09" (3/3) ... [2020-10-13 09:01:09,179 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label17.c [2020-10-13 09:01:09,194 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:01:09,206 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:01:09,222 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:01:09,254 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:01:09,254 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:01:09,254 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:01:09,255 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:01:09,255 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:01:09,255 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:01:09,255 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:01:09,255 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:01:09,286 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-13 09:01:09,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 09:01:09,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:01:09,299 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] [2020-10-13 09:01:09,299 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:01:09,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:01:09,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1566506531, now seen corresponding path program 1 times [2020-10-13 09:01:09,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:01:09,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787448092] [2020-10-13 09:01:09,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:01:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:09,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:10,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:10,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:01:10,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:10,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 483 [2020-10-13 09:01:10,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:10,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:01:10,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:01:10,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:01:10,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:01:10,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:01:10,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:10,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:10,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:10,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:01:10,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:10,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 09:01:10,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:10,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:01:10,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:10,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:01:10,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:01:10,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:01:10,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787448092] [2020-10-13 09:01:10,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:01:10,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 09:01:10,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500985454] [2020-10-13 09:01:10,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:01:10,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:01:10,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:01:10,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:01:10,303 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 5 states. [2020-10-13 09:01:19,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:01:19,430 INFO L93 Difference]: Finished difference Result 1584 states and 2883 transitions. [2020-10-13 09:01:19,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:01:19,434 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-13 09:01:19,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:01:19,464 INFO L225 Difference]: With dead ends: 1584 [2020-10-13 09:01:19,464 INFO L226 Difference]: Without dead ends: 1049 [2020-10-13 09:01:19,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:01:19,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2020-10-13 09:01:19,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 1024. [2020-10-13 09:01:19,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-10-13 09:01:19,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1566 transitions. [2020-10-13 09:01:19,622 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1566 transitions. Word has length 69 [2020-10-13 09:01:19,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:01:19,624 INFO L479 AbstractCegarLoop]: Abstraction has 1024 states and 1566 transitions. [2020-10-13 09:01:19,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:01:19,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1566 transitions. [2020-10-13 09:01:19,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-13 09:01:19,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:01:19,635 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:01:19,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:01:19,636 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:01:19,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:01:19,637 INFO L82 PathProgramCache]: Analyzing trace with hash 2129337345, now seen corresponding path program 1 times [2020-10-13 09:01:19,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:01:19,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489313000] [2020-10-13 09:01:19,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:01:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:19,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:19,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:20,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:21,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:22,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:22,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 09:01:22,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:01:22,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2697 [2020-10-13 09:01:22,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:22,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:01:22,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 09:01:22,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 09:01:22,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:01:22,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:01:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:22,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:22,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:22,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:01:22,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:22,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:01:22,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:22,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:01:22,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:22,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:01:22,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:01:22,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:01:22,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:22,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:22,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:22,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:01:22,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:22,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-13 09:01:22,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:22,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:01:22,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:22,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 09:01:22,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:01:22,937 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:01:22,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489313000] [2020-10-13 09:01:22,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:01:22,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:01:22,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788604484] [2020-10-13 09:01:22,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:01:22,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:01:22,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:01:22,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:01:22,944 INFO L87 Difference]: Start difference. First operand 1024 states and 1566 transitions. Second operand 5 states. [2020-10-13 09:01:30,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:01:30,667 INFO L93 Difference]: Finished difference Result 1756 states and 2725 transitions. [2020-10-13 09:01:30,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:01:30,668 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-10-13 09:01:30,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:01:30,682 INFO L225 Difference]: With dead ends: 1756 [2020-10-13 09:01:30,682 INFO L226 Difference]: Without dead ends: 1030 [2020-10-13 09:01:30,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:01:30,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2020-10-13 09:01:30,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 1024. [2020-10-13 09:01:30,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-10-13 09:01:30,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1563 transitions. [2020-10-13 09:01:30,745 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1563 transitions. Word has length 141 [2020-10-13 09:01:30,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:01:30,748 INFO L479 AbstractCegarLoop]: Abstraction has 1024 states and 1563 transitions. [2020-10-13 09:01:30,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:01:30,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1563 transitions. [2020-10-13 09:01:30,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-13 09:01:30,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:01:30,761 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:01:30,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:01:30,762 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:01:30,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:01:30,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1238606839, now seen corresponding path program 1 times [2020-10-13 09:01:30,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:01:30,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719169848] [2020-10-13 09:01:30,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:01:30,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:30,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:31,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:31,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:32,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:32,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-13 09:01:32,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:01:32,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1857 [2020-10-13 09:01:32,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:32,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:01:32,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 09:01:32,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:01:32,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:32,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:01:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:32,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:32,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:32,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:01:32,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:32,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:01:32,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:32,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:01:32,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:32,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:01:32,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:32,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:01:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:32,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:32,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:32,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:01:32,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:32,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-13 09:01:32,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:32,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:01:32,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:32,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:01:32,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:01:33,050 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:01:33,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719169848] [2020-10-13 09:01:33,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:01:33,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:01:33,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234943906] [2020-10-13 09:01:33,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:01:33,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:01:33,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:01:33,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:01:33,055 INFO L87 Difference]: Start difference. First operand 1024 states and 1563 transitions. Second operand 5 states. [2020-10-13 09:01:40,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:01:40,066 INFO L93 Difference]: Finished difference Result 1752 states and 2716 transitions. [2020-10-13 09:01:40,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:01:40,073 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-13 09:01:40,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:01:40,085 INFO L225 Difference]: With dead ends: 1752 [2020-10-13 09:01:40,086 INFO L226 Difference]: Without dead ends: 1030 [2020-10-13 09:01:40,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:01:40,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2020-10-13 09:01:40,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 1024. [2020-10-13 09:01:40,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-10-13 09:01:40,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1560 transitions. [2020-10-13 09:01:40,130 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1560 transitions. Word has length 145 [2020-10-13 09:01:40,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:01:40,131 INFO L479 AbstractCegarLoop]: Abstraction has 1024 states and 1560 transitions. [2020-10-13 09:01:40,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:01:40,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1560 transitions. [2020-10-13 09:01:40,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-13 09:01:40,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:01:40,133 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:01:40,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:01:40,134 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:01:40,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:01:40,134 INFO L82 PathProgramCache]: Analyzing trace with hash 290774033, now seen corresponding path program 1 times [2020-10-13 09:01:40,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:01:40,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145724236] [2020-10-13 09:01:40,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:01:40,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:40,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:40,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:41,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:41,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-13 09:01:41,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:01:41,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1091 [2020-10-13 09:01:41,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:41,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:01:41,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 09:01:41,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 09:01:41,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:41,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:01:41,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:41,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:41,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:41,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:01:41,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:41,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:01:41,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:41,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:01:41,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:41,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:01:41,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:41,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:01:41,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:41,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:41,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:41,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:01:41,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:41,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 09:01:41,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:41,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:01:41,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:41,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:01:41,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:41,504 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:01:41,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1145724236] [2020-10-13 09:01:41,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:01:41,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:01:41,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471117602] [2020-10-13 09:01:41,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:01:41,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:01:41,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:01:41,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:01:41,509 INFO L87 Difference]: Start difference. First operand 1024 states and 1560 transitions. Second operand 5 states. [2020-10-13 09:01:53,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:01:53,825 INFO L93 Difference]: Finished difference Result 2422 states and 3806 transitions. [2020-10-13 09:01:53,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:01:53,826 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-13 09:01:53,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:01:53,838 INFO L225 Difference]: With dead ends: 2422 [2020-10-13 09:01:53,838 INFO L226 Difference]: Without dead ends: 1716 [2020-10-13 09:01:53,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:01:53,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2020-10-13 09:01:53,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1705. [2020-10-13 09:01:53,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1705 states. [2020-10-13 09:01:53,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1705 states to 1705 states and 2567 transitions. [2020-10-13 09:01:53,895 INFO L78 Accepts]: Start accepts. Automaton has 1705 states and 2567 transitions. Word has length 149 [2020-10-13 09:01:53,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:01:53,897 INFO L479 AbstractCegarLoop]: Abstraction has 1705 states and 2567 transitions. [2020-10-13 09:01:53,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:01:53,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1705 states and 2567 transitions. [2020-10-13 09:01:53,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-13 09:01:53,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:01:53,901 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:01:53,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:01:53,902 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:01:53,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:01:53,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1571300643, now seen corresponding path program 1 times [2020-10-13 09:01:53,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:01:53,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308880313] [2020-10-13 09:01:53,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:01:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:53,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:54,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:54,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 09:01:54,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:54,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-10-13 09:01:54,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:54,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:01:54,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:01:54,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-13 09:01:54,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:54,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:01:54,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:54,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:54,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:54,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:01:54,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:54,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:01:54,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:54,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:01:54,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:54,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:01:54,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:54,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:01:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:54,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:54,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:54,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:01:54,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:54,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-13 09:01:54,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:54,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:01:54,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:01:54,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 09:01:54,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:54,633 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:01:54,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308880313] [2020-10-13 09:01:54,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:01:54,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 09:01:54,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510868709] [2020-10-13 09:01:54,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:01:54,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:01:54,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:01:54,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:01:54,636 INFO L87 Difference]: Start difference. First operand 1705 states and 2567 transitions. Second operand 7 states. [2020-10-13 09:02:04,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:02:04,872 INFO L93 Difference]: Finished difference Result 4066 states and 6206 transitions. [2020-10-13 09:02:04,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:02:04,875 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 152 [2020-10-13 09:02:04,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:02:04,888 INFO L225 Difference]: With dead ends: 4066 [2020-10-13 09:02:04,889 INFO L226 Difference]: Without dead ends: 2367 [2020-10-13 09:02:04,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:02:04,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2020-10-13 09:02:04,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 2334. [2020-10-13 09:02:04,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2334 states. [2020-10-13 09:02:04,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3209 transitions. [2020-10-13 09:02:04,963 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3209 transitions. Word has length 152 [2020-10-13 09:02:04,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:02:04,963 INFO L479 AbstractCegarLoop]: Abstraction has 2334 states and 3209 transitions. [2020-10-13 09:02:04,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:02:04,963 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3209 transitions. [2020-10-13 09:02:04,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-13 09:02:04,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:02:04,966 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:02:04,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:02:04,967 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:02:04,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:02:04,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1604771147, now seen corresponding path program 1 times [2020-10-13 09:02:04,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:02:04,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683181101] [2020-10-13 09:02:04,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:02:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:05,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:05,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:06,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:06,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 09:02:06,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:02:06,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1150 [2020-10-13 09:02:06,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:06,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:02:06,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-13 09:02:06,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 09:02:06,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:02:06,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:02:06,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:06,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:06,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:06,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:02:06,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:06,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:02:06,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:06,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:02:06,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:06,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:02:06,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:02:06,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:02:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:06,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:06,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:06,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 09:02:06,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:06,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-13 09:02:06,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:06,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:02:06,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:06,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-13 09:02:06,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:06,497 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:02:06,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683181101] [2020-10-13 09:02:06,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:02:06,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:02:06,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639213514] [2020-10-13 09:02:06,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:02:06,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:02:06,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:02:06,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:02:06,501 INFO L87 Difference]: Start difference. First operand 2334 states and 3209 transitions. Second operand 5 states. [2020-10-13 09:02:16,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:02:16,211 INFO L93 Difference]: Finished difference Result 5935 states and 8497 transitions. [2020-10-13 09:02:16,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:02:16,215 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-13 09:02:16,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:02:16,237 INFO L225 Difference]: With dead ends: 5935 [2020-10-13 09:02:16,237 INFO L226 Difference]: Without dead ends: 3914 [2020-10-13 09:02:16,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:02:16,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3914 states. [2020-10-13 09:02:16,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3914 to 3600. [2020-10-13 09:02:16,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3600 states. [2020-10-13 09:02:16,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3600 states to 3600 states and 4807 transitions. [2020-10-13 09:02:16,359 INFO L78 Accepts]: Start accepts. Automaton has 3600 states and 4807 transitions. Word has length 168 [2020-10-13 09:02:16,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:02:16,359 INFO L479 AbstractCegarLoop]: Abstraction has 3600 states and 4807 transitions. [2020-10-13 09:02:16,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:02:16,359 INFO L276 IsEmpty]: Start isEmpty. Operand 3600 states and 4807 transitions. [2020-10-13 09:02:16,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-13 09:02:16,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:02:16,365 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:02:16,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:02:16,365 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:02:16,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:02:16,366 INFO L82 PathProgramCache]: Analyzing trace with hash -851278336, now seen corresponding path program 1 times [2020-10-13 09:02:16,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:02:16,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [6279184] [2020-10-13 09:02:16,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:02:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:16,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:16,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:17,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:19,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:19,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-13 09:02:19,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:02:19,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2909 [2020-10-13 09:02:19,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:19,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:02:19,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-13 09:02:19,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 09:02:19,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:19,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:02:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:19,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:19,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:19,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:02:19,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:19,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:02:19,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:19,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:02:19,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:19,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:02:19,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:19,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:02:19,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:19,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:19,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:19,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:02:19,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:19,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-13 09:02:19,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:19,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:02:19,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:19,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-13 09:02:19,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:19,942 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:02:19,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [6279184] [2020-10-13 09:02:19,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:02:19,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:02:19,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459268801] [2020-10-13 09:02:19,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:02:19,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:02:19,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:02:19,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:02:19,946 INFO L87 Difference]: Start difference. First operand 3600 states and 4807 transitions. Second operand 5 states. [2020-10-13 09:02:31,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:02:31,147 INFO L93 Difference]: Finished difference Result 8124 states and 11182 transitions. [2020-10-13 09:02:31,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:02:31,149 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 269 [2020-10-13 09:02:31,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:02:31,170 INFO L225 Difference]: With dead ends: 8124 [2020-10-13 09:02:31,171 INFO L226 Difference]: Without dead ends: 5460 [2020-10-13 09:02:31,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:02:31,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5460 states. [2020-10-13 09:02:31,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5460 to 5151. [2020-10-13 09:02:31,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5151 states. [2020-10-13 09:02:31,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5151 states to 5151 states and 6617 transitions. [2020-10-13 09:02:31,295 INFO L78 Accepts]: Start accepts. Automaton has 5151 states and 6617 transitions. Word has length 269 [2020-10-13 09:02:31,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:02:31,296 INFO L479 AbstractCegarLoop]: Abstraction has 5151 states and 6617 transitions. [2020-10-13 09:02:31,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:02:31,296 INFO L276 IsEmpty]: Start isEmpty. Operand 5151 states and 6617 transitions. [2020-10-13 09:02:31,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-13 09:02:31,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:02:31,306 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:02:31,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:02:31,306 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:02:31,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:02:31,307 INFO L82 PathProgramCache]: Analyzing trace with hash -123962692, now seen corresponding path program 1 times [2020-10-13 09:02:31,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:02:31,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184640138] [2020-10-13 09:02:31,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:02:31,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:31,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:31,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:31,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:32,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:32,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:36,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:36,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 371 [2020-10-13 09:02:36,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:02:36,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5101 [2020-10-13 09:02:36,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:36,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:02:36,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 302 [2020-10-13 09:02:36,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 09:02:36,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:36,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:02:36,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:36,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:36,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:36,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:02:36,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:36,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:02:36,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:36,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:02:36,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:36,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:02:36,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:36,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:02:36,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:36,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:36,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:36,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:02:36,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:36,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:02:36,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:36,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:02:36,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:36,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:02:36,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:36,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 09:02:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:36,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:36,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:36,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:02:36,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:36,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 09:02:36,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:36,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:02:36,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:36,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:02:36,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:36,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-10-13 09:02:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:36,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:36,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:36,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 09:02:36,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:36,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-13 09:02:36,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:36,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:02:36,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:36,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 09:02:36,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:02:37,096 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 189 proven. 3 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2020-10-13 09:02:37,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184640138] [2020-10-13 09:02:37,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:02:37,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:02:37,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890804492] [2020-10-13 09:02:37,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:02:37,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:02:37,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:02:37,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:02:37,099 INFO L87 Difference]: Start difference. First operand 5151 states and 6617 transitions. Second operand 5 states. [2020-10-13 09:02:45,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:02:45,265 INFO L93 Difference]: Finished difference Result 9067 states and 11863 transitions. [2020-10-13 09:02:45,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:02:45,268 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 357 [2020-10-13 09:02:45,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:02:45,286 INFO L225 Difference]: With dead ends: 9067 [2020-10-13 09:02:45,286 INFO L226 Difference]: Without dead ends: 5151 [2020-10-13 09:02:45,295 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 [2020-10-13 09:02:45,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5151 states. [2020-10-13 09:02:45,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5151 to 5151. [2020-10-13 09:02:45,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5151 states. [2020-10-13 09:02:45,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5151 states to 5151 states and 6613 transitions. [2020-10-13 09:02:45,400 INFO L78 Accepts]: Start accepts. Automaton has 5151 states and 6613 transitions. Word has length 357 [2020-10-13 09:02:45,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:02:45,401 INFO L479 AbstractCegarLoop]: Abstraction has 5151 states and 6613 transitions. [2020-10-13 09:02:45,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:02:45,401 INFO L276 IsEmpty]: Start isEmpty. Operand 5151 states and 6613 transitions. [2020-10-13 09:02:45,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2020-10-13 09:02:45,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:02:45,409 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:02:45,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:02:45,410 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:02:45,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:02:45,410 INFO L82 PathProgramCache]: Analyzing trace with hash -837940970, now seen corresponding path program 1 times [2020-10-13 09:02:45,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:02:45,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319160073] [2020-10-13 09:02:45,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:02:45,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:45,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:45,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:45,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:48,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:50,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:50,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 372 [2020-10-13 09:02:50,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:02:50,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 09:02:50,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:50,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:02:50,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 09:02:50,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 09:02:50,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:02:50,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:02:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:50,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:50,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:50,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:02:50,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:50,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:02:50,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:50,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:02:50,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:50,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:02:50,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:50,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:02:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:50,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:50,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:50,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:02:50,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:50,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-13 09:02:50,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:50,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:02:50,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:50,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 09:02:50,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 45 [2020-10-13 09:02:50,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 09:02:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:50,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:51,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:51,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:51,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:02:51,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:02:51,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-13 09:02:51,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:51,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:02:51,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:02:51,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-13 09:02:51,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:02:51,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-10-13 09:02:51,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:51,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:51,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:51,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:02:51,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:51,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 09:02:51,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:51,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:02:51,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 09:02:51,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:02:51,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:51,590 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 282 proven. 82 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-13 09:02:51,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319160073] [2020-10-13 09:02:51,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:02:51,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:02:51,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746046054] [2020-10-13 09:02:51,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:02:51,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:02:51,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:02:51,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:02:51,600 INFO L87 Difference]: Start difference. First operand 5151 states and 6613 transitions. Second operand 7 states. [2020-10-13 09:03:00,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:03:00,700 INFO L93 Difference]: Finished difference Result 10243 states and 13720 transitions. [2020-10-13 09:03:00,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:03:00,702 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 358 [2020-10-13 09:03:00,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:03:00,726 INFO L225 Difference]: With dead ends: 10243 [2020-10-13 09:03:00,727 INFO L226 Difference]: Without dead ends: 5312 [2020-10-13 09:03:00,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:03:00,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5312 states. [2020-10-13 09:03:00,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5312 to 5214. [2020-10-13 09:03:00,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5214 states. [2020-10-13 09:03:00,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5214 states to 5214 states and 6669 transitions. [2020-10-13 09:03:00,875 INFO L78 Accepts]: Start accepts. Automaton has 5214 states and 6669 transitions. Word has length 358 [2020-10-13 09:03:00,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:03:00,875 INFO L479 AbstractCegarLoop]: Abstraction has 5214 states and 6669 transitions. [2020-10-13 09:03:00,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:03:00,876 INFO L276 IsEmpty]: Start isEmpty. Operand 5214 states and 6669 transitions. [2020-10-13 09:03:00,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-10-13 09:03:00,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:03:00,884 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:03:00,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:03:00,884 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:03:00,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:03:00,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1641082075, now seen corresponding path program 1 times [2020-10-13 09:03:00,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:03:00,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788433311] [2020-10-13 09:03:00,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:03:00,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:00,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:01,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:01,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:05,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:05,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:05,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 377 [2020-10-13 09:03:05,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:03:05,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 09:03:05,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:05,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:03:05,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 308 [2020-10-13 09:03:05,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 09:03:05,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:06,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:03:06,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:06,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:06,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:06,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:03:06,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:06,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 09:03:06,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:06,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:06,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:06,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:06,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:06,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:03:06,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:06,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:06,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:06,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:03:06,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:06,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 09:03:06,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:06,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:06,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:06,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:06,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:06,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:03:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:06,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:06,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:06,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 09:03:06,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:06,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 09:03:06,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:06,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:03:06,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:06,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 09:03:06,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:06,702 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-13 09:03:06,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788433311] [2020-10-13 09:03:06,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:03:06,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:03:06,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472315950] [2020-10-13 09:03:06,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:03:06,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:03:06,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:03:06,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:03:06,704 INFO L87 Difference]: Start difference. First operand 5214 states and 6669 transitions. Second operand 5 states. [2020-10-13 09:03:15,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:03:15,100 INFO L93 Difference]: Finished difference Result 9864 states and 12741 transitions. [2020-10-13 09:03:15,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:03:15,103 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 365 [2020-10-13 09:03:15,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:03:15,125 INFO L225 Difference]: With dead ends: 9864 [2020-10-13 09:03:15,126 INFO L226 Difference]: Without dead ends: 4905 [2020-10-13 09:03:15,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:03:15,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4905 states. [2020-10-13 09:03:15,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4905 to 4901. [2020-10-13 09:03:15,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4901 states. [2020-10-13 09:03:15,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4901 states to 4901 states and 6287 transitions. [2020-10-13 09:03:15,254 INFO L78 Accepts]: Start accepts. Automaton has 4901 states and 6287 transitions. Word has length 365 [2020-10-13 09:03:15,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:03:15,255 INFO L479 AbstractCegarLoop]: Abstraction has 4901 states and 6287 transitions. [2020-10-13 09:03:15,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:03:15,255 INFO L276 IsEmpty]: Start isEmpty. Operand 4901 states and 6287 transitions. [2020-10-13 09:03:15,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2020-10-13 09:03:15,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:03:15,266 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:03:15,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:03:15,266 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:03:15,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:03:15,267 INFO L82 PathProgramCache]: Analyzing trace with hash -233536041, now seen corresponding path program 1 times [2020-10-13 09:03:15,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:03:15,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368054692] [2020-10-13 09:03:15,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:03:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:15,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:15,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:17,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:19,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:20,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:20,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 391 [2020-10-13 09:03:20,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:03:20,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4897 [2020-10-13 09:03:20,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:20,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:03:20,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 322 [2020-10-13 09:03:20,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 09:03:20,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:20,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:03:20,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:20,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:20,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:20,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:03:20,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:20,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:03:20,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:20,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:20,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:20,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:20,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:20,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:03:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:20,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:20,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:20,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:03:20,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:20,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 09:03:20,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:20,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:20,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:20,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:20,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:20,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:03:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:20,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:20,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:20,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:03:20,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:20,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 09:03:20,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:20,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:03:20,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:20,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-13 09:03:20,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:20,628 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-13 09:03:20,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368054692] [2020-10-13 09:03:20,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:03:20,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:03:20,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739594217] [2020-10-13 09:03:20,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:03:20,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:03:20,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:03:20,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:03:20,631 INFO L87 Difference]: Start difference. First operand 4901 states and 6287 transitions. Second operand 5 states. [2020-10-13 09:03:31,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:03:31,326 INFO L93 Difference]: Finished difference Result 12023 states and 15784 transitions. [2020-10-13 09:03:31,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:03:31,330 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 379 [2020-10-13 09:03:31,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:03:31,357 INFO L225 Difference]: With dead ends: 12023 [2020-10-13 09:03:31,357 INFO L226 Difference]: Without dead ends: 7435 [2020-10-13 09:03:31,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:03:31,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7435 states. [2020-10-13 09:03:31,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7435 to 7417. [2020-10-13 09:03:31,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7417 states. [2020-10-13 09:03:31,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7417 states to 7417 states and 9345 transitions. [2020-10-13 09:03:31,522 INFO L78 Accepts]: Start accepts. Automaton has 7417 states and 9345 transitions. Word has length 379 [2020-10-13 09:03:31,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:03:31,523 INFO L479 AbstractCegarLoop]: Abstraction has 7417 states and 9345 transitions. [2020-10-13 09:03:31,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:03:31,523 INFO L276 IsEmpty]: Start isEmpty. Operand 7417 states and 9345 transitions. [2020-10-13 09:03:31,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2020-10-13 09:03:31,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:03:31,537 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:03:31,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:03:31,538 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:03:31,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:03:31,538 INFO L82 PathProgramCache]: Analyzing trace with hash 557551719, now seen corresponding path program 1 times [2020-10-13 09:03:31,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:03:31,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415158729] [2020-10-13 09:03:31,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:03:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:31,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:31,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:31,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:33,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:36,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:36,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 439 [2020-10-13 09:03:36,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:03:36,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 09:03:36,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:36,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:03:36,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-10-13 09:03:36,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 09:03:36,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:36,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:03:36,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:36,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:36,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:36,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:03:36,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:36,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:03:36,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:36,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:36,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:36,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:36,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:36,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:03:36,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:36,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:36,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:36,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:03:36,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:36,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-13 09:03:36,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:36,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:03:36,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:36,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-13 09:03:36,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:36,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-13 09:03:36,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:36,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:36,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:37,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:37,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:03:37,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:03:37,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-10-13 09:03:37,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:37,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:03:37,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:03:37,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-13 09:03:37,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:37,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-10-13 09:03:37,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:37,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:37,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:37,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:03:37,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:37,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 09:03:37,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:37,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:37,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 09:03:37,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:37,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:37,480 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 298 proven. 82 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-13 09:03:37,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415158729] [2020-10-13 09:03:37,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:03:37,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:03:37,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581444265] [2020-10-13 09:03:37,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:03:37,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:03:37,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:03:37,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:03:37,483 INFO L87 Difference]: Start difference. First operand 7417 states and 9345 transitions. Second operand 7 states. [2020-10-13 09:03:46,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:03:46,993 INFO L93 Difference]: Finished difference Result 14729 states and 19196 transitions. [2020-10-13 09:03:46,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:03:46,995 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 425 [2020-10-13 09:03:46,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:03:47,029 INFO L225 Difference]: With dead ends: 14729 [2020-10-13 09:03:47,030 INFO L226 Difference]: Without dead ends: 7547 [2020-10-13 09:03:47,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:03:47,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7547 states. [2020-10-13 09:03:47,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7547 to 7463. [2020-10-13 09:03:47,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7463 states. [2020-10-13 09:03:47,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7463 states to 7463 states and 9137 transitions. [2020-10-13 09:03:47,244 INFO L78 Accepts]: Start accepts. Automaton has 7463 states and 9137 transitions. Word has length 425 [2020-10-13 09:03:47,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:03:47,244 INFO L479 AbstractCegarLoop]: Abstraction has 7463 states and 9137 transitions. [2020-10-13 09:03:47,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:03:47,244 INFO L276 IsEmpty]: Start isEmpty. Operand 7463 states and 9137 transitions. [2020-10-13 09:03:47,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2020-10-13 09:03:47,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:03:47,261 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:03:47,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:03:47,261 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:03:47,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:03:47,262 INFO L82 PathProgramCache]: Analyzing trace with hash 656985382, now seen corresponding path program 1 times [2020-10-13 09:03:47,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:03:47,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550344396] [2020-10-13 09:03:47,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:03:47,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:47,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:47,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:47,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:52,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:52,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 446 [2020-10-13 09:03:52,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:03:52,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 09:03:52,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:52,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:03:52,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-13 09:03:52,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 09:03:52,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:52,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:03:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:52,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:52,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:52,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:03:52,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:52,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:03:52,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:52,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:52,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:52,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:52,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:52,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:03:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:52,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:52,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:52,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:03:52,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:52,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 09:03:52,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:52,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:03:52,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:52,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-13 09:03:52,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:52,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:03:52,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:52,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:52,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:52,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:03:52,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:52,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 09:03:52,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:52,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:03:52,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:03:52,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 09:03:52,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:52,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-13 09:03:52,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:52,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:52,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:52,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:03:52,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:52,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:03:52,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:52,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:52,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 09:03:52,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:52,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:53,001 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 267 proven. 79 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-13 09:03:53,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1550344396] [2020-10-13 09:03:53,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:03:53,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:03:53,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571173063] [2020-10-13 09:03:53,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:03:53,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:03:53,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:03:53,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:03:53,004 INFO L87 Difference]: Start difference. First operand 7463 states and 9137 transitions. Second operand 8 states. [2020-10-13 09:04:01,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:04:01,922 INFO L93 Difference]: Finished difference Result 17815 states and 22691 transitions. [2020-10-13 09:04:01,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:04:01,926 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 432 [2020-10-13 09:04:01,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:04:01,981 INFO L225 Difference]: With dead ends: 17815 [2020-10-13 09:04:01,981 INFO L226 Difference]: Without dead ends: 10665 [2020-10-13 09:04:02,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-13 09:04:02,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10665 states. [2020-10-13 09:04:02,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10665 to 10619. [2020-10-13 09:04:02,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10619 states. [2020-10-13 09:04:02,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10619 states to 10619 states and 13208 transitions. [2020-10-13 09:04:02,394 INFO L78 Accepts]: Start accepts. Automaton has 10619 states and 13208 transitions. Word has length 432 [2020-10-13 09:04:02,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:04:02,395 INFO L479 AbstractCegarLoop]: Abstraction has 10619 states and 13208 transitions. [2020-10-13 09:04:02,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:04:02,396 INFO L276 IsEmpty]: Start isEmpty. Operand 10619 states and 13208 transitions. [2020-10-13 09:04:02,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2020-10-13 09:04:02,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:04:02,408 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:04:02,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:04:02,409 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:04:02,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:04:02,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1512887098, now seen corresponding path program 1 times [2020-10-13 09:04:02,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:04:02,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823249388] [2020-10-13 09:04:02,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:04:02,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:02,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:02,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:02,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:07,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:07,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 477 [2020-10-13 09:04:07,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:04:07,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-13 09:04:07,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:07,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:07,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 323 [2020-10-13 09:04:07,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 09:04:07,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:07,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:04:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:07,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:07,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:07,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:04:07,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:07,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:04:07,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:07,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:07,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:07,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:07,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:07,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:04:07,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:07,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:07,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:07,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:04:07,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:07,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 09:04:07,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:07,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:07,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:07,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:07,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:07,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:04:07,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:07,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:07,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:07,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:04:07,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:07,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 09:04:07,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:07,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:04:07,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:07,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-13 09:04:07,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:07,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-13 09:04:07,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:07,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:08,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:08,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:04:08,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:08,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 09:04:08,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:08,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:08,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:04:08,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 09:04:08,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:08,178 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 351 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-13 09:04:08,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823249388] [2020-10-13 09:04:08,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:04:08,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:04:08,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092831442] [2020-10-13 09:04:08,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:04:08,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:04:08,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:04:08,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:04:08,180 INFO L87 Difference]: Start difference. First operand 10619 states and 13208 transitions. Second operand 7 states. [2020-10-13 09:04:19,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:04:19,656 INFO L93 Difference]: Finished difference Result 22370 states and 29050 transitions. [2020-10-13 09:04:19,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:04:19,658 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 463 [2020-10-13 09:04:19,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:04:19,707 INFO L225 Difference]: With dead ends: 22370 [2020-10-13 09:04:19,708 INFO L226 Difference]: Without dead ends: 12064 [2020-10-13 09:04:19,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:04:19,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12064 states. [2020-10-13 09:04:20,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12064 to 12042. [2020-10-13 09:04:20,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12042 states. [2020-10-13 09:04:20,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12042 states to 12042 states and 15334 transitions. [2020-10-13 09:04:20,108 INFO L78 Accepts]: Start accepts. Automaton has 12042 states and 15334 transitions. Word has length 463 [2020-10-13 09:04:20,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:04:20,109 INFO L479 AbstractCegarLoop]: Abstraction has 12042 states and 15334 transitions. [2020-10-13 09:04:20,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:04:20,110 INFO L276 IsEmpty]: Start isEmpty. Operand 12042 states and 15334 transitions. [2020-10-13 09:04:20,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2020-10-13 09:04:20,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:04:20,119 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:04:20,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:04:20,120 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:04:20,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:04:20,120 INFO L82 PathProgramCache]: Analyzing trace with hash -743216681, now seen corresponding path program 1 times [2020-10-13 09:04:20,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:04:20,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605101574] [2020-10-13 09:04:20,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:04:20,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:20,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:20,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:20,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:20,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:23,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:25,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:25,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 492 [2020-10-13 09:04:25,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:04:25,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-13 09:04:25,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:25,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:25,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 337 [2020-10-13 09:04:25,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 09:04:25,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:25,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:04:25,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:25,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:25,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:25,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:04:25,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:25,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:04:25,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:25,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:25,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:25,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:25,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:25,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:04:25,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:25,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:25,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:25,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:04:25,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:25,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 09:04:25,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:25,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:25,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:25,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:25,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:25,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:04:25,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:25,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:25,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:25,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 09:04:25,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:25,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 09:04:25,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:25,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:04:25,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:25,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-13 09:04:25,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:25,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-13 09:04:25,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:25,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:25,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:25,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:04:25,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:25,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 09:04:25,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:25,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:25,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:04:25,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 09:04:25,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:25,854 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 351 proven. 2 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-13 09:04:25,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605101574] [2020-10-13 09:04:25,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:04:25,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:04:25,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307426883] [2020-10-13 09:04:25,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:04:25,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:04:25,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:04:25,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:04:25,856 INFO L87 Difference]: Start difference. First operand 12042 states and 15334 transitions. Second operand 7 states. [2020-10-13 09:04:38,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:04:38,584 INFO L93 Difference]: Finished difference Result 31537 states and 41968 transitions. [2020-10-13 09:04:38,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:04:38,587 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 478 [2020-10-13 09:04:38,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:04:38,668 INFO L225 Difference]: With dead ends: 31537 [2020-10-13 09:04:38,668 INFO L226 Difference]: Without dead ends: 19492 [2020-10-13 09:04:38,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:04:38,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19492 states. [2020-10-13 09:04:39,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19492 to 17901. [2020-10-13 09:04:39,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17901 states. [2020-10-13 09:04:39,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17901 states to 17901 states and 22585 transitions. [2020-10-13 09:04:39,230 INFO L78 Accepts]: Start accepts. Automaton has 17901 states and 22585 transitions. Word has length 478 [2020-10-13 09:04:39,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:04:39,232 INFO L479 AbstractCegarLoop]: Abstraction has 17901 states and 22585 transitions. [2020-10-13 09:04:39,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:04:39,232 INFO L276 IsEmpty]: Start isEmpty. Operand 17901 states and 22585 transitions. [2020-10-13 09:04:39,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2020-10-13 09:04:39,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:04:39,254 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:04:39,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:04:39,254 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:04:39,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:04:39,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1982209799, now seen corresponding path program 1 times [2020-10-13 09:04:39,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:04:39,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947852852] [2020-10-13 09:04:39,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:04:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:39,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:39,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:39,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:39,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:44,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:44,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 548 [2020-10-13 09:04:44,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:04:44,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 09:04:44,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:44,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:44,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 479 [2020-10-13 09:04:44,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 09:04:44,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:44,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:04:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:44,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:44,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:44,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:04:44,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:44,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:04:44,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:44,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:44,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:44,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:44,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:44,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:04:44,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:44,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:44,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:44,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:04:44,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:44,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 09:04:44,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:44,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:44,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:44,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:44,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:44,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:04:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:44,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:44,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:44,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:04:44,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:44,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 09:04:44,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:44,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:44,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:44,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:44,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:44,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-13 09:04:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:44,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:44,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:44,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-13 09:04:44,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:44,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 09:04:44,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:44,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:04:44,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:44,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-13 09:04:44,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0