/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/Problem17_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:25:56,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:25:56,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:25:56,092 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:25:56,092 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:25:56,093 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:25:56,095 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:25:56,096 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:25:56,098 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:25:56,099 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:25:56,100 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:25:56,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:25:56,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:25:56,105 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:25:56,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:25:56,110 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:25:56,112 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:25:56,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:25:56,117 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:25:56,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:25:56,125 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:25:56,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:25:56,128 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:25:56,129 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:25:56,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:25:56,131 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:25:56,132 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:25:56,135 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:25:56,136 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:25:56,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:25:56,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:25:56,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:25:56,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:25:56,141 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:25:56,142 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:25:56,142 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:25:56,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:25:56,143 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:25:56,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:25:56,144 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:25:56,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:25:56,146 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 09:25:56,202 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:25:56,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:25:56,203 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:25:56,204 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:25:56,204 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:25:56,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:25:56,204 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:25:56,205 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:25:56,205 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:25:56,205 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:25:56,205 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:25:56,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:25:56,205 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:25:56,206 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:25:56,206 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:25:56,206 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:25:56,206 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:25:56,206 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:25:56,207 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:25:56,207 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:25:56,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:25:56,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:25:56,208 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:25:56,208 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:25:56,208 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:25:56,209 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:25:56,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:25:56,209 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:25:56,209 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:25:56,209 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 09:25:56,565 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:25:56,584 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:25:56,587 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:25:56,589 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:25:56,589 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:25:56,590 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label00.c [2020-10-13 09:25:56,656 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f9b63043/ea82808cf91d43a38af128f626419894/FLAG107f1821d [2020-10-13 09:25:57,381 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:25:57,382 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label00.c [2020-10-13 09:25:57,411 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f9b63043/ea82808cf91d43a38af128f626419894/FLAG107f1821d [2020-10-13 09:25:57,464 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f9b63043/ea82808cf91d43a38af128f626419894 [2020-10-13 09:25:57,474 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:25:57,476 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:25:57,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:25:57,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:25:57,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:25:57,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:25:57" (1/1) ... [2020-10-13 09:25:57,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fa7080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:25:57, skipping insertion in model container [2020-10-13 09:25:57,486 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:25:57" (1/1) ... [2020-10-13 09:25:57,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:25:57,587 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:25:58,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:25:58,865 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:25:59,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:25:59,334 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:25:59,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:25:59 WrapperNode [2020-10-13 09:25:59,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:25:59,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:25:59,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:25:59,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:25:59,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:25:59" (1/1) ... [2020-10-13 09:25:59,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:25:59" (1/1) ... [2020-10-13 09:25:59,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:25:59" (1/1) ... [2020-10-13 09:25:59,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:25:59" (1/1) ... [2020-10-13 09:25:59,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:25:59" (1/1) ... [2020-10-13 09:25:59,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:25:59" (1/1) ... [2020-10-13 09:25:59,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:25:59" (1/1) ... [2020-10-13 09:25:59,569 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:25:59,569 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:25:59,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:25:59,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:25:59,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:25:59" (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 09:25:59,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:25:59,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:25:59,659 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:25:59,660 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:25:59,660 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:25:59,660 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:25:59,661 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:25:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:25:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:25:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:25:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:25:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:25:59,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:26:08,372 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:26:08,374 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:26:08,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:26:08 BoogieIcfgContainer [2020-10-13 09:26:08,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:26:08,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:26:08,394 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:26:08,398 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:26:08,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:25:57" (1/3) ... [2020-10-13 09:26:08,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716395f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:26:08, skipping insertion in model container [2020-10-13 09:26:08,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:25:59" (2/3) ... [2020-10-13 09:26:08,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716395f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:26:08, skipping insertion in model container [2020-10-13 09:26:08,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:26:08" (3/3) ... [2020-10-13 09:26:08,405 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label00.c [2020-10-13 09:26:08,416 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:26:08,429 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:26:08,444 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:26:08,474 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:26:08,474 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:26:08,474 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:26:08,474 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:26:08,475 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:26:08,475 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:26:08,475 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:26:08,475 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:26:08,506 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-13 09:26:08,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 09:26:08,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:26:08,517 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] [2020-10-13 09:26:08,517 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:26:08,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:26:08,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1065858481, now seen corresponding path program 1 times [2020-10-13 09:26:08,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:26:08,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108705305] [2020-10-13 09:26:08,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:26:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:08,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:09,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:09,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 09:26:09,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:09,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 540 [2020-10-13 09:26:09,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:09,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:26:09,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:26:09,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 09:26:09,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 09:26:09,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:26:09,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:09,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:09,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:09,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:26:09,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:09,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 09:26:09,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:09,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:26:09,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:09,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:26:09,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:09,497 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 09:26:09,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108705305] [2020-10-13 09:26:09,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:26:09,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:26:09,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812031952] [2020-10-13 09:26:09,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:26:09,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:26:09,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:26:09,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:26:09,526 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-13 09:26:19,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:26:19,446 INFO L93 Difference]: Finished difference Result 1689 states and 3086 transitions. [2020-10-13 09:26:19,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:26:19,449 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-10-13 09:26:19,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:26:19,474 INFO L225 Difference]: With dead ends: 1689 [2020-10-13 09:26:19,474 INFO L226 Difference]: Without dead ends: 1009 [2020-10-13 09:26:19,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:26:19,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2020-10-13 09:26:19,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 991. [2020-10-13 09:26:19,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 991 states. [2020-10-13 09:26:19,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1526 transitions. [2020-10-13 09:26:19,597 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1526 transitions. Word has length 60 [2020-10-13 09:26:19,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:26:19,598 INFO L479 AbstractCegarLoop]: Abstraction has 991 states and 1526 transitions. [2020-10-13 09:26:19,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:26:19,598 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1526 transitions. [2020-10-13 09:26:19,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-13 09:26:19,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:26:19,605 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, 1, 1, 1, 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 09:26:19,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:26:19,606 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:26:19,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:26:19,606 INFO L82 PathProgramCache]: Analyzing trace with hash 856983708, now seen corresponding path program 1 times [2020-10-13 09:26:19,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:26:19,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607527404] [2020-10-13 09:26:19,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:26:19,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:19,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:20,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:20,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:20,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:20,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 09:26:20,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:26:20,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1248 [2020-10-13 09:26:20,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:20,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:26:20,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 09:26:20,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 09:26:20,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:26:21,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:26:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:21,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:21,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:21,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:26:21,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:21,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:26:21,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:21,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:21,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:21,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:21,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:21,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:26:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:21,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:21,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:21,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:26:21,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:21,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 09:26:21,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:21,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:26:21,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:21,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:26:21,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:21,169 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:26:21,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607527404] [2020-10-13 09:26:21,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:26:21,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:26:21,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587183373] [2020-10-13 09:26:21,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:26:21,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:26:21,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:26:21,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:26:21,173 INFO L87 Difference]: Start difference. First operand 991 states and 1526 transitions. Second operand 5 states. [2020-10-13 09:26:33,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:26:33,319 INFO L93 Difference]: Finished difference Result 2899 states and 4501 transitions. [2020-10-13 09:26:33,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:26:33,320 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-10-13 09:26:33,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:26:33,333 INFO L225 Difference]: With dead ends: 2899 [2020-10-13 09:26:33,333 INFO L226 Difference]: Without dead ends: 1914 [2020-10-13 09:26:33,338 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 09:26:33,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2020-10-13 09:26:33,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1889. [2020-10-13 09:26:33,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1889 states. [2020-10-13 09:26:33,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 2683 transitions. [2020-10-13 09:26:33,468 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 2683 transitions. Word has length 131 [2020-10-13 09:26:33,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:26:33,469 INFO L479 AbstractCegarLoop]: Abstraction has 1889 states and 2683 transitions. [2020-10-13 09:26:33,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:26:33,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 2683 transitions. [2020-10-13 09:26:33,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 09:26:33,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:26:33,475 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, 1, 1, 1, 1, 1, 1, 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 09:26:33,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:26:33,476 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:26:33,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:26:33,476 INFO L82 PathProgramCache]: Analyzing trace with hash 264021352, now seen corresponding path program 1 times [2020-10-13 09:26:33,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:26:33,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044459107] [2020-10-13 09:26:33,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:26:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:33,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:33,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:34,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:34,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 09:26:34,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:26:34,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1276 [2020-10-13 09:26:34,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:34,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 09:26:34,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:26:34,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 09:26:34,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:26:35,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:26:35,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:35,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:35,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:35,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:26:35,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:35,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:26:35,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:35,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:26:35,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:35,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:26:35,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:35,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:26:35,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:35,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:35,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:35,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:26:35,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:35,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-13 09:26:35,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:35,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 09:26:35,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:26:35,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:26:35,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:35,511 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 25 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:26:35,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044459107] [2020-10-13 09:26:35,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:26:35,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:26:35,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697682416] [2020-10-13 09:26:35,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:26:35,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:26:35,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:26:35,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:26:35,515 INFO L87 Difference]: Start difference. First operand 1889 states and 2683 transitions. Second operand 8 states. [2020-10-13 09:26:52,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:26:52,420 INFO L93 Difference]: Finished difference Result 3383 states and 4913 transitions. [2020-10-13 09:26:52,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:26:52,426 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 134 [2020-10-13 09:26:52,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:26:52,435 INFO L225 Difference]: With dead ends: 3383 [2020-10-13 09:26:52,435 INFO L226 Difference]: Without dead ends: 1432 [2020-10-13 09:26:52,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:26:52,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-13 09:26:52,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1430. [2020-10-13 09:26:52,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1430 states. [2020-10-13 09:26:52,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 2036 transitions. [2020-10-13 09:26:52,480 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 2036 transitions. Word has length 134 [2020-10-13 09:26:52,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:26:52,481 INFO L479 AbstractCegarLoop]: Abstraction has 1430 states and 2036 transitions. [2020-10-13 09:26:52,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:26:52,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 2036 transitions. [2020-10-13 09:26:52,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-13 09:26:52,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:26:52,492 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:26:52,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:26:52,493 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:26:52,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:26:52,493 INFO L82 PathProgramCache]: Analyzing trace with hash -812795652, now seen corresponding path program 1 times [2020-10-13 09:26:52,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:26:52,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988762118] [2020-10-13 09:26:52,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:26:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:52,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:52,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:52,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-13 09:26:52,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:52,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-13 09:26:52,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:52,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:26:52,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-13 09:26:52,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 09:26:52,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:52,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:26:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:52,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:52,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:52,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:26:52,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:52,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:26:52,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:52,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:52,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:52,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:52,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:52,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:26:52,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:52,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:52,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:53,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:26:53,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:53,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 09:26:53,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:53,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:26:53,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:53,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 09:26:53,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:53,063 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:26:53,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988762118] [2020-10-13 09:26:53,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:26:53,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:26:53,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947065120] [2020-10-13 09:26:53,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:26:53,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:26:53,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:26:53,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:26:53,066 INFO L87 Difference]: Start difference. First operand 1430 states and 2036 transitions. Second operand 5 states. [2020-10-13 09:27:03,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:27:03,955 INFO L93 Difference]: Finished difference Result 3316 states and 5090 transitions. [2020-10-13 09:27:03,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:27:03,957 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-13 09:27:03,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:27:03,970 INFO L225 Difference]: With dead ends: 3316 [2020-10-13 09:27:03,970 INFO L226 Difference]: Without dead ends: 2325 [2020-10-13 09:27:03,974 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 09:27:03,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2325 states. [2020-10-13 09:27:04,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2325 to 2323. [2020-10-13 09:27:04,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2323 states. [2020-10-13 09:27:04,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 3245 transitions. [2020-10-13 09:27:04,035 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 3245 transitions. Word has length 147 [2020-10-13 09:27:04,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:27:04,036 INFO L479 AbstractCegarLoop]: Abstraction has 2323 states and 3245 transitions. [2020-10-13 09:27:04,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:27:04,036 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 3245 transitions. [2020-10-13 09:27:04,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-13 09:27:04,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:27:04,040 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:27:04,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:27:04,040 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:27:04,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:27:04,041 INFO L82 PathProgramCache]: Analyzing trace with hash 52415849, now seen corresponding path program 1 times [2020-10-13 09:27:04,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:27:04,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533883304] [2020-10-13 09:27:04,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:27:04,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:04,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:04,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:05,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:07,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:07,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-13 09:27:07,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:27:07,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3701 [2020-10-13 09:27:07,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:07,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:27:07,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-13 09:27:07,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:27:07,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:07,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:27:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:07,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:07,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:07,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:27:07,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:07,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:27:07,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:07,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:27:07,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:27:07,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:27:07,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:07,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:27:07,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:07,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:08,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:08,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:27:08,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:08,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 09:27:08,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:08,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:27:08,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:27:08,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:27:08,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:08,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:27:08,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:08,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:08,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:08,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 09:27:08,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:08,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 09:27:08,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:08,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:27:08,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:27:08,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:27:08,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:08,300 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 107 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-13 09:27:08,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533883304] [2020-10-13 09:27:08,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:27:08,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:27:08,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170301374] [2020-10-13 09:27:08,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:27:08,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:27:08,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:27:08,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:27:08,303 INFO L87 Difference]: Start difference. First operand 2323 states and 3245 transitions. Second operand 5 states. [2020-10-13 09:27:22,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:27:22,231 INFO L93 Difference]: Finished difference Result 4225 states and 6064 transitions. [2020-10-13 09:27:22,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:27:22,234 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 222 [2020-10-13 09:27:22,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:27:22,245 INFO L225 Difference]: With dead ends: 4225 [2020-10-13 09:27:22,246 INFO L226 Difference]: Without dead ends: 2325 [2020-10-13 09:27:22,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:27:22,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2325 states. [2020-10-13 09:27:22,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2325 to 2323. [2020-10-13 09:27:22,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2323 states. [2020-10-13 09:27:22,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 3241 transitions. [2020-10-13 09:27:22,313 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 3241 transitions. Word has length 222 [2020-10-13 09:27:22,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:27:22,315 INFO L479 AbstractCegarLoop]: Abstraction has 2323 states and 3241 transitions. [2020-10-13 09:27:22,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:27:22,315 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 3241 transitions. [2020-10-13 09:27:22,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-13 09:27:22,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:27:22,320 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, 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] [2020-10-13 09:27:22,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:27:22,320 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:27:22,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:27:22,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1924556241, now seen corresponding path program 1 times [2020-10-13 09:27:22,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:27:22,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231392479] [2020-10-13 09:27:22,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:27:22,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:22,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:22,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:22,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-13 09:27:22,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:22,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 471 [2020-10-13 09:27:22,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:22,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:27:22,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-13 09:27:22,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 09:27:22,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:22,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:27:22,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:22,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:22,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:22,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:27:22,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:22,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:27:22,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:22,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:27:22,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:27:22,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:27:22,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:22,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:27:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:22,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:23,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:23,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:27:23,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:23,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 09:27:23,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:23,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:27:23,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:27:23,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 09:27:23,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:23,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:27:23,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:23,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:23,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:23,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:27:23,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:23,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-13 09:27:23,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:23,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:27:23,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:27:23,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 09:27:23,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:23,354 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:27:23,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231392479] [2020-10-13 09:27:23,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:27:23,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:27:23,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075953269] [2020-10-13 09:27:23,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:27:23,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:27:23,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:27:23,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:27:23,358 INFO L87 Difference]: Start difference. First operand 2323 states and 3241 transitions. Second operand 7 states. [2020-10-13 09:27:38,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:27:38,948 INFO L93 Difference]: Finished difference Result 6092 states and 8954 transitions. [2020-10-13 09:27:38,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:27:38,952 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 223 [2020-10-13 09:27:38,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:27:38,970 INFO L225 Difference]: With dead ends: 6092 [2020-10-13 09:27:38,970 INFO L226 Difference]: Without dead ends: 4208 [2020-10-13 09:27:38,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:27:38,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4208 states. [2020-10-13 09:27:39,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4208 to 4186. [2020-10-13 09:27:39,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4186 states. [2020-10-13 09:27:39,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4186 states to 4186 states and 5557 transitions. [2020-10-13 09:27:39,077 INFO L78 Accepts]: Start accepts. Automaton has 4186 states and 5557 transitions. Word has length 223 [2020-10-13 09:27:39,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:27:39,077 INFO L479 AbstractCegarLoop]: Abstraction has 4186 states and 5557 transitions. [2020-10-13 09:27:39,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:27:39,078 INFO L276 IsEmpty]: Start isEmpty. Operand 4186 states and 5557 transitions. [2020-10-13 09:27:39,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-13 09:27:39,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:27:39,083 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:27:39,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:27:39,083 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:27:39,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:27:39,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1905746709, now seen corresponding path program 1 times [2020-10-13 09:27:39,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:27:39,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589470649] [2020-10-13 09:27:39,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:27:39,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:39,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:39,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:39,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-13 09:27:39,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:39,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 833 [2020-10-13 09:27:39,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:39,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 09:27:39,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:27:39,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-13 09:27:39,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:40,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:27:40,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:40,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:40,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:40,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:27:40,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:40,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:27:40,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:40,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:27:40,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:27:40,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:27:40,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:40,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:27:40,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:40,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:40,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:40,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:27:40,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:40,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-13 09:27:40,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:40,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 09:27:40,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:27:40,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-13 09:27:40,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:40,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:27:40,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:40,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:40,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:40,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-13 09:27:40,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:40,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-13 09:27:40,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:40,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:27:40,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:27:40,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-13 09:27:40,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:40,897 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 187 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:27:40,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589470649] [2020-10-13 09:27:40,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:27:40,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 09:27:40,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239549831] [2020-10-13 09:27:40,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 09:27:40,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:27:40,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 09:27:40,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:27:40,900 INFO L87 Difference]: Start difference. First operand 4186 states and 5557 transitions. Second operand 10 states. [2020-10-13 09:28:01,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:28:01,321 INFO L93 Difference]: Finished difference Result 11907 states and 16452 transitions. [2020-10-13 09:28:01,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 09:28:01,324 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 245 [2020-10-13 09:28:01,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:28:01,359 INFO L225 Difference]: With dead ends: 11907 [2020-10-13 09:28:01,360 INFO L226 Difference]: Without dead ends: 8160 [2020-10-13 09:28:01,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2020-10-13 09:28:01,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8160 states. [2020-10-13 09:28:01,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8160 to 7587. [2020-10-13 09:28:01,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7587 states. [2020-10-13 09:28:01,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7587 states to 7587 states and 9581 transitions. [2020-10-13 09:28:01,584 INFO L78 Accepts]: Start accepts. Automaton has 7587 states and 9581 transitions. Word has length 245 [2020-10-13 09:28:01,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:28:01,585 INFO L479 AbstractCegarLoop]: Abstraction has 7587 states and 9581 transitions. [2020-10-13 09:28:01,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 09:28:01,585 INFO L276 IsEmpty]: Start isEmpty. Operand 7587 states and 9581 transitions. [2020-10-13 09:28:01,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-10-13 09:28:01,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:28:01,592 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:28:01,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:28:01,592 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:28:01,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:28:01,592 INFO L82 PathProgramCache]: Analyzing trace with hash 263435913, now seen corresponding path program 1 times [2020-10-13 09:28:01,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:28:01,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340606736] [2020-10-13 09:28:01,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:28:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:01,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:01,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:02,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:04,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:06,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:06,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-13 09:28:06,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:28:06,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4865 [2020-10-13 09:28:06,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:06,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:28:06,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 125 [2020-10-13 09:28:06,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-13 09:28:06,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:28:06,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:28:06,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:06,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:06,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:06,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:28:06,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:28:06,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:28:06,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:06,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:28:06,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:28:06,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:28:06,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:28:06,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:28:06,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:06,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:06,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:06,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:28:06,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:28:06,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-13 09:28:06,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:06,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:28:06,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:28:06,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 09:28:06,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:28:06,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 09:28:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:06,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:07,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:07,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 09:28:07,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:28:07,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-13 09:28:07,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:07,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:28:07,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:28:07,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-13 09:28:07,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:28:07,218 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 206 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:28:07,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340606736] [2020-10-13 09:28:07,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:28:07,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:28:07,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654221878] [2020-10-13 09:28:07,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:28:07,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:28:07,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:28:07,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:28:07,221 INFO L87 Difference]: Start difference. First operand 7587 states and 9581 transitions. Second operand 7 states. [2020-10-13 09:28:30,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:28:30,755 INFO L93 Difference]: Finished difference Result 18216 states and 23976 transitions. [2020-10-13 09:28:30,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:28:30,763 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 278 [2020-10-13 09:28:30,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:28:30,813 INFO L225 Difference]: With dead ends: 18216 [2020-10-13 09:28:30,813 INFO L226 Difference]: Without dead ends: 11071 [2020-10-13 09:28:30,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:28:30,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11071 states. [2020-10-13 09:28:31,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11071 to 10911. [2020-10-13 09:28:31,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10911 states. [2020-10-13 09:28:31,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10911 states to 10911 states and 13811 transitions. [2020-10-13 09:28:31,113 INFO L78 Accepts]: Start accepts. Automaton has 10911 states and 13811 transitions. Word has length 278 [2020-10-13 09:28:31,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:28:31,113 INFO L479 AbstractCegarLoop]: Abstraction has 10911 states and 13811 transitions. [2020-10-13 09:28:31,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:28:31,114 INFO L276 IsEmpty]: Start isEmpty. Operand 10911 states and 13811 transitions. [2020-10-13 09:28:31,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-13 09:28:31,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:28:31,123 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:28:31,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:28:31,124 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:28:31,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:28:31,124 INFO L82 PathProgramCache]: Analyzing trace with hash -2109258745, now seen corresponding path program 1 times [2020-10-13 09:28:31,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:28:31,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166381537] [2020-10-13 09:28:31,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:28:31,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:31,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:31,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:33,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:33,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-13 09:28:33,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:28:33,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1925 [2020-10-13 09:28:33,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:33,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:28:33,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-13 09:28:33,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 09:28:33,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:28:33,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:28:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:33,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:33,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:33,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:28:33,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:28:33,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:28:33,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:33,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:28:33,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:28:33,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:28:33,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:28:33,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:28:33,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:33,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:33,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:33,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:28:33,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:28:33,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:28:33,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:33,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:28:33,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:28:33,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:28:33,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:28:33,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:28:33,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:33,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:33,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:33,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 09:28:33,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:28:33,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 09:28:33,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:33,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:28:33,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:28:33,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 09:28:33,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:28:33,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-13 09:28:33,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:33,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:33,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:33,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:28:33,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:28:33,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-13 09:28:33,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:33,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:28:33,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:28:33,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 09:28:33,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:28:33,824 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-13 09:28:33,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166381537] [2020-10-13 09:28:33,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:28:33,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:28:33,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795628599] [2020-10-13 09:28:33,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:28:33,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:28:33,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:28:33,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:28:33,834 INFO L87 Difference]: Start difference. First operand 10911 states and 13811 transitions. Second operand 7 states. [2020-10-13 09:28:58,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:28:58,971 INFO L93 Difference]: Finished difference Result 28700 states and 38576 transitions. [2020-10-13 09:28:58,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:28:58,974 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 309 [2020-10-13 09:28:58,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:28:59,041 INFO L225 Difference]: With dead ends: 28700 [2020-10-13 09:28:59,041 INFO L226 Difference]: Without dead ends: 18237 [2020-10-13 09:28:59,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:28:59,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18237 states. [2020-10-13 09:28:59,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18237 to 15894. [2020-10-13 09:28:59,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15894 states. [2020-10-13 09:28:59,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15894 states to 15894 states and 19770 transitions. [2020-10-13 09:28:59,527 INFO L78 Accepts]: Start accepts. Automaton has 15894 states and 19770 transitions. Word has length 309 [2020-10-13 09:28:59,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:28:59,528 INFO L479 AbstractCegarLoop]: Abstraction has 15894 states and 19770 transitions. [2020-10-13 09:28:59,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:28:59,528 INFO L276 IsEmpty]: Start isEmpty. Operand 15894 states and 19770 transitions. [2020-10-13 09:28:59,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-13 09:28:59,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:28:59,538 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:28:59,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:28:59,538 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:28:59,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:28:59,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1340619167, now seen corresponding path program 1 times [2020-10-13 09:28:59,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:28:59,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089905274] [2020-10-13 09:28:59,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:28:59,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:59,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:00,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:01,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:02,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:02,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-13 09:29:02,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:29:02,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2793 [2020-10-13 09:29:02,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:02,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:29:02,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 278 [2020-10-13 09:29:02,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 09:29:02,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:29:02,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:29:02,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:02,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:02,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:02,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:29:02,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:02,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:29:02,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:02,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:29:02,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:29:02,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:29:02,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:29:02,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:29:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:02,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:02,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:02,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:29:02,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:02,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 09:29:02,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:02,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:29:02,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:29:02,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:29:02,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:29:02,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:29:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:02,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:02,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:02,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 09:29:02,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:02,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-13 09:29:02,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:02,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:29:02,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:29:02,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-13 09:29:02,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:29:03,020 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 107 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 09:29:03,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089905274] [2020-10-13 09:29:03,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:29:03,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:29:03,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448643516] [2020-10-13 09:29:03,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:29:03,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:29:03,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:29:03,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:29:03,023 INFO L87 Difference]: Start difference. First operand 15894 states and 19770 transitions. Second operand 5 states. [2020-10-13 09:29:18,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:29:18,197 INFO L93 Difference]: Finished difference Result 31473 states and 39311 transitions. [2020-10-13 09:29:18,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:29:18,200 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 326 [2020-10-13 09:29:18,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:29:18,249 INFO L225 Difference]: With dead ends: 31473 [2020-10-13 09:29:18,250 INFO L226 Difference]: Without dead ends: 15886 [2020-10-13 09:29:18,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:29:18,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15886 states. [2020-10-13 09:29:18,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15886 to 15873. [2020-10-13 09:29:18,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15873 states. [2020-10-13 09:29:18,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15873 states to 15873 states and 19578 transitions. [2020-10-13 09:29:18,614 INFO L78 Accepts]: Start accepts. Automaton has 15873 states and 19578 transitions. Word has length 326 [2020-10-13 09:29:18,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:29:18,615 INFO L479 AbstractCegarLoop]: Abstraction has 15873 states and 19578 transitions. [2020-10-13 09:29:18,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:29:18,615 INFO L276 IsEmpty]: Start isEmpty. Operand 15873 states and 19578 transitions. [2020-10-13 09:29:18,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-13 09:29:18,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:29:18,624 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:29:18,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:29:18,625 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:29:18,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:29:18,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1665033365, now seen corresponding path program 1 times [2020-10-13 09:29:18,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:29:18,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864731971] [2020-10-13 09:29:18,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:29:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:18,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:19,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:19,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:20,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:20,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-13 09:29:20,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:29:20,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1998 [2020-10-13 09:29:20,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:20,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:29:20,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 275 [2020-10-13 09:29:20,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 09:29:20,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:29:20,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:29:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:20,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:20,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:20,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:29:20,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:20,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:29:20,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:20,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:29:20,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:29:20,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:29:20,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:29:20,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:29:20,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:20,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:21,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:21,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-13 09:29:21,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:21,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-13 09:29:21,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:21,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:29:21,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:29:21,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 260 [2020-10-13 09:29:21,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:29:21,233 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:29:21,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864731971] [2020-10-13 09:29:21,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:29:21,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:29:21,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026426918] [2020-10-13 09:29:21,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:29:21,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:29:21,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:29:21,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:29:21,236 INFO L87 Difference]: Start difference. First operand 15873 states and 19578 transitions. Second operand 5 states. [2020-10-13 09:29:37,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:29:37,717 INFO L93 Difference]: Finished difference Result 31527 states and 39117 transitions. [2020-10-13 09:29:37,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:29:37,720 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 325 [2020-10-13 09:29:37,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:29:37,763 INFO L225 Difference]: With dead ends: 31527 [2020-10-13 09:29:37,763 INFO L226 Difference]: Without dead ends: 15863 [2020-10-13 09:29:37,799 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 09:29:37,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15863 states. [2020-10-13 09:29:38,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15863 to 15840. [2020-10-13 09:29:38,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15840 states. [2020-10-13 09:29:38,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15840 states to 15840 states and 19336 transitions. [2020-10-13 09:29:38,069 INFO L78 Accepts]: Start accepts. Automaton has 15840 states and 19336 transitions. Word has length 325 [2020-10-13 09:29:38,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:29:38,070 INFO L479 AbstractCegarLoop]: Abstraction has 15840 states and 19336 transitions. [2020-10-13 09:29:38,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:29:38,070 INFO L276 IsEmpty]: Start isEmpty. Operand 15840 states and 19336 transitions. [2020-10-13 09:29:38,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-13 09:29:38,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:29:38,081 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:29:38,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:29:38,082 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:29:38,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:29:38,082 INFO L82 PathProgramCache]: Analyzing trace with hash -307569999, now seen corresponding path program 1 times [2020-10-13 09:29:38,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:29:38,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2125252025] [2020-10-13 09:29:38,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:29:38,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:38,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:38,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:40,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:40,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 346 [2020-10-13 09:29:40,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:29:40,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2048 [2020-10-13 09:29:40,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:40,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:29:40,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 208 [2020-10-13 09:29:40,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 09:29:40,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:29:40,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:29:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:40,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:40,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:40,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:29:40,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:40,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:29:40,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:40,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:29:40,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:29:40,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:29:40,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:29:40,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:29:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:40,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:40,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:40,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:29:40,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:40,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 09:29:40,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:40,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:29:40,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:29:40,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:29:40,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:29:40,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:29:40,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:40,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:40,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:40,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 09:29:40,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:40,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 09:29:40,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:40,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:29:40,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:29:40,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-13 09:29:40,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:29:40,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-13 09:29:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:40,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:40,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:40,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:29:40,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:40,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 09:29:40,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:40,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:29:40,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:29:40,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 09:29:40,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:29:40,810 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-13 09:29:40,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2125252025] [2020-10-13 09:29:40,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:29:40,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:29:40,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149947243] [2020-10-13 09:29:40,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:29:40,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:29:40,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:29:40,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:29:40,813 INFO L87 Difference]: Start difference. First operand 15840 states and 19336 transitions. Second operand 7 states.