/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/Problem13_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:33:35,415 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:33:35,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:33:35,441 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:33:35,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:33:35,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:33:35,444 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:33:35,446 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:33:35,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:33:35,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:33:35,450 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:33:35,451 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:33:35,451 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:33:35,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:33:35,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:33:35,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:33:35,456 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:33:35,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:33:35,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:33:35,461 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:33:35,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:33:35,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:33:35,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:33:35,466 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:33:35,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:33:35,469 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:33:35,469 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:33:35,470 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:33:35,471 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:33:35,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:33:35,472 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:33:35,473 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:33:35,474 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:33:35,474 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:33:35,476 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:33:35,476 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:33:35,476 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:33:35,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:33:35,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:33:35,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:33:35,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:33:35,481 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 08:33:35,504 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:33:35,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:33:35,506 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:33:35,506 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:33:35,506 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:33:35,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:33:35,507 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:33:35,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:33:35,507 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:33:35,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:33:35,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:33:35,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:33:35,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:33:35,508 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:33:35,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:33:35,508 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:33:35,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:33:35,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:33:35,509 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:33:35,509 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:33:35,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:33:35,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:33:35,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:33:35,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:33:35,510 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:33:35,511 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:33:35,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:33:35,511 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:33:35,511 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:33:35,511 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 08:33:35,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:33:35,827 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:33:35,831 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:33:35,832 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:33:35,833 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:33:35,833 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label19.c [2020-10-13 08:33:35,915 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af0f07c9c/3d99f6d43fc34e7da946129cc1d85e5f/FLAGc5bfee8c8 [2020-10-13 08:33:36,739 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:33:36,740 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label19.c [2020-10-13 08:33:36,771 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af0f07c9c/3d99f6d43fc34e7da946129cc1d85e5f/FLAGc5bfee8c8 [2020-10-13 08:33:37,210 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af0f07c9c/3d99f6d43fc34e7da946129cc1d85e5f [2020-10-13 08:33:37,222 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:33:37,224 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:33:37,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:33:37,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:33:37,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:33:37,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:33:37" (1/1) ... [2020-10-13 08:33:37,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@718a428c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:33:37, skipping insertion in model container [2020-10-13 08:33:37,237 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:33:37" (1/1) ... [2020-10-13 08:33:37,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:33:37,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:33:39,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:33:39,274 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:33:40,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:33:40,112 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:33:40,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:33:40 WrapperNode [2020-10-13 08:33:40,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:33:40,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:33:40,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:33:40,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:33:40,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:33:40" (1/1) ... [2020-10-13 08:33:40,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:33:40" (1/1) ... [2020-10-13 08:33:40,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:33:40" (1/1) ... [2020-10-13 08:33:40,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:33:40" (1/1) ... [2020-10-13 08:33:40,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:33:40" (1/1) ... [2020-10-13 08:33:40,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:33:40" (1/1) ... [2020-10-13 08:33:40,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:33:40" (1/1) ... [2020-10-13 08:33:40,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:33:40,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:33:40,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:33:40,503 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:33:40,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:33:40" (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 08:33:40,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:33:40,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:33:40,565 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:33:40,565 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:33:40,565 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:33:40,566 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:33:40,566 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:33:40,566 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:33:40,566 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:33:40,566 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:33:40,567 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:33:40,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:33:40,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:33:40,567 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:33:40,567 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:33:40,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:33:40,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:33:52,546 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:33:52,547 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:33:52,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:33:52 BoogieIcfgContainer [2020-10-13 08:33:52,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:33:52,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:33:52,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:33:52,567 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:33:52,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:33:37" (1/3) ... [2020-10-13 08:33:52,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@348a31c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:33:52, skipping insertion in model container [2020-10-13 08:33:52,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:33:40" (2/3) ... [2020-10-13 08:33:52,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@348a31c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:33:52, skipping insertion in model container [2020-10-13 08:33:52,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:33:52" (3/3) ... [2020-10-13 08:33:52,572 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label19.c [2020-10-13 08:33:52,586 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:33:52,597 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:33:52,616 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:33:52,651 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:33:52,651 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:33:52,651 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:33:52,651 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:33:52,651 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:33:52,652 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:33:52,652 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:33:52,652 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:33:52,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-13 08:33:52,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-13 08:33:52,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:33:52,701 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] [2020-10-13 08:33:52,702 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:33:52,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:33:52,710 INFO L82 PathProgramCache]: Analyzing trace with hash -887553576, now seen corresponding path program 1 times [2020-10-13 08:33:52,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:33:52,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615469974] [2020-10-13 08:33:52,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:33:52,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:53,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:53,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:53,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 08:33:53,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:53,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 464 [2020-10-13 08:33:53,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:53,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:33:53,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:33:53,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 08:33:53,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:33:53,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:33:53,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:53,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:53,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:53,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:33:53,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:53,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 08:33:53,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:53,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:33:53,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:33:53,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:33:53,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:53,538 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 08:33:53,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615469974] [2020-10-13 08:33:53,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:33:53,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:33:53,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068338138] [2020-10-13 08:33:53,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:33:53,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:33:53,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:33:53,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:33:53,578 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-13 08:34:09,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:34:09,514 INFO L93 Difference]: Finished difference Result 3152 states and 5831 transitions. [2020-10-13 08:34:09,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:34:09,518 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-13 08:34:09,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:34:09,553 INFO L225 Difference]: With dead ends: 3152 [2020-10-13 08:34:09,553 INFO L226 Difference]: Without dead ends: 1954 [2020-10-13 08:34:09,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:34:09,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2020-10-13 08:34:09,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1885. [2020-10-13 08:34:09,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1885 states. [2020-10-13 08:34:09,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 3103 transitions. [2020-10-13 08:34:09,740 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 3103 transitions. Word has length 23 [2020-10-13 08:34:09,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:34:09,740 INFO L479 AbstractCegarLoop]: Abstraction has 1885 states and 3103 transitions. [2020-10-13 08:34:09,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:34:09,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 3103 transitions. [2020-10-13 08:34:09,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-13 08:34:09,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:34:09,746 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:34:09,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:34:09,747 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:34:09,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:34:09,747 INFO L82 PathProgramCache]: Analyzing trace with hash -2128100160, now seen corresponding path program 1 times [2020-10-13 08:34:09,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:34:09,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482789211] [2020-10-13 08:34:09,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:34:09,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:09,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:10,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:10,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:10,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:34:10,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:34:10,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 962 [2020-10-13 08:34:10,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:10,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:34:10,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 08:34:10,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 08:34:10,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:34:10,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:34:10,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:10,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:10,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:10,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:34:10,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:34:10,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 08:34:10,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:10,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:34:10,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:34:10,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:34:10,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:34:10,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:34:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:10,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:11,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:11,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 08:34:11,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:34:11,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 08:34:11,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:11,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:34:11,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:34:11,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 08:34:11,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-13 08:34:11,143 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:34:11,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482789211] [2020-10-13 08:34:11,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:34:11,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:34:11,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899619572] [2020-10-13 08:34:11,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:34:11,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:34:11,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:34:11,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:34:11,149 INFO L87 Difference]: Start difference. First operand 1885 states and 3103 transitions. Second operand 6 states. [2020-10-13 08:34:34,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:34:34,766 INFO L93 Difference]: Finished difference Result 7113 states and 11891 transitions. [2020-10-13 08:34:34,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:34:34,769 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2020-10-13 08:34:34,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:34:34,809 INFO L225 Difference]: With dead ends: 7113 [2020-10-13 08:34:34,809 INFO L226 Difference]: Without dead ends: 5234 [2020-10-13 08:34:34,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:34:34,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5234 states. [2020-10-13 08:34:35,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5234 to 5194. [2020-10-13 08:34:35,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5194 states. [2020-10-13 08:34:35,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5194 states to 5194 states and 8128 transitions. [2020-10-13 08:34:35,024 INFO L78 Accepts]: Start accepts. Automaton has 5194 states and 8128 transitions. Word has length 93 [2020-10-13 08:34:35,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:34:35,027 INFO L479 AbstractCegarLoop]: Abstraction has 5194 states and 8128 transitions. [2020-10-13 08:34:35,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:34:35,028 INFO L276 IsEmpty]: Start isEmpty. Operand 5194 states and 8128 transitions. [2020-10-13 08:34:35,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 08:34:35,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:34:35,041 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:34:35,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:34:35,041 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:34:35,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:34:35,042 INFO L82 PathProgramCache]: Analyzing trace with hash 485478617, now seen corresponding path program 1 times [2020-10-13 08:34:35,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:34:35,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587621290] [2020-10-13 08:34:35,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:34:35,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:35,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:35,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:36,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:36,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 08:34:36,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:34:36,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1103 [2020-10-13 08:34:36,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:36,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:34:36,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-13 08:34:36,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 08:34:36,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:34:36,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:34:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:36,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:36,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:36,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:34:36,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:34:36,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:34:36,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:36,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:34:36,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:34:36,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:34:36,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:34:36,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:34:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:36,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:36,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:36,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 08:34:36,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:34:36,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 08:34:36,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:36,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:34:36,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:34:36,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 08:34:36,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:34:36,498 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:34:36,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587621290] [2020-10-13 08:34:36,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:34:36,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:34:36,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031225872] [2020-10-13 08:34:36,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:34:36,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:34:36,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:34:36,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:34:36,503 INFO L87 Difference]: Start difference. First operand 5194 states and 8128 transitions. Second operand 5 states. [2020-10-13 08:34:54,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:34:54,711 INFO L93 Difference]: Finished difference Result 15266 states and 24275 transitions. [2020-10-13 08:34:54,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:34:54,713 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-13 08:34:54,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:34:54,779 INFO L225 Difference]: With dead ends: 15266 [2020-10-13 08:34:54,779 INFO L226 Difference]: Without dead ends: 10078 [2020-10-13 08:34:54,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:34:54,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10078 states. [2020-10-13 08:34:55,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10078 to 10073. [2020-10-13 08:34:55,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10073 states. [2020-10-13 08:34:55,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10073 states to 10073 states and 14746 transitions. [2020-10-13 08:34:55,135 INFO L78 Accepts]: Start accepts. Automaton has 10073 states and 14746 transitions. Word has length 96 [2020-10-13 08:34:55,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:34:55,136 INFO L479 AbstractCegarLoop]: Abstraction has 10073 states and 14746 transitions. [2020-10-13 08:34:55,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:34:55,136 INFO L276 IsEmpty]: Start isEmpty. Operand 10073 states and 14746 transitions. [2020-10-13 08:34:55,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 08:34:55,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:34:55,141 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:34:55,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:34:55,142 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:34:55,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:34:55,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1606428891, now seen corresponding path program 1 times [2020-10-13 08:34:55,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:34:55,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77757568] [2020-10-13 08:34:55,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:34:55,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:55,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:55,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:56,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:56,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 08:34:56,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:34:56,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1171 [2020-10-13 08:34:56,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:56,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:34:56,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 08:34:56,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 08:34:56,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:34:56,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:34:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:56,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:56,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:56,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:34:56,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:34:56,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:34:56,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:56,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:34:56,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:34:56,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:34:56,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:34:56,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:34:56,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:56,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:56,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:56,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 08:34:56,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:34:56,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-13 08:34:56,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:56,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:34:56,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:34:56,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 08:34:56,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:34:56,743 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:34:56,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77757568] [2020-10-13 08:34:56,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:34:56,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:34:56,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333477658] [2020-10-13 08:34:56,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:34:56,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:34:56,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:34:56,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:34:56,751 INFO L87 Difference]: Start difference. First operand 10073 states and 14746 transitions. Second operand 5 states. [2020-10-13 08:35:23,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:35:23,995 INFO L93 Difference]: Finished difference Result 19406 states and 30110 transitions. [2020-10-13 08:35:23,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:35:23,998 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-13 08:35:23,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:35:24,078 INFO L225 Difference]: With dead ends: 19406 [2020-10-13 08:35:24,078 INFO L226 Difference]: Without dead ends: 14207 [2020-10-13 08:35:24,104 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 08:35:24,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14207 states. [2020-10-13 08:35:24,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14207 to 14145. [2020-10-13 08:35:24,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14145 states. [2020-10-13 08:35:24,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14145 states to 14145 states and 20389 transitions. [2020-10-13 08:35:24,549 INFO L78 Accepts]: Start accepts. Automaton has 14145 states and 20389 transitions. Word has length 102 [2020-10-13 08:35:24,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:35:24,551 INFO L479 AbstractCegarLoop]: Abstraction has 14145 states and 20389 transitions. [2020-10-13 08:35:24,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:35:24,551 INFO L276 IsEmpty]: Start isEmpty. Operand 14145 states and 20389 transitions. [2020-10-13 08:35:24,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 08:35:24,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:35:24,564 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:35:24,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:35:24,565 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:35:24,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:35:24,565 INFO L82 PathProgramCache]: Analyzing trace with hash 913781585, now seen corresponding path program 1 times [2020-10-13 08:35:24,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:35:24,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155004639] [2020-10-13 08:35:24,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:35:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:24,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:24,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:25,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:25,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 08:35:25,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:35:25,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 921 [2020-10-13 08:35:25,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:25,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:35:25,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-13 08:35:25,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 08:35:25,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:35:25,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:35:25,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:25,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:25,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:25,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:35:25,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:35:25,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 08:35:25,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:25,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:35:25,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:35:25,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:35:25,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:35:25,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:35:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:25,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:25,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:25,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 08:35:25,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:35:25,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-13 08:35:25,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:25,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:35:25,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:35:25,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 08:35:25,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:35:26,079 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:35:26,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155004639] [2020-10-13 08:35:26,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:35:26,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:35:26,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417204263] [2020-10-13 08:35:26,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:35:26,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:35:26,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:35:26,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:35:26,084 INFO L87 Difference]: Start difference. First operand 14145 states and 20389 transitions. Second operand 5 states. [2020-10-13 08:35:50,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:35:50,938 INFO L93 Difference]: Finished difference Result 38021 states and 56336 transitions. [2020-10-13 08:35:50,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:35:50,943 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-13 08:35:50,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:35:51,049 INFO L225 Difference]: With dead ends: 38021 [2020-10-13 08:35:51,050 INFO L226 Difference]: Without dead ends: 24687 [2020-10-13 08:35:51,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:35:51,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24687 states. [2020-10-13 08:35:51,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24687 to 24675. [2020-10-13 08:35:51,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24675 states. [2020-10-13 08:35:52,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24675 states to 24675 states and 34168 transitions. [2020-10-13 08:35:52,821 INFO L78 Accepts]: Start accepts. Automaton has 24675 states and 34168 transitions. Word has length 124 [2020-10-13 08:35:52,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:35:52,821 INFO L479 AbstractCegarLoop]: Abstraction has 24675 states and 34168 transitions. [2020-10-13 08:35:52,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:35:52,822 INFO L276 IsEmpty]: Start isEmpty. Operand 24675 states and 34168 transitions. [2020-10-13 08:35:52,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-13 08:35:52,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:35:52,825 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:35:52,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:35:52,826 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:35:52,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:35:52,827 INFO L82 PathProgramCache]: Analyzing trace with hash -821580864, now seen corresponding path program 1 times [2020-10-13 08:35:52,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:35:52,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810299888] [2020-10-13 08:35:52,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:35:52,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:52,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:53,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:54,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:54,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 08:35:54,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:35:54,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1168 [2020-10-13 08:35:54,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:54,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:35:54,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-13 08:35:54,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 08:35:54,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:35:54,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:35:54,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:54,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:54,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:54,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:35:54,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:35:54,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:35:54,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:54,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:35:54,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:35:54,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:35:54,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:35:54,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:35:54,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:54,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:54,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:54,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 08:35:54,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:35:54,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-13 08:35:54,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:54,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:35:54,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:35:54,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-13 08:35:54,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:35:54,447 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:35:54,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810299888] [2020-10-13 08:35:54,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:35:54,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:35:54,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197325129] [2020-10-13 08:35:54,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:35:54,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:35:54,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:35:54,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:35:54,452 INFO L87 Difference]: Start difference. First operand 24675 states and 34168 transitions. Second operand 5 states. [2020-10-13 08:36:22,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:36:22,386 INFO L93 Difference]: Finished difference Result 59923 states and 86048 transitions. [2020-10-13 08:36:22,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:36:22,391 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-10-13 08:36:22,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:36:22,603 INFO L225 Difference]: With dead ends: 59923 [2020-10-13 08:36:22,603 INFO L226 Difference]: Without dead ends: 36057 [2020-10-13 08:36:22,665 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 08:36:22,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36057 states. [2020-10-13 08:36:23,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36057 to 36052. [2020-10-13 08:36:23,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36052 states. [2020-10-13 08:36:23,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36052 states to 36052 states and 50583 transitions. [2020-10-13 08:36:23,674 INFO L78 Accepts]: Start accepts. Automaton has 36052 states and 50583 transitions. Word has length 144 [2020-10-13 08:36:23,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:36:23,675 INFO L479 AbstractCegarLoop]: Abstraction has 36052 states and 50583 transitions. [2020-10-13 08:36:23,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:36:23,675 INFO L276 IsEmpty]: Start isEmpty. Operand 36052 states and 50583 transitions. [2020-10-13 08:36:23,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-13 08:36:23,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:36:23,686 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 08:36:23,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:36:23,686 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:36:23,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:36:23,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1307312960, now seen corresponding path program 1 times [2020-10-13 08:36:23,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:36:23,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630481037] [2020-10-13 08:36:23,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:36:23,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:23,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:24,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:25,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:25,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-13 08:36:25,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:36:25,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1822 [2020-10-13 08:36:25,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:25,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:36:25,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-10-13 08:36:25,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 08:36:25,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:36:25,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:36:25,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:25,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:25,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:25,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:36:25,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:36:25,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:36:25,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:25,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:36:25,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:36:25,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:36:25,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:36:25,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:36:25,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:25,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:26,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:26,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-13 08:36:26,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:36:26,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-13 08:36:26,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:26,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:36:26,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:36:26,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-13 08:36:26,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:36:26,258 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:36:26,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630481037] [2020-10-13 08:36:26,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:36:26,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:36:26,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620911813] [2020-10-13 08:36:26,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:36:26,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:36:26,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:36:26,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:36:26,262 INFO L87 Difference]: Start difference. First operand 36052 states and 50583 transitions. Second operand 5 states. [2020-10-13 08:36:55,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:36:55,408 INFO L93 Difference]: Finished difference Result 84447 states and 125874 transitions. [2020-10-13 08:36:55,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:36:55,414 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 194 [2020-10-13 08:36:55,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:36:55,703 INFO L225 Difference]: With dead ends: 84447 [2020-10-13 08:36:55,703 INFO L226 Difference]: Without dead ends: 55675 [2020-10-13 08:36:55,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:36:55,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55675 states. [2020-10-13 08:36:57,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55675 to 55601. [2020-10-13 08:36:57,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55601 states. [2020-10-13 08:36:57,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55601 states to 55601 states and 82568 transitions. [2020-10-13 08:36:57,282 INFO L78 Accepts]: Start accepts. Automaton has 55601 states and 82568 transitions. Word has length 194 [2020-10-13 08:36:57,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:36:57,282 INFO L479 AbstractCegarLoop]: Abstraction has 55601 states and 82568 transitions. [2020-10-13 08:36:57,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:36:57,282 INFO L276 IsEmpty]: Start isEmpty. Operand 55601 states and 82568 transitions. [2020-10-13 08:36:57,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-13 08:36:57,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:36:57,292 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:36:57,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:36:57,293 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:36:57,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:36:57,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1672612277, now seen corresponding path program 1 times [2020-10-13 08:36:57,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:36:57,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670162665] [2020-10-13 08:36:57,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:36:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:57,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:57,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:57,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:01,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:01,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-13 08:37:01,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:37:01,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3677 [2020-10-13 08:37:01,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:01,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:37:01,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:37:01,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 08:37:01,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:37:01,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:37:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:01,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:01,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:01,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:37:01,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:37:01,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:37:01,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:01,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:37:01,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:37:01,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:37:01,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:37:01,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:37:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:01,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:01,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:01,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 08:37:01,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:37:01,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-13 08:37:01,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:01,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:37:01,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:37:01,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 08:37:01,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:37:01,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 08:37:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:01,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:01,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:01,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 08:37:01,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:37:01,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 08:37:01,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:01,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:37:01,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-13 08:37:01,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:37:01,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:37:01,744 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 08:37:01,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670162665] [2020-10-13 08:37:01,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:37:01,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:37:01,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209584935] [2020-10-13 08:37:01,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:37:01,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:37:01,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:37:01,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:37:01,748 INFO L87 Difference]: Start difference. First operand 55601 states and 82568 transitions. Second operand 8 states.