/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/Problem19_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:59:24,319 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:59:24,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:59:24,353 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:59:24,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:59:24,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:59:24,356 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:59:24,358 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:59:24,360 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:59:24,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:59:24,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:59:24,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:59:24,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:59:24,366 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:59:24,368 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:59:24,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:59:24,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:59:24,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:59:24,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:59:24,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:59:24,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:59:24,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:59:24,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:59:24,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:59:24,395 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:59:24,395 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:59:24,395 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:59:24,398 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:59:24,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:59:24,403 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:59:24,403 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:59:24,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:59:24,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:59:24,407 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:59:24,409 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:59:24,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:59:24,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:59:24,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:59:24,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:59:24,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:59:24,415 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:59:24,416 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 09:59:24,476 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:59:24,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:59:24,481 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:59:24,484 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:59:24,484 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:59:24,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:59:24,484 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:59:24,484 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:59:24,485 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:59:24,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:59:24,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:59:24,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:59:24,490 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:59:24,490 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:59:24,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:59:24,492 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:59:24,493 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:59:24,493 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:59:24,493 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:59:24,493 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:59:24,493 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:59:24,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:59:24,494 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:59:24,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:59:24,494 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:59:24,495 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:59:24,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:59:24,496 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:59:24,496 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:59:24,496 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 09:59:24,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:59:24,860 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:59:24,865 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:59:24,866 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:59:24,867 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:59:24,868 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label12.c [2020-10-13 09:59:24,957 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3edbbe11f/4d993a1987734b409a8ba015122cedb6/FLAG8f60c9f98 [2020-10-13 09:59:25,974 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:59:25,975 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label12.c [2020-10-13 09:59:26,023 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3edbbe11f/4d993a1987734b409a8ba015122cedb6/FLAG8f60c9f98 [2020-10-13 09:59:26,329 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3edbbe11f/4d993a1987734b409a8ba015122cedb6 [2020-10-13 09:59:26,338 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:59:26,340 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:59:26,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:59:26,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:59:26,347 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:59:26,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:59:26" (1/1) ... [2020-10-13 09:59:26,352 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26bc88a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:59:26, skipping insertion in model container [2020-10-13 09:59:26,352 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:59:26" (1/1) ... [2020-10-13 09:59:26,364 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:59:26,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:59:29,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:59:29,186 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:59:30,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:59:30,508 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:59:30,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:59:30 WrapperNode [2020-10-13 09:59:30,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:59:30,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:59:30,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:59:30,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:59:30,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:59:30" (1/1) ... [2020-10-13 09:59:30,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:59:30" (1/1) ... [2020-10-13 09:59:30,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:59:30" (1/1) ... [2020-10-13 09:59:30,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:59:30" (1/1) ... [2020-10-13 09:59:30,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:59:30" (1/1) ... [2020-10-13 09:59:30,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:59:30" (1/1) ... [2020-10-13 09:59:31,229 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:59:30" (1/1) ... [2020-10-13 09:59:31,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:59:31,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:59:31,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:59:31,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:59:31,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:59:30" (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 09:59:31,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:59:31,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:59:31,412 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:59:31,412 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:59:31,413 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 09:59:31,413 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 09:59:31,413 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-13 09:59:31,413 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-13 09:59:31,413 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:59:31,414 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:59:31,414 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:59:31,414 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 09:59:31,415 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 09:59:31,415 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-13 09:59:31,415 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-13 09:59:31,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:59:31,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:59:31,416 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:59:31,416 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:59:31,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:59:31,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:59:46,404 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:59:46,405 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:59:46,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:59:46 BoogieIcfgContainer [2020-10-13 09:59:46,426 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:59:46,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:59:46,428 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:59:46,434 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:59:46,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:59:26" (1/3) ... [2020-10-13 09:59:46,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f750245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:59:46, skipping insertion in model container [2020-10-13 09:59:46,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:59:30" (2/3) ... [2020-10-13 09:59:46,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f750245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:59:46, skipping insertion in model container [2020-10-13 09:59:46,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:59:46" (3/3) ... [2020-10-13 09:59:46,439 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label12.c [2020-10-13 09:59:46,454 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:59:46,468 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:59:46,487 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:59:46,531 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:59:46,532 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:59:46,532 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:59:46,532 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:59:46,533 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:59:46,533 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:59:46,533 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:59:46,533 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:59:46,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-13 09:59:46,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 09:59:46,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:59:46,608 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] [2020-10-13 09:59:46,609 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:59:46,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:59:46,618 INFO L82 PathProgramCache]: Analyzing trace with hash 299423154, now seen corresponding path program 1 times [2020-10-13 09:59:46,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:59:46,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818375045] [2020-10-13 09:59:46,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:59:46,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:59:46,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:59:47,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:59:47,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 09:59:47,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:59:47,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 509 [2020-10-13 09:59:47,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:59:47,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:59:47,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:59:47,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 09:59:47,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:59:47,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:59:47,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:59:47,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:59:47,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:59:47,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:59:47,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:59:47,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 09:59:47,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:59:47,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:59:47,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:59:47,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:59:47,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:59:47,696 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 09:59:47,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818375045] [2020-10-13 09:59:47,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:59:47,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 09:59:47,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980314469] [2020-10-13 09:59:47,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:59:47,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:59:47,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:59:47,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:59:47,727 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 5 states. [2020-10-13 10:00:26,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:00:26,884 INFO L93 Difference]: Finished difference Result 6587 states and 12523 transitions. [2020-10-13 10:00:26,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 10:00:26,890 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-10-13 10:00:26,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:00:26,955 INFO L225 Difference]: With dead ends: 6587 [2020-10-13 10:00:26,955 INFO L226 Difference]: Without dead ends: 4742 [2020-10-13 10:00:26,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:00:27,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4742 states. [2020-10-13 10:00:27,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4742 to 4621. [2020-10-13 10:00:27,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4621 states. [2020-10-13 10:00:27,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4621 states to 4621 states and 8147 transitions. [2020-10-13 10:00:27,333 INFO L78 Accepts]: Start accepts. Automaton has 4621 states and 8147 transitions. Word has length 50 [2020-10-13 10:00:27,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:00:27,334 INFO L479 AbstractCegarLoop]: Abstraction has 4621 states and 8147 transitions. [2020-10-13 10:00:27,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:00:27,335 INFO L276 IsEmpty]: Start isEmpty. Operand 4621 states and 8147 transitions. [2020-10-13 10:00:27,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 10:00:27,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:00:27,343 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:00:27,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:00:27,344 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:00:27,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:00:27,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1604940669, now seen corresponding path program 1 times [2020-10-13 10:00:27,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:00:27,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708479848] [2020-10-13 10:00:27,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:00:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:00:27,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:00:27,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:00:28,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:00:28,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 10:00:28,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:00:28,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1219 [2020-10-13 10:00:28,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:00:28,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:00:28,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 10:00:28,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 10:00:28,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 10:00:28,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:00:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:00:28,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:00:28,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:00:28,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:00:28,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:00:28,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:00:28,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:00:28,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:00:28,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:00:28,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:00:28,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:00:28,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 10:00:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:00:28,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:00:28,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:00:28,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 10:00:28,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:00:28,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 10:00:28,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:00:28,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:00:28,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:00:28,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 10:00:28,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:00:29,104 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:00:29,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708479848] [2020-10-13 10:00:29,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:00:29,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 10:00:29,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803041818] [2020-10-13 10:00:29,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:00:29,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:00:29,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:00:29,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:00:29,112 INFO L87 Difference]: Start difference. First operand 4621 states and 8147 transitions. Second operand 5 states. [2020-10-13 10:01:04,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:01:04,585 INFO L93 Difference]: Finished difference Result 13482 states and 24130 transitions. [2020-10-13 10:01:04,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:01:04,587 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-13 10:01:04,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:01:04,641 INFO L225 Difference]: With dead ends: 13482 [2020-10-13 10:01:04,641 INFO L226 Difference]: Without dead ends: 8867 [2020-10-13 10:01:04,660 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 10:01:04,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8867 states. [2020-10-13 10:01:04,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8867 to 8858. [2020-10-13 10:01:04,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8858 states. [2020-10-13 10:01:04,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8858 states to 8858 states and 15255 transitions. [2020-10-13 10:01:04,984 INFO L78 Accepts]: Start accepts. Automaton has 8858 states and 15255 transitions. Word has length 122 [2020-10-13 10:01:04,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:01:04,987 INFO L479 AbstractCegarLoop]: Abstraction has 8858 states and 15255 transitions. [2020-10-13 10:01:04,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:01:04,987 INFO L276 IsEmpty]: Start isEmpty. Operand 8858 states and 15255 transitions. [2020-10-13 10:01:05,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-13 10:01:05,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:01:05,010 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, 2, 2, 2, 2, 2, 2, 2, 2, 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 10:01:05,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:01:05,011 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:01:05,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:01:05,011 INFO L82 PathProgramCache]: Analyzing trace with hash -411533807, now seen corresponding path program 1 times [2020-10-13 10:01:05,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:01:05,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308999672] [2020-10-13 10:01:05,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:01:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:01:05,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:01:05,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:01:06,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:01:07,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:01:10,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:01:10,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-13 10:01:10,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:01:10,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 10:01:10,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:01:10,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:01:10,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-13 10:01:10,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 10:01:10,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:01:10,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:01:10,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:01:10,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:01:10,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:01:10,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:01:10,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:01:10,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:01:10,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:01:10,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:01:10,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:01:10,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:01:10,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:01:10,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 10:01:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:01:10,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:01:10,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:01:10,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 10:01:10,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:01:10,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 10:01:10,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:01:10,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:01:10,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:01:10,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:01:10,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:01:10,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 10:01:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:01:10,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:01:10,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:01:10,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 10:01:10,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:01:10,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-13 10:01:10,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:01:10,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:01:10,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:01:10,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 10:01:10,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:01:10,537 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-13 10:01:10,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308999672] [2020-10-13 10:01:10,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:01:10,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 10:01:10,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89057677] [2020-10-13 10:01:10,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:01:10,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:01:10,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:01:10,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:01:10,543 INFO L87 Difference]: Start difference. First operand 8858 states and 15255 transitions. Second operand 5 states. [2020-10-13 10:01:55,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:01:55,492 INFO L93 Difference]: Finished difference Result 26165 states and 45687 transitions. [2020-10-13 10:01:55,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:01:55,494 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 211 [2020-10-13 10:01:55,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:01:55,561 INFO L225 Difference]: With dead ends: 26165 [2020-10-13 10:01:55,561 INFO L226 Difference]: Without dead ends: 17313 [2020-10-13 10:01:55,591 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 10:01:55,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17313 states. [2020-10-13 10:01:56,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17313 to 17287. [2020-10-13 10:01:56,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17287 states. [2020-10-13 10:01:56,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17287 states to 17287 states and 25447 transitions. [2020-10-13 10:01:56,277 INFO L78 Accepts]: Start accepts. Automaton has 17287 states and 25447 transitions. Word has length 211 [2020-10-13 10:01:56,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:01:56,280 INFO L479 AbstractCegarLoop]: Abstraction has 17287 states and 25447 transitions. [2020-10-13 10:01:56,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:01:56,280 INFO L276 IsEmpty]: Start isEmpty. Operand 17287 states and 25447 transitions. [2020-10-13 10:01:56,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-13 10:01:56,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:01:56,289 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 10:01:56,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:01:56,290 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:01:56,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:01:56,293 INFO L82 PathProgramCache]: Analyzing trace with hash -810248763, now seen corresponding path program 1 times [2020-10-13 10:01:56,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:01:56,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489549386] [2020-10-13 10:01:56,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:01:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:01:56,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:01:56,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:01:56,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:01:57,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:01:57,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:01:58,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:02:01,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:02:01,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-13 10:02:01,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 10:02:01,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-13 10:02:01,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:02:01,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:02:01,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 204 [2020-10-13 10:02:01,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 10:02:01,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:02:01,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:02:01,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:02:01,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:02:01,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:02:01,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:02:01,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:02:01,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:02:01,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:02:01,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:02:01,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:02:01,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:02:01,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:02:01,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 10:02:01,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:02:01,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:02:01,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:02:01,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 10:02:01,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:02:01,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 10:02:01,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:02:01,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:02:01,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:02:01,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:02:01,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:02:01,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 10:02:01,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:02:01,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:02:01,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:02:01,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 10:02:01,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:02:01,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-13 10:02:01,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:02:01,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:02:01,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:02:01,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-13 10:02:01,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:02:02,003 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-13 10:02:02,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489549386] [2020-10-13 10:02:02,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:02:02,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 10:02:02,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212833227] [2020-10-13 10:02:02,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:02:02,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:02:02,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:02:02,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:02:02,010 INFO L87 Difference]: Start difference. First operand 17287 states and 25447 transitions. Second operand 6 states.