/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 SingleStatement --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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/stateful_check.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:40:06,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:40:06,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:40:06,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:40:06,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:40:06,305 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:40:06,307 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:40:06,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:40:06,313 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:40:06,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:40:06,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:40:06,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:40:06,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:40:06,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:40:06,323 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:40:06,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:40:06,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:40:06,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:40:06,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:40:06,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:40:06,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:40:06,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:40:06,343 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:40:06,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:40:06,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:40:06,356 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:40:06,356 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:40:06,365 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:40:06,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:40:06,367 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:40:06,367 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:40:06,368 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:40:06,369 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:40:06,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:40:06,373 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:40:06,373 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:40:06,374 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:40:06,374 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:40:06,374 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:40:06,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:40:06,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:40:06,378 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 [2020-09-25 06:40:06,419 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:40:06,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:40:06,422 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:40:06,422 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:40:06,422 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:40:06,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:40:06,423 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:40:06,423 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:40:06,423 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:40:06,424 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:40:06,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:40:06,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:40:06,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:40:06,425 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:40:06,426 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:40:06,426 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:40:06,426 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:40:06,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:40:06,427 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:40:06,427 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:40:06,427 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:40:06,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:40:06,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:40:06,428 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:40:06,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:40:06,428 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:40:06,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:40:06,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:40:06,428 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:40:06,429 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 -> SingleStatement 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=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=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=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=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=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=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=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=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=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=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=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:40:06,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:40:06,940 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:40:06,945 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:40:06,946 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:40:06,947 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:40:06,948 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-09-25 06:40:07,030 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c12287268/b2c505fc1ada40bd91a16a3b375bcf03/FLAG7bf49e957 [2020-09-25 06:40:07,517 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:40:07,518 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-09-25 06:40:07,527 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c12287268/b2c505fc1ada40bd91a16a3b375bcf03/FLAG7bf49e957 [2020-09-25 06:40:07,858 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c12287268/b2c505fc1ada40bd91a16a3b375bcf03 [2020-09-25 06:40:07,873 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:40:07,879 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:40:07,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:40:07,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:40:07,884 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:40:07,885 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:40:07" (1/1) ... [2020-09-25 06:40:07,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25814f5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:07, skipping insertion in model container [2020-09-25 06:40:07,890 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:40:07" (1/1) ... [2020-09-25 06:40:07,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:40:07,926 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:40:08,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:40:08,166 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:40:08,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:40:08,205 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:40:08,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:08 WrapperNode [2020-09-25 06:40:08,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:40:08,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:40:08,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:40:08,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:40:08,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:08" (1/1) ... [2020-09-25 06:40:08,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:08" (1/1) ... [2020-09-25 06:40:08,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:08" (1/1) ... [2020-09-25 06:40:08,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:08" (1/1) ... [2020-09-25 06:40:08,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:08" (1/1) ... [2020-09-25 06:40:08,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:08" (1/1) ... [2020-09-25 06:40:08,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:08" (1/1) ... [2020-09-25 06:40:08,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:40:08,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:40:08,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:40:08,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:40:08,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:08" (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 [2020-09-25 06:40:08,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:40:08,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:40:08,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-09-25 06:40:08,408 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-09-25 06:40:08,408 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-09-25 06:40:08,408 INFO L138 BoogieDeclarations]: Found implementation of procedure check_final_state [2020-09-25 06:40:08,409 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_release [2020-09-25 06:40:08,409 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_llseek [2020-09-25 06:40:08,409 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_read [2020-09-25 06:40:08,409 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_open [2020-09-25 06:40:08,409 INFO L138 BoogieDeclarations]: Found implementation of procedure my_init [2020-09-25 06:40:08,410 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:40:08,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:40:08,410 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-09-25 06:40:08,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:40:08,410 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-09-25 06:40:08,410 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-09-25 06:40:08,411 INFO L130 BoogieDeclarations]: Found specification of procedure check_final_state [2020-09-25 06:40:08,411 INFO L130 BoogieDeclarations]: Found specification of procedure misc_release [2020-09-25 06:40:08,411 INFO L130 BoogieDeclarations]: Found specification of procedure misc_llseek [2020-09-25 06:40:08,411 INFO L130 BoogieDeclarations]: Found specification of procedure misc_read [2020-09-25 06:40:08,411 INFO L130 BoogieDeclarations]: Found specification of procedure misc_open [2020-09-25 06:40:08,411 INFO L130 BoogieDeclarations]: Found specification of procedure my_init [2020-09-25 06:40:08,412 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:40:08,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:40:08,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:40:08,771 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:40:08,771 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:40:08,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:40:08 BoogieIcfgContainer [2020-09-25 06:40:08,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:40:08,778 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:40:08,778 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:40:08,782 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:40:08,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:40:07" (1/3) ... [2020-09-25 06:40:08,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@404ae8a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:40:08, skipping insertion in model container [2020-09-25 06:40:08,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:40:08" (2/3) ... [2020-09-25 06:40:08,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@404ae8a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:40:08, skipping insertion in model container [2020-09-25 06:40:08,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:40:08" (3/3) ... [2020-09-25 06:40:08,786 INFO L109 eAbstractionObserver]: Analyzing ICFG stateful_check.c [2020-09-25 06:40:08,797 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:40:08,806 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:40:08,827 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:40:08,855 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:40:08,855 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:40:08,856 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:40:08,856 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:40:08,856 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:40:08,856 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:40:08,856 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:40:08,856 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:40:08,879 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states. [2020-09-25 06:40:08,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 06:40:08,886 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:40:08,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:40:08,887 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:40:08,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:40:08,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1008214113, now seen corresponding path program 1 times [2020-09-25 06:40:08,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:40:08,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336255136] [2020-09-25 06:40:08,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:40:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:09,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:09,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:09,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:09,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 06:40:09,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:40:09,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-09-25 06:40:09,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:09,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:09,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:40:09,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 06:40:09,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:40:09,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:40:09,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:40:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:09,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:09,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:09,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:40:09,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:09,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:40:09,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:09,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:09,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:40:09,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:40:09,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:40:09,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:09,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 06:40:09,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:09,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:09,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:09,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:40:09,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:09,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:40:09,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:09,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:09,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:40:09,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:40:09,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:40:09,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:09,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:40:09,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336255136] [2020-09-25 06:40:09,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:40:09,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:40:09,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594575135] [2020-09-25 06:40:09,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:40:09,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:40:09,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:40:09,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:40:09,375 INFO L87 Difference]: Start difference. First operand 105 states. Second operand 4 states. [2020-09-25 06:40:09,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:40:09,606 INFO L93 Difference]: Finished difference Result 199 states and 244 transitions. [2020-09-25 06:40:09,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 06:40:09,608 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-09-25 06:40:09,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:40:09,627 INFO L225 Difference]: With dead ends: 199 [2020-09-25 06:40:09,627 INFO L226 Difference]: Without dead ends: 101 [2020-09-25 06:40:09,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:40:09,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-09-25 06:40:09,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 96. [2020-09-25 06:40:09,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-09-25 06:40:09,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2020-09-25 06:40:09,733 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 19 [2020-09-25 06:40:09,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:40:09,734 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2020-09-25 06:40:09,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:40:09,734 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2020-09-25 06:40:09,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-25 06:40:09,742 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:40:09,742 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] [2020-09-25 06:40:09,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:40:09,742 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:40:09,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:40:09,743 INFO L82 PathProgramCache]: Analyzing trace with hash 837576233, now seen corresponding path program 1 times [2020-09-25 06:40:09,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:40:09,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341162883] [2020-09-25 06:40:09,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:40:09,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:09,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:09,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:09,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:40:09,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:09,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 06:40:09,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:09,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:09,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:40:09,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 06:40:09,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 06:40:09,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:09,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:40:09,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:09,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:09,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:09,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:40:09,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:09,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 06:40:09,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:09,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:09,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:40:09,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:40:09,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 06:40:09,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:40:09,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 06:40:09,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:09,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:09,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:09,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:40:09,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:09,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:40:10,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:10,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:10,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:40:10,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:40:10,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:40:10,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:10,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:40:10,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341162883] [2020-09-25 06:40:10,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:40:10,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:40:10,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612728332] [2020-09-25 06:40:10,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:40:10,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:40:10,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:40:10,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:40:10,021 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand 5 states. [2020-09-25 06:40:10,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:40:10,305 INFO L93 Difference]: Finished difference Result 171 states and 202 transitions. [2020-09-25 06:40:10,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:40:10,306 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-25 06:40:10,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:40:10,309 INFO L225 Difference]: With dead ends: 171 [2020-09-25 06:40:10,309 INFO L226 Difference]: Without dead ends: 164 [2020-09-25 06:40:10,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:40:10,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-09-25 06:40:10,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 160. [2020-09-25 06:40:10,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-09-25 06:40:10,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 190 transitions. [2020-09-25 06:40:10,336 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 190 transitions. Word has length 21 [2020-09-25 06:40:10,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:40:10,336 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 190 transitions. [2020-09-25 06:40:10,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:40:10,336 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 190 transitions. [2020-09-25 06:40:10,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 06:40:10,338 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:40:10,338 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] [2020-09-25 06:40:10,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:40:10,339 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:40:10,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:40:10,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1006142192, now seen corresponding path program 1 times [2020-09-25 06:40:10,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:40:10,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459879421] [2020-09-25 06:40:10,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:40:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:10,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:10,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:10,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:10,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:10,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 06:40:10,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:40:10,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 535 [2020-09-25 06:40:10,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:10,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:10,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:40:10,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 06:40:10,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 06:40:10,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:10,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:40:10,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:10,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:10,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:10,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:40:10,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:10,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:40:10,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:10,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:10,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:40:10,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:40:10,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:40:10,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:10,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 06:40:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:10,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:10,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:10,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:40:10,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:10,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:40:10,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:10,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:10,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:40:10,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:40:10,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:40:10,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:10,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 06:40:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:10,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:10,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:10,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:40:10,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:10,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:40:10,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:10,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:10,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:40:10,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 06:40:10,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:40:10,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:10,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:40:10,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459879421] [2020-09-25 06:40:10,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:40:10,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 06:40:10,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180240480] [2020-09-25 06:40:10,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:40:10,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:40:10,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:40:10,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:40:10,968 INFO L87 Difference]: Start difference. First operand 160 states and 190 transitions. Second operand 6 states. [2020-09-25 06:40:11,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:40:11,213 INFO L93 Difference]: Finished difference Result 411 states and 514 transitions. [2020-09-25 06:40:11,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:40:11,214 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-25 06:40:11,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:40:11,217 INFO L225 Difference]: With dead ends: 411 [2020-09-25 06:40:11,218 INFO L226 Difference]: Without dead ends: 265 [2020-09-25 06:40:11,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:40:11,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-09-25 06:40:11,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 200. [2020-09-25 06:40:11,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-09-25 06:40:11,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 243 transitions. [2020-09-25 06:40:11,245 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 243 transitions. Word has length 38 [2020-09-25 06:40:11,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:40:11,246 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 243 transitions. [2020-09-25 06:40:11,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:40:11,246 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 243 transitions. [2020-09-25 06:40:11,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 06:40:11,248 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:40:11,249 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 06:40:11,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:40:11,249 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:40:11,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:40:11,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1762986505, now seen corresponding path program 1 times [2020-09-25 06:40:11,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:40:11,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237716766] [2020-09-25 06:40:11,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:40:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:11,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:11,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:11,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:11,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:13,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:13,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 06:40:13,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:40:13,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1869 [2020-09-25 06:40:13,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:13,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:13,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:40:13,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 06:40:13,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 06:40:13,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:13,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:40:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:13,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:13,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:13,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:40:13,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:13,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:40:13,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:13,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:13,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:40:13,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:40:13,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:40:13,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:13,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 06:40:13,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:13,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:13,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:13,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:40:13,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:13,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:40:13,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:13,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:13,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:40:13,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:40:13,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 06:40:13,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:13,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:40:13,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:13,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:13,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:13,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:40:13,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:13,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:40:13,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:13,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:13,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:40:13,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:40:13,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 06:40:13,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:13,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 06:40:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:13,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:13,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:13,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:40:13,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:13,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:40:13,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:13,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:13,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:40:13,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 06:40:13,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:40:13,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:13,302 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 06:40:13,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237716766] [2020-09-25 06:40:13,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:40:13,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:40:13,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262420045] [2020-09-25 06:40:13,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:40:13,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:40:13,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:40:13,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:40:13,305 INFO L87 Difference]: Start difference. First operand 200 states and 243 transitions. Second operand 7 states. [2020-09-25 06:40:13,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:40:13,589 INFO L93 Difference]: Finished difference Result 672 states and 845 transitions. [2020-09-25 06:40:13,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:40:13,590 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2020-09-25 06:40:13,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:40:13,595 INFO L225 Difference]: With dead ends: 672 [2020-09-25 06:40:13,595 INFO L226 Difference]: Without dead ends: 486 [2020-09-25 06:40:13,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:40:13,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2020-09-25 06:40:13,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 313. [2020-09-25 06:40:13,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-09-25 06:40:13,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 381 transitions. [2020-09-25 06:40:13,628 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 381 transitions. Word has length 59 [2020-09-25 06:40:13,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:40:13,629 INFO L479 AbstractCegarLoop]: Abstraction has 313 states and 381 transitions. [2020-09-25 06:40:13,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:40:13,629 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 381 transitions. [2020-09-25 06:40:13,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 06:40:13,632 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:40:13,632 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 06:40:13,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:40:13,633 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:40:13,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:40:13,633 INFO L82 PathProgramCache]: Analyzing trace with hash 2144371133, now seen corresponding path program 1 times [2020-09-25 06:40:13,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:40:13,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065542534] [2020-09-25 06:40:13,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:40:13,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:13,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:13,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:13,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:13,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 06:40:13,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:40:13,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-09-25 06:40:13,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:13,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:13,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:40:13,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 06:40:13,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 06:40:13,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:13,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:40:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:13,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:13,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:13,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:40:13,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:13,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:40:13,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:13,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:13,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:40:13,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:40:13,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:40:13,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:13,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 06:40:13,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:13,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:13,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:13,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:40:13,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:13,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:40:13,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:13,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:13,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:40:13,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:40:13,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:40:13,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:40:13,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:40:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:13,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:14,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:14,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:40:14,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:14,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:40:14,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:14,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:14,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:40:14,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:40:14,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:40:14,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:14,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 06:40:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:14,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:14,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:14,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:40:14,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:14,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:40:14,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:14,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:14,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:40:14,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 06:40:14,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:40:14,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:14,043 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:40:14,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065542534] [2020-09-25 06:40:14,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:40:14,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:40:14,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186426135] [2020-09-25 06:40:14,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:40:14,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:40:14,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:40:14,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:40:14,046 INFO L87 Difference]: Start difference. First operand 313 states and 381 transitions. Second operand 8 states. [2020-09-25 06:40:14,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:40:14,474 INFO L93 Difference]: Finished difference Result 954 states and 1237 transitions. [2020-09-25 06:40:14,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 06:40:14,474 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2020-09-25 06:40:14,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:40:14,483 INFO L225 Difference]: With dead ends: 954 [2020-09-25 06:40:14,483 INFO L226 Difference]: Without dead ends: 655 [2020-09-25 06:40:14,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-09-25 06:40:14,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2020-09-25 06:40:14,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 433. [2020-09-25 06:40:14,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2020-09-25 06:40:14,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 544 transitions. [2020-09-25 06:40:14,521 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 544 transitions. Word has length 59 [2020-09-25 06:40:14,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:40:14,522 INFO L479 AbstractCegarLoop]: Abstraction has 433 states and 544 transitions. [2020-09-25 06:40:14,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:40:14,522 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 544 transitions. [2020-09-25 06:40:14,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 06:40:14,530 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:40:14,530 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-09-25 06:40:14,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:40:14,534 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:40:14,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:40:14,534 INFO L82 PathProgramCache]: Analyzing trace with hash -204784227, now seen corresponding path program 1 times [2020-09-25 06:40:14,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:40:14,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882766671] [2020-09-25 06:40:14,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:40:14,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:14,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:14,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:14,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:15,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:15,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 06:40:15,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:40:15,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 823 [2020-09-25 06:40:15,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:15,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:15,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:40:15,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 06:40:15,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 06:40:15,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:15,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:40:15,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:15,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:15,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:15,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:40:15,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:15,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:40:15,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:15,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:15,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:40:15,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:40:15,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:40:15,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:40:15,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 06:40:15,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:15,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:15,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:15,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:40:15,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:15,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:40:15,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:15,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:15,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:40:15,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:40:15,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:40:15,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:40:15,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:40:15,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:15,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:15,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:15,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:40:15,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:15,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:40:15,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:15,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:15,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:40:15,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:40:15,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:40:15,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:15,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 06:40:15,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:15,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:15,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:15,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 06:40:15,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:15,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:40:15,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:15,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:15,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:40:15,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:40:15,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 06:40:15,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:15,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 06:40:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:15,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:15,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:15,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:40:15,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:15,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:40:15,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:15,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:15,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:40:15,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 06:40:15,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:40:15,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:15,550 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:40:15,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882766671] [2020-09-25 06:40:15,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:40:15,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 06:40:15,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264723876] [2020-09-25 06:40:15,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 06:40:15,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:40:15,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 06:40:15,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:40:15,554 INFO L87 Difference]: Start difference. First operand 433 states and 544 transitions. Second operand 10 states. [2020-09-25 06:40:16,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:40:16,033 INFO L93 Difference]: Finished difference Result 1316 states and 1724 transitions. [2020-09-25 06:40:16,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 06:40:16,034 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 79 [2020-09-25 06:40:16,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:40:16,043 INFO L225 Difference]: With dead ends: 1316 [2020-09-25 06:40:16,043 INFO L226 Difference]: Without dead ends: 897 [2020-09-25 06:40:16,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2020-09-25 06:40:16,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2020-09-25 06:40:16,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 633. [2020-09-25 06:40:16,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2020-09-25 06:40:16,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 819 transitions. [2020-09-25 06:40:16,083 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 819 transitions. Word has length 79 [2020-09-25 06:40:16,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:40:16,085 INFO L479 AbstractCegarLoop]: Abstraction has 633 states and 819 transitions. [2020-09-25 06:40:16,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 06:40:16,085 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 819 transitions. [2020-09-25 06:40:16,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 06:40:16,087 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:40:16,087 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2020-09-25 06:40:16,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:40:16,087 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:40:16,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:40:16,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1350272370, now seen corresponding path program 1 times [2020-09-25 06:40:16,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:40:16,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330237005] [2020-09-25 06:40:16,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:40:16,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 06:40:16,112 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 06:40:16,112 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 06:40:16,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 06:40:16,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 06:40:16 BoogieIcfgContainer [2020-09-25 06:40:16,148 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 06:40:16,153 INFO L168 Benchmark]: Toolchain (without parser) took 8276.02 ms. Allocated memory was 139.5 MB in the beginning and 284.2 MB in the end (delta: 144.7 MB). Free memory was 101.3 MB in the beginning and 108.3 MB in the end (delta: -7.0 MB). Peak memory consumption was 137.7 MB. Max. memory is 7.1 GB. [2020-09-25 06:40:16,154 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-09-25 06:40:16,159 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.19 ms. Allocated memory is still 139.5 MB. Free memory was 100.6 MB in the beginning and 90.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-09-25 06:40:16,161 INFO L168 Benchmark]: Boogie Preprocessor took 119.17 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 90.3 MB in the beginning and 179.9 MB in the end (delta: -89.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-25 06:40:16,161 INFO L168 Benchmark]: RCFGBuilder took 451.30 ms. Allocated memory is still 201.9 MB. Free memory was 179.9 MB in the beginning and 158.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-09-25 06:40:16,162 INFO L168 Benchmark]: TraceAbstraction took 7369.97 ms. Allocated memory was 201.9 MB in the beginning and 284.2 MB in the end (delta: 82.3 MB). Free memory was 158.1 MB in the beginning and 108.3 MB in the end (delta: 49.8 MB). Peak memory consumption was 132.1 MB. Max. memory is 7.1 GB. [2020-09-25 06:40:16,175 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 326.19 ms. Allocated memory is still 139.5 MB. Free memory was 100.6 MB in the beginning and 90.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.17 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 90.3 MB in the beginning and 179.9 MB in the end (delta: -89.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 451.30 ms. Allocated memory is still 201.9 MB. Free memory was 179.9 MB in the beginning and 158.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7369.97 ms. Allocated memory was 201.9 MB in the beginning and 284.2 MB in the end (delta: 82.3 MB). Free memory was 158.1 MB in the beginning and 108.3 MB in the end (delta: 49.8 MB). Peak memory consumption was 132.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] int ldv_mutex = 1; [L11] int open_called = 0; [L74] int ldv_s_misc_fops_file_operations = 0; [L75] CALL my_init() [L69] open_called = 0 [L70] return 0; [L75] RET my_init() [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L81] COND TRUE ldv_s_misc_fops_file_operations==0 [L82] CALL misc_open() [L57] COND TRUE __VERIFIER_nondet_int() [L59] return 1; [L82] RET misc_open() [L83] ldv_s_misc_fops_file_operations++ [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L89] COND TRUE ldv_s_misc_fops_file_operations==1 [L90] CALL misc_read() [L52] return 0; [L90] RET misc_read() [L91] ldv_s_misc_fops_file_operations++ [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L96] case 2: [L97] COND TRUE ldv_s_misc_fops_file_operations==2 [L98] CALL misc_llseek() [L48] return 0; [L98] RET misc_llseek() [L99] ldv_s_misc_fops_file_operations++ [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L96] case 2: [L104] case 3: [L105] COND TRUE ldv_s_misc_fops_file_operations==3 [L106] CALL misc_release() [L34] COND FALSE !(\read(open_called)) [L41] CALL mutex_lock() [L16] (ldv_mutex == 1) ? 0 : __blast_assert() [L17] ldv_mutex = 2 [L41] RET mutex_lock() [L42] CALL mutex_lock() [L16] (ldv_mutex == 1) ? 0 : __blast_assert() [L16] CALL __blast_assert() [L4] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 105 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.2s, OverallIterations: 7, TraceHistogramMax: 4, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 604 SDtfs, 1211 SDslu, 1566 SDs, 0 SdLazy, 907 SolverSat, 331 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=633occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 733 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 376 NumberOfCodeBlocks, 376 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 269 ConstructedInterpolants, 0 QuantifiedInterpolants, 40435 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 8/36 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...