/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=WIDEST --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 03:14:08,983 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:14:08,988 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:14:09,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:14:09,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:14:09,042 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:14:09,044 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:14:09,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:14:09,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:14:09,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:14:09,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:14:09,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:14:09,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:14:09,060 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:14:09,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:14:09,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:14:09,066 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:14:09,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:14:09,069 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:14:09,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:14:09,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:14:09,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:14:09,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:14:09,083 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:14:09,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:14:09,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:14:09,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:14:09,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:14:09,104 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:14:09,107 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:14:09,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:14:09,108 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:14:09,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:14:09,112 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:14:09,113 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:14:09,114 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:14:09,115 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:14:09,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:14:09,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:14:09,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:14:09,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:14:09,119 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 03:14:09,164 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:14:09,164 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:14:09,166 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:14:09,166 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:14:09,166 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:14:09,166 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:14:09,167 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:14:09,167 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:14:09,167 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:14:09,168 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:14:09,168 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:14:09,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:14:09,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:14:09,169 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:14:09,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:14:09,170 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:14:09,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:14:09,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:14:09,170 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:14:09,171 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:14:09,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:14:09,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:14:09,171 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:14:09,171 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:14:09,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:14:09,172 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:14:09,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:14:09,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:14:09,172 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:14:09,173 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:14:09,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:14:09,660 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:14:09,665 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:14:09,668 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:14:09,668 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:14:09,670 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-09-25 03:14:09,766 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/25ac20983/39846c4e137a43268b871fa3127804c3/FLAGbe082acff [2020-09-25 03:14:10,327 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:14:10,328 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-09-25 03:14:10,340 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/25ac20983/39846c4e137a43268b871fa3127804c3/FLAGbe082acff [2020-09-25 03:14:10,651 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/25ac20983/39846c4e137a43268b871fa3127804c3 [2020-09-25 03:14:10,666 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:14:10,673 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:14:10,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:14:10,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:14:10,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:14:10,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:14:10" (1/1) ... [2020-09-25 03:14:10,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aae5b2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:14:10, skipping insertion in model container [2020-09-25 03:14:10,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:14:10" (1/1) ... [2020-09-25 03:14:10,699 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:14:10,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:14:10,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:14:10,967 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:14:10,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:14:11,006 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:14:11,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:14:11 WrapperNode [2020-09-25 03:14:11,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:14:11,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:14:11,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:14:11,008 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:14:11,021 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:14:11" (1/1) ... [2020-09-25 03:14:11,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:14:11" (1/1) ... [2020-09-25 03:14:11,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:14:11" (1/1) ... [2020-09-25 03:14:11,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:14:11" (1/1) ... [2020-09-25 03:14:11,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:14:11" (1/1) ... [2020-09-25 03:14:11,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:14:11" (1/1) ... [2020-09-25 03:14:11,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:14:11" (1/1) ... [2020-09-25 03:14:11,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:14:11,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:14:11,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:14:11,135 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:14:11,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:14:11" (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 03:14:11,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:14:11,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:14:11,216 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-09-25 03:14:11,216 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-09-25 03:14:11,217 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-09-25 03:14:11,217 INFO L138 BoogieDeclarations]: Found implementation of procedure check_final_state [2020-09-25 03:14:11,217 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_release [2020-09-25 03:14:11,217 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_llseek [2020-09-25 03:14:11,217 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_read [2020-09-25 03:14:11,218 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_open [2020-09-25 03:14:11,218 INFO L138 BoogieDeclarations]: Found implementation of procedure my_init [2020-09-25 03:14:11,218 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:14:11,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:14:11,218 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-09-25 03:14:11,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:14:11,219 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-09-25 03:14:11,219 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-09-25 03:14:11,219 INFO L130 BoogieDeclarations]: Found specification of procedure check_final_state [2020-09-25 03:14:11,219 INFO L130 BoogieDeclarations]: Found specification of procedure misc_release [2020-09-25 03:14:11,219 INFO L130 BoogieDeclarations]: Found specification of procedure misc_llseek [2020-09-25 03:14:11,220 INFO L130 BoogieDeclarations]: Found specification of procedure misc_read [2020-09-25 03:14:11,220 INFO L130 BoogieDeclarations]: Found specification of procedure misc_open [2020-09-25 03:14:11,220 INFO L130 BoogieDeclarations]: Found specification of procedure my_init [2020-09-25 03:14:11,220 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:14:11,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:14:11,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:14:11,635 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:14:11,635 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 03:14:11,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:14:11 BoogieIcfgContainer [2020-09-25 03:14:11,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:14:11,643 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:14:11,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:14:11,647 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:14:11,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:14:10" (1/3) ... [2020-09-25 03:14:11,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192ccfd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:14:11, skipping insertion in model container [2020-09-25 03:14:11,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:14:11" (2/3) ... [2020-09-25 03:14:11,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192ccfd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:14:11, skipping insertion in model container [2020-09-25 03:14:11,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:14:11" (3/3) ... [2020-09-25 03:14:11,651 INFO L109 eAbstractionObserver]: Analyzing ICFG stateful_check.c [2020-09-25 03:14:11,661 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:14:11,672 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:14:11,695 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:14:11,728 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:14:11,728 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:14:11,728 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:14:11,729 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:14:11,729 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:14:11,729 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:14:11,729 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:14:11,729 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:14:11,753 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states. [2020-09-25 03:14:11,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 03:14:11,761 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:14:11,762 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 03:14:11,763 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:14:11,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:14:11,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1008214113, now seen corresponding path program 1 times [2020-09-25 03:14:11,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:14:11,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375786336] [2020-09-25 03:14:11,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:14:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:11,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:11,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:12,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:12,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:14:12,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:14:12,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-09-25 03:14:12,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:12,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:14:12,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 03:14:12,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 03:14:12,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 03:14:12,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:14:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:12,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:12,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:12,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:14:12,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:12,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:14:12,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:12,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:14:12,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:14:12,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 03:14:12,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:14:12,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 03:14:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:12,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:12,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:12,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:14:12,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:12,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:14:12,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:12,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:14:12,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:14:12,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:14:12,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:14:12,277 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 03:14:12,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375786336] [2020-09-25 03:14:12,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:14:12,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:14:12,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609202659] [2020-09-25 03:14:12,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:14:12,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:14:12,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:14:12,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:14:12,307 INFO L87 Difference]: Start difference. First operand 105 states. Second operand 5 states. [2020-09-25 03:14:12,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:14:12,682 INFO L93 Difference]: Finished difference Result 265 states and 334 transitions. [2020-09-25 03:14:12,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:14:12,684 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-25 03:14:12,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:14:12,704 INFO L225 Difference]: With dead ends: 265 [2020-09-25 03:14:12,705 INFO L226 Difference]: Without dead ends: 164 [2020-09-25 03:14:12,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 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 03:14:12,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-09-25 03:14:12,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 160. [2020-09-25 03:14:12,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-09-25 03:14:12,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 190 transitions. [2020-09-25 03:14:12,798 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 190 transitions. Word has length 19 [2020-09-25 03:14:12,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:14:12,798 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 190 transitions. [2020-09-25 03:14:12,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:14:12,799 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 190 transitions. [2020-09-25 03:14:12,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 03:14:12,803 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:14:12,803 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 03:14:12,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:14:12,804 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:14:12,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:14:12,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1006142192, now seen corresponding path program 1 times [2020-09-25 03:14:12,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:14:12,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556687635] [2020-09-25 03:14:12,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:14:12,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:12,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:12,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:13,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:13,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:13,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 03:14:13,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:14:13,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 647 [2020-09-25 03:14:13,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:13,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:14:13,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 03:14:13,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:14:13,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:14:13,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:14:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:13,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:13,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:13,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:14:13,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:13,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:14:13,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:13,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:14:13,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:14:13,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:14:13,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:14:13,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 03:14:13,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:13,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:13,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:13,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:14:13,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:13,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:14:13,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:13,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:14:13,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:14:13,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 03:14:13,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:14:13,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 03:14:13,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:13,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:13,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:13,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:14:13,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:13,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:14:13,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:13,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:14:13,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 03:14:13,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:14:13,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:14:13,585 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 03:14:13,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556687635] [2020-09-25 03:14:13,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:14:13,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 03:14:13,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244789538] [2020-09-25 03:14:13,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 03:14:13,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:14:13,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 03:14:13,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:14:13,590 INFO L87 Difference]: Start difference. First operand 160 states and 190 transitions. Second operand 6 states. [2020-09-25 03:14:13,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:14:13,928 INFO L93 Difference]: Finished difference Result 552 states and 686 transitions. [2020-09-25 03:14:13,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 03:14:13,929 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-25 03:14:13,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:14:13,934 INFO L225 Difference]: With dead ends: 552 [2020-09-25 03:14:13,934 INFO L226 Difference]: Without dead ends: 406 [2020-09-25 03:14:13,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 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 03:14:13,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2020-09-25 03:14:13,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 273. [2020-09-25 03:14:13,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2020-09-25 03:14:13,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 328 transitions. [2020-09-25 03:14:13,985 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 328 transitions. Word has length 38 [2020-09-25 03:14:13,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:14:13,986 INFO L479 AbstractCegarLoop]: Abstraction has 273 states and 328 transitions. [2020-09-25 03:14:13,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 03:14:13,987 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 328 transitions. [2020-09-25 03:14:13,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 03:14:13,989 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:14:13,989 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 03:14:13,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:14:13,989 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:14:13,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:14:13,990 INFO L82 PathProgramCache]: Analyzing trace with hash -624757564, now seen corresponding path program 1 times [2020-09-25 03:14:13,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:14:13,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078492352] [2020-09-25 03:14:13,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:14:14,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:14,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:14,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:14,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 03:14:14,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:14,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 03:14:14,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:14,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:14:14,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 03:14:14,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:14:14,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:14:14,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:14:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:14,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:14,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:14,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:14:14,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:14,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:14:14,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:14,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:14:14,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:14:14,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:14:14,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:14:14,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 03:14:14,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:14,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:14,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:14,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:14:14,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:14,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:14:14,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:14,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:14:14,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:14:14,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:14:14,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:14:14,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 03:14:14,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:14,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:14,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:14,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:14:14,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:14,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:14:14,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:14,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:14:14,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 03:14:14,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:14:14,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:14:14,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:14:14,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078492352] [2020-09-25 03:14:14,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:14:14,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 03:14:14,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578241129] [2020-09-25 03:14:14,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 03:14:14,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:14:14,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 03:14:14,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:14:14,148 INFO L87 Difference]: Start difference. First operand 273 states and 328 transitions. Second operand 6 states. [2020-09-25 03:14:14,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:14:14,461 INFO L93 Difference]: Finished difference Result 672 states and 839 transitions. [2020-09-25 03:14:14,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 03:14:14,461 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-25 03:14:14,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:14:14,465 INFO L225 Difference]: With dead ends: 672 [2020-09-25 03:14:14,465 INFO L226 Difference]: Without dead ends: 413 [2020-09-25 03:14:14,467 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 03:14:14,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-09-25 03:14:14,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 313. [2020-09-25 03:14:14,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-09-25 03:14:14,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 381 transitions. [2020-09-25 03:14:14,495 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 381 transitions. Word has length 38 [2020-09-25 03:14:14,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:14:14,496 INFO L479 AbstractCegarLoop]: Abstraction has 313 states and 381 transitions. [2020-09-25 03:14:14,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 03:14:14,496 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 381 transitions. [2020-09-25 03:14:14,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 03:14:14,499 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:14:14,499 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 03:14:14,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:14:14,500 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:14:14,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:14:14,500 INFO L82 PathProgramCache]: Analyzing trace with hash 2144371133, now seen corresponding path program 1 times [2020-09-25 03:14:14,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:14:14,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768995977] [2020-09-25 03:14:14,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:14:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:14,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:14,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:14,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:14,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 03:14:14,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:14:14,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-09-25 03:14:14,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:14,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:14:14,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 03:14:14,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 03:14:14,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:14:14,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:14:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:14,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:14,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:14,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:14:14,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:14,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:14:14,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:14,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:14:14,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:14:14,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:14:14,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:14:14,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 03:14:14,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:14,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:14,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:14,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:14:14,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:14,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:14:14,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:14,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:14:14,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:14:14,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:14:14,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:14:14,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 03:14:14,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:14,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:14,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:14,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:14:14,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:14,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:14:14,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:14,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:14:14,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:14:14,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:14:14,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:14:14,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 03:14:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:14,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:14,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:14,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:14:14,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:14,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:14:14,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:14,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:14:14,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 03:14:14,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:14:14,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:14:14,895 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 03:14:14,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768995977] [2020-09-25 03:14:14,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:14:14,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 03:14:14,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265304070] [2020-09-25 03:14:14,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:14:14,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:14:14,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:14:14,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:14:14,898 INFO L87 Difference]: Start difference. First operand 313 states and 381 transitions. Second operand 8 states. [2020-09-25 03:14:15,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:14:15,271 INFO L93 Difference]: Finished difference Result 954 states and 1237 transitions. [2020-09-25 03:14:15,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 03:14:15,272 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2020-09-25 03:14:15,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:14:15,277 INFO L225 Difference]: With dead ends: 954 [2020-09-25 03:14:15,277 INFO L226 Difference]: Without dead ends: 655 [2020-09-25 03:14:15,278 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 03:14:15,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2020-09-25 03:14:15,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 433. [2020-09-25 03:14:15,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2020-09-25 03:14:15,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 544 transitions. [2020-09-25 03:14:15,304 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 544 transitions. Word has length 59 [2020-09-25 03:14:15,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:14:15,305 INFO L479 AbstractCegarLoop]: Abstraction has 433 states and 544 transitions. [2020-09-25 03:14:15,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:14:15,305 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 544 transitions. [2020-09-25 03:14:15,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 03:14:15,310 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:14:15,310 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, 1] [2020-09-25 03:14:15,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:14:15,310 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:14:15,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:14:15,311 INFO L82 PathProgramCache]: Analyzing trace with hash 55020698, now seen corresponding path program 1 times [2020-09-25 03:14:15,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:14:15,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939749483] [2020-09-25 03:14:15,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:14:15,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:15,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:15,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:15,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:15,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:17,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:17,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 03:14:17,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:14:17,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1945 [2020-09-25 03:14:17,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:17,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:14:17,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 03:14:17,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 03:14:17,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:14:17,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:14:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:17,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:17,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:17,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:14:17,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:17,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:14:17,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:17,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:14:17,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:14:17,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:14:17,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:14:17,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 03:14:17,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:17,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:17,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:17,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:14:17,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:17,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:14:17,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:17,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:14:17,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:14:17,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:14:17,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:14:17,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 03:14:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:17,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:17,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:17,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:14:17,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:17,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:14:17,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:17,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:14:17,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:14:17,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:14:17,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:14:17,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 03:14:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:17,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:17,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:17,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 03:14:17,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:17,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:14:17,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:17,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:14:17,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:14:17,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 03:14:17,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:14:17,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-25 03:14:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:17,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:17,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:17,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:14:17,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:17,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:14:17,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:17,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:14:17,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 03:14:17,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:14:17,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:14:17,440 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 03:14:17,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939749483] [2020-09-25 03:14:17,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:14:17,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 03:14:17,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616364813] [2020-09-25 03:14:17,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 03:14:17,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:14:17,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 03:14:17,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:14:17,443 INFO L87 Difference]: Start difference. First operand 433 states and 544 transitions. Second operand 10 states. [2020-09-25 03:14:18,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:14:18,011 INFO L93 Difference]: Finished difference Result 1376 states and 1821 transitions. [2020-09-25 03:14:18,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 03:14:18,012 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 80 [2020-09-25 03:14:18,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:14:18,018 INFO L225 Difference]: With dead ends: 1376 [2020-09-25 03:14:18,018 INFO L226 Difference]: Without dead ends: 957 [2020-09-25 03:14:18,020 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 03:14:18,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2020-09-25 03:14:18,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 513. [2020-09-25 03:14:18,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-09-25 03:14:18,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 658 transitions. [2020-09-25 03:14:18,045 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 658 transitions. Word has length 80 [2020-09-25 03:14:18,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:14:18,046 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 658 transitions. [2020-09-25 03:14:18,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 03:14:18,046 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 658 transitions. [2020-09-25 03:14:18,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 03:14:18,049 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:14:18,049 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 03:14:18,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:14:18,050 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:14:18,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:14:18,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1350272370, now seen corresponding path program 1 times [2020-09-25 03:14:18,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:14:18,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1783938912] [2020-09-25 03:14:18,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:14:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 03:14:18,073 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 03:14:18,073 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 03:14:18,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:14:18,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 03:14:18 BoogieIcfgContainer [2020-09-25 03:14:18,114 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 03:14:18,118 INFO L168 Benchmark]: Toolchain (without parser) took 7447.79 ms. Allocated memory was 139.5 MB in the beginning and 283.6 MB in the end (delta: 144.2 MB). Free memory was 103.0 MB in the beginning and 225.9 MB in the end (delta: -122.9 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2020-09-25 03:14:18,120 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 03:14:18,121 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.30 ms. Allocated memory is still 139.5 MB. Free memory was 102.3 MB in the beginning and 91.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-25 03:14:18,128 INFO L168 Benchmark]: Boogie Preprocessor took 127.18 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 91.9 MB in the beginning and 179.8 MB in the end (delta: -88.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-25 03:14:18,129 INFO L168 Benchmark]: RCFGBuilder took 507.38 ms. Allocated memory is still 201.9 MB. Free memory was 179.8 MB in the beginning and 158.5 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-09-25 03:14:18,129 INFO L168 Benchmark]: TraceAbstraction took 6470.36 ms. Allocated memory was 201.9 MB in the beginning and 283.6 MB in the end (delta: 81.8 MB). Free memory was 157.8 MB in the beginning and 225.9 MB in the end (delta: -68.1 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2020-09-25 03:14:18,143 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 333.30 ms. Allocated memory is still 139.5 MB. Free memory was 102.3 MB in the beginning and 91.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.18 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 91.9 MB in the beginning and 179.8 MB in the end (delta: -88.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 507.38 ms. Allocated memory is still 201.9 MB. Free memory was 179.8 MB in the beginning and 158.5 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6470.36 ms. Allocated memory was 201.9 MB in the beginning and 283.6 MB in the end (delta: 81.8 MB). Free memory was 157.8 MB in the beginning and 225.9 MB in the end (delta: -68.1 MB). Peak memory consumption was 13.7 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: 6.3s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 501 SDtfs, 1335 SDslu, 1333 SDs, 0 SdLazy, 828 SolverSat, 373 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=513occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 903 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 335 NumberOfCodeBlocks, 335 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 229 ConstructedInterpolants, 0 QuantifiedInterpolants, 29435 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 3/31 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...