/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/mutex_lock_struct.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:11:20,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:11:20,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:11:20,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:11:20,545 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:11:20,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:11:20,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:11:20,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:11:20,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:11:20,568 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:11:20,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:11:20,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:11:20,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:11:20,578 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:11:20,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:11:20,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:11:20,586 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:11:20,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:11:20,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:11:20,598 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:11:20,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:11:20,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:11:20,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:11:20,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:11:20,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:11:20,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:11:20,611 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:11:20,615 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:11:20,615 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:11:20,617 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:11:20,618 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:11:20,618 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:11:20,619 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:11:20,620 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:11:20,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:11:20,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:11:20,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:11:20,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:11:20,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:11:20,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:11:20,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:11:20,627 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 11:11:20,678 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:11:20,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:11:20,680 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:11:20,680 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:11:20,680 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:11:20,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:11:20,681 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:11:20,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:11:20,681 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:11:20,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:11:20,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:11:20,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:11:20,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:11:20,682 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:11:20,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:11:20,683 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:11:20,683 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:11:20,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:11:20,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:11:20,684 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:11:20,684 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:11:20,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:11:20,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:11:20,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:11:20,685 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:11:20,685 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:11:20,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:11:20,685 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:11:20,686 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:11:20,686 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:11:21,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:11:21,176 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:11:21,181 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:11:21,183 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:11:21,183 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:11:21,185 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/mutex_lock_struct.i [2020-09-25 11:11:21,282 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ecfafb81f/6ad5001921304caeb80b298533a4dd0d/FLAGbf4d45e63 [2020-09-25 11:11:21,833 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:11:21,834 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/mutex_lock_struct.i [2020-09-25 11:11:21,841 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ecfafb81f/6ad5001921304caeb80b298533a4dd0d/FLAGbf4d45e63 [2020-09-25 11:11:22,163 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ecfafb81f/6ad5001921304caeb80b298533a4dd0d [2020-09-25 11:11:22,177 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:11:22,184 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:11:22,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:11:22,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:11:22,189 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:11:22,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:11:22" (1/1) ... [2020-09-25 11:11:22,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@390ac93f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:11:22, skipping insertion in model container [2020-09-25 11:11:22,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:11:22" (1/1) ... [2020-09-25 11:11:22,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:11:22,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:11:22,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:11:22,483 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:11:22,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:11:22,517 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:11:22,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:11:22 WrapperNode [2020-09-25 11:11:22,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:11:22,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:11:22,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:11:22,519 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:11:22,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:11:22" (1/1) ... [2020-09-25 11:11:22,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:11:22" (1/1) ... [2020-09-25 11:11:22,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:11:22" (1/1) ... [2020-09-25 11:11:22,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:11:22" (1/1) ... [2020-09-25 11:11:22,627 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:11:22" (1/1) ... [2020-09-25 11:11:22,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:11:22" (1/1) ... [2020-09-25 11:11:22,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:11:22" (1/1) ... [2020-09-25 11:11:22,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:11:22,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:11:22,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:11:22,633 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:11:22,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:11:22" (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 11:11:22,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:11:22,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:11:22,712 INFO L138 BoogieDeclarations]: Found implementation of procedure err [2020-09-25 11:11:22,713 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-09-25 11:11:22,713 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-09-25 11:11:22,713 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:11:22,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:11:22,713 INFO L130 BoogieDeclarations]: Found specification of procedure err [2020-09-25 11:11:22,714 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-09-25 11:11:22,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 11:11:22,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 11:11:22,714 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-09-25 11:11:22,714 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:11:22,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 11:11:22,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 11:11:22,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:11:22,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:11:22,975 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:11:22,975 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 11:11:22,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:11:22 BoogieIcfgContainer [2020-09-25 11:11:23,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:11:23,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:11:23,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:11:23,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:11:23,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:11:22" (1/3) ... [2020-09-25 11:11:23,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba96929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:11:23, skipping insertion in model container [2020-09-25 11:11:23,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:11:22" (2/3) ... [2020-09-25 11:11:23,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba96929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:11:23, skipping insertion in model container [2020-09-25 11:11:23,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:11:22" (3/3) ... [2020-09-25 11:11:23,015 INFO L109 eAbstractionObserver]: Analyzing ICFG mutex_lock_struct.i [2020-09-25 11:11:23,029 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:11:23,039 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:11:23,060 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:11:23,094 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:11:23,095 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:11:23,095 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:11:23,095 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:11:23,095 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:11:23,095 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:11:23,095 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:11:23,096 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:11:23,122 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-09-25 11:11:23,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 11:11:23,130 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:11:23,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:11:23,132 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:11:23,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:11:23,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1355543847, now seen corresponding path program 1 times [2020-09-25 11:11:23,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:11:23,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611200464] [2020-09-25 11:11:23,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:11:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:23,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:23,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:23,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:11:23,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:23,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-09-25 11:11:23,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:23,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:23,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:11:23,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 11:11:23,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:11:23,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 11:11:23,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:11:23,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:23,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:23,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:23,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:11:23,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:23,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:11:23,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:23,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:23,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:11:23,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:11:23,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:11:23,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:23,810 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 11:11:23,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611200464] [2020-09-25 11:11:23,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:11:23,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:11:23,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706465132] [2020-09-25 11:11:23,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:11:23,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:11:23,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:11:23,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:11:23,845 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 7 states. [2020-09-25 11:11:24,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:11:24,069 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-09-25 11:11:24,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:11:24,071 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-09-25 11:11:24,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:11:24,083 INFO L225 Difference]: With dead ends: 53 [2020-09-25 11:11:24,084 INFO L226 Difference]: Without dead ends: 25 [2020-09-25 11:11:24,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:11:24,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-09-25 11:11:24,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-09-25 11:11:24,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-25 11:11:24,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 24 transitions. [2020-09-25 11:11:24,148 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 24 transitions. Word has length 16 [2020-09-25 11:11:24,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:11:24,149 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 24 transitions. [2020-09-25 11:11:24,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:11:24,149 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 24 transitions. [2020-09-25 11:11:24,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 11:11:24,150 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:11:24,151 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:11:24,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:11:24,151 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:11:24,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:11:24,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1636243467, now seen corresponding path program 1 times [2020-09-25 11:11:24,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:11:24,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167296522] [2020-09-25 11:11:24,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:11:24,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 11:11:24,172 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 11:11:24,172 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 11:11:24,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:11:24,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 11:11:24 BoogieIcfgContainer [2020-09-25 11:11:24,202 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 11:11:24,206 INFO L168 Benchmark]: Toolchain (without parser) took 2024.85 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.0 MB in the beginning and 108.5 MB in the end (delta: -6.5 MB). Peak memory consumption was 56.4 MB. Max. memory is 7.1 GB. [2020-09-25 11:11:24,207 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 11:11:24,208 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.19 ms. Allocated memory is still 140.0 MB. Free memory was 101.4 MB in the beginning and 91.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-09-25 11:11:24,209 INFO L168 Benchmark]: Boogie Preprocessor took 114.10 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 91.7 MB in the beginning and 181.4 MB in the end (delta: -89.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-25 11:11:24,210 INFO L168 Benchmark]: RCFGBuilder took 367.26 ms. Allocated memory is still 202.9 MB. Free memory was 181.4 MB in the beginning and 166.8 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2020-09-25 11:11:24,211 INFO L168 Benchmark]: TraceAbstraction took 1200.65 ms. Allocated memory is still 202.9 MB. Free memory was 166.1 MB in the beginning and 108.5 MB in the end (delta: 57.6 MB). Peak memory consumption was 57.6 MB. Max. memory is 7.1 GB. [2020-09-25 11:11:24,215 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 333.19 ms. Allocated memory is still 140.0 MB. Free memory was 101.4 MB in the beginning and 91.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.10 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 91.7 MB in the beginning and 181.4 MB in the end (delta: -89.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 367.26 ms. Allocated memory is still 202.9 MB. Free memory was 181.4 MB in the beginning and 166.8 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1200.65 ms. Allocated memory is still 202.9 MB. Free memory was 166.1 MB in the beginning and 108.5 MB in the end (delta: 57.6 MB). Peak memory consumption was 57.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L33] struct mutex m; [L34] m.is_locked = 0 [L36] CALL mutex_lock(&m) [L21] EXPR a->is_locked [L21] COND FALSE !(a->is_locked == 1) [L22] a->is_locked = 1 [L36] RET mutex_lock(&m) [L40] CALL mutex_lock(&m) [L21] EXPR a->is_locked [L21] COND TRUE a->is_locked == 1 [L21] CALL err() [L13] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 21 SDslu, 67 SDs, 0 SdLazy, 62 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 660 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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...