/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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 07:48:49,352 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:48:49,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:48:49,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:48:49,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:48:49,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:48:49,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:48:49,388 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:48:49,389 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:48:49,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:48:49,391 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:48:49,392 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:48:49,393 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:48:49,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:48:49,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:48:49,396 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:48:49,397 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:48:49,398 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:48:49,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:48:49,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:48:49,405 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:48:49,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:48:49,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:48:49,408 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:48:49,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:48:49,412 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:48:49,412 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:48:49,413 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:48:49,414 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:48:49,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:48:49,415 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:48:49,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:48:49,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:48:49,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:48:49,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:48:49,419 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:48:49,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:48:49,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:48:49,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:48:49,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:48:49,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:48:49,423 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 07:48:49,451 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:48:49,451 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:48:49,452 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:48:49,453 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:48:49,453 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:48:49,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:48:49,453 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:48:49,454 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:48:49,454 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:48:49,454 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:48:49,454 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:48:49,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:48:49,455 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:48:49,455 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:48:49,455 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:48:49,455 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:48:49,455 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:48:49,456 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:48:49,456 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:48:49,456 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:48:49,456 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:48:49,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:48:49,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:48:49,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:48:49,457 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:48:49,457 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:48:49,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:48:49,458 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:48:49,458 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:48:49,458 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:48:49,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:48:49,965 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:48:49,970 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:48:49,972 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:48:49,972 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:48:49,973 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/mutex_lock_struct.i [2020-09-25 07:48:50,068 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41d1fcc53/d35af8397d9c4b13ae5f13714f9d1c6d/FLAG52595c064 [2020-09-25 07:48:50,589 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:48:50,589 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/mutex_lock_struct.i [2020-09-25 07:48:50,596 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41d1fcc53/d35af8397d9c4b13ae5f13714f9d1c6d/FLAG52595c064 [2020-09-25 07:48:50,933 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41d1fcc53/d35af8397d9c4b13ae5f13714f9d1c6d [2020-09-25 07:48:50,947 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:48:50,953 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:48:50,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:48:50,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:48:50,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:48:50,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:48:50" (1/1) ... [2020-09-25 07:48:50,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d972e6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:50, skipping insertion in model container [2020-09-25 07:48:50,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:48:50" (1/1) ... [2020-09-25 07:48:50,976 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:48:51,008 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:48:51,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:48:51,241 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:48:51,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:48:51,283 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:48:51,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:51 WrapperNode [2020-09-25 07:48:51,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:48:51,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:48:51,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:48:51,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:48:51,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:51" (1/1) ... [2020-09-25 07:48:51,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:51" (1/1) ... [2020-09-25 07:48:51,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:51" (1/1) ... [2020-09-25 07:48:51,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:51" (1/1) ... [2020-09-25 07:48:51,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:51" (1/1) ... [2020-09-25 07:48:51,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:51" (1/1) ... [2020-09-25 07:48:51,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:51" (1/1) ... [2020-09-25 07:48:51,411 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:48:51,412 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:48:51,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:48:51,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:48:51,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:51" (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 07:48:51,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:48:51,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:48:51,498 INFO L138 BoogieDeclarations]: Found implementation of procedure err [2020-09-25 07:48:51,498 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-09-25 07:48:51,498 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-09-25 07:48:51,498 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:48:51,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:48:51,499 INFO L130 BoogieDeclarations]: Found specification of procedure err [2020-09-25 07:48:51,499 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-09-25 07:48:51,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 07:48:51,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 07:48:51,500 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-09-25 07:48:51,500 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:48:51,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 07:48:51,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 07:48:51,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:48:51,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:48:51,745 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:48:51,746 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 07:48:51,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:48:51 BoogieIcfgContainer [2020-09-25 07:48:51,751 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:48:51,752 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:48:51,752 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:48:51,756 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:48:51,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:48:50" (1/3) ... [2020-09-25 07:48:51,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@631f32e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:48:51, skipping insertion in model container [2020-09-25 07:48:51,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:51" (2/3) ... [2020-09-25 07:48:51,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@631f32e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:48:51, skipping insertion in model container [2020-09-25 07:48:51,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:48:51" (3/3) ... [2020-09-25 07:48:51,761 INFO L109 eAbstractionObserver]: Analyzing ICFG mutex_lock_struct.i [2020-09-25 07:48:51,774 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:48:51,784 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:48:51,807 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:48:51,845 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:48:51,845 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:48:51,845 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:48:51,846 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:48:51,847 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:48:51,847 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:48:51,847 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:48:51,848 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:48:51,871 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-09-25 07:48:51,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 07:48:51,878 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:51,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:48:51,880 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:51,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:51,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1355543847, now seen corresponding path program 1 times [2020-09-25 07:48:51,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:51,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101221277] [2020-09-25 07:48:51,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:52,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:52,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:52,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:48:52,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:52,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-09-25 07:48:52,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:52,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:52,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:48:52,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 07:48:52,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:48:52,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:48:52,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:52,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:52,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:52,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:48:52,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:52,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:48:52,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:52,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:52,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:52,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:52,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:52,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:52,505 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 07:48:52,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101221277] [2020-09-25 07:48:52,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:52,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:48:52,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584960332] [2020-09-25 07:48:52,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:48:52,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:52,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:48:52,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:48:52,539 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 7 states. [2020-09-25 07:48:52,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:52,745 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-09-25 07:48:52,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 07:48:52,747 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-09-25 07:48:52,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:52,758 INFO L225 Difference]: With dead ends: 53 [2020-09-25 07:48:52,758 INFO L226 Difference]: Without dead ends: 25 [2020-09-25 07:48:52,763 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 07:48:52,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-09-25 07:48:52,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-09-25 07:48:52,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-25 07:48:52,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 24 transitions. [2020-09-25 07:48:52,814 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 24 transitions. Word has length 16 [2020-09-25 07:48:52,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:52,814 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 24 transitions. [2020-09-25 07:48:52,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:48:52,815 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 24 transitions. [2020-09-25 07:48:52,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 07:48:52,816 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:52,816 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 07:48:52,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:48:52,817 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:52,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:52,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1636243467, now seen corresponding path program 1 times [2020-09-25 07:48:52,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:52,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411786021] [2020-09-25 07:48:52,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:52,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 07:48:52,836 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 07:48:52,836 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 07:48:52,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:48:52,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 07:48:52 BoogieIcfgContainer [2020-09-25 07:48:52,872 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 07:48:52,876 INFO L168 Benchmark]: Toolchain (without parser) took 1925.27 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 102.5 MB in the beginning and 107.2 MB in the end (delta: -4.7 MB). Peak memory consumption was 57.7 MB. Max. memory is 7.1 GB. [2020-09-25 07:48:52,879 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-09-25 07:48:52,881 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.14 ms. Allocated memory is still 138.9 MB. Free memory was 101.9 MB in the beginning and 92.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-09-25 07:48:52,882 INFO L168 Benchmark]: Boogie Preprocessor took 126.80 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 92.2 MB in the beginning and 179.3 MB in the end (delta: -87.1 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-25 07:48:52,884 INFO L168 Benchmark]: RCFGBuilder took 339.51 ms. Allocated memory is still 201.3 MB. Free memory was 179.3 MB in the beginning and 164.9 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2020-09-25 07:48:52,885 INFO L168 Benchmark]: TraceAbstraction took 1119.66 ms. Allocated memory is still 201.3 MB. Free memory was 164.2 MB in the beginning and 107.2 MB in the end (delta: 57.0 MB). Peak memory consumption was 57.0 MB. Max. memory is 7.1 GB. [2020-09-25 07:48:52,893 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 330.14 ms. Allocated memory is still 138.9 MB. Free memory was 101.9 MB in the beginning and 92.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.80 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 92.2 MB in the beginning and 179.3 MB in the end (delta: -87.1 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 339.51 ms. Allocated memory is still 201.3 MB. Free memory was 179.3 MB in the beginning and 164.9 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1119.66 ms. Allocated memory is still 201.3 MB. Free memory was 164.2 MB in the beginning and 107.2 MB in the end (delta: 57.0 MB). Peak memory consumption was 57.0 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, 0.4s 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...