./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/locks/test_locks_15-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/locks/test_locks_15-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 04dfa849b43716e8587b0fc4953cadbe3968c4e3 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/locks/test_locks_15-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 04dfa849b43716e8587b0fc4953cadbe3968c4e3 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:16:28,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:16:28,620 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:16:28,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:16:28,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:16:28,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:16:28,655 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:16:28,658 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:16:28,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:16:28,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:16:28,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:16:28,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:16:28,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:16:28,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:16:28,665 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:16:28,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:16:28,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:16:28,668 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:16:28,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:16:28,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:16:28,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:16:28,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:16:28,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:16:28,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:16:28,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:16:28,679 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:16:28,679 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:16:28,682 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:16:28,682 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:16:28,684 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:16:28,684 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:16:28,685 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:16:28,685 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:16:28,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:16:28,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:16:28,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:16:28,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:16:28,688 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:16:28,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:16:28,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:16:28,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:16:28,691 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-20 06:16:28,714 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:16:28,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:16:28,715 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:16:28,716 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:16:28,716 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:16:28,716 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:16:28,716 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:16:28,717 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:16:28,717 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:16:28,717 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:16:28,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:16:28,718 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 06:16:28,718 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 06:16:28,718 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 06:16:28,718 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:16:28,719 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 06:16:28,719 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:16:28,719 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:16:28,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:16:28,720 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:16:28,720 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:16:28,720 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:16:28,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:16:28,721 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:16:28,721 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:16:28,721 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:16:28,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:16:28,721 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:16:28,722 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04dfa849b43716e8587b0fc4953cadbe3968c4e3 [2020-10-20 06:16:28,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:16:28,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:16:28,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:16:28,937 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:16:28,938 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:16:28,939 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_15-1.c [2020-10-20 06:16:28,998 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca5988086/7d97c67d9581459e98487cfbd4e4841d/FLAGa766ff02e [2020-10-20 06:16:29,472 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:16:29,473 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_15-1.c [2020-10-20 06:16:29,486 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca5988086/7d97c67d9581459e98487cfbd4e4841d/FLAGa766ff02e [2020-10-20 06:16:29,849 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca5988086/7d97c67d9581459e98487cfbd4e4841d [2020-10-20 06:16:29,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:16:29,860 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 06:16:29,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:16:29,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:16:29,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:16:29,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:16:29" (1/1) ... [2020-10-20 06:16:29,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3150fa7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:29, skipping insertion in model container [2020-10-20 06:16:29,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:16:29" (1/1) ... [2020-10-20 06:16:29,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:16:29,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:16:30,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:16:30,210 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:16:30,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:16:30,262 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:16:30,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:30 WrapperNode [2020-10-20 06:16:30,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:16:30,264 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:16:30,264 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:16:30,264 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:16:30,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:30" (1/1) ... [2020-10-20 06:16:30,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:30" (1/1) ... [2020-10-20 06:16:30,286 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:30" (1/1) ... [2020-10-20 06:16:30,287 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:30" (1/1) ... [2020-10-20 06:16:30,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:30" (1/1) ... [2020-10-20 06:16:30,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:30" (1/1) ... [2020-10-20 06:16:30,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:30" (1/1) ... [2020-10-20 06:16:30,313 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:16:30,314 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:16:30,314 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:16:30,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:16:30,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:16:30,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 06:16:30,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:16:30,379 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-20 06:16:30,379 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 06:16:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 06:16:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-20 06:16:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-20 06:16:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:16:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 06:16:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 06:16:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 06:16:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 06:16:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:16:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 06:16:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 06:16:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:16:30,846 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:16:30,847 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-20 06:16:30,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:16:30 BoogieIcfgContainer [2020-10-20 06:16:30,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:16:30,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:16:30,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:16:30,853 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:16:30,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:16:29" (1/3) ... [2020-10-20 06:16:30,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65da71f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:16:30, skipping insertion in model container [2020-10-20 06:16:30,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:30" (2/3) ... [2020-10-20 06:16:30,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65da71f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:16:30, skipping insertion in model container [2020-10-20 06:16:30,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:16:30" (3/3) ... [2020-10-20 06:16:30,857 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_15-1.c [2020-10-20 06:16:30,869 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:16:30,876 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-20 06:16:30,890 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-20 06:16:30,910 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:16:30,910 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 06:16:30,910 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:16:30,910 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:16:30,911 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:16:30,911 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:16:30,911 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:16:30,911 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:16:30,926 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-10-20 06:16:30,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 06:16:30,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:30,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:16:30,936 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:30,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:30,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1650782030, now seen corresponding path program 1 times [2020-10-20 06:16:30,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:30,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571698150] [2020-10-20 06:16:30,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:31,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:31,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:31,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:31,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571698150] [2020-10-20 06:16:31,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:31,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:16:31,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828923310] [2020-10-20 06:16:31,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:16:31,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:31,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:16:31,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:16:31,202 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2020-10-20 06:16:31,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:31,254 INFO L93 Difference]: Finished difference Result 61 states and 105 transitions. [2020-10-20 06:16:31,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:16:31,257 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-20 06:16:31,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:31,268 INFO L225 Difference]: With dead ends: 61 [2020-10-20 06:16:31,269 INFO L226 Difference]: Without dead ends: 56 [2020-10-20 06:16:31,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:16:31,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-20 06:16:31,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-20 06:16:31,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-20 06:16:31,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 100 transitions. [2020-10-20 06:16:31,311 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 100 transitions. Word has length 9 [2020-10-20 06:16:31,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:31,311 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 100 transitions. [2020-10-20 06:16:31,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:16:31,312 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 100 transitions. [2020-10-20 06:16:31,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-20 06:16:31,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:31,314 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] [2020-10-20 06:16:31,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:16:31,315 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:31,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:31,315 INFO L82 PathProgramCache]: Analyzing trace with hash 868347282, now seen corresponding path program 1 times [2020-10-20 06:16:31,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:31,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897484496] [2020-10-20 06:16:31,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:31,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:31,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:31,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:31,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897484496] [2020-10-20 06:16:31,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:31,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:16:31,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263211163] [2020-10-20 06:16:31,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:16:31,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:31,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:16:31,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:16:31,464 INFO L87 Difference]: Start difference. First operand 56 states and 100 transitions. Second operand 4 states. [2020-10-20 06:16:31,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:31,753 INFO L93 Difference]: Finished difference Result 103 states and 190 transitions. [2020-10-20 06:16:31,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:16:31,754 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-20 06:16:31,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:31,757 INFO L225 Difference]: With dead ends: 103 [2020-10-20 06:16:31,758 INFO L226 Difference]: Without dead ends: 103 [2020-10-20 06:16:31,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:16:31,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-20 06:16:31,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 72. [2020-10-20 06:16:31,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-20 06:16:31,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 131 transitions. [2020-10-20 06:16:31,772 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 131 transitions. Word has length 27 [2020-10-20 06:16:31,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:31,773 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 131 transitions. [2020-10-20 06:16:31,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:16:31,773 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 131 transitions. [2020-10-20 06:16:31,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-20 06:16:31,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:31,775 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] [2020-10-20 06:16:31,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:16:31,776 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:31,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:31,776 INFO L82 PathProgramCache]: Analyzing trace with hash 868570234, now seen corresponding path program 1 times [2020-10-20 06:16:31,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:31,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259721748] [2020-10-20 06:16:31,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:31,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:31,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:31,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:31,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:31,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259721748] [2020-10-20 06:16:31,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:31,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:16:31,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428549773] [2020-10-20 06:16:31,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:16:31,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:31,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:16:31,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:16:31,895 INFO L87 Difference]: Start difference. First operand 72 states and 131 transitions. Second operand 4 states. [2020-10-20 06:16:32,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:32,131 INFO L93 Difference]: Finished difference Result 104 states and 190 transitions. [2020-10-20 06:16:32,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:16:32,132 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-20 06:16:32,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:32,134 INFO L225 Difference]: With dead ends: 104 [2020-10-20 06:16:32,134 INFO L226 Difference]: Without dead ends: 104 [2020-10-20 06:16:32,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:16:32,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-20 06:16:32,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-20 06:16:32,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-20 06:16:32,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 189 transitions. [2020-10-20 06:16:32,146 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 189 transitions. Word has length 27 [2020-10-20 06:16:32,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:32,146 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 189 transitions. [2020-10-20 06:16:32,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:16:32,147 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 189 transitions. [2020-10-20 06:16:32,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-20 06:16:32,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:32,148 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] [2020-10-20 06:16:32,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 06:16:32,149 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:32,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:32,150 INFO L82 PathProgramCache]: Analyzing trace with hash -820596460, now seen corresponding path program 1 times [2020-10-20 06:16:32,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:32,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933563843] [2020-10-20 06:16:32,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:32,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:16:32,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:32,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:32,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933563843] [2020-10-20 06:16:32,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:32,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:16:32,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278028205] [2020-10-20 06:16:32,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:16:32,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:16:32,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:16:32,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:16:32,232 INFO L87 Difference]: Start difference. First operand 103 states and 189 transitions. Second operand 4 states. [2020-10-20 06:16:32,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:32,448 INFO L93 Difference]: Finished difference Result 106 states and 190 transitions. [2020-10-20 06:16:32,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:16:32,448 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-20 06:16:32,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:32,450 INFO L225 Difference]: With dead ends: 106 [2020-10-20 06:16:32,450 INFO L226 Difference]: Without dead ends: 106 [2020-10-20 06:16:32,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:16:32,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-20 06:16:32,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-20 06:16:32,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-20 06:16:32,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 189 transitions. [2020-10-20 06:16:32,460 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 189 transitions. Word has length 27 [2020-10-20 06:16:32,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:32,461 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 189 transitions. [2020-10-20 06:16:32,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:16:32,461 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 189 transitions. [2020-10-20 06:16:32,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-20 06:16:32,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:32,463 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] [2020-10-20 06:16:32,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 06:16:32,463 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:32,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:32,464 INFO L82 PathProgramCache]: Analyzing trace with hash -820373508, now seen corresponding path program 1 times [2020-10-20 06:16:32,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:16:32,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435157487] [2020-10-20 06:16:32,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:16:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:16:32,509 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:16:32,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:16:32,531 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:16:32,566 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:16:32,567 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 06:16:32,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 06:16:32,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:16:32 BoogieIcfgContainer [2020-10-20 06:16:32,635 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:16:32,635 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:16:32,636 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:16:32,636 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:16:32,637 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:16:30" (3/4) ... [2020-10-20 06:16:32,642 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:16:32,642 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:16:32,645 INFO L168 Benchmark]: Toolchain (without parser) took 2789.33 ms. Allocated memory was 34.1 MB in the beginning and 55.6 MB in the end (delta: 21.5 MB). Free memory was 10.1 MB in the beginning and 30.5 MB in the end (delta: -20.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:16:32,646 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 33.0 MB. Free memory was 17.5 MB in the beginning and 17.4 MB in the end (delta: 57.7 kB). Peak memory consumption was 57.7 kB. Max. memory is 14.3 GB. [2020-10-20 06:16:32,648 INFO L168 Benchmark]: CACSL2BoogieTranslator took 400.30 ms. Allocated memory was 34.1 MB in the beginning and 43.5 MB in the end (delta: 9.4 MB). Free memory was 9.3 MB in the beginning and 24.2 MB in the end (delta: -14.9 MB). Peak memory consumption was 6.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:16:32,649 INFO L168 Benchmark]: Boogie Preprocessor took 49.96 ms. Allocated memory is still 43.5 MB. Free memory was 24.2 MB in the beginning and 22.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:16:32,650 INFO L168 Benchmark]: RCFGBuilder took 534.69 ms. Allocated memory was 43.5 MB in the beginning and 45.1 MB in the end (delta: 1.6 MB). Free memory was 22.1 MB in the beginning and 23.2 MB in the end (delta: -1.2 MB). Peak memory consumption was 9.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:16:32,651 INFO L168 Benchmark]: TraceAbstraction took 1785.13 ms. Allocated memory was 45.1 MB in the beginning and 55.6 MB in the end (delta: 10.5 MB). Free memory was 22.7 MB in the beginning and 31.1 MB in the end (delta: -8.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:16:32,652 INFO L168 Benchmark]: Witness Printer took 6.76 ms. Allocated memory is still 55.6 MB. Free memory was 31.1 MB in the beginning and 30.5 MB in the end (delta: 569.0 kB). Peak memory consumption was 569.0 kB. Max. memory is 14.3 GB. [2020-10-20 06:16:32,657 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 33.0 MB. Free memory was 17.5 MB in the beginning and 17.4 MB in the end (delta: 57.7 kB). Peak memory consumption was 57.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 400.30 ms. Allocated memory was 34.1 MB in the beginning and 43.5 MB in the end (delta: 9.4 MB). Free memory was 9.3 MB in the beginning and 24.2 MB in the end (delta: -14.9 MB). Peak memory consumption was 6.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 49.96 ms. Allocated memory is still 43.5 MB. Free memory was 24.2 MB in the beginning and 22.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 534.69 ms. Allocated memory was 43.5 MB in the beginning and 45.1 MB in the end (delta: 1.6 MB). Free memory was 22.1 MB in the beginning and 23.2 MB in the end (delta: -1.2 MB). Peak memory consumption was 9.6 MB. Max. memory is 14.3 GB. * TraceAbstraction took 1785.13 ms. Allocated memory was 45.1 MB in the beginning and 55.6 MB in the end (delta: 10.5 MB). Free memory was 22.7 MB in the beginning and 31.1 MB in the end (delta: -8.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. * Witness Printer took 6.76 ms. Allocated memory is still 55.6 MB. Free memory was 31.1 MB in the beginning and 30.5 MB in the end (delta: 569.0 kB). Peak memory consumption was 569.0 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 3. Possible FailurePath: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L26] int p7 = __VERIFIER_nondet_int(); [L27] int lk7; [L29] int p8 = __VERIFIER_nondet_int(); [L30] int lk8; [L32] int p9 = __VERIFIER_nondet_int(); [L33] int lk9; [L35] int p10 = __VERIFIER_nondet_int(); [L36] int lk10; [L38] int p11 = __VERIFIER_nondet_int(); [L39] int lk11; [L41] int p12 = __VERIFIER_nondet_int(); [L42] int lk12; [L44] int p13 = __VERIFIER_nondet_int(); [L45] int lk13; [L47] int p14 = __VERIFIER_nondet_int(); [L48] int lk14; [L50] int p15 = __VERIFIER_nondet_int(); [L51] int lk15; [L54] int cond; VAL [p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L56] COND TRUE 1 [L57] cond = __VERIFIER_nondet_int() [L58] COND FALSE !(cond == 0) [L61] lk1 = 0 [L63] lk2 = 0 [L65] lk3 = 0 [L67] lk4 = 0 [L69] lk5 = 0 [L71] lk6 = 0 [L73] lk7 = 0 [L75] lk8 = 0 [L77] lk9 = 0 [L79] lk10 = 0 [L81] lk11 = 0 [L83] lk12 = 0 [L85] lk13 = 0 [L87] lk14 = 0 [L89] lk15 = 0 VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=0, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L93] COND FALSE !(p1 != 0) VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=0, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L97] COND FALSE !(p2 != 0) VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=0, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L101] COND TRUE p3 != 0 [L102] lk3 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L105] COND TRUE p4 != 0 [L106] lk4 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L109] COND TRUE p5 != 0 [L110] lk5 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L113] COND TRUE p6 != 0 [L114] lk6 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L117] COND TRUE p7 != 0 [L118] lk7 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=0, lk9=0, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L121] COND TRUE p8 != 0 [L122] lk8 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=0, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L125] COND TRUE p9 != 0 [L126] lk9 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L129] COND FALSE !(p10 != 0) VAL [cond=1, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L133] COND TRUE p11 != 0 [L134] lk11 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=1, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L137] COND TRUE p12 != 0 [L138] lk12 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=1, lk12=1, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L141] COND TRUE p13 != 0 [L142] lk13 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L145] COND TRUE p14 != 0 [L146] lk14 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=1, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L149] COND TRUE p15 != 0 [L150] lk15 = 1 VAL [cond=1, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=1, lk15=1, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L155] COND FALSE !(p1 != 0) VAL [cond=1, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=1, lk15=1, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L160] COND FALSE !(p2 != 0) VAL [cond=1, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=1, lk15=1, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=-5, p12=-3, p13=1, p14=1, p15=1, p2=0, p3=1, p4=-4, p5=6, p6=-1, p7=1, p8=-2, p9=1] [L233] CALL reach_error() [L3] __assert_fail("0", "test_locks_15-1.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 65 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 487 SDtfs, 769 SDslu, 24 SDs, 0 SdLazy, 292 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=4, 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, 4 MinimizatonAttempts, 33 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 7454 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:16:34,820 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:16:34,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:16:34,854 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:16:34,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:16:34,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:16:34,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:16:34,869 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:16:34,873 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:16:34,876 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:16:34,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:16:34,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:16:34,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:16:34,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:16:34,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:16:34,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:16:34,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:16:34,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:16:34,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:16:34,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:16:34,903 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:16:34,904 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:16:34,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:16:34,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:16:34,924 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:16:34,927 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:16:34,927 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:16:34,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:16:34,929 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:16:34,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:16:34,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:16:34,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:16:34,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:16:34,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:16:34,940 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:16:34,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:16:34,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:16:34,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:16:34,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:16:34,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:16:34,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:16:34,948 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-10-20 06:16:34,987 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:16:34,987 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:16:34,989 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:16:34,990 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:16:34,990 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:16:34,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:16:34,991 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:16:34,991 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:16:34,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:16:34,991 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:16:34,992 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:16:34,993 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 06:16:34,993 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 06:16:34,993 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 06:16:34,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:16:34,994 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 06:16:34,994 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 06:16:34,994 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 06:16:34,995 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:16:34,995 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:16:34,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:16:34,996 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:16:34,996 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:16:34,996 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:16:34,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:16:34,997 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:16:34,997 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:16:34,997 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 06:16:34,998 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 06:16:34,998 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:16:34,998 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 06:16:34,998 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04dfa849b43716e8587b0fc4953cadbe3968c4e3 [2020-10-20 06:16:35,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:16:35,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:16:35,243 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:16:35,244 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:16:35,246 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:16:35,247 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_15-1.c [2020-10-20 06:16:35,322 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2d353cc3/bf45897b3f15476c9de600ba61f01c03/FLAG97188befc [2020-10-20 06:16:35,846 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:16:35,847 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_15-1.c [2020-10-20 06:16:35,857 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2d353cc3/bf45897b3f15476c9de600ba61f01c03/FLAG97188befc [2020-10-20 06:16:36,202 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2d353cc3/bf45897b3f15476c9de600ba61f01c03 [2020-10-20 06:16:36,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:16:36,213 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 06:16:36,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:16:36,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:16:36,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:16:36,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:16:36" (1/1) ... [2020-10-20 06:16:36,223 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ce7f76a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:36, skipping insertion in model container [2020-10-20 06:16:36,223 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:16:36" (1/1) ... [2020-10-20 06:16:36,232 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:16:36,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:16:36,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:16:36,512 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:16:36,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:16:36,569 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:16:36,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:36 WrapperNode [2020-10-20 06:16:36,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:16:36,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:16:36,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:16:36,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:16:36,582 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:36" (1/1) ... [2020-10-20 06:16:36,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:36" (1/1) ... [2020-10-20 06:16:36,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:36" (1/1) ... [2020-10-20 06:16:36,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:36" (1/1) ... [2020-10-20 06:16:36,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:36" (1/1) ... [2020-10-20 06:16:36,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:36" (1/1) ... [2020-10-20 06:16:36,613 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:36" (1/1) ... [2020-10-20 06:16:36,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:16:36,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:16:36,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:16:36,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:16:36,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:16:36,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 06:16:36,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:16:36,679 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-20 06:16:36,679 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 06:16:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 06:16:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-20 06:16:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-20 06:16:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:16:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 06:16:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 06:16:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 06:16:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 06:16:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:16:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-10-20 06:16:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-10-20 06:16:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:16:37,210 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:16:37,211 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-20 06:16:37,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:16:37 BoogieIcfgContainer [2020-10-20 06:16:37,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:16:37,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:16:37,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:16:37,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:16:37,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:16:36" (1/3) ... [2020-10-20 06:16:37,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@240706ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:16:37, skipping insertion in model container [2020-10-20 06:16:37,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:16:36" (2/3) ... [2020-10-20 06:16:37,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@240706ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:16:37, skipping insertion in model container [2020-10-20 06:16:37,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:16:37" (3/3) ... [2020-10-20 06:16:37,223 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_15-1.c [2020-10-20 06:16:37,235 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:16:37,243 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-20 06:16:37,261 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-20 06:16:37,284 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:16:37,284 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 06:16:37,285 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:16:37,285 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:16:37,286 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:16:37,286 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:16:37,286 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:16:37,286 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:16:37,305 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-10-20 06:16:37,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 06:16:37,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:37,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:16:37,318 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:37,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:37,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1650782030, now seen corresponding path program 1 times [2020-10-20 06:16:37,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:16:37,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453800945] [2020-10-20 06:16:37,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-20 06:16:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:37,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 06:16:37,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:16:37,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:37,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:16:37,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:37,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453800945] [2020-10-20 06:16:37,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:37,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 06:16:37,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915893791] [2020-10-20 06:16:37,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 06:16:37,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:16:37,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 06:16:37,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 06:16:37,549 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 2 states. [2020-10-20 06:16:37,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:37,574 INFO L93 Difference]: Finished difference Result 61 states and 105 transitions. [2020-10-20 06:16:37,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 06:16:37,576 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-20 06:16:37,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:37,587 INFO L225 Difference]: With dead ends: 61 [2020-10-20 06:16:37,588 INFO L226 Difference]: Without dead ends: 56 [2020-10-20 06:16:37,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 06:16:37,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-20 06:16:37,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-20 06:16:37,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-20 06:16:37,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 100 transitions. [2020-10-20 06:16:37,638 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 100 transitions. Word has length 9 [2020-10-20 06:16:37,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:37,639 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 100 transitions. [2020-10-20 06:16:37,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 06:16:37,639 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 100 transitions. [2020-10-20 06:16:37,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-20 06:16:37,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:37,641 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] [2020-10-20 06:16:37,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 06:16:37,856 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:37,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:37,857 INFO L82 PathProgramCache]: Analyzing trace with hash 868347282, now seen corresponding path program 1 times [2020-10-20 06:16:37,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:16:37,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1826568411] [2020-10-20 06:16:37,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-20 06:16:37,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:37,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:16:37,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:16:37,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:37,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:16:37,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:37,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1826568411] [2020-10-20 06:16:37,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:37,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-20 06:16:37,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488850729] [2020-10-20 06:16:38,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:16:38,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:16:38,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:16:38,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:16:38,002 INFO L87 Difference]: Start difference. First operand 56 states and 100 transitions. Second operand 3 states. [2020-10-20 06:16:38,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:38,040 INFO L93 Difference]: Finished difference Result 103 states and 190 transitions. [2020-10-20 06:16:38,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:16:38,042 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-20 06:16:38,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:38,045 INFO L225 Difference]: With dead ends: 103 [2020-10-20 06:16:38,045 INFO L226 Difference]: Without dead ends: 103 [2020-10-20 06:16:38,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:16:38,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-20 06:16:38,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 72. [2020-10-20 06:16:38,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-20 06:16:38,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 131 transitions. [2020-10-20 06:16:38,069 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 131 transitions. Word has length 27 [2020-10-20 06:16:38,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:38,071 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 131 transitions. [2020-10-20 06:16:38,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:16:38,073 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 131 transitions. [2020-10-20 06:16:38,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-20 06:16:38,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:38,076 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] [2020-10-20 06:16:38,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 06:16:38,290 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:38,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:38,291 INFO L82 PathProgramCache]: Analyzing trace with hash 868570234, now seen corresponding path program 1 times [2020-10-20 06:16:38,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:16:38,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404973553] [2020-10-20 06:16:38,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-20 06:16:38,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:38,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:16:38,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:16:38,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:38,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:16:38,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:38,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404973553] [2020-10-20 06:16:38,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:38,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-20 06:16:38,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725358959] [2020-10-20 06:16:38,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:16:38,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:16:38,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:16:38,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:16:38,423 INFO L87 Difference]: Start difference. First operand 72 states and 131 transitions. Second operand 3 states. [2020-10-20 06:16:38,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:38,458 INFO L93 Difference]: Finished difference Result 104 states and 190 transitions. [2020-10-20 06:16:38,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:16:38,459 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-20 06:16:38,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:38,461 INFO L225 Difference]: With dead ends: 104 [2020-10-20 06:16:38,461 INFO L226 Difference]: Without dead ends: 104 [2020-10-20 06:16:38,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:16:38,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-20 06:16:38,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-20 06:16:38,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-20 06:16:38,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 189 transitions. [2020-10-20 06:16:38,478 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 189 transitions. Word has length 27 [2020-10-20 06:16:38,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:38,478 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 189 transitions. [2020-10-20 06:16:38,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:16:38,479 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 189 transitions. [2020-10-20 06:16:38,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-20 06:16:38,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:38,480 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] [2020-10-20 06:16:38,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-20 06:16:38,702 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:38,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:38,702 INFO L82 PathProgramCache]: Analyzing trace with hash -820596460, now seen corresponding path program 1 times [2020-10-20 06:16:38,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:16:38,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [39521048] [2020-10-20 06:16:38,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-20 06:16:38,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:16:38,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:16:38,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:16:38,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:38,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:16:38,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:16:38,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [39521048] [2020-10-20 06:16:38,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:16:38,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-20 06:16:38,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623694096] [2020-10-20 06:16:38,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:16:38,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:16:38,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:16:38,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:16:38,833 INFO L87 Difference]: Start difference. First operand 103 states and 189 transitions. Second operand 3 states. [2020-10-20 06:16:38,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:16:38,853 INFO L93 Difference]: Finished difference Result 106 states and 190 transitions. [2020-10-20 06:16:38,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:16:38,854 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-20 06:16:38,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:16:38,856 INFO L225 Difference]: With dead ends: 106 [2020-10-20 06:16:38,856 INFO L226 Difference]: Without dead ends: 106 [2020-10-20 06:16:38,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:16:38,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-20 06:16:38,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-20 06:16:38,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-20 06:16:38,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 189 transitions. [2020-10-20 06:16:38,868 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 189 transitions. Word has length 27 [2020-10-20 06:16:38,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:16:38,869 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 189 transitions. [2020-10-20 06:16:38,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:16:38,869 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 189 transitions. [2020-10-20 06:16:38,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-20 06:16:38,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:16:38,871 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] [2020-10-20 06:16:39,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-20 06:16:39,085 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:16:39,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:16:39,086 INFO L82 PathProgramCache]: Analyzing trace with hash -820373508, now seen corresponding path program 1 times [2020-10-20 06:16:39,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:16:39,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1879257368] [2020-10-20 06:16:39,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-20 06:16:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:16:39,182 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:16:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:16:39,232 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:16:39,292 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-20 06:16:39,292 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 06:16:39,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-20 06:16:39,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:16:39 BoogieIcfgContainer [2020-10-20 06:16:39,573 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:16:39,573 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:16:39,573 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:16:39,574 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:16:39,574 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:16:37" (3/4) ... [2020-10-20 06:16:39,578 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:16:39,578 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:16:39,581 INFO L168 Benchmark]: Toolchain (without parser) took 3372.66 ms. Allocated memory was 40.9 MB in the beginning and 49.8 MB in the end (delta: 8.9 MB). Free memory was 18.9 MB in the beginning and 20.7 MB in the end (delta: -1.8 MB). Peak memory consumption was 7.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:16:39,581 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 31.5 MB. Free memory was 8.3 MB in the beginning and 8.2 MB in the end (delta: 47.4 kB). Peak memory consumption was 47.4 kB. Max. memory is 14.3 GB. [2020-10-20 06:16:39,582 INFO L168 Benchmark]: CACSL2BoogieTranslator took 356.27 ms. Allocated memory was 40.9 MB in the beginning and 41.4 MB in the end (delta: 524.3 kB). Free memory was 18.0 MB in the beginning and 17.2 MB in the end (delta: 755.2 kB). Peak memory consumption was 9.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:16:39,583 INFO L168 Benchmark]: Boogie Preprocessor took 46.59 ms. Allocated memory is still 41.4 MB. Free memory was 17.2 MB in the beginning and 14.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:16:39,584 INFO L168 Benchmark]: RCFGBuilder took 595.57 ms. Allocated memory was 41.4 MB in the beginning and 43.5 MB in the end (delta: 2.1 MB). Free memory was 14.8 MB in the beginning and 24.4 MB in the end (delta: -9.6 MB). Peak memory consumption was 7.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:16:39,585 INFO L168 Benchmark]: TraceAbstraction took 2358.36 ms. Allocated memory was 43.5 MB in the beginning and 49.8 MB in the end (delta: 6.3 MB). Free memory was 23.9 MB in the beginning and 21.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 9.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:16:39,586 INFO L168 Benchmark]: Witness Printer took 4.94 ms. Allocated memory is still 49.8 MB. Free memory is still 20.7 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:16:39,590 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 31.5 MB. Free memory was 8.3 MB in the beginning and 8.2 MB in the end (delta: 47.4 kB). Peak memory consumption was 47.4 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 356.27 ms. Allocated memory was 40.9 MB in the beginning and 41.4 MB in the end (delta: 524.3 kB). Free memory was 18.0 MB in the beginning and 17.2 MB in the end (delta: 755.2 kB). Peak memory consumption was 9.4 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 46.59 ms. Allocated memory is still 41.4 MB. Free memory was 17.2 MB in the beginning and 14.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. * RCFGBuilder took 595.57 ms. Allocated memory was 41.4 MB in the beginning and 43.5 MB in the end (delta: 2.1 MB). Free memory was 14.8 MB in the beginning and 24.4 MB in the end (delta: -9.6 MB). Peak memory consumption was 7.8 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2358.36 ms. Allocated memory was 43.5 MB in the beginning and 49.8 MB in the end (delta: 6.3 MB). Free memory was 23.9 MB in the beginning and 21.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 9.0 MB. Max. memory is 14.3 GB. * Witness Printer took 4.94 ms. Allocated memory is still 49.8 MB. Free memory is still 20.7 MB. There was no memory consumed. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 3. Possible FailurePath: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L26] int p7 = __VERIFIER_nondet_int(); [L27] int lk7; [L29] int p8 = __VERIFIER_nondet_int(); [L30] int lk8; [L32] int p9 = __VERIFIER_nondet_int(); [L33] int lk9; [L35] int p10 = __VERIFIER_nondet_int(); [L36] int lk10; [L38] int p11 = __VERIFIER_nondet_int(); [L39] int lk11; [L41] int p12 = __VERIFIER_nondet_int(); [L42] int lk12; [L44] int p13 = __VERIFIER_nondet_int(); [L45] int lk13; [L47] int p14 = __VERIFIER_nondet_int(); [L48] int lk14; [L50] int p15 = __VERIFIER_nondet_int(); [L51] int lk15; [L54] int cond; VAL [p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L56] COND TRUE 1 [L57] cond = __VERIFIER_nondet_int() [L58] COND FALSE !(cond == 0) [L61] lk1 = 0 [L63] lk2 = 0 [L65] lk3 = 0 [L67] lk4 = 0 [L69] lk5 = 0 [L71] lk6 = 0 [L73] lk7 = 0 [L75] lk8 = 0 [L77] lk9 = 0 [L79] lk10 = 0 [L81] lk11 = 0 [L83] lk12 = 0 [L85] lk13 = 0 [L87] lk14 = 0 [L89] lk15 = 0 VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=0, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L93] COND FALSE !(p1 != 0) VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=0, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L97] COND FALSE !(p2 != 0) VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=0, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L101] COND TRUE p3 != 0 [L102] lk3 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=0, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L105] COND TRUE p4 != 0 [L106] lk4 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=0, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L109] COND TRUE p5 != 0 [L110] lk5 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=0, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L113] COND TRUE p6 != 0 [L114] lk6 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=0, lk8=0, lk9=0, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L117] COND TRUE p7 != 0 [L118] lk7 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=0, lk9=0, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L121] COND TRUE p8 != 0 [L122] lk8 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=0, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L125] COND TRUE p9 != 0 [L126] lk9 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L129] COND FALSE !(p10 != 0) VAL [cond=2147483648, lk1=0, lk10=0, lk11=0, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L133] COND TRUE p11 != 0 [L134] lk11 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=1, lk12=0, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L137] COND TRUE p12 != 0 [L138] lk12 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=1, lk12=1, lk13=0, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L141] COND TRUE p13 != 0 [L142] lk13 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=0, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L145] COND TRUE p14 != 0 [L146] lk14 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=1, lk15=0, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L149] COND TRUE p15 != 0 [L150] lk15 = 1 VAL [cond=2147483648, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=1, lk15=1, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L155] COND FALSE !(p1 != 0) VAL [cond=2147483648, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=1, lk15=1, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L160] COND FALSE !(p2 != 0) VAL [cond=2147483648, lk1=0, lk10=0, lk11=1, lk12=1, lk13=1, lk14=1, lk15=1, lk2=0, lk3=1, lk4=1, lk5=1, lk6=1, lk7=1, lk8=1, lk9=1, p1=0, p10=0, p11=2147483648, p12=2147483648, p13=2147483648, p14=2147483648, p15=2147483648, p2=0, p3=2147745792, p4=2147483648, p5=2147483648, p6=2147483648, p7=2147483648, p8=2147483648, p9=2147483648] [L233] CALL reach_error() [L3] __assert_fail("0", "test_locks_15-1.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 65 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.2s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 491 SDtfs, 220 SDslu, 282 SDs, 0 SdLazy, 16 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 176 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=4, 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, 4 MinimizatonAttempts, 33 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 172 ConstructedInterpolants, 0 QuantifiedInterpolants, 9748 SizeOfPredicates, 0 NumberOfNonLiveVariables, 403 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...