./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 54858612 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_1.5.800.v20200727-1323.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_1.5.800.v20200727-1323.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 0.2.0-5485861 [2020-10-26 03:55:35,476 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 03:55:35,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 03:55:35,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 03:55:35,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 03:55:35,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 03:55:35,543 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 03:55:35,546 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 03:55:35,549 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 03:55:35,550 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 03:55:35,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 03:55:35,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 03:55:35,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 03:55:35,556 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 03:55:35,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 03:55:35,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 03:55:35,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 03:55:35,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 03:55:35,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 03:55:35,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 03:55:35,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 03:55:35,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 03:55:35,572 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 03:55:35,573 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 03:55:35,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 03:55:35,577 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 03:55:35,577 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 03:55:35,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 03:55:35,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 03:55:35,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 03:55:35,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 03:55:35,582 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 03:55:35,583 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 03:55:35,584 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 03:55:35,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 03:55:35,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 03:55:35,588 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 03:55:35,588 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 03:55:35,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 03:55:35,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 03:55:35,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 03:55:35,592 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-26 03:55:35,626 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 03:55:35,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 03:55:35,642 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 03:55:35,643 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 03:55:35,643 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 03:55:35,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 03:55:35,643 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 03:55:35,644 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 03:55:35,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 03:55:35,644 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 03:55:35,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 03:55:35,645 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-26 03:55:35,645 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-26 03:55:35,645 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-26 03:55:35,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 03:55:35,646 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-26 03:55:35,646 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 03:55:35,646 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 03:55:35,646 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 03:55:35,647 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 03:55:35,647 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 03:55:35,647 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 03:55:35,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 03:55:35,648 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 03:55:35,648 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 03:55:35,648 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 03:55:35,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 03:55:35,649 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 03:55:35,649 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04dfa849b43716e8587b0fc4953cadbe3968c4e3 [2020-10-26 03:55:36,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 03:55:36,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 03:55:36,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 03:55:36,089 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 03:55:36,090 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 03:55:36,092 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_15-1.c [2020-10-26 03:55:36,186 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ab921290/77d530e33ec54ff293f0b78c99ec8bd1/FLAG1b40d9613 [2020-10-26 03:55:36,854 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 03:55:36,855 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_15-1.c [2020-10-26 03:55:36,871 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ab921290/77d530e33ec54ff293f0b78c99ec8bd1/FLAG1b40d9613 [2020-10-26 03:55:37,213 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ab921290/77d530e33ec54ff293f0b78c99ec8bd1 [2020-10-26 03:55:37,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 03:55:37,228 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-26 03:55:37,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 03:55:37,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 03:55:37,235 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 03:55:37,236 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:55:37" (1/1) ... [2020-10-26 03:55:37,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ae5efd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:37, skipping insertion in model container [2020-10-26 03:55:37,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:55:37" (1/1) ... [2020-10-26 03:55:37,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 03:55:37,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 03:55:37,601 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:55:37,613 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 03:55:37,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:55:37,670 INFO L208 MainTranslator]: Completed translation [2020-10-26 03:55:37,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:37 WrapperNode [2020-10-26 03:55:37,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 03:55:37,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 03:55:37,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 03:55:37,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 03:55:37,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:37" (1/1) ... [2020-10-26 03:55:37,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:37" (1/1) ... [2020-10-26 03:55:37,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:37" (1/1) ... [2020-10-26 03:55:37,720 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:37" (1/1) ... [2020-10-26 03:55:37,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:37" (1/1) ... [2020-10-26 03:55:37,762 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:37" (1/1) ... [2020-10-26 03:55:37,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:37" (1/1) ... [2020-10-26 03:55:37,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 03:55:37,787 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 03:55:37,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 03:55:37,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 03:55:37,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:37" (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 [2020-10-26 03:55:37,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 03:55:37,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 03:55:37,884 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 03:55:37,884 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 03:55:37,885 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 03:55:37,885 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 03:55:37,887 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 03:55:37,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 03:55:37,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 03:55:37,888 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 03:55:37,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 03:55:37,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 03:55:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 03:55:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 03:55:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 03:55:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 03:55:38,683 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 03:55:38,683 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 03:55:38,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:55:38 BoogieIcfgContainer [2020-10-26 03:55:38,685 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 03:55:38,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 03:55:38,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 03:55:38,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 03:55:38,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 03:55:37" (1/3) ... [2020-10-26 03:55:38,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d02c39f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:55:38, skipping insertion in model container [2020-10-26 03:55:38,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:37" (2/3) ... [2020-10-26 03:55:38,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d02c39f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:55:38, skipping insertion in model container [2020-10-26 03:55:38,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:55:38" (3/3) ... [2020-10-26 03:55:38,701 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_15-1.c [2020-10-26 03:55:38,714 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 03:55:38,720 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-26 03:55:38,734 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-26 03:55:38,758 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 03:55:38,758 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-26 03:55:38,758 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 03:55:38,759 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 03:55:38,759 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 03:55:38,759 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 03:55:38,759 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 03:55:38,759 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 03:55:38,777 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-10-26 03:55:38,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-26 03:55:38,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:38,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:38,787 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:38,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:38,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1650782030, now seen corresponding path program 1 times [2020-10-26 03:55:38,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:38,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945631753] [2020-10-26 03:55:38,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:39,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:39,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:39,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945631753] [2020-10-26 03:55:39,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:39,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 03:55:39,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795045877] [2020-10-26 03:55:39,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 03:55:39,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:39,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 03:55:39,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 03:55:39,170 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2020-10-26 03:55:39,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:39,237 INFO L93 Difference]: Finished difference Result 61 states and 105 transitions. [2020-10-26 03:55:39,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 03:55:39,239 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-26 03:55:39,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:39,251 INFO L225 Difference]: With dead ends: 61 [2020-10-26 03:55:39,251 INFO L226 Difference]: Without dead ends: 56 [2020-10-26 03:55:39,253 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 [2020-10-26 03:55:39,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-26 03:55:39,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-26 03:55:39,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-26 03:55:39,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 100 transitions. [2020-10-26 03:55:39,299 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 100 transitions. Word has length 9 [2020-10-26 03:55:39,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:39,299 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 100 transitions. [2020-10-26 03:55:39,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 03:55:39,300 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 100 transitions. [2020-10-26 03:55:39,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-26 03:55:39,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:39,301 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] [2020-10-26 03:55:39,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 03:55:39,302 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:39,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:39,303 INFO L82 PathProgramCache]: Analyzing trace with hash 868347282, now seen corresponding path program 1 times [2020-10-26 03:55:39,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:39,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645689643] [2020-10-26 03:55:39,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:39,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:39,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:39,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:39,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:39,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645689643] [2020-10-26 03:55:39,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:39,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:55:39,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755149504] [2020-10-26 03:55:39,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:55:39,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:39,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:55:39,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:55:39,521 INFO L87 Difference]: Start difference. First operand 56 states and 100 transitions. Second operand 4 states. [2020-10-26 03:55:39,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:39,937 INFO L93 Difference]: Finished difference Result 103 states and 190 transitions. [2020-10-26 03:55:39,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:55:39,938 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-26 03:55:39,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:39,941 INFO L225 Difference]: With dead ends: 103 [2020-10-26 03:55:39,942 INFO L226 Difference]: Without dead ends: 103 [2020-10-26 03:55:39,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:55:39,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-26 03:55:39,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 72. [2020-10-26 03:55:39,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-26 03:55:39,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 131 transitions. [2020-10-26 03:55:39,956 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 131 transitions. Word has length 27 [2020-10-26 03:55:39,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:39,956 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 131 transitions. [2020-10-26 03:55:39,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:55:39,957 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 131 transitions. [2020-10-26 03:55:39,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-26 03:55:39,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:39,958 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] [2020-10-26 03:55:39,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 03:55:39,959 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:39,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:39,960 INFO L82 PathProgramCache]: Analyzing trace with hash 868570234, now seen corresponding path program 1 times [2020-10-26 03:55:39,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:39,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248661248] [2020-10-26 03:55:39,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:40,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:40,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:40,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:40,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248661248] [2020-10-26 03:55:40,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:40,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:55:40,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51117135] [2020-10-26 03:55:40,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:55:40,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:40,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:55:40,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:55:40,096 INFO L87 Difference]: Start difference. First operand 72 states and 131 transitions. Second operand 4 states. [2020-10-26 03:55:40,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:40,616 INFO L93 Difference]: Finished difference Result 104 states and 190 transitions. [2020-10-26 03:55:40,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:55:40,618 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-26 03:55:40,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:40,620 INFO L225 Difference]: With dead ends: 104 [2020-10-26 03:55:40,621 INFO L226 Difference]: Without dead ends: 104 [2020-10-26 03:55:40,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:55:40,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-26 03:55:40,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-26 03:55:40,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-26 03:55:40,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 189 transitions. [2020-10-26 03:55:40,638 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 189 transitions. Word has length 27 [2020-10-26 03:55:40,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:40,641 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 189 transitions. [2020-10-26 03:55:40,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:55:40,641 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 189 transitions. [2020-10-26 03:55:40,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-26 03:55:40,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:40,643 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] [2020-10-26 03:55:40,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 03:55:40,643 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:40,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:40,643 INFO L82 PathProgramCache]: Analyzing trace with hash -820596460, now seen corresponding path program 1 times [2020-10-26 03:55:40,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:40,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956630480] [2020-10-26 03:55:40,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:40,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:40,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:55:40,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:40,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:40,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956630480] [2020-10-26 03:55:40,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:40,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:55:40,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403340333] [2020-10-26 03:55:40,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:55:40,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:55:40,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:55:40,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:55:40,830 INFO L87 Difference]: Start difference. First operand 103 states and 189 transitions. Second operand 4 states. [2020-10-26 03:55:41,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:41,086 INFO L93 Difference]: Finished difference Result 106 states and 190 transitions. [2020-10-26 03:55:41,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:55:41,087 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-26 03:55:41,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:41,089 INFO L225 Difference]: With dead ends: 106 [2020-10-26 03:55:41,089 INFO L226 Difference]: Without dead ends: 106 [2020-10-26 03:55:41,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:55:41,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-26 03:55:41,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-26 03:55:41,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-26 03:55:41,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 189 transitions. [2020-10-26 03:55:41,101 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 189 transitions. Word has length 27 [2020-10-26 03:55:41,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:41,101 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 189 transitions. [2020-10-26 03:55:41,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:55:41,102 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 189 transitions. [2020-10-26 03:55:41,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-26 03:55:41,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:41,103 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] [2020-10-26 03:55:41,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 03:55:41,104 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:41,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:41,104 INFO L82 PathProgramCache]: Analyzing trace with hash -820373508, now seen corresponding path program 1 times [2020-10-26 03:55:41,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:55:41,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367209857] [2020-10-26 03:55:41,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:55:41,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 03:55:41,163 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 03:55:41,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 03:55:41,208 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 03:55:41,256 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 03:55:41,256 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 03:55:41,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 03:55:41,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 03:55:41 BoogieIcfgContainer [2020-10-26 03:55:41,352 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 03:55:41,353 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 03:55:41,353 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 03:55:41,353 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 03:55:41,354 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:55:38" (3/4) ... [2020-10-26 03:55:41,358 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-26 03:55:41,358 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 03:55:41,362 INFO L168 Benchmark]: Toolchain (without parser) took 4137.58 ms. Allocated memory was 37.7 MB in the beginning and 69.2 MB in the end (delta: 31.5 MB). Free memory was 14.8 MB in the beginning and 42.7 MB in the end (delta: -27.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.1 GB. [2020-10-26 03:55:41,363 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 37.7 MB. Free memory is still 24.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:55:41,367 INFO L168 Benchmark]: CACSL2BoogieTranslator took 441.53 ms. Allocated memory was 37.7 MB in the beginning and 46.1 MB in the end (delta: 8.4 MB). Free memory was 14.2 MB in the beginning and 20.9 MB in the end (delta: -6.8 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-10-26 03:55:41,368 INFO L168 Benchmark]: Boogie Preprocessor took 106.50 ms. Allocated memory is still 46.1 MB. Free memory was 20.9 MB in the beginning and 19.1 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:55:41,370 INFO L168 Benchmark]: RCFGBuilder took 898.88 ms. Allocated memory is still 46.1 MB. Free memory was 30.7 MB in the beginning and 17.3 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2020-10-26 03:55:41,377 INFO L168 Benchmark]: TraceAbstraction took 2658.74 ms. Allocated memory was 46.1 MB in the beginning and 69.2 MB in the end (delta: 23.1 MB). Free memory was 29.1 MB in the beginning and 43.0 MB in the end (delta: -13.9 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-10-26 03:55:41,379 INFO L168 Benchmark]: Witness Printer took 5.77 ms. Allocated memory is still 69.2 MB. Free memory was 43.0 MB in the beginning and 42.7 MB in the end (delta: 281.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 03:55:41,385 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 ms. Allocated memory is still 37.7 MB. Free memory is still 24.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 441.53 ms. Allocated memory was 37.7 MB in the beginning and 46.1 MB in the end (delta: 8.4 MB). Free memory was 14.2 MB in the beginning and 20.9 MB in the end (delta: -6.8 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 106.50 ms. Allocated memory is still 46.1 MB. Free memory was 20.9 MB in the beginning and 19.1 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 898.88 ms. Allocated memory is still 46.1 MB. Free memory was 30.7 MB in the beginning and 17.3 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2658.74 ms. Allocated memory was 46.1 MB in the beginning and 69.2 MB in the end (delta: 23.1 MB). Free memory was 29.1 MB in the beginning and 43.0 MB in the end (delta: -13.9 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Witness Printer took 5.77 ms. Allocated memory is still 69.2 MB. Free memory was 43.0 MB in the beginning and 42.7 MB in the end (delta: 281.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 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: 2.5s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 1.3s, 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, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s 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, 0.2s SatisfiabilityAnalysisTime, 0.5s 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 0.2.0-5485861 [2020-10-26 03:55:44,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 03:55:44,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 03:55:44,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 03:55:44,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 03:55:44,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 03:55:44,066 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 03:55:44,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 03:55:44,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 03:55:44,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 03:55:44,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 03:55:44,088 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 03:55:44,088 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 03:55:44,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 03:55:44,093 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 03:55:44,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 03:55:44,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 03:55:44,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 03:55:44,103 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 03:55:44,109 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 03:55:44,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 03:55:44,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 03:55:44,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 03:55:44,115 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 03:55:44,118 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 03:55:44,118 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 03:55:44,119 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 03:55:44,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 03:55:44,120 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 03:55:44,121 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 03:55:44,122 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 03:55:44,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 03:55:44,123 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 03:55:44,124 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 03:55:44,125 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 03:55:44,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 03:55:44,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 03:55:44,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 03:55:44,127 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 03:55:44,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 03:55:44,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 03:55:44,138 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-10-26 03:55:44,168 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 03:55:44,168 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 03:55:44,170 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 03:55:44,170 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 03:55:44,171 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 03:55:44,171 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 03:55:44,172 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 03:55:44,172 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 03:55:44,172 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 03:55:44,172 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 03:55:44,173 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 03:55:44,174 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-26 03:55:44,174 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-26 03:55:44,174 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-26 03:55:44,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 03:55:44,174 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-26 03:55:44,175 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-26 03:55:44,175 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-26 03:55:44,175 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 03:55:44,175 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 03:55:44,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 03:55:44,176 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 03:55:44,176 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 03:55:44,176 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 03:55:44,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 03:55:44,177 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 03:55:44,177 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 03:55:44,177 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-26 03:55:44,178 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-26 03:55:44,178 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 03:55:44,178 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-26 03:55:44,178 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04dfa849b43716e8587b0fc4953cadbe3968c4e3 [2020-10-26 03:55:44,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 03:55:44,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 03:55:44,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 03:55:44,667 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 03:55:44,668 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 03:55:44,669 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_15-1.c [2020-10-26 03:55:44,764 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b95506d8d/b0987f34aaa44411a6f4b36bc1bd09cc/FLAGf26a90102 [2020-10-26 03:55:45,333 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 03:55:45,334 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_15-1.c [2020-10-26 03:55:45,346 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b95506d8d/b0987f34aaa44411a6f4b36bc1bd09cc/FLAGf26a90102 [2020-10-26 03:55:45,718 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b95506d8d/b0987f34aaa44411a6f4b36bc1bd09cc [2020-10-26 03:55:45,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 03:55:45,733 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-26 03:55:45,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 03:55:45,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 03:55:45,757 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 03:55:45,758 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:55:45" (1/1) ... [2020-10-26 03:55:45,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@418a64e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:45, skipping insertion in model container [2020-10-26 03:55:45,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:55:45" (1/1) ... [2020-10-26 03:55:45,779 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 03:55:45,828 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 03:55:46,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:55:46,121 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 03:55:46,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:55:46,215 INFO L208 MainTranslator]: Completed translation [2020-10-26 03:55:46,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:46 WrapperNode [2020-10-26 03:55:46,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 03:55:46,217 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 03:55:46,217 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 03:55:46,218 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 03:55:46,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:46" (1/1) ... [2020-10-26 03:55:46,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:46" (1/1) ... [2020-10-26 03:55:46,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:46" (1/1) ... [2020-10-26 03:55:46,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:46" (1/1) ... [2020-10-26 03:55:46,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:46" (1/1) ... [2020-10-26 03:55:46,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:46" (1/1) ... [2020-10-26 03:55:46,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:46" (1/1) ... [2020-10-26 03:55:46,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 03:55:46,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 03:55:46,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 03:55:46,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 03:55:46,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:46" (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 [2020-10-26 03:55:46,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 03:55:46,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 03:55:46,367 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 03:55:46,367 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 03:55:46,367 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 03:55:46,367 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 03:55:46,367 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 03:55:46,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 03:55:46,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 03:55:46,368 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 03:55:46,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 03:55:46,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-26 03:55:46,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 03:55:46,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-10-26 03:55:46,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-10-26 03:55:46,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 03:55:47,102 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 03:55:47,103 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 03:55:47,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:55:47 BoogieIcfgContainer [2020-10-26 03:55:47,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 03:55:47,107 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 03:55:47,107 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 03:55:47,111 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 03:55:47,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 03:55:45" (1/3) ... [2020-10-26 03:55:47,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437c3a8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:55:47, skipping insertion in model container [2020-10-26 03:55:47,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:55:46" (2/3) ... [2020-10-26 03:55:47,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437c3a8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:55:47, skipping insertion in model container [2020-10-26 03:55:47,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:55:47" (3/3) ... [2020-10-26 03:55:47,116 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_15-1.c [2020-10-26 03:55:47,127 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 03:55:47,132 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-26 03:55:47,146 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-26 03:55:47,172 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 03:55:47,172 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-26 03:55:47,172 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 03:55:47,172 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 03:55:47,172 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 03:55:47,173 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 03:55:47,173 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 03:55:47,173 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 03:55:47,189 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-10-26 03:55:47,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-26 03:55:47,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:47,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:55:47,200 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:47,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:47,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1650782030, now seen corresponding path program 1 times [2020-10-26 03:55:47,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-26 03:55:47,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1640470036] [2020-10-26 03:55:47,221 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 [2020-10-26 03:55:47,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:47,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-26 03:55:47,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:55:47,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:47,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-26 03:55:47,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:47,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1640470036] [2020-10-26 03:55:47,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:47,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-26 03:55:47,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259202257] [2020-10-26 03:55:47,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-26 03:55:47,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-26 03:55:47,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-26 03:55:47,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-26 03:55:47,455 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 2 states. [2020-10-26 03:55:47,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:47,478 INFO L93 Difference]: Finished difference Result 61 states and 105 transitions. [2020-10-26 03:55:47,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-26 03:55:47,480 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-26 03:55:47,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:47,491 INFO L225 Difference]: With dead ends: 61 [2020-10-26 03:55:47,491 INFO L226 Difference]: Without dead ends: 56 [2020-10-26 03:55:47,493 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 [2020-10-26 03:55:47,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-26 03:55:47,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-26 03:55:47,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-26 03:55:47,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 100 transitions. [2020-10-26 03:55:47,541 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 100 transitions. Word has length 9 [2020-10-26 03:55:47,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:47,542 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 100 transitions. [2020-10-26 03:55:47,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-26 03:55:47,542 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 100 transitions. [2020-10-26 03:55:47,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-26 03:55:47,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:47,543 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] [2020-10-26 03:55:47,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-26 03:55:47,757 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:47,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:47,759 INFO L82 PathProgramCache]: Analyzing trace with hash 868347282, now seen corresponding path program 1 times [2020-10-26 03:55:47,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-26 03:55:47,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [289063267] [2020-10-26 03:55:47,760 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 [2020-10-26 03:55:47,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:47,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 03:55:47,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:55:47,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:47,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-26 03:55:47,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:47,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [289063267] [2020-10-26 03:55:47,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:47,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-26 03:55:47,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612437897] [2020-10-26 03:55:47,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 03:55:47,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-26 03:55:48,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 03:55:48,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 03:55:48,000 INFO L87 Difference]: Start difference. First operand 56 states and 100 transitions. Second operand 3 states. [2020-10-26 03:55:48,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:48,044 INFO L93 Difference]: Finished difference Result 103 states and 190 transitions. [2020-10-26 03:55:48,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 03:55:48,045 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-26 03:55:48,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:48,049 INFO L225 Difference]: With dead ends: 103 [2020-10-26 03:55:48,049 INFO L226 Difference]: Without dead ends: 103 [2020-10-26 03:55:48,050 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 [2020-10-26 03:55:48,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-26 03:55:48,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 72. [2020-10-26 03:55:48,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-26 03:55:48,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 131 transitions. [2020-10-26 03:55:48,064 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 131 transitions. Word has length 27 [2020-10-26 03:55:48,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:48,064 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 131 transitions. [2020-10-26 03:55:48,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 03:55:48,065 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 131 transitions. [2020-10-26 03:55:48,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-26 03:55:48,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:48,066 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] [2020-10-26 03:55:48,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-26 03:55:48,277 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:48,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:48,281 INFO L82 PathProgramCache]: Analyzing trace with hash 868570234, now seen corresponding path program 1 times [2020-10-26 03:55:48,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-26 03:55:48,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1394228222] [2020-10-26 03:55:48,282 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 [2020-10-26 03:55:48,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:48,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 03:55:48,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:55:48,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:48,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-26 03:55:48,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:48,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1394228222] [2020-10-26 03:55:48,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:48,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-26 03:55:48,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043301153] [2020-10-26 03:55:48,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 03:55:48,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-26 03:55:48,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 03:55:48,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 03:55:48,606 INFO L87 Difference]: Start difference. First operand 72 states and 131 transitions. Second operand 3 states. [2020-10-26 03:55:48,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:48,636 INFO L93 Difference]: Finished difference Result 104 states and 190 transitions. [2020-10-26 03:55:48,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 03:55:48,638 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-26 03:55:48,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:48,640 INFO L225 Difference]: With dead ends: 104 [2020-10-26 03:55:48,640 INFO L226 Difference]: Without dead ends: 104 [2020-10-26 03:55:48,640 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 [2020-10-26 03:55:48,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-26 03:55:48,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-26 03:55:48,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-26 03:55:48,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 189 transitions. [2020-10-26 03:55:48,659 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 189 transitions. Word has length 27 [2020-10-26 03:55:48,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:48,660 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 189 transitions. [2020-10-26 03:55:48,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 03:55:48,660 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 189 transitions. [2020-10-26 03:55:48,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-26 03:55:48,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:48,662 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] [2020-10-26 03:55:48,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-26 03:55:48,878 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:48,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:48,880 INFO L82 PathProgramCache]: Analyzing trace with hash -820596460, now seen corresponding path program 1 times [2020-10-26 03:55:48,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-26 03:55:48,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [31543209] [2020-10-26 03:55:48,882 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 [2020-10-26 03:55:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:55:48,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 03:55:49,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:55:49,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:49,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-26 03:55:49,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:55:49,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [31543209] [2020-10-26 03:55:49,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:55:49,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-26 03:55:49,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403277837] [2020-10-26 03:55:49,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 03:55:49,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-26 03:55:49,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 03:55:49,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 03:55:49,047 INFO L87 Difference]: Start difference. First operand 103 states and 189 transitions. Second operand 3 states. [2020-10-26 03:55:49,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:55:49,088 INFO L93 Difference]: Finished difference Result 106 states and 190 transitions. [2020-10-26 03:55:49,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 03:55:49,089 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-26 03:55:49,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:55:49,093 INFO L225 Difference]: With dead ends: 106 [2020-10-26 03:55:49,094 INFO L226 Difference]: Without dead ends: 106 [2020-10-26 03:55:49,094 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 [2020-10-26 03:55:49,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-26 03:55:49,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-26 03:55:49,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-26 03:55:49,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 189 transitions. [2020-10-26 03:55:49,113 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 189 transitions. Word has length 27 [2020-10-26 03:55:49,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:55:49,114 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 189 transitions. [2020-10-26 03:55:49,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 03:55:49,114 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 189 transitions. [2020-10-26 03:55:49,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-26 03:55:49,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:55:49,115 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] [2020-10-26 03:55:49,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-26 03:55:49,330 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:55:49,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:55:49,331 INFO L82 PathProgramCache]: Analyzing trace with hash -820373508, now seen corresponding path program 1 times [2020-10-26 03:55:49,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-26 03:55:49,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993899535] [2020-10-26 03:55:49,333 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 [2020-10-26 03:55:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 03:55:49,465 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 03:55:49,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 03:55:49,532 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 03:55:49,617 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-26 03:55:49,617 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 03:55:49,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-26 03:55:49,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 03:55:49 BoogieIcfgContainer [2020-10-26 03:55:49,904 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 03:55:49,904 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 03:55:49,904 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 03:55:49,905 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 03:55:49,905 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:55:47" (3/4) ... [2020-10-26 03:55:49,908 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-26 03:55:49,908 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 03:55:49,911 INFO L168 Benchmark]: Toolchain (without parser) took 4182.34 ms. Allocated memory was 41.9 MB in the beginning and 69.2 MB in the end (delta: 27.3 MB). Free memory was 18.9 MB in the beginning and 30.7 MB in the end (delta: -11.9 MB). Peak memory consumption was 17.4 MB. Max. memory is 16.1 GB. [2020-10-26 03:55:49,912 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 41.9 MB. Free memory was 25.4 MB in the beginning and 25.4 MB in the end (delta: 35.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:55:49,913 INFO L168 Benchmark]: CACSL2BoogieTranslator took 481.76 ms. Allocated memory was 41.9 MB in the beginning and 56.6 MB in the end (delta: 14.7 MB). Free memory was 18.2 MB in the beginning and 30.7 MB in the end (delta: -12.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-10-26 03:55:49,913 INFO L168 Benchmark]: Boogie Preprocessor took 58.47 ms. Allocated memory is still 56.6 MB. Free memory was 30.7 MB in the beginning and 28.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 03:55:49,914 INFO L168 Benchmark]: RCFGBuilder took 828.68 ms. Allocated memory is still 56.6 MB. Free memory was 28.7 MB in the beginning and 36.9 MB in the end (delta: -8.1 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. [2020-10-26 03:55:49,915 INFO L168 Benchmark]: TraceAbstraction took 2797.04 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 36.3 MB in the beginning and 30.7 MB in the end (delta: 5.6 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. [2020-10-26 03:55:49,916 INFO L168 Benchmark]: Witness Printer took 4.16 ms. Allocated memory is still 69.2 MB. Free memory is still 30.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:55:49,920 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 41.9 MB. Free memory was 25.4 MB in the beginning and 25.4 MB in the end (delta: 35.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 481.76 ms. Allocated memory was 41.9 MB in the beginning and 56.6 MB in the end (delta: 14.7 MB). Free memory was 18.2 MB in the beginning and 30.7 MB in the end (delta: -12.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.47 ms. Allocated memory is still 56.6 MB. Free memory was 30.7 MB in the beginning and 28.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 828.68 ms. Allocated memory is still 56.6 MB. Free memory was 28.7 MB in the beginning and 36.9 MB in the end (delta: -8.1 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2797.04 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 36.3 MB in the beginning and 30.7 MB in the end (delta: 5.6 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. * Witness Printer took 4.16 ms. Allocated memory is still 69.2 MB. Free memory is still 30.7 MB. There was no memory consumed. Max. memory is 16.1 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: 2.6s, 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, 0.3s SatisfiabilityAnalysisTime, 0.2s 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...