./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/locks/test_locks_14-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_aa04434d-c3e7-42af-9433-3214593ffc63/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_aa04434d-c3e7-42af-9433-3214593ffc63/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_aa04434d-c3e7-42af-9433-3214593ffc63/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_aa04434d-c3e7-42af-9433-3214593ffc63/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_14-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_aa04434d-c3e7-42af-9433-3214593ffc63/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_aa04434d-c3e7-42af-9433-3214593ffc63/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7dd19b8066311da8c1eb1c6a0e6567bb02c0b787 ................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_aa04434d-c3e7-42af-9433-3214593ffc63/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_aa04434d-c3e7-42af-9433-3214593ffc63/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_aa04434d-c3e7-42af-9433-3214593ffc63/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_aa04434d-c3e7-42af-9433-3214593ffc63/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_14-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_aa04434d-c3e7-42af-9433-3214593ffc63/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_aa04434d-c3e7-42af-9433-3214593ffc63/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7dd19b8066311da8c1eb1c6a0e6567bb02c0b787 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:06:59,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:06:59,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:06:59,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:06:59,615 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:06:59,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:06:59,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:06:59,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:06:59,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:06:59,634 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:06:59,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:06:59,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:06:59,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:06:59,641 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:06:59,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:06:59,644 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:06:59,645 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:06:59,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:06:59,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:06:59,659 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:06:59,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:06:59,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:06:59,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:06:59,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:06:59,674 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:06:59,674 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:06:59,674 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:06:59,676 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:06:59,677 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:06:59,678 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:06:59,678 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:06:59,679 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:06:59,681 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:06:59,682 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:06:59,683 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:06:59,683 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:06:59,684 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:06:59,684 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:06:59,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:06:59,685 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:06:59,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:06:59,689 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_aa04434d-c3e7-42af-9433-3214593ffc63/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-11-22 13:06:59,726 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:06:59,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:06:59,728 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:06:59,728 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:06:59,728 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:06:59,728 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:06:59,729 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:06:59,729 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:06:59,729 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:06:59,729 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:06:59,730 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:06:59,731 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:06:59,731 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:06:59,731 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:06:59,731 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:06:59,732 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-22 13:06:59,732 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-22 13:06:59,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:06:59,733 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:06:59,733 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 13:06:59,733 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:06:59,733 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:06:59,734 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:06:59,734 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-22 13:06:59,734 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-22 13:06:59,734 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-22 13:06:59,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:06:59,736 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:06:59,736 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:06:59,736 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:06:59,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:06:59,737 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:06:59,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:06:59,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:06:59,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:06:59,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:06:59,738 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:06:59,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:06:59,739 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:06:59,739 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:06:59,739 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_aa04434d-c3e7-42af-9433-3214593ffc63/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_aa04434d-c3e7-42af-9433-3214593ffc63/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7dd19b8066311da8c1eb1c6a0e6567bb02c0b787 [2020-11-22 13:06:59,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:07:00,022 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:07:00,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:07:00,025 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:07:00,028 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:07:00,029 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_aa04434d-c3e7-42af-9433-3214593ffc63/bin/utaipan/../../sv-benchmarks/c/locks/test_locks_14-2.c [2020-11-22 13:07:00,110 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_aa04434d-c3e7-42af-9433-3214593ffc63/bin/utaipan/data/e225f9f57/badb77a739c4442681c0659783905c47/FLAGf86d4eb62 [2020-11-22 13:07:00,662 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:07:00,666 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_aa04434d-c3e7-42af-9433-3214593ffc63/sv-benchmarks/c/locks/test_locks_14-2.c [2020-11-22 13:07:00,682 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_aa04434d-c3e7-42af-9433-3214593ffc63/bin/utaipan/data/e225f9f57/badb77a739c4442681c0659783905c47/FLAGf86d4eb62 [2020-11-22 13:07:01,015 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_aa04434d-c3e7-42af-9433-3214593ffc63/bin/utaipan/data/e225f9f57/badb77a739c4442681c0659783905c47 [2020-11-22 13:07:01,018 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:07:01,019 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:07:01,021 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:07:01,021 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:07:01,024 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:07:01,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:07:01" (1/1) ... [2020-11-22 13:07:01,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77342b9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:01, skipping insertion in model container [2020-11-22 13:07:01,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:07:01" (1/1) ... [2020-11-22 13:07:01,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:07:01,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:07:01,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:07:01,279 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:07:01,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:07:01,322 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:07:01,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:01 WrapperNode [2020-11-22 13:07:01,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:07:01,323 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:07:01,324 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:07:01,324 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:07:01,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:01" (1/1) ... [2020-11-22 13:07:01,338 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:01" (1/1) ... [2020-11-22 13:07:01,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:07:01,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:07:01,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:07:01,361 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:07:01,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:01" (1/1) ... [2020-11-22 13:07:01,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:01" (1/1) ... [2020-11-22 13:07:01,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:01" (1/1) ... [2020-11-22 13:07:01,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:01" (1/1) ... [2020-11-22 13:07:01,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:01" (1/1) ... [2020-11-22 13:07:01,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:01" (1/1) ... [2020-11-22 13:07:01,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:01" (1/1) ... [2020-11-22 13:07:01,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:07:01,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:07:01,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:07:01,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:07:01,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aa04434d-c3e7-42af-9433-3214593ffc63/bin/utaipan/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 [2020-11-22 13:07:01,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:07:01,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:07:01,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:07:01,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:07:02,556 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:07:02,556 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-22 13:07:02,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:07:02 BoogieIcfgContainer [2020-11-22 13:07:02,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:07:02,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:07:02,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:07:02,564 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:07:02,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:07:01" (1/3) ... [2020-11-22 13:07:02,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd0b1f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:07:02, skipping insertion in model container [2020-11-22 13:07:02,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:01" (2/3) ... [2020-11-22 13:07:02,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd0b1f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:07:02, skipping insertion in model container [2020-11-22 13:07:02,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:07:02" (3/3) ... [2020-11-22 13:07:02,567 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_14-2.c [2020-11-22 13:07:02,578 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:07:02,582 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-22 13:07:02,594 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-22 13:07:02,614 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:07:02,614 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-22 13:07:02,614 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:07:02,614 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:07:02,615 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:07:02,615 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:07:02,615 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:07:02,615 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:07:02,627 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-11-22 13:07:02,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-22 13:07:02,632 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:02,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-22 13:07:02,633 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:07:02,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:02,641 INFO L82 PathProgramCache]: Analyzing trace with hash 9181008, now seen corresponding path program 1 times [2020-11-22 13:07:02,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:02,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455134704] [2020-11-22 13:07:02,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:02,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:02,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:02,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455134704] [2020-11-22 13:07:02,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:02,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:07:02,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553614312] [2020-11-22 13:07:02,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:07:02,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:02,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:07:02,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:07:02,795 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2020-11-22 13:07:02,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:02,808 INFO L93 Difference]: Finished difference Result 37 states and 64 transitions. [2020-11-22 13:07:02,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:07:02,809 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-11-22 13:07:02,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:02,818 INFO L225 Difference]: With dead ends: 37 [2020-11-22 13:07:02,818 INFO L226 Difference]: Without dead ends: 36 [2020-11-22 13:07:02,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:07:02,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-22 13:07:02,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-22 13:07:02,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-22 13:07:02,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 63 transitions. [2020-11-22 13:07:02,852 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 63 transitions. Word has length 4 [2020-11-22 13:07:02,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:02,853 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 63 transitions. [2020-11-22 13:07:02,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:07:02,853 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 63 transitions. [2020-11-22 13:07:02,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 13:07:02,854 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:02,854 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 13:07:02,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:07:02,854 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:07:02,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:02,855 INFO L82 PathProgramCache]: Analyzing trace with hash 276482197, now seen corresponding path program 1 times [2020-11-22 13:07:02,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:02,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334554630] [2020-11-22 13:07:02,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:02,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:02,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:02,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334554630] [2020-11-22 13:07:02,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:02,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-22 13:07:02,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453077266] [2020-11-22 13:07:02,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:07:02,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:02,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:07:02,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:07:02,946 INFO L87 Difference]: Start difference. First operand 36 states and 63 transitions. Second operand 3 states. [2020-11-22 13:07:02,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:02,957 INFO L93 Difference]: Finished difference Result 35 states and 62 transitions. [2020-11-22 13:07:02,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:07:02,958 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-22 13:07:02,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:02,962 INFO L225 Difference]: With dead ends: 35 [2020-11-22 13:07:02,962 INFO L226 Difference]: Without dead ends: 33 [2020-11-22 13:07:02,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:07:02,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-22 13:07:02,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-11-22 13:07:02,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-22 13:07:02,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 60 transitions. [2020-11-22 13:07:02,976 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 60 transitions. Word has length 5 [2020-11-22 13:07:02,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:02,977 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 60 transitions. [2020-11-22 13:07:02,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:07:02,977 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 60 transitions. [2020-11-22 13:07:02,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 13:07:02,978 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:02,978 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 13:07:02,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:07:02,978 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:07:02,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:02,981 INFO L82 PathProgramCache]: Analyzing trace with hash -10649674, now seen corresponding path program 1 times [2020-11-22 13:07:02,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:02,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943831662] [2020-11-22 13:07:02,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:03,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:03,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943831662] [2020-11-22 13:07:03,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:03,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:07:03,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337978688] [2020-11-22 13:07:03,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:07:03,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:07:03,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:07:03,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:03,095 INFO L87 Difference]: Start difference. First operand 33 states and 60 transitions. Second operand 4 states. [2020-11-22 13:07:03,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:03,217 INFO L93 Difference]: Finished difference Result 63 states and 114 transitions. [2020-11-22 13:07:03,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:07:03,218 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-22 13:07:03,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:03,220 INFO L225 Difference]: With dead ends: 63 [2020-11-22 13:07:03,220 INFO L226 Difference]: Without dead ends: 63 [2020-11-22 13:07:03,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:03,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-22 13:07:03,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 33. [2020-11-22 13:07:03,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-22 13:07:03,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 59 transitions. [2020-11-22 13:07:03,225 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 59 transitions. Word has length 6 [2020-11-22 13:07:03,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:03,225 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 59 transitions. [2020-11-22 13:07:03,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:07:03,226 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 59 transitions. [2020-11-22 13:07:03,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 13:07:03,229 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:03,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 13:07:03,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 13:07:03,230 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:07:03,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:03,230 INFO L82 PathProgramCache]: Analyzing trace with hash -10642482, now seen corresponding path program 1 times [2020-11-22 13:07:03,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:07:03,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999428784] [2020-11-22 13:07:03,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:07:03,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:07:03,285 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:07:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:07:03,335 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:07:03,360 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 13:07:03,360 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:07:03,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 13:07:03,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:07:03 BoogieIcfgContainer [2020-11-22 13:07:03,405 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:07:03,407 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:07:03,407 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:07:03,407 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:07:03,407 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:07:02" (3/4) ... [2020-11-22 13:07:03,410 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-22 13:07:03,410 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:07:03,413 INFO L168 Benchmark]: Toolchain (without parser) took 2392.15 ms. Allocated memory was 104.9 MB in the beginning and 130.0 MB in the end (delta: 25.2 MB). Free memory was 73.4 MB in the beginning and 98.1 MB in the end (delta: -24.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:07:03,414 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 81.8 MB. Free memory was 39.9 MB in the beginning and 39.9 MB in the end (delta: 36.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:07:03,415 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.50 ms. Allocated memory is still 104.9 MB. Free memory was 73.1 MB in the beginning and 79.8 MB in the end (delta: -6.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:03,416 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.07 ms. Allocated memory is still 104.9 MB. Free memory was 79.8 MB in the beginning and 78.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:03,418 INFO L168 Benchmark]: Boogie Preprocessor took 25.39 ms. Allocated memory is still 104.9 MB. Free memory was 78.1 MB in the beginning and 76.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:03,420 INFO L168 Benchmark]: RCFGBuilder took 1171.18 ms. Allocated memory was 104.9 MB in the beginning and 130.0 MB in the end (delta: 25.2 MB). Free memory was 76.5 MB in the beginning and 91.9 MB in the end (delta: -15.4 MB). Peak memory consumption was 36.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:03,424 INFO L168 Benchmark]: TraceAbstraction took 845.67 ms. Allocated memory is still 130.0 MB. Free memory was 91.2 MB in the beginning and 98.1 MB in the end (delta: -7.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:07:03,425 INFO L168 Benchmark]: Witness Printer took 4.17 ms. Allocated memory is still 130.0 MB. Free memory is still 98.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:07:03,430 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 81.8 MB. Free memory was 39.9 MB in the beginning and 39.9 MB in the end (delta: 36.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 301.50 ms. Allocated memory is still 104.9 MB. Free memory was 73.1 MB in the beginning and 79.8 MB in the end (delta: -6.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.07 ms. Allocated memory is still 104.9 MB. Free memory was 79.8 MB in the beginning and 78.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.39 ms. Allocated memory is still 104.9 MB. Free memory was 78.1 MB in the beginning and 76.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1171.18 ms. Allocated memory was 104.9 MB in the beginning and 130.0 MB in the end (delta: 25.2 MB). Free memory was 76.5 MB in the beginning and 91.9 MB in the end (delta: -15.4 MB). Peak memory consumption was 36.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 845.67 ms. Allocated memory is still 130.0 MB. Free memory was 91.2 MB in the beginning and 98.1 MB in the end (delta: -7.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.17 ms. Allocated memory is still 130.0 MB. Free memory is still 98.1 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; [L51] int cond; [L53] COND TRUE 1 [L54] cond = __VERIFIER_nondet_int() [L55] COND FALSE !(cond == 0) [L58] lk1 = 0 [L60] lk2 = 0 [L62] lk3 = 0 [L64] lk4 = 0 [L66] lk5 = 0 [L68] lk6 = 0 [L70] lk7 = 0 [L72] lk8 = 0 [L74] lk9 = 0 [L76] lk10 = 0 [L78] lk11 = 0 [L80] lk12 = 0 [L82] lk13 = 0 [L84] lk14 = 0 [L88] COND FALSE !(p1 != 0) [L92] COND FALSE !(p2 != 0) [L96] COND FALSE !(p3 != 0) [L100] COND FALSE !(p4 != 0) [L104] COND TRUE p5 != 0 [L105] lk5 = 1 [L108] COND FALSE !(p6 != 0) [L112] COND FALSE !(p7 != 0) [L116] COND FALSE !(p8 != 0) [L120] COND TRUE p9 != 0 [L121] lk9 = 1 [L124] COND FALSE !(p10 != 0) [L128] COND FALSE !(p11 != 0) [L132] COND TRUE p12 != 0 [L133] lk12 = 1 [L136] COND TRUE p13 != 0 [L137] lk13 = 1 [L140] COND FALSE !(p14 != 0) [L146] COND FALSE !(p1 != 0) [L151] COND FALSE !(p2 != 0) [L3] __assert_fail("0", "test_locks_14-2.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 183 SDtfs, 114 SDslu, 108 SDs, 0 SdLazy, 9 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 30 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 122 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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-a4ecdab [2020-11-22 13:07:05,817 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:07:05,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:07:05,858 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:07:05,859 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:07:05,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:07:05,862 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:07:05,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:07:05,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:07:05,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:07:05,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:07:05,871 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:07:05,871 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:07:05,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:07:05,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:07:05,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:07:05,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:07:05,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:07:05,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:07:05,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:07:05,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:07:05,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:07:05,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:07:05,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:07:05,894 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:07:05,895 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:07:05,895 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:07:05,896 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:07:05,897 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:07:05,899 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:07:05,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:07:05,900 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:07:05,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:07:05,902 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:07:05,903 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:07:05,904 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:07:05,905 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:07:05,905 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:07:05,906 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:07:05,907 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:07:05,908 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:07:05,912 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_aa04434d-c3e7-42af-9433-3214593ffc63/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-11-22 13:07:05,957 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:07:05,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:07:05,962 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:07:05,962 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:07:05,962 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:07:05,963 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:07:05,963 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:07:05,963 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:07:05,964 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:07:05,965 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-22 13:07:05,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-22 13:07:05,967 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:07:05,967 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:07:05,967 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 13:07:05,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:07:05,968 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:07:05,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:07:05,968 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-22 13:07:05,968 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-22 13:07:05,969 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-22 13:07:05,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:07:05,969 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:07:05,970 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 13:07:05,970 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 13:07:05,970 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:07:05,971 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:07:05,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:07:05,971 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 13:07:05,971 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:07:05,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:07:05,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:07:05,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:07:05,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:07:05,973 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 13:07:05,973 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 13:07:05,974 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:07:05,974 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:07:05,974 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:/tmp/vcloud-vcloud-master/worker/run_dir_aa04434d-c3e7-42af-9433-3214593ffc63/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_aa04434d-c3e7-42af-9433-3214593ffc63/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7dd19b8066311da8c1eb1c6a0e6567bb02c0b787 [2020-11-22 13:07:06,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:07:06,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:07:06,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:07:06,442 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:07:06,443 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:07:06,443 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_aa04434d-c3e7-42af-9433-3214593ffc63/bin/utaipan/../../sv-benchmarks/c/locks/test_locks_14-2.c [2020-11-22 13:07:06,507 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_aa04434d-c3e7-42af-9433-3214593ffc63/bin/utaipan/data/fdf7ff72c/2075f7d24f6748489111f90a3ceb6be1/FLAGf6d39478e [2020-11-22 13:07:07,028 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:07:07,028 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_aa04434d-c3e7-42af-9433-3214593ffc63/sv-benchmarks/c/locks/test_locks_14-2.c [2020-11-22 13:07:07,036 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_aa04434d-c3e7-42af-9433-3214593ffc63/bin/utaipan/data/fdf7ff72c/2075f7d24f6748489111f90a3ceb6be1/FLAGf6d39478e [2020-11-22 13:07:07,347 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_aa04434d-c3e7-42af-9433-3214593ffc63/bin/utaipan/data/fdf7ff72c/2075f7d24f6748489111f90a3ceb6be1 [2020-11-22 13:07:07,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:07:07,352 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:07:07,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:07:07,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:07:07,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:07:07,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:07:07" (1/1) ... [2020-11-22 13:07:07,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36428a63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:07, skipping insertion in model container [2020-11-22 13:07:07,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:07:07" (1/1) ... [2020-11-22 13:07:07,376 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:07:07,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:07:07,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:07:07,650 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:07:07,697 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:07:07,715 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:07:07,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:07 WrapperNode [2020-11-22 13:07:07,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:07:07,718 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:07:07,718 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:07:07,718 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:07:07,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:07" (1/1) ... [2020-11-22 13:07:07,745 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:07" (1/1) ... [2020-11-22 13:07:07,778 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:07:07,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:07:07,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:07:07,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:07:07,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:07" (1/1) ... [2020-11-22 13:07:07,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:07" (1/1) ... [2020-11-22 13:07:07,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:07" (1/1) ... [2020-11-22 13:07:07,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:07" (1/1) ... [2020-11-22 13:07:07,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:07" (1/1) ... [2020-11-22 13:07:07,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:07" (1/1) ... [2020-11-22 13:07:07,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:07" (1/1) ... [2020-11-22 13:07:07,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:07:07,834 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:07:07,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:07:07,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:07:07,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aa04434d-c3e7-42af-9433-3214593ffc63/bin/utaipan/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 [2020-11-22 13:07:07,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:07:07,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:07:07,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-22 13:07:07,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:07:08,536 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:07:08,536 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-22 13:07:08,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:07:08 BoogieIcfgContainer [2020-11-22 13:07:08,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:07:08,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:07:08,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:07:08,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:07:08,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:07:07" (1/3) ... [2020-11-22 13:07:08,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31dcd0ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:07:08, skipping insertion in model container [2020-11-22 13:07:08,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:07" (2/3) ... [2020-11-22 13:07:08,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31dcd0ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:07:08, skipping insertion in model container [2020-11-22 13:07:08,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:07:08" (3/3) ... [2020-11-22 13:07:08,550 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_14-2.c [2020-11-22 13:07:08,560 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:07:08,565 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-22 13:07:08,577 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-22 13:07:08,608 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:07:08,608 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-22 13:07:08,608 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:07:08,609 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:07:08,609 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:07:08,609 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:07:08,609 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:07:08,609 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:07:08,628 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-11-22 13:07:08,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 13:07:08,633 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:08,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 13:07:08,634 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:07:08,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:08,640 INFO L82 PathProgramCache]: Analyzing trace with hash 28943012, now seen corresponding path program 1 times [2020-11-22 13:07:08,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:07:08,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1006450897] [2020-11-22 13:07:08,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aa04434d-c3e7-42af-9433-3214593ffc63/bin/utaipan/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 [2020-11-22 13:07:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:08,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-22 13:07:08,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:07:08,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:08,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:07:08,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:08,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1006450897] [2020-11-22 13:07:08,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:08,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 13:07:08,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871743976] [2020-11-22 13:07:08,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:07:08,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:07:08,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:07:08,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:07:08,766 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2020-11-22 13:07:08,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:08,781 INFO L93 Difference]: Finished difference Result 53 states and 94 transitions. [2020-11-22 13:07:08,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:07:08,782 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-11-22 13:07:08,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:08,791 INFO L225 Difference]: With dead ends: 53 [2020-11-22 13:07:08,791 INFO L226 Difference]: Without dead ends: 51 [2020-11-22 13:07:08,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:07:08,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-22 13:07:08,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-11-22 13:07:08,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-22 13:07:08,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 92 transitions. [2020-11-22 13:07:08,826 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 92 transitions. Word has length 5 [2020-11-22 13:07:08,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:08,827 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 92 transitions. [2020-11-22 13:07:08,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:07:08,827 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 92 transitions. [2020-11-22 13:07:08,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 13:07:08,827 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:08,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 13:07:09,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 13:07:09,050 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:07:09,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:09,051 INFO L82 PathProgramCache]: Analyzing trace with hash 889700141, now seen corresponding path program 1 times [2020-11-22 13:07:09,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:07:09,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1161479766] [2020-11-22 13:07:09,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aa04434d-c3e7-42af-9433-3214593ffc63/bin/utaipan/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 [2020-11-22 13:07:09,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:09,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:07:09,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:07:09,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:09,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:07:09,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:09,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1161479766] [2020-11-22 13:07:09,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:09,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 13:07:09,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346627180] [2020-11-22 13:07:09,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:07:09,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:07:09,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:07:09,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:07:09,174 INFO L87 Difference]: Start difference. First operand 51 states and 92 transitions. Second operand 3 states. [2020-11-22 13:07:09,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:09,189 INFO L93 Difference]: Finished difference Result 50 states and 91 transitions. [2020-11-22 13:07:09,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:07:09,191 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-22 13:07:09,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:09,195 INFO L225 Difference]: With dead ends: 50 [2020-11-22 13:07:09,196 INFO L226 Difference]: Without dead ends: 48 [2020-11-22 13:07:09,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:07:09,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-11-22 13:07:09,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-11-22 13:07:09,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-22 13:07:09,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 89 transitions. [2020-11-22 13:07:09,207 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 89 transitions. Word has length 6 [2020-11-22 13:07:09,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:09,208 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 89 transitions. [2020-11-22 13:07:09,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:07:09,210 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 89 transitions. [2020-11-22 13:07:09,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-22 13:07:09,211 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:09,211 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] [2020-11-22 13:07:09,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-22 13:07:09,413 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:07:09,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:09,414 INFO L82 PathProgramCache]: Analyzing trace with hash 792943379, now seen corresponding path program 1 times [2020-11-22 13:07:09,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:07:09,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1885139013] [2020-11-22 13:07:09,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aa04434d-c3e7-42af-9433-3214593ffc63/bin/utaipan/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 [2020-11-22 13:07:09,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:09,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:07:09,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:07:09,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:09,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:07:09,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:09,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1885139013] [2020-11-22 13:07:09,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:09,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-22 13:07:09,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531666654] [2020-11-22 13:07:09,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:07:09,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:07:09,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:07:09,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:07:09,518 INFO L87 Difference]: Start difference. First operand 48 states and 89 transitions. Second operand 3 states. [2020-11-22 13:07:09,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:09,548 INFO L93 Difference]: Finished difference Result 93 states and 173 transitions. [2020-11-22 13:07:09,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:07:09,548 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-11-22 13:07:09,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:09,550 INFO L225 Difference]: With dead ends: 93 [2020-11-22 13:07:09,550 INFO L226 Difference]: Without dead ends: 93 [2020-11-22 13:07:09,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:07:09,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-22 13:07:09,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 63. [2020-11-22 13:07:09,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-22 13:07:09,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 118 transitions. [2020-11-22 13:07:09,568 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 118 transitions. Word has length 21 [2020-11-22 13:07:09,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:09,569 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 118 transitions. [2020-11-22 13:07:09,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:07:09,569 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 118 transitions. [2020-11-22 13:07:09,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-22 13:07:09,570 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:09,570 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] [2020-11-22 13:07:09,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-22 13:07:09,783 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:07:09,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:09,783 INFO L82 PathProgramCache]: Analyzing trace with hash 792950571, now seen corresponding path program 1 times [2020-11-22 13:07:09,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:07:09,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1206329892] [2020-11-22 13:07:09,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aa04434d-c3e7-42af-9433-3214593ffc63/bin/utaipan/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 [2020-11-22 13:07:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:09,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:07:09,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:07:09,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:09,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:07:09,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:09,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1206329892] [2020-11-22 13:07:09,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:09,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-22 13:07:09,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854711320] [2020-11-22 13:07:09,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:07:09,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:07:09,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:07:09,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:07:09,892 INFO L87 Difference]: Start difference. First operand 63 states and 118 transitions. Second operand 3 states. [2020-11-22 13:07:09,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:09,931 INFO L93 Difference]: Finished difference Result 94 states and 173 transitions. [2020-11-22 13:07:09,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:07:09,932 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-11-22 13:07:09,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:09,933 INFO L225 Difference]: With dead ends: 94 [2020-11-22 13:07:09,933 INFO L226 Difference]: Without dead ends: 94 [2020-11-22 13:07:09,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:07:09,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-11-22 13:07:09,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2020-11-22 13:07:09,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-11-22 13:07:09,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 172 transitions. [2020-11-22 13:07:09,944 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 172 transitions. Word has length 21 [2020-11-22 13:07:09,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:09,945 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 172 transitions. [2020-11-22 13:07:09,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:07:09,945 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 172 transitions. [2020-11-22 13:07:09,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-22 13:07:09,946 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:09,946 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] [2020-11-22 13:07:10,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-22 13:07:10,165 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:07:10,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:10,166 INFO L82 PathProgramCache]: Analyzing trace with hash -795404523, now seen corresponding path program 1 times [2020-11-22 13:07:10,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:07:10,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1139700919] [2020-11-22 13:07:10,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aa04434d-c3e7-42af-9433-3214593ffc63/bin/utaipan/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 [2020-11-22 13:07:10,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:10,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:07:10,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:07:10,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:10,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:07:10,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:10,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1139700919] [2020-11-22 13:07:10,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:10,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-22 13:07:10,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769905210] [2020-11-22 13:07:10,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:07:10,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:07:10,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:07:10,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:07:10,242 INFO L87 Difference]: Start difference. First operand 92 states and 172 transitions. Second operand 3 states. [2020-11-22 13:07:10,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:10,263 INFO L93 Difference]: Finished difference Result 96 states and 173 transitions. [2020-11-22 13:07:10,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:07:10,265 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-11-22 13:07:10,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:10,267 INFO L225 Difference]: With dead ends: 96 [2020-11-22 13:07:10,267 INFO L226 Difference]: Without dead ends: 96 [2020-11-22 13:07:10,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:07:10,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-11-22 13:07:10,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2020-11-22 13:07:10,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-11-22 13:07:10,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 172 transitions. [2020-11-22 13:07:10,279 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 172 transitions. Word has length 21 [2020-11-22 13:07:10,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:10,279 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 172 transitions. [2020-11-22 13:07:10,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:07:10,280 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 172 transitions. [2020-11-22 13:07:10,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-22 13:07:10,281 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:10,281 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] [2020-11-22 13:07:10,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-22 13:07:10,481 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:07:10,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:10,482 INFO L82 PathProgramCache]: Analyzing trace with hash -795397331, now seen corresponding path program 1 times [2020-11-22 13:07:10,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:07:10,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [609168799] [2020-11-22 13:07:10,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aa04434d-c3e7-42af-9433-3214593ffc63/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-22 13:07:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:10,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:07:10,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:07:10,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:10,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:07:10,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:10,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [609168799] [2020-11-22 13:07:10,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:10,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-22 13:07:10,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254125957] [2020-11-22 13:07:10,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:07:10,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:07:10,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:07:10,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:07:10,563 INFO L87 Difference]: Start difference. First operand 94 states and 172 transitions. Second operand 3 states. [2020-11-22 13:07:10,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:10,605 INFO L93 Difference]: Finished difference Result 127 states and 228 transitions. [2020-11-22 13:07:10,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:07:10,607 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-11-22 13:07:10,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:10,608 INFO L225 Difference]: With dead ends: 127 [2020-11-22 13:07:10,608 INFO L226 Difference]: Without dead ends: 127 [2020-11-22 13:07:10,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:07:10,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-11-22 13:07:10,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2020-11-22 13:07:10,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-11-22 13:07:10,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 227 transitions. [2020-11-22 13:07:10,623 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 227 transitions. Word has length 21 [2020-11-22 13:07:10,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:10,624 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 227 transitions. [2020-11-22 13:07:10,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:07:10,624 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 227 transitions. [2020-11-22 13:07:10,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-22 13:07:10,625 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:10,625 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] [2020-11-22 13:07:10,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-22 13:07:10,826 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:07:10,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:10,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1816465685, now seen corresponding path program 1 times [2020-11-22 13:07:10,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:07:10,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [864276775] [2020-11-22 13:07:10,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aa04434d-c3e7-42af-9433-3214593ffc63/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-22 13:07:10,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:07:10,898 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:07:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:07:10,939 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:07:11,022 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-22 13:07:11,022 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:07:11,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-22 13:07:11,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:07:11 BoogieIcfgContainer [2020-11-22 13:07:11,264 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:07:11,264 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:07:11,264 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:07:11,265 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:07:11,265 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:07:08" (3/4) ... [2020-11-22 13:07:11,268 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-22 13:07:11,268 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:07:11,270 INFO L168 Benchmark]: Toolchain (without parser) took 3917.29 ms. Allocated memory was 58.7 MB in the beginning and 79.7 MB in the end (delta: 21.0 MB). Free memory was 40.3 MB in the beginning and 40.2 MB in the end (delta: 93.4 kB). Peak memory consumption was 22.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:11,271 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 58.7 MB. Free memory is still 41.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:07:11,271 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.63 ms. Allocated memory is still 58.7 MB. Free memory was 40.0 MB in the beginning and 28.9 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:11,272 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.21 ms. Allocated memory is still 58.7 MB. Free memory was 28.9 MB in the beginning and 27.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:11,273 INFO L168 Benchmark]: Boogie Preprocessor took 52.56 ms. Allocated memory is still 58.7 MB. Free memory was 27.1 MB in the beginning and 25.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:11,274 INFO L168 Benchmark]: RCFGBuilder took 705.11 ms. Allocated memory was 58.7 MB in the beginning and 79.7 MB in the end (delta: 21.0 MB). Free memory was 25.5 MB in the beginning and 60.3 MB in the end (delta: -34.8 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:11,274 INFO L168 Benchmark]: TraceAbstraction took 2721.05 ms. Allocated memory is still 79.7 MB. Free memory was 60.0 MB in the beginning and 40.2 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:11,275 INFO L168 Benchmark]: Witness Printer took 3.97 ms. Allocated memory is still 79.7 MB. Free memory is still 40.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:07:11,279 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 58.7 MB. Free memory is still 41.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 361.63 ms. Allocated memory is still 58.7 MB. Free memory was 40.0 MB in the beginning and 28.9 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.21 ms. Allocated memory is still 58.7 MB. Free memory was 28.9 MB in the beginning and 27.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.56 ms. Allocated memory is still 58.7 MB. Free memory was 27.1 MB in the beginning and 25.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 705.11 ms. Allocated memory was 58.7 MB in the beginning and 79.7 MB in the end (delta: 21.0 MB). Free memory was 25.5 MB in the beginning and 60.3 MB in the end (delta: -34.8 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2721.05 ms. Allocated memory is still 79.7 MB. Free memory was 60.0 MB in the beginning and 40.2 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. * Witness Printer took 3.97 ms. Allocated memory is still 79.7 MB. Free memory is still 40.2 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; [L51] int cond; [L53] COND TRUE 1 [L54] cond = __VERIFIER_nondet_int() [L55] COND FALSE !(cond == 0) [L58] lk1 = 0 [L60] lk2 = 0 [L62] lk3 = 0 [L64] lk4 = 0 [L66] lk5 = 0 [L68] lk6 = 0 [L70] lk7 = 0 [L72] lk8 = 0 [L74] lk9 = 0 [L76] lk10 = 0 [L78] lk11 = 0 [L80] lk12 = 0 [L82] lk13 = 0 [L84] lk14 = 0 [L88] COND FALSE !(p1 != 0) [L92] COND FALSE !(p2 != 0) [L96] COND FALSE !(p3 != 0) [L100] COND TRUE p4 != 0 [L101] lk4 = 1 [L104] COND TRUE p5 != 0 [L105] lk5 = 1 [L108] COND TRUE p6 != 0 [L109] lk6 = 1 [L112] COND TRUE p7 != 0 [L113] lk7 = 1 [L116] COND TRUE p8 != 0 [L117] lk8 = 1 [L120] COND TRUE p9 != 0 [L121] lk9 = 1 [L124] COND TRUE p10 != 0 [L125] lk10 = 1 [L128] COND FALSE !(p11 != 0) [L132] COND TRUE p12 != 0 [L133] lk12 = 1 [L136] COND TRUE p13 != 0 [L137] lk13 = 1 [L140] COND TRUE p14 != 0 [L141] lk14 = 1 [L146] COND FALSE !(p1 != 0) [L151] COND FALSE !(p2 != 0) [L3] __assert_fail("0", "test_locks_14-2.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 54 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.6s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 624 SDtfs, 364 SDslu, 282 SDs, 0 SdLazy, 22 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 178 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=125occurred in iteration=6, 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, 6 MinimizatonAttempts, 36 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 178 ConstructedInterpolants, 0 QuantifiedInterpolants, 10242 SizeOfPredicates, 1 NumberOfNonLiveVariables, 317 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...