./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fd523f7f98069bc15a8892c75be26f15a858863c31fc6ea863dcd5f92e46c458 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:09:25,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:09:25,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:09:25,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:09:25,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:09:25,671 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:09:25,673 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:09:25,675 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:09:25,677 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:09:25,678 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:09:25,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:09:25,680 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:09:25,681 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:09:25,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:09:25,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:09:25,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:09:25,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:09:25,686 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:09:25,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:09:25,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:09:25,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:09:25,694 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:09:25,695 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:09:25,696 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:09:25,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:09:25,701 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:09:25,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:09:25,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:09:25,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:09:25,705 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:09:25,705 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:09:25,706 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:09:25,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:09:25,716 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:09:25,717 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:09:25,717 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:09:25,718 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:09:25,719 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:09:25,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:09:25,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:09:25,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:09:25,722 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-16 12:09:25,746 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:09:25,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:09:25,747 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:09:25,747 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:09:25,748 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:09:25,748 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:09:25,749 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:09:25,749 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:09:25,750 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:09:25,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:09:25,750 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:09:25,750 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:09:25,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:09:25,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:09:25,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:09:25,752 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 12:09:25,752 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 12:09:25,752 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 12:09:25,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:09:25,753 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:09:25,753 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:09:25,753 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:09:25,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:09:25,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:09:25,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:09:25,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:09:25,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:09:25,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:09:25,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:09:25,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:09:25,756 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd523f7f98069bc15a8892c75be26f15a858863c31fc6ea863dcd5f92e46c458 [2022-11-16 12:09:26,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:09:26,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:09:26,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:09:26,071 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:09:26,072 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:09:26,073 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2022-11-16 12:09:26,162 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/data/b2f763ded/1ae52a6a33414b23819bb553a8995591/FLAG57d405075 [2022-11-16 12:09:26,722 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:09:26,724 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2022-11-16 12:09:26,735 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/data/b2f763ded/1ae52a6a33414b23819bb553a8995591/FLAG57d405075 [2022-11-16 12:09:27,104 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/data/b2f763ded/1ae52a6a33414b23819bb553a8995591 [2022-11-16 12:09:27,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:09:27,108 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:09:27,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:09:27,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:09:27,120 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:09:27,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:09:27" (1/1) ... [2022-11-16 12:09:27,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37672a2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:27, skipping insertion in model container [2022-11-16 12:09:27,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:09:27" (1/1) ... [2022-11-16 12:09:27,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:09:27,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:09:27,373 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c[2087,2100] [2022-11-16 12:09:27,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:09:27,389 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:09:27,425 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c[2087,2100] [2022-11-16 12:09:27,433 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:09:27,449 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:09:27,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:27 WrapperNode [2022-11-16 12:09:27,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:09:27,451 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:09:27,451 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:09:27,452 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:09:27,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:27" (1/1) ... [2022-11-16 12:09:27,477 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:27" (1/1) ... [2022-11-16 12:09:27,507 INFO L138 Inliner]: procedures = 21, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 76 [2022-11-16 12:09:27,508 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:09:27,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:09:27,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:09:27,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:09:27,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:27" (1/1) ... [2022-11-16 12:09:27,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:27" (1/1) ... [2022-11-16 12:09:27,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:27" (1/1) ... [2022-11-16 12:09:27,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:27" (1/1) ... [2022-11-16 12:09:27,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:27" (1/1) ... [2022-11-16 12:09:27,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:27" (1/1) ... [2022-11-16 12:09:27,550 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:27" (1/1) ... [2022-11-16 12:09:27,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:27" (1/1) ... [2022-11-16 12:09:27,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:09:27,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:09:27,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:09:27,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:09:27,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:27" (1/1) ... [2022-11-16 12:09:27,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:09:27,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:09:27,600 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:09:27,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:09:27,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:09:27,647 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:09:27,648 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:09:27,648 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:09:27,648 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:09:27,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:09:27,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:09:27,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:09:27,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:09:27,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:09:27,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:09:27,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:09:27,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:09:27,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:09:27,652 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:09:27,756 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:09:27,758 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:09:28,014 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:09:28,082 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:09:28,089 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 12:09:28,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:09:28 BoogieIcfgContainer [2022-11-16 12:09:28,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:09:28,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:09:28,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:09:28,103 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:09:28,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:09:27" (1/3) ... [2022-11-16 12:09:28,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f470915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:09:28, skipping insertion in model container [2022-11-16 12:09:28,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:27" (2/3) ... [2022-11-16 12:09:28,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f470915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:09:28, skipping insertion in model container [2022-11-16 12:09:28,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:09:28" (3/3) ... [2022-11-16 12:09:28,107 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1-alt.wvr.c [2022-11-16 12:09:28,131 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:09:28,131 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-16 12:09:28,131 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:09:28,239 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 12:09:28,288 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 12:09:28,308 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 101 transitions, 218 flow [2022-11-16 12:09:28,311 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 101 transitions, 218 flow [2022-11-16 12:09:28,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 101 transitions, 218 flow [2022-11-16 12:09:28,388 INFO L130 PetriNetUnfolder]: 6/99 cut-off events. [2022-11-16 12:09:28,388 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 12:09:28,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 99 events. 6/99 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2022-11-16 12:09:28,395 INFO L119 LiptonReduction]: Number of co-enabled transitions 660 [2022-11-16 12:09:32,582 INFO L134 LiptonReduction]: Checked pairs total: 767 [2022-11-16 12:09:32,582 INFO L136 LiptonReduction]: Total number of compositions: 99 [2022-11-16 12:09:32,591 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 27 transitions, 70 flow [2022-11-16 12:09:32,610 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:32,628 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:09:32,635 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7b0529cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:09:32,636 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-16 12:09:32,638 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:32,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-16 12:09:32,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:32,643 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-16 12:09:32,644 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:09:32,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:32,649 INFO L85 PathProgramCache]: Analyzing trace with hash 407, now seen corresponding path program 1 times [2022-11-16 12:09:32,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:32,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047564797] [2022-11-16 12:09:32,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:32,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:32,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:32,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:32,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:32,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047564797] [2022-11-16 12:09:32,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047564797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:32,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:32,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-16 12:09:32,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560891479] [2022-11-16 12:09:32,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:32,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:09:32,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:32,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:09:32,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:09:32,797 INFO L87 Difference]: Start difference. First operand has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:32,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:32,865 INFO L93 Difference]: Finished difference Result 64 states and 151 transitions. [2022-11-16 12:09:32,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:09:32,872 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2022-11-16 12:09:32,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:32,886 INFO L225 Difference]: With dead ends: 64 [2022-11-16 12:09:32,886 INFO L226 Difference]: Without dead ends: 64 [2022-11-16 12:09:32,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:09:32,892 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:32,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:09:32,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-16 12:09:32,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-11-16 12:09:32,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 57 states have (on average 2.6491228070175437) internal successors, (151), 63 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:32,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 151 transitions. [2022-11-16 12:09:32,955 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 151 transitions. Word has length 1 [2022-11-16 12:09:32,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:32,955 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 151 transitions. [2022-11-16 12:09:32,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:32,961 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 151 transitions. [2022-11-16 12:09:32,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 12:09:32,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:32,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 12:09:32,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:09:32,964 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:09:32,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:32,965 INFO L85 PathProgramCache]: Analyzing trace with hash 401926, now seen corresponding path program 1 times [2022-11-16 12:09:32,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:32,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958837959] [2022-11-16 12:09:32,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:32,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:33,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:33,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:33,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958837959] [2022-11-16 12:09:33,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958837959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:33,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:33,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:09:33,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764993349] [2022-11-16 12:09:33,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:33,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:09:33,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:33,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:09:33,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:09:33,309 INFO L87 Difference]: Start difference. First operand 64 states and 151 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:33,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:33,355 INFO L93 Difference]: Finished difference Result 58 states and 139 transitions. [2022-11-16 12:09:33,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:09:33,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-16 12:09:33,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:33,357 INFO L225 Difference]: With dead ends: 58 [2022-11-16 12:09:33,357 INFO L226 Difference]: Without dead ends: 58 [2022-11-16 12:09:33,358 INFO L412 NwaCegarLoop]: 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 [2022-11-16 12:09:33,359 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:33,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:09:33,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-16 12:09:33,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-11-16 12:09:33,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 2.6226415094339623) internal successors, (139), 57 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:33,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 139 transitions. [2022-11-16 12:09:33,369 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 139 transitions. Word has length 3 [2022-11-16 12:09:33,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:33,369 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 139 transitions. [2022-11-16 12:09:33,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:33,370 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 139 transitions. [2022-11-16 12:09:33,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 12:09:33,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:33,370 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 12:09:33,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:09:33,371 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:09:33,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:33,372 INFO L85 PathProgramCache]: Analyzing trace with hash 401927, now seen corresponding path program 1 times [2022-11-16 12:09:33,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:33,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738571042] [2022-11-16 12:09:33,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:33,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:33,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:33,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:33,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738571042] [2022-11-16 12:09:33,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738571042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:33,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:33,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:09:33,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156269552] [2022-11-16 12:09:33,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:33,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:09:33,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:33,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:09:33,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:09:33,430 INFO L87 Difference]: Start difference. First operand 58 states and 139 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:33,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:33,466 INFO L93 Difference]: Finished difference Result 52 states and 127 transitions. [2022-11-16 12:09:33,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:09:33,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-16 12:09:33,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:33,471 INFO L225 Difference]: With dead ends: 52 [2022-11-16 12:09:33,473 INFO L226 Difference]: Without dead ends: 52 [2022-11-16 12:09:33,474 INFO L412 NwaCegarLoop]: 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 [2022-11-16 12:09:33,476 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:33,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:09:33,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-16 12:09:33,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-11-16 12:09:33,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 49 states have (on average 2.5918367346938775) internal successors, (127), 51 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:33,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 127 transitions. [2022-11-16 12:09:33,489 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 127 transitions. Word has length 3 [2022-11-16 12:09:33,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:33,489 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 127 transitions. [2022-11-16 12:09:33,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:33,490 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 127 transitions. [2022-11-16 12:09:33,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 12:09:33,490 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:33,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 12:09:33,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:09:33,491 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:09:33,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:33,492 INFO L85 PathProgramCache]: Analyzing trace with hash 386258854, now seen corresponding path program 1 times [2022-11-16 12:09:33,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:33,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006069808] [2022-11-16 12:09:33,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:33,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:33,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:33,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:33,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006069808] [2022-11-16 12:09:33,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006069808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:33,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:33,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:09:33,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115184832] [2022-11-16 12:09:33,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:33,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:09:33,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:33,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:09:33,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:09:33,653 INFO L87 Difference]: Start difference. First operand 52 states and 127 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:33,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:33,683 INFO L93 Difference]: Finished difference Result 43 states and 100 transitions. [2022-11-16 12:09:33,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:09:33,684 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 12:09:33,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:33,685 INFO L225 Difference]: With dead ends: 43 [2022-11-16 12:09:33,686 INFO L226 Difference]: Without dead ends: 43 [2022-11-16 12:09:33,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:09:33,688 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:33,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:09:33,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-16 12:09:33,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-11-16 12:09:33,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 2.4390243902439024) internal successors, (100), 42 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:33,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 100 transitions. [2022-11-16 12:09:33,709 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 100 transitions. Word has length 5 [2022-11-16 12:09:33,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:33,710 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 100 transitions. [2022-11-16 12:09:33,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:33,712 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 100 transitions. [2022-11-16 12:09:33,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 12:09:33,712 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:33,712 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 12:09:33,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:09:33,713 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:09:33,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:33,714 INFO L85 PathProgramCache]: Analyzing trace with hash 386258855, now seen corresponding path program 1 times [2022-11-16 12:09:33,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:33,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637092099] [2022-11-16 12:09:33,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:33,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:33,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:33,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:33,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637092099] [2022-11-16 12:09:33,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637092099] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:33,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:33,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:09:33,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377138274] [2022-11-16 12:09:33,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:33,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:09:33,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:33,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:09:33,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:09:33,789 INFO L87 Difference]: Start difference. First operand 43 states and 100 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:33,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:33,819 INFO L93 Difference]: Finished difference Result 34 states and 73 transitions. [2022-11-16 12:09:33,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:09:33,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 12:09:33,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:33,827 INFO L225 Difference]: With dead ends: 34 [2022-11-16 12:09:33,827 INFO L226 Difference]: Without dead ends: 34 [2022-11-16 12:09:33,828 INFO L412 NwaCegarLoop]: 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 [2022-11-16 12:09:33,829 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:33,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:09:33,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-16 12:09:33,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-16 12:09:33,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 2.212121212121212) internal successors, (73), 33 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:33,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 73 transitions. [2022-11-16 12:09:33,836 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 73 transitions. Word has length 5 [2022-11-16 12:09:33,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:33,837 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 73 transitions. [2022-11-16 12:09:33,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:33,837 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 73 transitions. [2022-11-16 12:09:33,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 12:09:33,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:33,838 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:33,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:09:33,839 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:09:33,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:33,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1240294810, now seen corresponding path program 1 times [2022-11-16 12:09:33,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:33,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398339858] [2022-11-16 12:09:33,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:33,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:33,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:34,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:34,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:34,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398339858] [2022-11-16 12:09:34,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398339858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:34,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:34,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:09:34,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696281926] [2022-11-16 12:09:34,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:34,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:09:34,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:34,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:09:34,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:09:34,350 INFO L87 Difference]: Start difference. First operand 34 states and 73 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:34,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:34,544 INFO L93 Difference]: Finished difference Result 67 states and 128 transitions. [2022-11-16 12:09:34,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:09:34,545 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-16 12:09:34,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:34,547 INFO L225 Difference]: With dead ends: 67 [2022-11-16 12:09:34,547 INFO L226 Difference]: Without dead ends: 52 [2022-11-16 12:09:34,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:09:34,549 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 37 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:34,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 10 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:09:34,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-16 12:09:34,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 44. [2022-11-16 12:09:34,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 2.186046511627907) internal successors, (94), 43 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:34,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 94 transitions. [2022-11-16 12:09:34,567 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 94 transitions. Word has length 13 [2022-11-16 12:09:34,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:34,567 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 94 transitions. [2022-11-16 12:09:34,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:34,568 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 94 transitions. [2022-11-16 12:09:34,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 12:09:34,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:34,569 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:34,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:09:34,569 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:09:34,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:34,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1217479320, now seen corresponding path program 2 times [2022-11-16 12:09:34,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:34,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782004823] [2022-11-16 12:09:34,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:34,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:34,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:34,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:34,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:34,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782004823] [2022-11-16 12:09:34,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782004823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:34,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:34,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:09:34,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241014240] [2022-11-16 12:09:34,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:34,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:09:34,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:34,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:09:34,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:09:34,948 INFO L87 Difference]: Start difference. First operand 44 states and 94 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:35,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:35,040 INFO L93 Difference]: Finished difference Result 71 states and 132 transitions. [2022-11-16 12:09:35,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:09:35,041 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-16 12:09:35,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:35,042 INFO L225 Difference]: With dead ends: 71 [2022-11-16 12:09:35,042 INFO L226 Difference]: Without dead ends: 62 [2022-11-16 12:09:35,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:09:35,043 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 47 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:35,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 7 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:09:35,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-16 12:09:35,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 46. [2022-11-16 12:09:35,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 2.2) internal successors, (99), 45 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:35,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 99 transitions. [2022-11-16 12:09:35,046 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 99 transitions. Word has length 13 [2022-11-16 12:09:35,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:35,046 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 99 transitions. [2022-11-16 12:09:35,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:35,047 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 99 transitions. [2022-11-16 12:09:35,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 12:09:35,047 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:35,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:35,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:09:35,048 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:09:35,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:35,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1126203540, now seen corresponding path program 3 times [2022-11-16 12:09:35,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:35,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410926342] [2022-11-16 12:09:35,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:35,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:35,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:35,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:35,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410926342] [2022-11-16 12:09:35,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410926342] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:35,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:35,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:09:35,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034749512] [2022-11-16 12:09:35,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:35,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:09:35,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:35,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:09:35,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:09:35,417 INFO L87 Difference]: Start difference. First operand 46 states and 99 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:35,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:35,581 INFO L93 Difference]: Finished difference Result 61 states and 118 transitions. [2022-11-16 12:09:35,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:09:35,582 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-16 12:09:35,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:35,583 INFO L225 Difference]: With dead ends: 61 [2022-11-16 12:09:35,583 INFO L226 Difference]: Without dead ends: 56 [2022-11-16 12:09:35,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:09:35,585 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 30 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:35,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 7 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:09:35,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-16 12:09:35,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 48. [2022-11-16 12:09:35,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 2.1702127659574466) internal successors, (102), 47 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:35,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 102 transitions. [2022-11-16 12:09:35,592 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 102 transitions. Word has length 13 [2022-11-16 12:09:35,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:35,593 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 102 transitions. [2022-11-16 12:09:35,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:35,593 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 102 transitions. [2022-11-16 12:09:35,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 12:09:35,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:35,594 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:35,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:09:35,594 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:09:35,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:35,595 INFO L85 PathProgramCache]: Analyzing trace with hash -459256556, now seen corresponding path program 4 times [2022-11-16 12:09:35,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:35,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120374578] [2022-11-16 12:09:35,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:35,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:35,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:35,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:35,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:35,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120374578] [2022-11-16 12:09:35,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120374578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:35,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:35,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:09:35,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468232199] [2022-11-16 12:09:35,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:35,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:09:35,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:35,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:09:35,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:09:35,920 INFO L87 Difference]: Start difference. First operand 48 states and 102 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:36,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:36,022 INFO L93 Difference]: Finished difference Result 63 states and 121 transitions. [2022-11-16 12:09:36,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:09:36,023 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-16 12:09:36,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:36,024 INFO L225 Difference]: With dead ends: 63 [2022-11-16 12:09:36,024 INFO L226 Difference]: Without dead ends: 58 [2022-11-16 12:09:36,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:09:36,025 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 23 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:36,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 10 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:09:36,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-16 12:09:36,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 48. [2022-11-16 12:09:36,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 2.1702127659574466) internal successors, (102), 47 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:36,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 102 transitions. [2022-11-16 12:09:36,029 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 102 transitions. Word has length 13 [2022-11-16 12:09:36,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:36,029 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 102 transitions. [2022-11-16 12:09:36,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:36,029 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 102 transitions. [2022-11-16 12:09:36,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 12:09:36,030 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:36,030 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:36,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:09:36,030 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:09:36,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:36,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1178514998, now seen corresponding path program 5 times [2022-11-16 12:09:36,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:36,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077825103] [2022-11-16 12:09:36,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:36,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:36,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:36,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:36,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:36,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077825103] [2022-11-16 12:09:36,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077825103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:36,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:36,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:09:36,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815676368] [2022-11-16 12:09:36,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:36,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:09:36,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:36,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:09:36,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:09:36,335 INFO L87 Difference]: Start difference. First operand 48 states and 102 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:36,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:36,486 INFO L93 Difference]: Finished difference Result 63 states and 119 transitions. [2022-11-16 12:09:36,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:09:36,487 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-16 12:09:36,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:36,487 INFO L225 Difference]: With dead ends: 63 [2022-11-16 12:09:36,487 INFO L226 Difference]: Without dead ends: 54 [2022-11-16 12:09:36,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:09:36,488 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 21 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:36,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 9 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:09:36,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-16 12:09:36,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 44. [2022-11-16 12:09:36,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 2.1627906976744184) internal successors, (93), 43 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:36,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 93 transitions. [2022-11-16 12:09:36,491 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 93 transitions. Word has length 13 [2022-11-16 12:09:36,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:36,491 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 93 transitions. [2022-11-16 12:09:36,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:36,491 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 93 transitions. [2022-11-16 12:09:36,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 12:09:36,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:36,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:36,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:09:36,492 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:09:36,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:36,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1269790778, now seen corresponding path program 6 times [2022-11-16 12:09:36,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:36,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253550026] [2022-11-16 12:09:36,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:36,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:36,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:36,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:36,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253550026] [2022-11-16 12:09:36,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253550026] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:36,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:36,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:09:36,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286826000] [2022-11-16 12:09:36,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:36,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:09:36,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:36,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:09:36,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:09:36,829 INFO L87 Difference]: Start difference. First operand 44 states and 93 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:36,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:36,978 INFO L93 Difference]: Finished difference Result 53 states and 105 transitions. [2022-11-16 12:09:36,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:09:36,979 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-16 12:09:36,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:36,979 INFO L225 Difference]: With dead ends: 53 [2022-11-16 12:09:36,979 INFO L226 Difference]: Without dead ends: 48 [2022-11-16 12:09:36,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:09:36,980 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 21 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:36,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 9 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:09:36,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-16 12:09:36,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2022-11-16 12:09:36,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 41 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:36,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 88 transitions. [2022-11-16 12:09:36,983 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 88 transitions. Word has length 13 [2022-11-16 12:09:36,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:36,984 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 88 transitions. [2022-11-16 12:09:36,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:36,984 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 88 transitions. [2022-11-16 12:09:36,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 12:09:36,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:36,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:36,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:09:36,985 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:09:36,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:36,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1826588681, now seen corresponding path program 1 times [2022-11-16 12:09:36,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:36,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632826363] [2022-11-16 12:09:36,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:36,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:37,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:37,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:37,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:37,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632826363] [2022-11-16 12:09:37,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632826363] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:09:37,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212498168] [2022-11-16 12:09:37,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:37,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:37,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:09:37,298 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:09:37,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:09:37,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:37,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-16 12:09:37,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:37,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:37,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:09:37,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:37,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212498168] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:09:37,941 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:09:37,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2022-11-16 12:09:37,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591100120] [2022-11-16 12:09:37,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:09:37,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:09:37,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:37,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:09:37,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:09:37,943 INFO L87 Difference]: Start difference. First operand 42 states and 88 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:38,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:38,885 INFO L93 Difference]: Finished difference Result 151 states and 289 transitions. [2022-11-16 12:09:38,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 12:09:38,885 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-16 12:09:38,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:38,886 INFO L225 Difference]: With dead ends: 151 [2022-11-16 12:09:38,886 INFO L226 Difference]: Without dead ends: 122 [2022-11-16 12:09:38,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2022-11-16 12:09:38,887 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 146 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:38,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 33 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:09:38,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-16 12:09:38,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 72. [2022-11-16 12:09:38,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 2.2535211267605635) internal successors, (160), 71 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:38,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 160 transitions. [2022-11-16 12:09:38,893 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 160 transitions. Word has length 14 [2022-11-16 12:09:38,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:38,893 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 160 transitions. [2022-11-16 12:09:38,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:38,893 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 160 transitions. [2022-11-16 12:09:38,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 12:09:38,897 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:38,898 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:38,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:39,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:39,104 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:09:39,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:39,104 INFO L85 PathProgramCache]: Analyzing trace with hash 10604485, now seen corresponding path program 2 times [2022-11-16 12:09:39,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:39,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888445013] [2022-11-16 12:09:39,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:39,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:39,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:39,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:39,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:39,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888445013] [2022-11-16 12:09:39,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888445013] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:09:39,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056556691] [2022-11-16 12:09:39,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:09:39,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:39,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:09:39,356 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:09:39,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:09:39,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:09:39,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:09:39,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-16 12:09:39,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:39,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:39,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:09:39,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:39,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056556691] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:09:39,932 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:09:39,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2022-11-16 12:09:39,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582273670] [2022-11-16 12:09:39,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:09:39,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:09:39,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:39,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:09:39,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:09:39,934 INFO L87 Difference]: Start difference. First operand 72 states and 160 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:41,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:41,140 INFO L93 Difference]: Finished difference Result 183 states and 342 transitions. [2022-11-16 12:09:41,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 12:09:41,141 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-16 12:09:41,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:41,142 INFO L225 Difference]: With dead ends: 183 [2022-11-16 12:09:41,142 INFO L226 Difference]: Without dead ends: 160 [2022-11-16 12:09:41,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=282, Invalid=908, Unknown=0, NotChecked=0, Total=1190 [2022-11-16 12:09:41,144 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 162 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:41,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 16 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:09:41,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-11-16 12:09:41,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 80. [2022-11-16 12:09:41,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 2.3544303797468356) internal successors, (186), 79 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:41,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 186 transitions. [2022-11-16 12:09:41,149 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 186 transitions. Word has length 14 [2022-11-16 12:09:41,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:41,150 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 186 transitions. [2022-11-16 12:09:41,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:41,152 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 186 transitions. [2022-11-16 12:09:41,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 12:09:41,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:41,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:41,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:41,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:41,359 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:09:41,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:41,359 INFO L85 PathProgramCache]: Analyzing trace with hash 101880265, now seen corresponding path program 3 times [2022-11-16 12:09:41,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:41,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959108734] [2022-11-16 12:09:41,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:41,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:41,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:41,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:41,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959108734] [2022-11-16 12:09:41,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959108734] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:09:41,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496455156] [2022-11-16 12:09:41,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:09:41,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:41,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:09:41,629 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:09:41,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:09:41,713 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 12:09:41,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:09:41,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-16 12:09:41,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:41,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:41,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:09:42,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:42,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496455156] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:09:42,209 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:09:42,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2022-11-16 12:09:42,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709545312] [2022-11-16 12:09:42,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:09:42,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:09:42,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:42,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:09:42,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:09:42,211 INFO L87 Difference]: Start difference. First operand 80 states and 186 transitions. Second operand has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:43,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:43,262 INFO L93 Difference]: Finished difference Result 169 states and 314 transitions. [2022-11-16 12:09:43,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 12:09:43,266 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-16 12:09:43,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:43,267 INFO L225 Difference]: With dead ends: 169 [2022-11-16 12:09:43,267 INFO L226 Difference]: Without dead ends: 154 [2022-11-16 12:09:43,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=291, Invalid=899, Unknown=0, NotChecked=0, Total=1190 [2022-11-16 12:09:43,268 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 156 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:43,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 23 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:09:43,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-11-16 12:09:43,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 82. [2022-11-16 12:09:43,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 2.3333333333333335) internal successors, (189), 81 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:43,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 189 transitions. [2022-11-16 12:09:43,277 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 189 transitions. Word has length 14 [2022-11-16 12:09:43,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:43,277 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 189 transitions. [2022-11-16 12:09:43,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:43,278 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 189 transitions. [2022-11-16 12:09:43,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 12:09:43,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:43,280 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:43,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:43,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 12:09:43,480 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:09:43,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:43,481 INFO L85 PathProgramCache]: Analyzing trace with hash -174941245, now seen corresponding path program 4 times [2022-11-16 12:09:43,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:43,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750147711] [2022-11-16 12:09:43,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:43,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:43,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:43,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:43,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:43,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750147711] [2022-11-16 12:09:43,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750147711] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:09:43,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95680502] [2022-11-16 12:09:43,706 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 12:09:43,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:43,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:09:43,708 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:09:43,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:09:43,812 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 12:09:43,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:09:43,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-16 12:09:43,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:44,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:44,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:09:44,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:44,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95680502] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:09:44,316 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:09:44,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2022-11-16 12:09:44,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010533825] [2022-11-16 12:09:44,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:09:44,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:09:44,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:44,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:09:44,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:09:44,319 INFO L87 Difference]: Start difference. First operand 82 states and 189 transitions. Second operand has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:44,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:44,709 INFO L93 Difference]: Finished difference Result 118 states and 244 transitions. [2022-11-16 12:09:44,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:09:44,710 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-16 12:09:44,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:44,711 INFO L225 Difference]: With dead ends: 118 [2022-11-16 12:09:44,711 INFO L226 Difference]: Without dead ends: 108 [2022-11-16 12:09:44,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2022-11-16 12:09:44,712 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 61 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:44,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 16 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:09:44,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-16 12:09:44,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 84. [2022-11-16 12:09:44,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 2.3132530120481927) internal successors, (192), 83 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:44,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 192 transitions. [2022-11-16 12:09:44,720 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 192 transitions. Word has length 14 [2022-11-16 12:09:44,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:44,720 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 192 transitions. [2022-11-16 12:09:44,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:44,721 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 192 transitions. [2022-11-16 12:09:44,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 12:09:44,721 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:44,722 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:44,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:44,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 12:09:44,922 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:09:44,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:44,923 INFO L85 PathProgramCache]: Analyzing trace with hash -974421221, now seen corresponding path program 5 times [2022-11-16 12:09:44,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:44,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5222219] [2022-11-16 12:09:44,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:44,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:45,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:45,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:45,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5222219] [2022-11-16 12:09:45,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5222219] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:09:45,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400365881] [2022-11-16 12:09:45,170 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 12:09:45,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:45,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:09:45,171 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:09:45,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:09:45,244 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:09:45,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:09:45,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-16 12:09:45,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:45,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:45,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:09:45,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:45,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400365881] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:09:45,714 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:09:45,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2022-11-16 12:09:45,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817549505] [2022-11-16 12:09:45,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:09:45,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:09:45,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:45,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:09:45,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:09:45,716 INFO L87 Difference]: Start difference. First operand 84 states and 192 transitions. Second operand has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:46,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:46,078 INFO L93 Difference]: Finished difference Result 116 states and 239 transitions. [2022-11-16 12:09:46,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:09:46,079 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-16 12:09:46,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:46,080 INFO L225 Difference]: With dead ends: 116 [2022-11-16 12:09:46,080 INFO L226 Difference]: Without dead ends: 106 [2022-11-16 12:09:46,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=142, Invalid=458, Unknown=0, NotChecked=0, Total=600 [2022-11-16 12:09:46,081 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 37 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:46,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 29 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:09:46,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-16 12:09:46,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 84. [2022-11-16 12:09:46,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 2.3132530120481927) internal successors, (192), 83 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:46,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 192 transitions. [2022-11-16 12:09:46,085 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 192 transitions. Word has length 14 [2022-11-16 12:09:46,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:46,086 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 192 transitions. [2022-11-16 12:09:46,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:46,087 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 192 transitions. [2022-11-16 12:09:46,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 12:09:46,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:46,087 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:46,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-16 12:09:46,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 12:09:46,288 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:09:46,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:46,289 INFO L85 PathProgramCache]: Analyzing trace with hash 993973509, now seen corresponding path program 6 times [2022-11-16 12:09:46,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:46,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858141087] [2022-11-16 12:09:46,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:46,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:46,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:46,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:46,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:46,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858141087] [2022-11-16 12:09:46,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858141087] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:09:46,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599980931] [2022-11-16 12:09:46,520 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 12:09:46,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:46,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:09:46,523 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:09:46,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:09:46,607 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-16 12:09:46,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:09:46,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-16 12:09:46,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:46,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:46,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:09:47,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:47,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599980931] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:09:47,132 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:09:47,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2022-11-16 12:09:47,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602487361] [2022-11-16 12:09:47,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:09:47,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:09:47,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:47,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:09:47,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:09:47,134 INFO L87 Difference]: Start difference. First operand 84 states and 192 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:48,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:48,168 INFO L93 Difference]: Finished difference Result 168 states and 314 transitions. [2022-11-16 12:09:48,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:09:48,168 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-16 12:09:48,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:48,169 INFO L225 Difference]: With dead ends: 168 [2022-11-16 12:09:48,169 INFO L226 Difference]: Without dead ends: 136 [2022-11-16 12:09:48,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=224, Invalid=898, Unknown=0, NotChecked=0, Total=1122 [2022-11-16 12:09:48,171 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 118 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:48,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 18 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:09:48,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-11-16 12:09:48,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 78. [2022-11-16 12:09:48,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 2.324675324675325) internal successors, (179), 77 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:48,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 179 transitions. [2022-11-16 12:09:48,179 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 179 transitions. Word has length 14 [2022-11-16 12:09:48,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:48,179 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 179 transitions. [2022-11-16 12:09:48,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:48,180 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 179 transitions. [2022-11-16 12:09:48,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 12:09:48,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:48,180 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:48,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:48,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 12:09:48,386 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:09:48,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:48,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1085249289, now seen corresponding path program 7 times [2022-11-16 12:09:48,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:48,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459453828] [2022-11-16 12:09:48,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:48,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:48,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:48,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:48,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459453828] [2022-11-16 12:09:48,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459453828] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:09:48,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477330483] [2022-11-16 12:09:48,649 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 12:09:48,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:48,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:09:48,651 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:09:48,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:09:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:48,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-16 12:09:48,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:48,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:48,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:09:49,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:49,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477330483] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:09:49,219 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:09:49,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2022-11-16 12:09:49,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167722230] [2022-11-16 12:09:49,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:09:49,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:09:49,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:49,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:09:49,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:09:49,222 INFO L87 Difference]: Start difference. First operand 78 states and 179 transitions. Second operand has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:49,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:49,899 INFO L93 Difference]: Finished difference Result 149 states and 282 transitions. [2022-11-16 12:09:49,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:09:49,899 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-16 12:09:49,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:49,900 INFO L225 Difference]: With dead ends: 149 [2022-11-16 12:09:49,901 INFO L226 Difference]: Without dead ends: 134 [2022-11-16 12:09:49,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=729, Unknown=0, NotChecked=0, Total=930 [2022-11-16 12:09:49,902 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 106 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:49,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 9 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:09:49,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-16 12:09:49,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 72. [2022-11-16 12:09:49,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 2.2253521126760565) internal successors, (158), 71 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:49,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 158 transitions. [2022-11-16 12:09:49,907 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 158 transitions. Word has length 14 [2022-11-16 12:09:49,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:49,907 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 158 transitions. [2022-11-16 12:09:49,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:49,907 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 158 transitions. [2022-11-16 12:09:49,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 12:09:49,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:49,908 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:49,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-16 12:09:50,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 12:09:50,113 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:09:50,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:50,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1086438581, now seen corresponding path program 8 times [2022-11-16 12:09:50,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:50,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109638252] [2022-11-16 12:09:50,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:50,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:50,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:50,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:50,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:50,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109638252] [2022-11-16 12:09:50,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109638252] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:09:50,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273342302] [2022-11-16 12:09:50,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:09:50,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:50,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:09:50,338 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:09:50,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:09:50,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:09:50,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:09:50,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-16 12:09:50,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:50,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:50,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:09:50,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:50,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273342302] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:09:50,880 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:09:50,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2022-11-16 12:09:50,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356222044] [2022-11-16 12:09:50,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:09:50,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:09:50,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:50,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:09:50,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:09:50,882 INFO L87 Difference]: Start difference. First operand 72 states and 158 transitions. Second operand has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:51,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:51,262 INFO L93 Difference]: Finished difference Result 108 states and 214 transitions. [2022-11-16 12:09:51,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:09:51,262 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-16 12:09:51,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:51,263 INFO L225 Difference]: With dead ends: 108 [2022-11-16 12:09:51,263 INFO L226 Difference]: Without dead ends: 98 [2022-11-16 12:09:51,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=142, Invalid=458, Unknown=0, NotChecked=0, Total=600 [2022-11-16 12:09:51,265 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 54 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:51,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 15 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:09:51,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-16 12:09:51,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 70. [2022-11-16 12:09:51,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 2.217391304347826) internal successors, (153), 69 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:51,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 153 transitions. [2022-11-16 12:09:51,268 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 153 transitions. Word has length 14 [2022-11-16 12:09:51,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:51,269 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 153 transitions. [2022-11-16 12:09:51,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:51,269 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 153 transitions. [2022-11-16 12:09:51,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 12:09:51,270 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:51,270 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:51,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:51,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:51,476 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:09:51,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:51,476 INFO L85 PathProgramCache]: Analyzing trace with hash 956801111, now seen corresponding path program 9 times [2022-11-16 12:09:51,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:51,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412119026] [2022-11-16 12:09:51,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:51,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:51,740 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:09:51,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:51,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412119026] [2022-11-16 12:09:51,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412119026] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:09:51,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15258832] [2022-11-16 12:09:51,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:09:51,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:51,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:09:51,742 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:09:51,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:09:51,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 12:09:51,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:09:51,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 12:09:51,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:52,096 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:52,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:09:52,409 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:52,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15258832] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:09:52,409 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:09:52,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 22 [2022-11-16 12:09:52,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788332453] [2022-11-16 12:09:52,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:09:52,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 12:09:52,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:52,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 12:09:52,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:09:52,411 INFO L87 Difference]: Start difference. First operand 70 states and 153 transitions. Second operand has 24 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:53,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:53,989 INFO L93 Difference]: Finished difference Result 217 states and 435 transitions. [2022-11-16 12:09:53,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-16 12:09:53,990 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-16 12:09:53,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:53,991 INFO L225 Difference]: With dead ends: 217 [2022-11-16 12:09:53,992 INFO L226 Difference]: Without dead ends: 197 [2022-11-16 12:09:53,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=496, Invalid=1666, Unknown=0, NotChecked=0, Total=2162 [2022-11-16 12:09:53,994 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 284 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:53,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 76 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 12:09:53,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-11-16 12:09:53,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 78. [2022-11-16 12:09:53,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 2.2467532467532467) internal successors, (173), 77 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:53,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 173 transitions. [2022-11-16 12:09:53,999 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 173 transitions. Word has length 16 [2022-11-16 12:09:54,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:54,000 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 173 transitions. [2022-11-16 12:09:54,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:54,000 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 173 transitions. [2022-11-16 12:09:54,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 12:09:54,001 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:54,001 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:54,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:54,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:54,206 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:09:54,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:54,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1500973019, now seen corresponding path program 10 times [2022-11-16 12:09:54,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:54,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429030143] [2022-11-16 12:09:54,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:54,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:54,451 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:09:54,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:54,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429030143] [2022-11-16 12:09:54,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429030143] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:09:54,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650205051] [2022-11-16 12:09:54,452 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 12:09:54,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:54,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:09:54,453 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:09:54,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 12:09:54,544 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 12:09:54,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:09:54,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 12:09:54,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:54,791 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:54,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:09:55,122 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:55,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650205051] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:09:55,122 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:09:55,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 22 [2022-11-16 12:09:55,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284238245] [2022-11-16 12:09:55,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:09:55,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 12:09:55,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:55,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 12:09:55,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:09:55,124 INFO L87 Difference]: Start difference. First operand 78 states and 173 transitions. Second operand has 24 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:57,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:57,093 INFO L93 Difference]: Finished difference Result 339 states and 688 transitions. [2022-11-16 12:09:57,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-16 12:09:57,094 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-16 12:09:57,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:57,101 INFO L225 Difference]: With dead ends: 339 [2022-11-16 12:09:57,101 INFO L226 Difference]: Without dead ends: 319 [2022-11-16 12:09:57,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 975 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=727, Invalid=2465, Unknown=0, NotChecked=0, Total=3192 [2022-11-16 12:09:57,103 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 345 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:57,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 32 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 12:09:57,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-11-16 12:09:57,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 90. [2022-11-16 12:09:57,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 2.4831460674157304) internal successors, (221), 89 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:57,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 221 transitions. [2022-11-16 12:09:57,111 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 221 transitions. Word has length 16 [2022-11-16 12:09:57,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:57,112 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 221 transitions. [2022-11-16 12:09:57,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:57,113 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 221 transitions. [2022-11-16 12:09:57,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 12:09:57,113 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:57,113 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:57,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-11-16 12:09:57,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:57,319 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:09:57,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:57,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1409697239, now seen corresponding path program 11 times [2022-11-16 12:09:57,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:57,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331449698] [2022-11-16 12:09:57,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:57,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:57,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:57,560 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:09:57,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:57,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331449698] [2022-11-16 12:09:57,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331449698] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:09:57,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234107758] [2022-11-16 12:09:57,561 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 12:09:57,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:57,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:09:57,563 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:09:57,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 12:09:57,645 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-16 12:09:57,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:09:57,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 12:09:57,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:57,917 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:57,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:09:58,229 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:58,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234107758] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:09:58,230 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:09:58,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 22 [2022-11-16 12:09:58,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695717299] [2022-11-16 12:09:58,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:09:58,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 12:09:58,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:58,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 12:09:58,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:09:58,232 INFO L87 Difference]: Start difference. First operand 90 states and 221 transitions. Second operand has 24 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:00,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:00,277 INFO L93 Difference]: Finished difference Result 324 states and 653 transitions. [2022-11-16 12:10:00,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-16 12:10:00,277 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-16 12:10:00,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:00,279 INFO L225 Difference]: With dead ends: 324 [2022-11-16 12:10:00,279 INFO L226 Difference]: Without dead ends: 304 [2022-11-16 12:10:00,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1139 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=796, Invalid=2744, Unknown=0, NotChecked=0, Total=3540 [2022-11-16 12:10:00,281 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 387 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:10:00,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 56 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 12:10:00,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-11-16 12:10:00,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 88. [2022-11-16 12:10:00,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.4367816091954024) internal successors, (212), 87 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:00,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 212 transitions. [2022-11-16 12:10:00,287 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 212 transitions. Word has length 16 [2022-11-16 12:10:00,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:00,288 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 212 transitions. [2022-11-16 12:10:00,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:00,288 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 212 transitions. [2022-11-16 12:10:00,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 12:10:00,289 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:00,289 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:00,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:00,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-16 12:10:00,490 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:10:00,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:00,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1646089268, now seen corresponding path program 1 times [2022-11-16 12:10:00,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:00,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856154970] [2022-11-16 12:10:00,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:00,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:00,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:00,699 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:00,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:00,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856154970] [2022-11-16 12:10:00,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856154970] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:10:00,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418266678] [2022-11-16 12:10:00,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:00,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:00,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:00,701 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:00,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 12:10:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:00,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-16 12:10:00,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:00,973 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:00,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:10:01,153 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:10:01,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418266678] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:10:01,154 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:10:01,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2022-11-16 12:10:01,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77557238] [2022-11-16 12:10:01,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:10:01,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:10:01,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:01,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:10:01,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:10:01,158 INFO L87 Difference]: Start difference. First operand 88 states and 212 transitions. Second operand has 19 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:01,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:01,696 INFO L93 Difference]: Finished difference Result 169 states and 355 transitions. [2022-11-16 12:10:01,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:10:01,697 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-16 12:10:01,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:01,697 INFO L225 Difference]: With dead ends: 169 [2022-11-16 12:10:01,698 INFO L226 Difference]: Without dead ends: 108 [2022-11-16 12:10:01,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=822, Unknown=0, NotChecked=0, Total=992 [2022-11-16 12:10:01,698 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 152 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:10:01,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 36 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:10:01,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-16 12:10:01,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 76. [2022-11-16 12:10:01,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 2.4266666666666667) internal successors, (182), 75 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:01,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 182 transitions. [2022-11-16 12:10:01,703 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 182 transitions. Word has length 16 [2022-11-16 12:10:01,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:01,703 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 182 transitions. [2022-11-16 12:10:01,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:01,704 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 182 transitions. [2022-11-16 12:10:01,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 12:10:01,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:01,704 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:01,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-16 12:10:01,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-16 12:10:01,909 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:10:01,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:01,909 INFO L85 PathProgramCache]: Analyzing trace with hash -527675970, now seen corresponding path program 2 times [2022-11-16 12:10:01,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:01,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924489431] [2022-11-16 12:10:01,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:01,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:02,118 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:02,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:02,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924489431] [2022-11-16 12:10:02,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924489431] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:10:02,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102838681] [2022-11-16 12:10:02,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:10:02,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:02,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:02,121 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:02,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 12:10:02,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:10:02,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:10:02,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-16 12:10:02,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:02,425 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:02,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:10:02,620 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:10:02,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102838681] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:10:02,621 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:10:02,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2022-11-16 12:10:02,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040570689] [2022-11-16 12:10:02,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:10:02,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:10:02,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:02,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:10:02,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:10:02,623 INFO L87 Difference]: Start difference. First operand 76 states and 182 transitions. Second operand has 20 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:03,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:03,263 INFO L93 Difference]: Finished difference Result 201 states and 429 transitions. [2022-11-16 12:10:03,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:10:03,264 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-16 12:10:03,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:03,265 INFO L225 Difference]: With dead ends: 201 [2022-11-16 12:10:03,265 INFO L226 Difference]: Without dead ends: 154 [2022-11-16 12:10:03,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=204, Invalid=986, Unknown=0, NotChecked=0, Total=1190 [2022-11-16 12:10:03,267 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 148 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:10:03,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 20 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:10:03,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-11-16 12:10:03,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 92. [2022-11-16 12:10:03,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 2.5604395604395602) internal successors, (233), 91 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:03,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 233 transitions. [2022-11-16 12:10:03,272 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 233 transitions. Word has length 16 [2022-11-16 12:10:03,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:03,272 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 233 transitions. [2022-11-16 12:10:03,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:03,273 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 233 transitions. [2022-11-16 12:10:03,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 12:10:03,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:03,274 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:03,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:03,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:03,479 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:10:03,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:03,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1686518749, now seen corresponding path program 12 times [2022-11-16 12:10:03,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:03,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879516522] [2022-11-16 12:10:03,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:03,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:03,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:03,682 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:03,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:03,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879516522] [2022-11-16 12:10:03,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879516522] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:10:03,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894014706] [2022-11-16 12:10:03,683 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 12:10:03,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:03,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:03,685 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:03,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 12:10:03,775 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-16 12:10:03,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:10:03,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 12:10:03,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:04,036 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:04,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:10:04,394 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:04,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894014706] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:10:04,394 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:10:04,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 22 [2022-11-16 12:10:04,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290969544] [2022-11-16 12:10:04,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:10:04,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 12:10:04,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:04,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 12:10:04,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:10:04,396 INFO L87 Difference]: Start difference. First operand 92 states and 233 transitions. Second operand has 24 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:06,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:06,019 INFO L93 Difference]: Finished difference Result 270 states and 577 transitions. [2022-11-16 12:10:06,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-16 12:10:06,020 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-16 12:10:06,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:06,022 INFO L225 Difference]: With dead ends: 270 [2022-11-16 12:10:06,022 INFO L226 Difference]: Without dead ends: 228 [2022-11-16 12:10:06,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=609, Invalid=2253, Unknown=0, NotChecked=0, Total=2862 [2022-11-16 12:10:06,023 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 266 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:10:06,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 36 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 12:10:06,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-11-16 12:10:06,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 98. [2022-11-16 12:10:06,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 2.4329896907216493) internal successors, (236), 97 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:06,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 236 transitions. [2022-11-16 12:10:06,039 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 236 transitions. Word has length 16 [2022-11-16 12:10:06,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:06,039 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 236 transitions. [2022-11-16 12:10:06,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:06,040 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 236 transitions. [2022-11-16 12:10:06,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 12:10:06,041 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:06,041 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:06,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:06,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-16 12:10:06,247 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:10:06,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:06,247 INFO L85 PathProgramCache]: Analyzing trace with hash -873920382, now seen corresponding path program 3 times [2022-11-16 12:10:06,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:06,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574889783] [2022-11-16 12:10:06,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:06,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:06,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:06,451 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:06,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:06,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574889783] [2022-11-16 12:10:06,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574889783] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:10:06,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109098100] [2022-11-16 12:10:06,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:10:06,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:06,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:06,468 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:06,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 12:10:06,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 12:10:06,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:10:06,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-16 12:10:06,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:06,745 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:06,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:10:06,919 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:06,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109098100] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:10:06,919 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:10:06,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2022-11-16 12:10:06,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764419146] [2022-11-16 12:10:06,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:10:06,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:10:06,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:06,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:10:06,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:10:06,922 INFO L87 Difference]: Start difference. First operand 98 states and 236 transitions. Second operand has 20 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:07,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:07,662 INFO L93 Difference]: Finished difference Result 225 states and 461 transitions. [2022-11-16 12:10:07,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:10:07,663 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-16 12:10:07,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:07,664 INFO L225 Difference]: With dead ends: 225 [2022-11-16 12:10:07,664 INFO L226 Difference]: Without dead ends: 206 [2022-11-16 12:10:07,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=207, Invalid=785, Unknown=0, NotChecked=0, Total=992 [2022-11-16 12:10:07,665 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 134 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:10:07,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 13 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:10:07,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-11-16 12:10:07,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 112. [2022-11-16 12:10:07,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.5585585585585586) internal successors, (284), 111 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:07,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 284 transitions. [2022-11-16 12:10:07,688 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 284 transitions. Word has length 16 [2022-11-16 12:10:07,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:07,688 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 284 transitions. [2022-11-16 12:10:07,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:07,688 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 284 transitions. [2022-11-16 12:10:07,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 12:10:07,689 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:07,689 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:07,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:07,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:07,889 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:10:07,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:07,890 INFO L85 PathProgramCache]: Analyzing trace with hash -782644602, now seen corresponding path program 4 times [2022-11-16 12:10:07,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:07,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793338420] [2022-11-16 12:10:07,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:07,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:07,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:08,109 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:08,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:08,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793338420] [2022-11-16 12:10:08,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793338420] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:10:08,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538933390] [2022-11-16 12:10:08,110 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 12:10:08,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:08,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:08,111 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:08,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 12:10:08,201 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 12:10:08,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:10:08,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-16 12:10:08,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:08,390 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:08,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:10:08,572 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:08,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538933390] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:10:08,572 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:10:08,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2022-11-16 12:10:08,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987271203] [2022-11-16 12:10:08,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:10:08,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:10:08,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:08,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:10:08,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:10:08,574 INFO L87 Difference]: Start difference. First operand 112 states and 284 transitions. Second operand has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:09,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:09,237 INFO L93 Difference]: Finished difference Result 211 states and 439 transitions. [2022-11-16 12:10:09,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:10:09,238 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-16 12:10:09,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:09,239 INFO L225 Difference]: With dead ends: 211 [2022-11-16 12:10:09,239 INFO L226 Difference]: Without dead ends: 196 [2022-11-16 12:10:09,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=207, Invalid=785, Unknown=0, NotChecked=0, Total=992 [2022-11-16 12:10:09,240 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 127 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:10:09,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 14 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:10:09,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-11-16 12:10:09,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 112. [2022-11-16 12:10:09,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.5585585585585586) internal successors, (284), 111 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:09,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 284 transitions. [2022-11-16 12:10:09,246 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 284 transitions. Word has length 16 [2022-11-16 12:10:09,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:09,247 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 284 transitions. [2022-11-16 12:10:09,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:09,247 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 284 transitions. [2022-11-16 12:10:09,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 12:10:09,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:09,248 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:09,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:09,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-16 12:10:09,453 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:10:09,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:09,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1436484610, now seen corresponding path program 5 times [2022-11-16 12:10:09,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:09,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835497038] [2022-11-16 12:10:09,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:09,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:09,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:09,646 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:09,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:09,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835497038] [2022-11-16 12:10:09,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835497038] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:10:09,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902582568] [2022-11-16 12:10:09,647 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 12:10:09,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:09,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:09,649 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:09,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-16 12:10:09,746 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:10:09,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:10:09,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-16 12:10:09,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:09,909 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:09,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:10:10,098 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:10:10,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902582568] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:10:10,098 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:10:10,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2022-11-16 12:10:10,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071787166] [2022-11-16 12:10:10,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:10:10,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:10:10,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:10,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:10:10,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:10:10,100 INFO L87 Difference]: Start difference. First operand 112 states and 284 transitions. Second operand has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:10,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:10,811 INFO L93 Difference]: Finished difference Result 223 states and 489 transitions. [2022-11-16 12:10:10,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 12:10:10,811 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-16 12:10:10,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:10,813 INFO L225 Difference]: With dead ends: 223 [2022-11-16 12:10:10,813 INFO L226 Difference]: Without dead ends: 168 [2022-11-16 12:10:10,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=211, Invalid=911, Unknown=0, NotChecked=0, Total=1122 [2022-11-16 12:10:10,814 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 89 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:10:10,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 9 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:10:10,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-16 12:10:10,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 90. [2022-11-16 12:10:10,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 2.393258426966292) internal successors, (213), 89 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:10,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 213 transitions. [2022-11-16 12:10:10,820 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 213 transitions. Word has length 16 [2022-11-16 12:10:10,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:10,821 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 213 transitions. [2022-11-16 12:10:10,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:10,821 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 213 transitions. [2022-11-16 12:10:10,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 12:10:10,822 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:10,822 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:10,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:11,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-16 12:10:11,027 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:10:11,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:11,028 INFO L85 PathProgramCache]: Analyzing trace with hash -916660677, now seen corresponding path program 13 times [2022-11-16 12:10:11,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:11,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138200801] [2022-11-16 12:10:11,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:11,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:11,239 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:10:11,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:11,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138200801] [2022-11-16 12:10:11,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138200801] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:10:11,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337688360] [2022-11-16 12:10:11,240 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 12:10:11,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:11,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:11,241 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:11,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-16 12:10:11,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:11,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 12:10:11,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:11,570 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:11,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:10:11,868 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:11,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337688360] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:10:11,868 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:10:11,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 22 [2022-11-16 12:10:11,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424666157] [2022-11-16 12:10:11,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:10:11,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 12:10:11,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:11,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 12:10:11,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:10:11,871 INFO L87 Difference]: Start difference. First operand 90 states and 213 transitions. Second operand has 24 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:12,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:12,482 INFO L93 Difference]: Finished difference Result 127 states and 265 transitions. [2022-11-16 12:10:12,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:10:12,483 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-16 12:10:12,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:12,484 INFO L225 Difference]: With dead ends: 127 [2022-11-16 12:10:12,484 INFO L226 Difference]: Without dead ends: 98 [2022-11-16 12:10:12,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=262, Invalid=998, Unknown=0, NotChecked=0, Total=1260 [2022-11-16 12:10:12,485 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 106 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:10:12,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 28 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:10:12,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-16 12:10:12,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 88. [2022-11-16 12:10:12,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.3908045977011496) internal successors, (208), 87 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:12,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 208 transitions. [2022-11-16 12:10:12,489 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 208 transitions. Word has length 16 [2022-11-16 12:10:12,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:12,489 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 208 transitions. [2022-11-16 12:10:12,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:12,489 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 208 transitions. [2022-11-16 12:10:12,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 12:10:12,490 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:12,490 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:12,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:12,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-16 12:10:12,700 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:10:12,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:12,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1682557147, now seen corresponding path program 14 times [2022-11-16 12:10:12,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:12,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057158604] [2022-11-16 12:10:12,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:12,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:12,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:12,957 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:10:12,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:12,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057158604] [2022-11-16 12:10:12,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057158604] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:10:12,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846800275] [2022-11-16 12:10:12,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:10:12,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:12,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:12,959 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:12,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-16 12:10:13,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:10:13,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:10:13,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 12:10:13,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:13,326 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:13,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:10:13,686 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:13,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846800275] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:10:13,687 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:10:13,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 22 [2022-11-16 12:10:13,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314127145] [2022-11-16 12:10:13,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:10:13,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 12:10:13,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:13,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 12:10:13,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:10:13,688 INFO L87 Difference]: Start difference. First operand 88 states and 208 transitions. Second operand has 24 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:15,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:15,635 INFO L93 Difference]: Finished difference Result 230 states and 477 transitions. [2022-11-16 12:10:15,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 12:10:15,636 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-16 12:10:15,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:15,637 INFO L225 Difference]: With dead ends: 230 [2022-11-16 12:10:15,638 INFO L226 Difference]: Without dead ends: 205 [2022-11-16 12:10:15,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=518, Invalid=2032, Unknown=0, NotChecked=0, Total=2550 [2022-11-16 12:10:15,639 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 295 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:10:15,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 18 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:10:15,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-11-16 12:10:15,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 104. [2022-11-16 12:10:15,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.6116504854368934) internal successors, (269), 103 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:15,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 269 transitions. [2022-11-16 12:10:15,645 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 269 transitions. Word has length 16 [2022-11-16 12:10:15,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:15,646 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 269 transitions. [2022-11-16 12:10:15,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:15,646 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 269 transitions. [2022-11-16 12:10:15,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 12:10:15,647 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:15,647 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:15,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:15,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:15,852 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:10:15,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:15,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1591281367, now seen corresponding path program 15 times [2022-11-16 12:10:15,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:15,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418335540] [2022-11-16 12:10:15,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:15,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:15,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:16,095 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:10:16,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:16,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418335540] [2022-11-16 12:10:16,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418335540] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:10:16,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747122060] [2022-11-16 12:10:16,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:10:16,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:16,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:16,099 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:16,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-16 12:10:16,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 12:10:16,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:10:16,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 12:10:16,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:16,478 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:16,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:10:16,823 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:16,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747122060] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:10:16,824 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:10:16,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 22 [2022-11-16 12:10:16,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267170300] [2022-11-16 12:10:16,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:10:16,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 12:10:16,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:16,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 12:10:16,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:10:16,827 INFO L87 Difference]: Start difference. First operand 104 states and 269 transitions. Second operand has 24 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:18,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:18,897 INFO L93 Difference]: Finished difference Result 251 states and 504 transitions. [2022-11-16 12:10:18,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-16 12:10:18,897 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-16 12:10:18,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:18,901 INFO L225 Difference]: With dead ends: 251 [2022-11-16 12:10:18,901 INFO L226 Difference]: Without dead ends: 226 [2022-11-16 12:10:18,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 817 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=609, Invalid=2361, Unknown=0, NotChecked=0, Total=2970 [2022-11-16 12:10:18,902 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 299 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:10:18,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 9 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 12:10:18,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-11-16 12:10:18,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 104. [2022-11-16 12:10:18,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.6116504854368934) internal successors, (269), 103 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:18,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 269 transitions. [2022-11-16 12:10:18,908 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 269 transitions. Word has length 16 [2022-11-16 12:10:18,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:18,909 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 269 transitions. [2022-11-16 12:10:18,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:18,909 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 269 transitions. [2022-11-16 12:10:18,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 12:10:18,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:18,910 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:18,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:19,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:19,116 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:10:19,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:19,116 INFO L85 PathProgramCache]: Analyzing trace with hash -431249296, now seen corresponding path program 6 times [2022-11-16 12:10:19,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:19,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684382454] [2022-11-16 12:10:19,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:19,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:19,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:19,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:19,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:19,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684382454] [2022-11-16 12:10:19,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684382454] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:10:19,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117942170] [2022-11-16 12:10:19,305 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 12:10:19,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:19,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:19,318 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:19,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-16 12:10:19,415 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-16 12:10:19,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:10:19,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-16 12:10:19,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:19,596 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:19,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:10:19,770 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:10:19,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117942170] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:10:19,771 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:10:19,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2022-11-16 12:10:19,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763333433] [2022-11-16 12:10:19,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:10:19,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:10:19,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:19,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:10:19,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:10:19,772 INFO L87 Difference]: Start difference. First operand 104 states and 269 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:20,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:20,444 INFO L93 Difference]: Finished difference Result 171 states and 369 transitions. [2022-11-16 12:10:20,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 12:10:20,451 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-16 12:10:20,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:20,452 INFO L225 Difference]: With dead ends: 171 [2022-11-16 12:10:20,452 INFO L226 Difference]: Without dead ends: 124 [2022-11-16 12:10:20,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=204, Invalid=918, Unknown=0, NotChecked=0, Total=1122 [2022-11-16 12:10:20,453 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 103 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:10:20,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 14 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:10:20,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-11-16 12:10:20,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 92. [2022-11-16 12:10:20,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 2.5274725274725274) internal successors, (230), 91 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:20,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 230 transitions. [2022-11-16 12:10:20,458 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 230 transitions. Word has length 16 [2022-11-16 12:10:20,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:20,459 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 230 transitions. [2022-11-16 12:10:20,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:20,459 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 230 transitions. [2022-11-16 12:10:20,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 12:10:20,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:20,460 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:20,465 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-11-16 12:10:20,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-11-16 12:10:20,665 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:10:20,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:20,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1590092075, now seen corresponding path program 16 times [2022-11-16 12:10:20,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:20,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274213032] [2022-11-16 12:10:20,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:20,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:20,869 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:20,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:20,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274213032] [2022-11-16 12:10:20,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274213032] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:10:20,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553851781] [2022-11-16 12:10:20,870 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 12:10:20,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:20,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:20,871 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:20,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-16 12:10:20,961 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 12:10:20,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:10:20,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 12:10:20,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:21,233 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:21,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:10:21,555 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:21,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553851781] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:10:21,555 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:10:21,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 22 [2022-11-16 12:10:21,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57416637] [2022-11-16 12:10:21,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:10:21,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 12:10:21,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:21,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 12:10:21,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:10:21,557 INFO L87 Difference]: Start difference. First operand 92 states and 230 transitions. Second operand has 24 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:22,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:22,910 INFO L93 Difference]: Finished difference Result 170 states and 364 transitions. [2022-11-16 12:10:22,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 12:10:22,910 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-16 12:10:22,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:22,911 INFO L225 Difference]: With dead ends: 170 [2022-11-16 12:10:22,911 INFO L226 Difference]: Without dead ends: 128 [2022-11-16 12:10:22,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=475, Invalid=1975, Unknown=0, NotChecked=0, Total=2450 [2022-11-16 12:10:22,913 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 151 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:10:22,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 10 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:10:22,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-11-16 12:10:22,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 96. [2022-11-16 12:10:22,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 2.5052631578947366) internal successors, (238), 95 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:22,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 238 transitions. [2022-11-16 12:10:22,917 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 238 transitions. Word has length 16 [2022-11-16 12:10:22,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:22,918 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 238 transitions. [2022-11-16 12:10:22,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:22,918 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 238 transitions. [2022-11-16 12:10:22,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 12:10:22,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:22,919 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:22,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:23,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:23,125 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:10:23,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:23,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1193169208, now seen corresponding path program 7 times [2022-11-16 12:10:23,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:23,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302242399] [2022-11-16 12:10:23,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:23,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:23,354 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:23,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:23,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302242399] [2022-11-16 12:10:23,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302242399] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:10:23,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882170082] [2022-11-16 12:10:23,354 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 12:10:23,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:23,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:23,356 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:23,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-16 12:10:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:23,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 12:10:23,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:23,652 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:23,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:10:23,852 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:10:23,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882170082] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:10:23,852 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:10:23,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 20 [2022-11-16 12:10:23,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251812827] [2022-11-16 12:10:23,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:10:23,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 12:10:23,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:23,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 12:10:23,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2022-11-16 12:10:23,853 INFO L87 Difference]: Start difference. First operand 96 states and 238 transitions. Second operand has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:24,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:24,425 INFO L93 Difference]: Finished difference Result 156 states and 347 transitions. [2022-11-16 12:10:24,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:10:24,425 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-16 12:10:24,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:24,426 INFO L225 Difference]: With dead ends: 156 [2022-11-16 12:10:24,427 INFO L226 Difference]: Without dead ends: 138 [2022-11-16 12:10:24,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=222, Invalid=1038, Unknown=0, NotChecked=0, Total=1260 [2022-11-16 12:10:24,428 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 131 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:10:24,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 16 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:10:24,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-11-16 12:10:24,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 112. [2022-11-16 12:10:24,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.5585585585585586) internal successors, (284), 111 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:24,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 284 transitions. [2022-11-16 12:10:24,433 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 284 transitions. Word has length 17 [2022-11-16 12:10:24,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:24,433 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 284 transitions. [2022-11-16 12:10:24,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:24,433 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 284 transitions. [2022-11-16 12:10:24,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 12:10:24,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:24,434 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:24,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:24,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-16 12:10:24,640 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:10:24,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:24,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1101893428, now seen corresponding path program 8 times [2022-11-16 12:10:24,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:24,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438677737] [2022-11-16 12:10:24,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:24,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:24,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:24,864 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:24,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:24,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438677737] [2022-11-16 12:10:24,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438677737] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:10:24,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201506814] [2022-11-16 12:10:24,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:10:24,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:24,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:24,866 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:24,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-16 12:10:24,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:10:24,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:10:24,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 12:10:24,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:25,189 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:25,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:10:25,377 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:10:25,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201506814] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:10:25,378 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:10:25,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 20 [2022-11-16 12:10:25,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251292122] [2022-11-16 12:10:25,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:10:25,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 12:10:25,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:25,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 12:10:25,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2022-11-16 12:10:25,380 INFO L87 Difference]: Start difference. First operand 112 states and 284 transitions. Second operand has 22 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:26,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:26,043 INFO L93 Difference]: Finished difference Result 136 states and 319 transitions. [2022-11-16 12:10:26,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:10:26,044 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-16 12:10:26,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:26,045 INFO L225 Difference]: With dead ends: 136 [2022-11-16 12:10:26,045 INFO L226 Difference]: Without dead ends: 126 [2022-11-16 12:10:26,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=248, Invalid=1158, Unknown=0, NotChecked=0, Total=1406 [2022-11-16 12:10:26,047 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 115 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:10:26,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 21 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:10:26,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-11-16 12:10:26,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 100. [2022-11-16 12:10:26,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 2.5353535353535355) internal successors, (251), 99 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:26,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 251 transitions. [2022-11-16 12:10:26,051 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 251 transitions. Word has length 17 [2022-11-16 12:10:26,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:26,052 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 251 transitions. [2022-11-16 12:10:26,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:26,052 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 251 transitions. [2022-11-16 12:10:26,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 12:10:26,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:26,053 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:26,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:26,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:26,258 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:10:26,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:26,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1885451241, now seen corresponding path program 9 times [2022-11-16 12:10:26,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:26,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051343408] [2022-11-16 12:10:26,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:26,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:26,454 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:26,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:26,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051343408] [2022-11-16 12:10:26,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051343408] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:10:26,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445648529] [2022-11-16 12:10:26,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:10:26,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:26,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:26,459 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:26,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-16 12:10:26,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 12:10:26,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:10:26,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 12:10:26,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:26,762 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:26,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:10:26,911 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:26,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445648529] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:10:26,911 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:10:26,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 7] total 18 [2022-11-16 12:10:26,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388391791] [2022-11-16 12:10:26,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:10:26,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:10:26,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:26,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:10:26,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:10:26,913 INFO L87 Difference]: Start difference. First operand 100 states and 251 transitions. Second operand has 20 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:27,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:27,582 INFO L93 Difference]: Finished difference Result 144 states and 315 transitions. [2022-11-16 12:10:27,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 12:10:27,583 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-16 12:10:27,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:27,584 INFO L225 Difference]: With dead ends: 144 [2022-11-16 12:10:27,584 INFO L226 Difference]: Without dead ends: 86 [2022-11-16 12:10:27,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=204, Invalid=918, Unknown=0, NotChecked=0, Total=1122 [2022-11-16 12:10:27,585 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 75 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:10:27,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 23 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:10:27,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-16 12:10:27,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 72. [2022-11-16 12:10:27,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 2.2816901408450705) internal successors, (162), 71 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:27,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 162 transitions. [2022-11-16 12:10:27,587 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 162 transitions. Word has length 17 [2022-11-16 12:10:27,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:27,587 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 162 transitions. [2022-11-16 12:10:27,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:27,588 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 162 transitions. [2022-11-16 12:10:27,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 12:10:27,588 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:27,588 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:27,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-11-16 12:10:27,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-16 12:10:27,790 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:10:27,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:27,791 INFO L85 PathProgramCache]: Analyzing trace with hash 698534024, now seen corresponding path program 10 times [2022-11-16 12:10:27,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:27,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17661276] [2022-11-16 12:10:27,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:27,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:27,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:28,019 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:28,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:28,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17661276] [2022-11-16 12:10:28,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17661276] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:10:28,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833736675] [2022-11-16 12:10:28,021 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 12:10:28,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:28,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:28,026 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:28,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-16 12:10:28,130 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 12:10:28,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:10:28,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 12:10:28,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:28,329 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:28,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:10:28,543 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:10:28,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833736675] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:10:28,543 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:10:28,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 20 [2022-11-16 12:10:28,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219878409] [2022-11-16 12:10:28,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:10:28,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 12:10:28,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:28,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 12:10:28,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2022-11-16 12:10:28,545 INFO L87 Difference]: Start difference. First operand 72 states and 162 transitions. Second operand has 22 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 21 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:29,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:29,083 INFO L93 Difference]: Finished difference Result 108 states and 205 transitions. [2022-11-16 12:10:29,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:10:29,083 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 21 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-16 12:10:29,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:29,084 INFO L225 Difference]: With dead ends: 108 [2022-11-16 12:10:29,084 INFO L226 Difference]: Without dead ends: 90 [2022-11-16 12:10:29,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=194, Invalid=798, Unknown=0, NotChecked=0, Total=992 [2022-11-16 12:10:29,085 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 92 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:10:29,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 6 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:10:29,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-11-16 12:10:29,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 76. [2022-11-16 12:10:29,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 2.2133333333333334) internal successors, (166), 75 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:29,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 166 transitions. [2022-11-16 12:10:29,089 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 166 transitions. Word has length 17 [2022-11-16 12:10:29,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:29,090 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 166 transitions. [2022-11-16 12:10:29,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 21 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:29,090 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 166 transitions. [2022-11-16 12:10:29,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 12:10:29,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:29,091 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:29,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:29,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-16 12:10:29,294 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:10:29,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:29,295 INFO L85 PathProgramCache]: Analyzing trace with hash 789809804, now seen corresponding path program 11 times [2022-11-16 12:10:29,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:29,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789627648] [2022-11-16 12:10:29,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:29,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:29,519 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:29,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:29,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789627648] [2022-11-16 12:10:29,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789627648] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:10:29,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742947084] [2022-11-16 12:10:29,520 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 12:10:29,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:29,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:29,521 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:29,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-16 12:10:29,611 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-16 12:10:29,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:10:29,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-16 12:10:29,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:29,862 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:29,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:10:30,213 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:30,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742947084] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:10:30,214 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:10:30,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2022-11-16 12:10:30,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884266559] [2022-11-16 12:10:30,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:10:30,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-16 12:10:30,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:30,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-16 12:10:30,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=562, Unknown=0, NotChecked=0, Total=702 [2022-11-16 12:10:30,216 INFO L87 Difference]: Start difference. First operand 76 states and 166 transitions. Second operand has 27 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:30,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:30,824 INFO L93 Difference]: Finished difference Result 90 states and 180 transitions. [2022-11-16 12:10:30,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:10:30,824 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-16 12:10:30,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:30,825 INFO L225 Difference]: With dead ends: 90 [2022-11-16 12:10:30,825 INFO L226 Difference]: Without dead ends: 54 [2022-11-16 12:10:30,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=276, Invalid=1130, Unknown=0, NotChecked=0, Total=1406 [2022-11-16 12:10:30,826 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 97 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:10:30,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 9 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:10:30,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-16 12:10:30,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2022-11-16 12:10:30,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 2.3333333333333335) internal successors, (119), 51 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:30,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 119 transitions. [2022-11-16 12:10:30,829 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 119 transitions. Word has length 17 [2022-11-16 12:10:30,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:30,829 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 119 transitions. [2022-11-16 12:10:30,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:30,830 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 119 transitions. [2022-11-16 12:10:30,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 12:10:30,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:30,830 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:30,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:31,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-16 12:10:31,036 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:10:31,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:31,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1796057686, now seen corresponding path program 12 times [2022-11-16 12:10:31,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:31,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906352474] [2022-11-16 12:10:31,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:31,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:31,262 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:31,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:31,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906352474] [2022-11-16 12:10:31,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906352474] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:10:31,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956848312] [2022-11-16 12:10:31,263 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 12:10:31,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:31,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:31,281 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:31,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-16 12:10:31,389 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-16 12:10:31,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:10:31,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 12:10:31,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:31,567 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:31,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:10:31,750 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:10:31,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956848312] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:10:31,750 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:10:31,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 20 [2022-11-16 12:10:31,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523300899] [2022-11-16 12:10:31,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:10:31,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 12:10:31,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:31,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 12:10:31,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2022-11-16 12:10:31,752 INFO L87 Difference]: Start difference. First operand 52 states and 119 transitions. Second operand has 22 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 21 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:32,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:32,231 INFO L93 Difference]: Finished difference Result 80 states and 157 transitions. [2022-11-16 12:10:32,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:10:32,232 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 21 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-16 12:10:32,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:32,232 INFO L225 Difference]: With dead ends: 80 [2022-11-16 12:10:32,232 INFO L226 Difference]: Without dead ends: 62 [2022-11-16 12:10:32,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=201, Invalid=855, Unknown=0, NotChecked=0, Total=1056 [2022-11-16 12:10:32,234 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 149 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:10:32,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 4 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:10:32,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-16 12:10:32,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 50. [2022-11-16 12:10:32,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 2.3469387755102042) internal successors, (115), 49 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:32,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 115 transitions. [2022-11-16 12:10:32,240 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 115 transitions. Word has length 17 [2022-11-16 12:10:32,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:32,240 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 115 transitions. [2022-11-16 12:10:32,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 21 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:32,240 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 115 transitions. [2022-11-16 12:10:32,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 12:10:32,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:32,241 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:32,245 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-11-16 12:10:32,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-11-16 12:10:32,441 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:10:32,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:32,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1887333466, now seen corresponding path program 13 times [2022-11-16 12:10:32,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:32,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869078807] [2022-11-16 12:10:32,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:32,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:32,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:32,678 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:32,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:32,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869078807] [2022-11-16 12:10:32,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869078807] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:10:32,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705637575] [2022-11-16 12:10:32,679 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 12:10:32,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:32,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:32,680 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:32,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-16 12:10:32,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:32,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 12:10:32,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:32,975 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:32,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:10:33,160 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:10:33,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705637575] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:10:33,160 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:10:33,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 20 [2022-11-16 12:10:33,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487117313] [2022-11-16 12:10:33,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:10:33,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 12:10:33,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:33,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 12:10:33,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2022-11-16 12:10:33,161 INFO L87 Difference]: Start difference. First operand 50 states and 115 transitions. Second operand has 22 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:33,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:33,817 INFO L93 Difference]: Finished difference Result 70 states and 142 transitions. [2022-11-16 12:10:33,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:10:33,817 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-16 12:10:33,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:33,818 INFO L225 Difference]: With dead ends: 70 [2022-11-16 12:10:33,818 INFO L226 Difference]: Without dead ends: 60 [2022-11-16 12:10:33,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=229, Invalid=961, Unknown=0, NotChecked=0, Total=1190 [2022-11-16 12:10:33,819 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 105 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:10:33,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 3 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:10:33,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-16 12:10:33,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 40. [2022-11-16 12:10:33,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 39 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:33,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 82 transitions. [2022-11-16 12:10:33,825 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 82 transitions. Word has length 17 [2022-11-16 12:10:33,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:33,825 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 82 transitions. [2022-11-16 12:10:33,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:33,826 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 82 transitions. [2022-11-16 12:10:33,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 12:10:33,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:33,826 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:33,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:34,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-16 12:10:34,030 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-16 12:10:34,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:34,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1496987261, now seen corresponding path program 14 times [2022-11-16 12:10:34,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:34,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511776048] [2022-11-16 12:10:34,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:34,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:34,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:34,239 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:10:34,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:34,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511776048] [2022-11-16 12:10:34,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511776048] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:10:34,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966843560] [2022-11-16 12:10:34,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:10:34,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:34,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:34,242 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:34,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-16 12:10:34,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:10:34,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:10:34,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 12:10:34,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:34,512 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:34,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:10:34,651 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:10:34,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966843560] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:10:34,652 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:10:34,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 7] total 18 [2022-11-16 12:10:34,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242703951] [2022-11-16 12:10:34,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:10:34,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:10:34,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:34,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:10:34,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:10:34,653 INFO L87 Difference]: Start difference. First operand 40 states and 82 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:35,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:35,046 INFO L93 Difference]: Finished difference Result 52 states and 99 transitions. [2022-11-16 12:10:35,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:10:35,047 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-16 12:10:35,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:35,047 INFO L225 Difference]: With dead ends: 52 [2022-11-16 12:10:35,047 INFO L226 Difference]: Without dead ends: 0 [2022-11-16 12:10:35,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=159, Invalid=653, Unknown=0, NotChecked=0, Total=812 [2022-11-16 12:10:35,048 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 80 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:10:35,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 5 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:10:35,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-16 12:10:35,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-16 12:10:35,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:35,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-16 12:10:35,049 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2022-11-16 12:10:35,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:35,050 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 12:10:35,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:35,050 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-16 12:10:35,050 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-16 12:10:35,052 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2022-11-16 12:10:35,052 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2022-11-16 12:10:35,052 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2022-11-16 12:10:35,053 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2022-11-16 12:10:35,053 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2022-11-16 12:10:35,053 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2022-11-16 12:10:35,053 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2022-11-16 12:10:35,053 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2022-11-16 12:10:35,053 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2022-11-16 12:10:35,054 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2022-11-16 12:10:35,054 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2022-11-16 12:10:35,054 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2022-11-16 12:10:35,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-11-16 12:10:35,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2022-11-16 12:10:35,256 INFO L444 BasicCegarLoop]: Path program histogram: [16, 14, 6, 1, 1, 1, 1, 1] [2022-11-16 12:10:35,259 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 12:10:35,259 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:10:35,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:10:35 BasicIcfg [2022-11-16 12:10:35,261 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:10:35,262 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:10:35,262 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:10:35,263 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:10:35,263 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:09:28" (3/4) ... [2022-11-16 12:10:35,267 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 12:10:35,272 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-16 12:10:35,273 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-16 12:10:35,277 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-16 12:10:35,277 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 12:10:35,278 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-16 12:10:35,278 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 12:10:35,314 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 12:10:35,314 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:10:35,315 INFO L158 Benchmark]: Toolchain (without parser) took 68206.50ms. Allocated memory was 96.5MB in the beginning and 251.7MB in the end (delta: 155.2MB). Free memory was 64.1MB in the beginning and 129.4MB in the end (delta: -65.3MB). Peak memory consumption was 89.6MB. Max. memory is 16.1GB. [2022-11-16 12:10:35,315 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 96.5MB. Free memory is still 52.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:10:35,315 INFO L158 Benchmark]: CACSL2BoogieTranslator took 340.24ms. Allocated memory is still 96.5MB. Free memory was 63.9MB in the beginning and 72.7MB in the end (delta: -8.9MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2022-11-16 12:10:35,316 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.72ms. Allocated memory is still 96.5MB. Free memory was 72.7MB in the beginning and 71.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:10:35,316 INFO L158 Benchmark]: Boogie Preprocessor took 52.17ms. Allocated memory is still 96.5MB. Free memory was 71.0MB in the beginning and 69.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:10:35,316 INFO L158 Benchmark]: RCFGBuilder took 532.28ms. Allocated memory is still 96.5MB. Free memory was 69.5MB in the beginning and 54.2MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-16 12:10:35,316 INFO L158 Benchmark]: TraceAbstraction took 67165.76ms. Allocated memory was 96.5MB in the beginning and 251.7MB in the end (delta: 155.2MB). Free memory was 53.5MB in the beginning and 131.5MB in the end (delta: -78.0MB). Peak memory consumption was 77.9MB. Max. memory is 16.1GB. [2022-11-16 12:10:35,317 INFO L158 Benchmark]: Witness Printer took 52.27ms. Allocated memory is still 251.7MB. Free memory was 131.5MB in the beginning and 129.4MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:10:35,319 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 96.5MB. Free memory is still 52.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 340.24ms. Allocated memory is still 96.5MB. Free memory was 63.9MB in the beginning and 72.7MB in the end (delta: -8.9MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.72ms. Allocated memory is still 96.5MB. Free memory was 72.7MB in the beginning and 71.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 52.17ms. Allocated memory is still 96.5MB. Free memory was 71.0MB in the beginning and 69.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 532.28ms. Allocated memory is still 96.5MB. Free memory was 69.5MB in the beginning and 54.2MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 67165.76ms. Allocated memory was 96.5MB in the beginning and 251.7MB in the end (delta: 155.2MB). Free memory was 53.5MB in the beginning and 131.5MB in the end (delta: -78.0MB). Peak memory consumption was 77.9MB. Max. memory is 16.1GB. * Witness Printer took 52.27ms. Allocated memory is still 251.7MB. Free memory was 131.5MB in the beginning and 129.4MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.3s, 102 PlacesBefore, 32 PlacesAfterwards, 101 TransitionsBefore, 27 TransitionsAfterwards, 660 CoEnabledTransitionPairs, 7 FixpointIterations, 59 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 99 TotalNumberOfCompositions, 767 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 749, independent: 747, independent conditional: 0, independent unconditional: 747, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 403, independent: 401, independent conditional: 0, independent unconditional: 401, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 403, independent: 399, independent conditional: 0, independent unconditional: 399, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 17, independent: 10, independent conditional: 0, independent unconditional: 10, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 749, independent: 346, independent conditional: 0, independent unconditional: 346, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 403, unknown conditional: 0, unknown unconditional: 403] , Statistics on independence cache: Total cache size (in pairs): 32, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 76]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 61]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 116 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 67.0s, OverallIterations: 41, TraceHistogramMax: 3, PathProgramHistogramMax: 16, EmptinessCheckTime: 0.0s, AutomataDifference: 29.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4807 SdHoareTripleChecker+Valid, 11.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4807 mSDsluCounter, 679 SdHoareTripleChecker+Invalid, 9.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 524 mSDsCounter, 728 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15590 IncrementalHoareTripleChecker+Invalid, 16318 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 728 mSolverCounterUnsat, 155 mSDtfsCounter, 15590 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1645 GetRequests, 482 SyntacticMatches, 54 SemanticMatches, 1109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11676 ImplicationChecksByTransitivity, 25.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=26, InterpolantAutomatonStates: 723, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 41 MinimizatonAttempts, 1909 StatesRemovedByMinimization, 35 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 23.0s InterpolantComputationTime, 1039 NumberOfCodeBlocks, 1039 NumberOfCodeBlocksAsserted, 102 NumberOfCheckSat, 1410 ConstructedInterpolants, 0 QuantifiedInterpolants, 19151 SizeOfPredicates, 122 NumberOfNonLiveVariables, 4230 ConjunctsInSsa, 783 ConjunctsInUnsatCore, 101 InterpolantComputations, 11 PerfectInterpolantSequences, 23/390 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 - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 12:10:35,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb3439c-a69f-4c1b-870e-8315ff7dfddf/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE