./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/bigshot_s2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/bigshot_s2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN --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 fa644cc26c2bb4f900e6af52233648196eb4dff503d36a50559ddcf2a4270ffb --- 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-6b4ec56 [2022-11-20 11:05:16,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:05:16,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:05:16,744 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:05:16,745 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:05:16,746 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:05:16,748 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:05:16,750 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:05:16,752 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:05:16,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:05:16,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:05:16,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:05:16,762 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:05:16,764 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:05:16,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:05:16,766 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:05:16,767 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:05:16,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:05:16,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:05:16,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:05:16,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:05:16,776 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:05:16,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:05:16,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:05:16,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:05:16,784 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:05:16,785 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:05:16,786 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:05:16,787 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:05:16,788 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:05:16,789 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:05:16,790 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:05:16,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:05:16,792 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:05:16,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:05:16,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:05:16,795 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:05:16,796 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:05:16,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:05:16,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:05:16,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:05:16,818 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-20 11:05:16,874 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:05:16,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:05:16,881 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:05:16,881 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:05:16,882 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:05:16,882 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:05:16,883 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:05:16,884 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:05:16,884 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:05:16,884 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:05:16,886 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:05:16,886 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:05:16,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:05:16,886 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:05:16,887 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:05:16,887 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 11:05:16,887 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 11:05:16,887 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 11:05:16,888 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:05:16,888 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 11:05:16,888 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:05:16,888 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:05:16,889 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:05:16,889 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:05:16,889 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:05:16,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:05:16,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:05:16,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:05:16,892 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:05:16,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:05:16,892 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_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa644cc26c2bb4f900e6af52233648196eb4dff503d36a50559ddcf2a4270ffb [2022-11-20 11:05:17,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:05:17,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:05:17,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:05:17,185 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:05:17,186 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:05:17,187 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread/bigshot_s2.i [2022-11-20 11:05:20,526 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:05:20,891 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:05:20,892 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/sv-benchmarks/c/pthread/bigshot_s2.i [2022-11-20 11:05:20,918 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/data/26f18e773/9f37d5d171bd45429f7aa884644c760e/FLAG4e18d283f [2022-11-20 11:05:20,938 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/data/26f18e773/9f37d5d171bd45429f7aa884644c760e [2022-11-20 11:05:20,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:05:20,946 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:05:20,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:05:20,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:05:20,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:05:20,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:05:20" (1/1) ... [2022-11-20 11:05:20,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@208862a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:20, skipping insertion in model container [2022-11-20 11:05:20,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:05:20" (1/1) ... [2022-11-20 11:05:20,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:05:21,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:05:21,719 WARN L237 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_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/sv-benchmarks/c/pthread/bigshot_s2.i[55203,55216] [2022-11-20 11:05:21,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:05:21,761 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:05:21,811 WARN L237 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_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/sv-benchmarks/c/pthread/bigshot_s2.i[55203,55216] [2022-11-20 11:05:21,834 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:05:21,908 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:05:21,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:21 WrapperNode [2022-11-20 11:05:21,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:05:21,910 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:05:21,911 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:05:21,911 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:05:21,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:21" (1/1) ... [2022-11-20 11:05:21,944 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:21" (1/1) ... [2022-11-20 11:05:21,974 INFO L138 Inliner]: procedures = 323, calls = 33, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 75 [2022-11-20 11:05:21,975 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:05:21,976 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:05:21,976 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:05:21,976 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:05:21,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:21" (1/1) ... [2022-11-20 11:05:21,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:21" (1/1) ... [2022-11-20 11:05:21,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:21" (1/1) ... [2022-11-20 11:05:21,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:21" (1/1) ... [2022-11-20 11:05:21,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:21" (1/1) ... [2022-11-20 11:05:22,004 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:21" (1/1) ... [2022-11-20 11:05:22,020 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:21" (1/1) ... [2022-11-20 11:05:22,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:21" (1/1) ... [2022-11-20 11:05:22,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:05:22,025 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:05:22,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:05:22,026 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:05:22,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:21" (1/1) ... [2022-11-20 11:05:22,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:05:22,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:05:22,067 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:05:22,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:05:22,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:05:22,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:05:22,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-20 11:05:22,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:05:22,117 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 11:05:22,118 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 11:05:22,118 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 11:05:22,118 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 11:05:22,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:05:22,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:05:22,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:05:22,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:05:22,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:05:22,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:05:22,120 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:05:22,355 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:05:22,357 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:05:22,685 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:05:22,692 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:05:22,692 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 11:05:22,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:05:22 BoogieIcfgContainer [2022-11-20 11:05:22,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:05:22,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:05:22,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:05:22,701 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:05:22,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:05:20" (1/3) ... [2022-11-20 11:05:22,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2da3e802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:05:22, skipping insertion in model container [2022-11-20 11:05:22,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:05:21" (2/3) ... [2022-11-20 11:05:22,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2da3e802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:05:22, skipping insertion in model container [2022-11-20 11:05:22,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:05:22" (3/3) ... [2022-11-20 11:05:22,704 INFO L112 eAbstractionObserver]: Analyzing ICFG bigshot_s2.i [2022-11-20 11:05:22,728 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:05:22,728 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-20 11:05:22,728 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:05:22,813 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 11:05:22,852 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 11:05:22,869 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 114 transitions, 244 flow [2022-11-20 11:05:22,872 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 114 transitions, 244 flow [2022-11-20 11:05:22,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 114 transitions, 244 flow [2022-11-20 11:05:22,932 INFO L130 PetriNetUnfolder]: 4/112 cut-off events. [2022-11-20 11:05:22,932 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 11:05:22,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 112 events. 4/112 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 136 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2022-11-20 11:05:22,938 INFO L119 LiptonReduction]: Number of co-enabled transitions 360 [2022-11-20 11:05:28,762 INFO L134 LiptonReduction]: Checked pairs total: 482 [2022-11-20 11:05:28,762 INFO L136 LiptonReduction]: Total number of compositions: 128 [2022-11-20 11:05:28,772 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 34 transitions, 84 flow [2022-11-20 11:05:28,787 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 57 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 56 states have internal predecessors, (91), 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) [2022-11-20 11:05:28,804 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:05:28,810 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;@637b6797, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:05:28,811 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-11-20 11:05:28,812 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 56 states have internal predecessors, (91), 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) [2022-11-20 11:05:28,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-20 11:05:28,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:05:28,818 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-20 11:05:28,818 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:05:28,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:05:28,824 INFO L85 PathProgramCache]: Analyzing trace with hash 440, now seen corresponding path program 1 times [2022-11-20 11:05:28,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:05:28,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755557293] [2022-11-20 11:05:28,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:28,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:05:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:28,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:28,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:05:28,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755557293] [2022-11-20 11:05:28,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755557293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:05:28,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:05:28,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-20 11:05:28,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048609720] [2022-11-20 11:05:28,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:05:28,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:05:28,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:05:28,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:05:28,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:05:28,986 INFO L87 Difference]: Start difference. First operand has 57 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 56 states have internal predecessors, (91), 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) [2022-11-20 11:05:29,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:05:29,063 INFO L93 Difference]: Finished difference Result 47 states and 75 transitions. [2022-11-20 11:05:29,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:05:29,066 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 [2022-11-20 11:05:29,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:05:29,074 INFO L225 Difference]: With dead ends: 47 [2022-11-20 11:05:29,074 INFO L226 Difference]: Without dead ends: 47 [2022-11-20 11:05:29,075 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 [2022-11-20 11:05:29,079 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:05:29,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:05:29,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-20 11:05:29,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-11-20 11:05:29,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 25 states have (on average 3.0) internal successors, (75), 46 states have internal predecessors, (75), 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) [2022-11-20 11:05:29,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 75 transitions. [2022-11-20 11:05:29,123 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 75 transitions. Word has length 1 [2022-11-20 11:05:29,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:05:29,125 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 75 transitions. [2022-11-20 11:05:29,128 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) [2022-11-20 11:05:29,130 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 75 transitions. [2022-11-20 11:05:29,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 11:05:29,131 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:05:29,131 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 11:05:29,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:05:29,132 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:05:29,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:05:29,133 INFO L85 PathProgramCache]: Analyzing trace with hash 433898, now seen corresponding path program 1 times [2022-11-20 11:05:29,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:05:29,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163734770] [2022-11-20 11:05:29,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:29,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:05:29,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:29,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:29,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:05:29,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163734770] [2022-11-20 11:05:29,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163734770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:05:29,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:05:29,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:05:29,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345766892] [2022-11-20 11:05:29,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:05:29,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:05:29,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:05:29,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:05:29,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:05:29,464 INFO L87 Difference]: Start difference. First operand 47 states and 75 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) [2022-11-20 11:05:29,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:05:29,512 INFO L93 Difference]: Finished difference Result 45 states and 72 transitions. [2022-11-20 11:05:29,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:05:29,513 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 [2022-11-20 11:05:29,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:05:29,514 INFO L225 Difference]: With dead ends: 45 [2022-11-20 11:05:29,514 INFO L226 Difference]: Without dead ends: 45 [2022-11-20 11:05:29,515 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 [2022-11-20 11:05:29,516 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:05:29,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 0 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:05:29,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-20 11:05:29,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-11-20 11:05:29,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 24 states have (on average 3.0) internal successors, (72), 44 states have internal predecessors, (72), 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) [2022-11-20 11:05:29,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 72 transitions. [2022-11-20 11:05:29,524 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 72 transitions. Word has length 3 [2022-11-20 11:05:29,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:05:29,524 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 72 transitions. [2022-11-20 11:05:29,524 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) [2022-11-20 11:05:29,524 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 72 transitions. [2022-11-20 11:05:29,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 11:05:29,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:05:29,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 11:05:29,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:05:29,525 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:05:29,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:05:29,526 INFO L85 PathProgramCache]: Analyzing trace with hash 433899, now seen corresponding path program 1 times [2022-11-20 11:05:29,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:05:29,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395484368] [2022-11-20 11:05:29,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:29,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:05:29,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:29,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:29,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:05:29,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395484368] [2022-11-20 11:05:29,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395484368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:05:29,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:05:29,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:05:29,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19999850] [2022-11-20 11:05:29,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:05:29,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:05:29,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:05:29,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:05:29,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:05:29,672 INFO L87 Difference]: Start difference. First operand 45 states and 72 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) [2022-11-20 11:05:29,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:05:29,726 INFO L93 Difference]: Finished difference Result 44 states and 70 transitions. [2022-11-20 11:05:29,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:05:29,727 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 [2022-11-20 11:05:29,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:05:29,728 INFO L225 Difference]: With dead ends: 44 [2022-11-20 11:05:29,728 INFO L226 Difference]: Without dead ends: 44 [2022-11-20 11:05:29,729 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 [2022-11-20 11:05:29,730 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:05:29,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:05:29,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-20 11:05:29,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-11-20 11:05:29,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 43 states have internal predecessors, (70), 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) [2022-11-20 11:05:29,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 70 transitions. [2022-11-20 11:05:29,737 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 70 transitions. Word has length 3 [2022-11-20 11:05:29,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:05:29,737 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 70 transitions. [2022-11-20 11:05:29,737 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) [2022-11-20 11:05:29,737 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 70 transitions. [2022-11-20 11:05:29,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 11:05:29,738 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:05:29,738 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 11:05:29,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:05:29,739 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:05:29,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:05:29,739 INFO L85 PathProgramCache]: Analyzing trace with hash 13452070, now seen corresponding path program 1 times [2022-11-20 11:05:29,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:05:29,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745945504] [2022-11-20 11:05:29,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:29,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:05:29,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:29,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:29,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:05:29,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745945504] [2022-11-20 11:05:29,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745945504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:05:29,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:05:29,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:05:29,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62063262] [2022-11-20 11:05:29,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:05:29,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:05:29,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:05:29,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:05:29,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:05:29,997 INFO L87 Difference]: Start difference. First operand 44 states and 70 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-20 11:05:30,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:05:30,053 INFO L93 Difference]: Finished difference Result 43 states and 69 transitions. [2022-11-20 11:05:30,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:05:30,054 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2022-11-20 11:05:30,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:05:30,054 INFO L225 Difference]: With dead ends: 43 [2022-11-20 11:05:30,054 INFO L226 Difference]: Without dead ends: 43 [2022-11-20 11:05:30,055 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 [2022-11-20 11:05:30,056 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:05:30,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:05:30,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-20 11:05:30,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-11-20 11:05:30,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 23 states have (on average 3.0) internal successors, (69), 42 states have internal predecessors, (69), 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) [2022-11-20 11:05:30,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 69 transitions. [2022-11-20 11:05:30,061 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 69 transitions. Word has length 4 [2022-11-20 11:05:30,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:05:30,062 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 69 transitions. [2022-11-20 11:05:30,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-20 11:05:30,062 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 69 transitions. [2022-11-20 11:05:30,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 11:05:30,063 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:05:30,063 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 11:05:30,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:05:30,063 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:05:30,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:05:30,064 INFO L85 PathProgramCache]: Analyzing trace with hash 42544633, now seen corresponding path program 1 times [2022-11-20 11:05:30,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:05:30,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084124329] [2022-11-20 11:05:30,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:30,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:05:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:30,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:30,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:05:30,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084124329] [2022-11-20 11:05:30,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084124329] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:05:30,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:05:30,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:05:30,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251497355] [2022-11-20 11:05:30,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:05:30,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:05:30,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:05:30,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:05:30,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:05:30,154 INFO L87 Difference]: Start difference. First operand 43 states and 69 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-11-20 11:05:30,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:05:30,202 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2022-11-20 11:05:30,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:05:30,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2022-11-20 11:05:30,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:05:30,204 INFO L225 Difference]: With dead ends: 35 [2022-11-20 11:05:30,204 INFO L226 Difference]: Without dead ends: 35 [2022-11-20 11:05:30,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:05:30,205 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:05:30,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:05:30,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-20 11:05:30,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-11-20 11:05:30,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 34 states have internal predecessors, (53), 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) [2022-11-20 11:05:30,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 53 transitions. [2022-11-20 11:05:30,211 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 53 transitions. Word has length 6 [2022-11-20 11:05:30,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:05:30,211 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 53 transitions. [2022-11-20 11:05:30,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-11-20 11:05:30,212 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 53 transitions. [2022-11-20 11:05:30,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 11:05:30,212 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:05:30,212 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 11:05:30,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:05:30,213 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:05:30,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:05:30,214 INFO L85 PathProgramCache]: Analyzing trace with hash 42544634, now seen corresponding path program 1 times [2022-11-20 11:05:30,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:05:30,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215347453] [2022-11-20 11:05:30,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:30,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:05:30,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:30,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:30,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:05:30,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215347453] [2022-11-20 11:05:30,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215347453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:05:30,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:05:30,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:05:30,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643877496] [2022-11-20 11:05:30,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:05:30,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:05:30,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:05:30,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:05:30,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:05:30,337 INFO L87 Difference]: Start difference. First operand 35 states and 53 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-20 11:05:30,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:05:30,386 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2022-11-20 11:05:30,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:05:30,386 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-11-20 11:05:30,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:05:30,387 INFO L225 Difference]: With dead ends: 27 [2022-11-20 11:05:30,387 INFO L226 Difference]: Without dead ends: 27 [2022-11-20 11:05:30,388 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 [2022-11-20 11:05:30,389 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:05:30,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 0 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:05:30,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-20 11:05:30,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-20 11:05:30,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 26 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) [2022-11-20 11:05:30,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2022-11-20 11:05:30,393 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 6 [2022-11-20 11:05:30,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:05:30,393 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2022-11-20 11:05:30,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-20 11:05:30,393 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2022-11-20 11:05:30,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 11:05:30,394 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:05:30,394 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:05:30,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:05:30,395 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:05:30,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:05:30,395 INFO L85 PathProgramCache]: Analyzing trace with hash 432062063, now seen corresponding path program 1 times [2022-11-20 11:05:30,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:05:30,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629723107] [2022-11-20 11:05:30,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:30,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:05:30,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:30,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:30,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:05:30,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629723107] [2022-11-20 11:05:30,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629723107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:05:30,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:05:30,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:05:30,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048782653] [2022-11-20 11:05:30,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:05:30,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:05:30,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:05:30,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:05:30,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:05:30,531 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-11-20 11:05:30,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:05:30,635 INFO L93 Difference]: Finished difference Result 40 states and 55 transitions. [2022-11-20 11:05:30,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:05:30,636 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2022-11-20 11:05:30,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:05:30,638 INFO L225 Difference]: With dead ends: 40 [2022-11-20 11:05:30,638 INFO L226 Difference]: Without dead ends: 40 [2022-11-20 11:05:30,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:05:30,639 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 27 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:05:30,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 2 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:05:30,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-20 11:05:30,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 28. [2022-11-20 11:05:30,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 2.238095238095238) internal successors, (47), 27 states have internal predecessors, (47), 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) [2022-11-20 11:05:30,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 47 transitions. [2022-11-20 11:05:30,646 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 47 transitions. Word has length 9 [2022-11-20 11:05:30,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:05:30,646 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 47 transitions. [2022-11-20 11:05:30,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-11-20 11:05:30,647 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 47 transitions. [2022-11-20 11:05:30,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 11:05:30,647 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:05:30,647 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:05:30,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:05:30,648 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:05:30,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:05:30,648 INFO L85 PathProgramCache]: Analyzing trace with hash 432061952, now seen corresponding path program 1 times [2022-11-20 11:05:30,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:05:30,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622369844] [2022-11-20 11:05:30,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:30,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:05:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:30,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:30,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:05:30,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622369844] [2022-11-20 11:05:30,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622369844] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:05:30,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:05:30,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:05:30,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060738362] [2022-11-20 11:05:30,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:05:30,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:05:30,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:05:30,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:05:30,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:05:30,912 INFO L87 Difference]: Start difference. First operand 28 states and 47 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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) [2022-11-20 11:05:30,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:05:30,981 INFO L93 Difference]: Finished difference Result 31 states and 47 transitions. [2022-11-20 11:05:30,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:05:30,982 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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 9 [2022-11-20 11:05:30,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:05:30,983 INFO L225 Difference]: With dead ends: 31 [2022-11-20 11:05:30,983 INFO L226 Difference]: Without dead ends: 31 [2022-11-20 11:05:30,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:05:30,984 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:05:30,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 0 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:05:30,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-20 11:05:30,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2022-11-20 11:05:30,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 2.1) internal successors, (42), 25 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) [2022-11-20 11:05:30,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 42 transitions. [2022-11-20 11:05:30,987 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 42 transitions. Word has length 9 [2022-11-20 11:05:30,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:05:30,987 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 42 transitions. [2022-11-20 11:05:30,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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) [2022-11-20 11:05:30,988 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 42 transitions. [2022-11-20 11:05:30,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 11:05:30,988 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:05:30,988 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:05:30,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:05:30,989 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:05:30,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:05:30,989 INFO L85 PathProgramCache]: Analyzing trace with hash 432062064, now seen corresponding path program 1 times [2022-11-20 11:05:30,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:05:30,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684840684] [2022-11-20 11:05:30,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:30,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:05:31,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:31,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:31,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:05:31,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684840684] [2022-11-20 11:05:31,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684840684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:05:31,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:05:31,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:05:31,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816537136] [2022-11-20 11:05:31,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:05:31,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:05:31,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:05:31,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:05:31,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:05:31,049 INFO L87 Difference]: Start difference. First operand 26 states and 42 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-11-20 11:05:31,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:05:31,100 INFO L93 Difference]: Finished difference Result 27 states and 40 transitions. [2022-11-20 11:05:31,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:05:31,101 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2022-11-20 11:05:31,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:05:31,101 INFO L225 Difference]: With dead ends: 27 [2022-11-20 11:05:31,101 INFO L226 Difference]: Without dead ends: 27 [2022-11-20 11:05:31,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:05:31,102 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:05:31,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:05:31,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-20 11:05:31,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2022-11-20 11:05:31,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.894736842105263) internal successors, (36), 22 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) [2022-11-20 11:05:31,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 36 transitions. [2022-11-20 11:05:31,105 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 36 transitions. Word has length 9 [2022-11-20 11:05:31,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:05:31,106 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 36 transitions. [2022-11-20 11:05:31,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-11-20 11:05:31,106 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 36 transitions. [2022-11-20 11:05:31,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 11:05:31,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:05:31,106 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:05:31,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:05:31,107 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:05:31,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:05:31,107 INFO L85 PathProgramCache]: Analyzing trace with hash 432061993, now seen corresponding path program 1 times [2022-11-20 11:05:31,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:05:31,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909016316] [2022-11-20 11:05:31,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:31,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:05:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:31,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:31,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:05:31,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909016316] [2022-11-20 11:05:31,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909016316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:05:31,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:05:31,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:05:31,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081979506] [2022-11-20 11:05:31,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:05:31,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:05:31,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:05:31,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:05:31,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:05:31,472 INFO L87 Difference]: Start difference. First operand 23 states and 36 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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) [2022-11-20 11:05:31,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:05:31,692 INFO L93 Difference]: Finished difference Result 28 states and 38 transitions. [2022-11-20 11:05:31,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:05:31,692 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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 9 [2022-11-20 11:05:31,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:05:31,693 INFO L225 Difference]: With dead ends: 28 [2022-11-20 11:05:31,693 INFO L226 Difference]: Without dead ends: 28 [2022-11-20 11:05:31,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:05:31,694 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 51 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:05:31,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 0 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:05:31,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-20 11:05:31,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2022-11-20 11:05:31,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 22 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) [2022-11-20 11:05:31,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 34 transitions. [2022-11-20 11:05:31,697 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 34 transitions. Word has length 9 [2022-11-20 11:05:31,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:05:31,698 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 34 transitions. [2022-11-20 11:05:31,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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) [2022-11-20 11:05:31,698 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 34 transitions. [2022-11-20 11:05:31,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 11:05:31,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:05:31,699 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:05:31,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:05:31,699 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:05:31,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:05:31,700 INFO L85 PathProgramCache]: Analyzing trace with hash 509023273, now seen corresponding path program 1 times [2022-11-20 11:05:31,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:05:31,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874214576] [2022-11-20 11:05:31,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:31,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:05:31,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:31,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:31,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:05:31,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874214576] [2022-11-20 11:05:31,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874214576] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:05:31,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892060943] [2022-11-20 11:05:31,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:31,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:05:31,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:05:31,858 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:05:31,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:05:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:31,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 11:05:32,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:05:32,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:05:32,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:32,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:05:32,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:32,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892060943] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:05:32,214 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:05:32,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2022-11-20 11:05:32,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895680563] [2022-11-20 11:05:32,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:05:32,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 11:05:32,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:05:32,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 11:05:32,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:05:32,215 INFO L87 Difference]: Start difference. First operand 23 states and 34 transitions. Second operand has 11 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 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) [2022-11-20 11:05:32,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:05:32,422 INFO L93 Difference]: Finished difference Result 55 states and 74 transitions. [2022-11-20 11:05:32,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:05:32,423 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 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 10 [2022-11-20 11:05:32,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:05:32,423 INFO L225 Difference]: With dead ends: 55 [2022-11-20 11:05:32,423 INFO L226 Difference]: Without dead ends: 55 [2022-11-20 11:05:32,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:05:32,424 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 56 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:05:32,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 0 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:05:32,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-20 11:05:32,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 29. [2022-11-20 11:05:32,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 25 states have (on average 2.2) internal successors, (55), 28 states have internal predecessors, (55), 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) [2022-11-20 11:05:32,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 55 transitions. [2022-11-20 11:05:32,428 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 55 transitions. Word has length 10 [2022-11-20 11:05:32,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:05:32,428 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 55 transitions. [2022-11-20 11:05:32,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 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) [2022-11-20 11:05:32,428 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 55 transitions. [2022-11-20 11:05:32,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 11:05:32,429 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:05:32,429 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:05:32,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:05:32,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:05:32,630 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:05:32,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:05:32,630 INFO L85 PathProgramCache]: Analyzing trace with hash 509023203, now seen corresponding path program 1 times [2022-11-20 11:05:32,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:05:32,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082339788] [2022-11-20 11:05:32,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:32,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:05:32,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:33,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:33,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:05:33,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082339788] [2022-11-20 11:05:33,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082339788] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:05:33,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59011164] [2022-11-20 11:05:33,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:33,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:05:33,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:05:33,087 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:05:33,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:05:33,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:33,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-20 11:05:33,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:05:33,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:05:33,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:05:33,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:05:33,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-20 11:05:33,266 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-20 11:05:33,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-11-20 11:05:33,359 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-20 11:05:33,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 11:05:33,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 11:05:33,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:33,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:05:33,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:33,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59011164] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:05:33,634 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:05:33,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 14 [2022-11-20 11:05:33,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784552833] [2022-11-20 11:05:33,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:05:33,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:05:33,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:05:33,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:05:33,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:05:33,637 INFO L87 Difference]: Start difference. First operand 29 states and 55 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 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) [2022-11-20 11:05:34,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:05:34,662 INFO L93 Difference]: Finished difference Result 78 states and 118 transitions. [2022-11-20 11:05:34,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:05:34,662 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 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 10 [2022-11-20 11:05:34,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:05:34,664 INFO L225 Difference]: With dead ends: 78 [2022-11-20 11:05:34,664 INFO L226 Difference]: Without dead ends: 78 [2022-11-20 11:05:34,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2022-11-20 11:05:34,665 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 110 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 72 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:05:34,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 0 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 172 Invalid, 0 Unknown, 72 Unchecked, 0.2s Time] [2022-11-20 11:05:34,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-20 11:05:34,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 42. [2022-11-20 11:05:34,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 38 states have (on average 2.1842105263157894) internal successors, (83), 41 states have internal predecessors, (83), 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) [2022-11-20 11:05:34,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 83 transitions. [2022-11-20 11:05:34,670 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 83 transitions. Word has length 10 [2022-11-20 11:05:34,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:05:34,670 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 83 transitions. [2022-11-20 11:05:34,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 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) [2022-11-20 11:05:34,671 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 83 transitions. [2022-11-20 11:05:34,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 11:05:34,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:05:34,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:05:34,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:05:34,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 11:05:34,877 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:05:34,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:05:34,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1474934013, now seen corresponding path program 2 times [2022-11-20 11:05:34,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:05:34,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384548731] [2022-11-20 11:05:34,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:34,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:05:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:35,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:35,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:05:35,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384548731] [2022-11-20 11:05:35,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384548731] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:05:35,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473523991] [2022-11-20 11:05:35,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:05:35,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:05:35,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:05:35,486 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:05:35,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:05:35,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:05:35,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:05:35,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-20 11:05:35,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:05:35,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:05:35,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:05:35,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:05:35,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-20 11:05:35,670 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-20 11:05:35,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 46 [2022-11-20 11:05:35,748 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 11:05:35,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-20 11:05:35,771 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 11:05:35,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 11:05:35,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:35,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:05:36,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:36,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473523991] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:05:36,074 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:05:36,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 14 [2022-11-20 11:05:36,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149805882] [2022-11-20 11:05:36,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:05:36,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:05:36,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:05:36,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:05:36,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:05:36,076 INFO L87 Difference]: Start difference. First operand 42 states and 83 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 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) [2022-11-20 11:05:36,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:05:36,928 INFO L93 Difference]: Finished difference Result 62 states and 93 transitions. [2022-11-20 11:05:36,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:05:36,929 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 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 10 [2022-11-20 11:05:36,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:05:36,929 INFO L225 Difference]: With dead ends: 62 [2022-11-20 11:05:36,929 INFO L226 Difference]: Without dead ends: 62 [2022-11-20 11:05:36,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2022-11-20 11:05:36,930 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 189 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:05:36,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 0 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 102 Invalid, 0 Unknown, 3 Unchecked, 0.2s Time] [2022-11-20 11:05:36,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-20 11:05:36,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 29. [2022-11-20 11:05:36,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 25 states have (on average 1.96) internal successors, (49), 28 states have internal predecessors, (49), 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) [2022-11-20 11:05:36,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 49 transitions. [2022-11-20 11:05:36,933 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 49 transitions. Word has length 10 [2022-11-20 11:05:36,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:05:36,933 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 49 transitions. [2022-11-20 11:05:36,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 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) [2022-11-20 11:05:36,933 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 49 transitions. [2022-11-20 11:05:36,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 11:05:36,934 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:05:36,934 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:05:36,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:05:37,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 11:05:37,135 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:05:37,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:05:37,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1401276277, now seen corresponding path program 1 times [2022-11-20 11:05:37,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:05:37,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767847407] [2022-11-20 11:05:37,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:37,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:05:37,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:37,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:37,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:05:37,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767847407] [2022-11-20 11:05:37,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767847407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:05:37,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:05:37,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:05:37,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442697400] [2022-11-20 11:05:37,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:05:37,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:05:37,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:05:37,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:05:37,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:05:37,186 INFO L87 Difference]: Start difference. First operand 29 states and 49 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-11-20 11:05:37,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:05:37,218 INFO L93 Difference]: Finished difference Result 29 states and 47 transitions. [2022-11-20 11:05:37,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:05:37,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2022-11-20 11:05:37,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:05:37,220 INFO L225 Difference]: With dead ends: 29 [2022-11-20 11:05:37,220 INFO L226 Difference]: Without dead ends: 29 [2022-11-20 11:05:37,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:05:37,221 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:05:37,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 0 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:05:37,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-20 11:05:37,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-20 11:05:37,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 25 states have (on average 1.88) internal successors, (47), 28 states have internal predecessors, (47), 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) [2022-11-20 11:05:37,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 47 transitions. [2022-11-20 11:05:37,227 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 47 transitions. Word has length 11 [2022-11-20 11:05:37,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:05:37,227 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 47 transitions. [2022-11-20 11:05:37,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-11-20 11:05:37,227 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 47 transitions. [2022-11-20 11:05:37,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 11:05:37,228 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:05:37,229 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:05:37,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:05:37,229 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:05:37,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:05:37,231 INFO L85 PathProgramCache]: Analyzing trace with hash -489299993, now seen corresponding path program 1 times [2022-11-20 11:05:37,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:05:37,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742242777] [2022-11-20 11:05:37,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:37,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:05:37,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:37,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:37,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:05:37,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742242777] [2022-11-20 11:05:37,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742242777] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:05:37,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:05:37,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:05:37,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287881701] [2022-11-20 11:05:37,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:05:37,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:05:37,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:05:37,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:05:37,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:05:37,624 INFO L87 Difference]: Start difference. First operand 29 states and 47 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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) [2022-11-20 11:05:37,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:05:37,756 INFO L93 Difference]: Finished difference Result 29 states and 45 transitions. [2022-11-20 11:05:37,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:05:37,756 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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 12 [2022-11-20 11:05:37,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:05:37,757 INFO L225 Difference]: With dead ends: 29 [2022-11-20 11:05:37,757 INFO L226 Difference]: Without dead ends: 29 [2022-11-20 11:05:37,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:05:37,758 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:05:37,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:05:37,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-20 11:05:37,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-20 11:05:37,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 25 states have (on average 1.8) internal successors, (45), 28 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) [2022-11-20 11:05:37,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 45 transitions. [2022-11-20 11:05:37,760 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 45 transitions. Word has length 12 [2022-11-20 11:05:37,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:05:37,760 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 45 transitions. [2022-11-20 11:05:37,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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) [2022-11-20 11:05:37,761 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 45 transitions. [2022-11-20 11:05:37,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 11:05:37,761 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:05:37,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:05:37,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:05:37,762 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:05:37,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:05:37,762 INFO L85 PathProgramCache]: Analyzing trace with hash 2011386469, now seen corresponding path program 1 times [2022-11-20 11:05:37,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:05:37,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393020068] [2022-11-20 11:05:37,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:37,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:05:37,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:38,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:38,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:05:38,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393020068] [2022-11-20 11:05:38,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393020068] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:05:38,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795979025] [2022-11-20 11:05:38,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:38,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:05:38,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:05:38,178 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:05:38,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:05:38,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:38,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-20 11:05:38,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:05:38,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:05:38,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:05:38,313 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-20 11:05:38,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-11-20 11:05:38,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:05:38,457 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:05:38,468 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 11:05:38,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2022-11-20 11:05:38,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:05:38,517 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 11:05:38,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2022-11-20 11:05:38,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:38,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:05:38,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:38,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795979025] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:05:38,712 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:05:38,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 17 [2022-11-20 11:05:38,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466549806] [2022-11-20 11:05:38,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:05:38,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:05:38,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:05:38,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:05:38,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:05:38,714 INFO L87 Difference]: Start difference. First operand 29 states and 45 transitions. Second operand has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 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) [2022-11-20 11:05:39,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:05:39,058 INFO L93 Difference]: Finished difference Result 32 states and 46 transitions. [2022-11-20 11:05:39,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:05:39,059 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 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 13 [2022-11-20 11:05:39,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:05:39,059 INFO L225 Difference]: With dead ends: 32 [2022-11-20 11:05:39,059 INFO L226 Difference]: Without dead ends: 32 [2022-11-20 11:05:39,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:05:39,060 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:05:39,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 112 Invalid, 0 Unknown, 48 Unchecked, 0.1s Time] [2022-11-20 11:05:39,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-20 11:05:39,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-11-20 11:05:39,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 31 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) [2022-11-20 11:05:39,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2022-11-20 11:05:39,063 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 13 [2022-11-20 11:05:39,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:05:39,063 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2022-11-20 11:05:39,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 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) [2022-11-20 11:05:39,063 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2022-11-20 11:05:39,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 11:05:39,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:05:39,064 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:05:39,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:05:39,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 11:05:39,270 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:05:39,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:05:39,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1215996689, now seen corresponding path program 2 times [2022-11-20 11:05:39,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:05:39,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9395522] [2022-11-20 11:05:39,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:39,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:05:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:39,540 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:39,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:05:39,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9395522] [2022-11-20 11:05:39,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9395522] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:05:39,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680519214] [2022-11-20 11:05:39,541 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:05:39,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:05:39,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:05:39,543 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:05:39,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:05:39,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:05:39,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:05:39,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-20 11:05:39,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:05:39,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:05:39,714 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-20 11:05:39,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-20 11:05:39,759 INFO L321 Elim1Store]: treesize reduction 40, result has 36.5 percent of original size [2022-11-20 11:05:39,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 34 [2022-11-20 11:05:39,893 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-20 11:05:39,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 43 [2022-11-20 11:05:39,912 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 11:05:39,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 28 [2022-11-20 11:05:40,218 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 11:05:40,218 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:05:40,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680519214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:05:40,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:05:40,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 10 [2022-11-20 11:05:40,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633090381] [2022-11-20 11:05:40,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:05:40,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:05:40,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:05:40,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:05:40,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:05:40,220 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-11-20 11:05:40,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:05:40,229 INFO L93 Difference]: Finished difference Result 41 states and 65 transitions. [2022-11-20 11:05:40,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:05:40,230 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 [2022-11-20 11:05:40,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:05:40,230 INFO L225 Difference]: With dead ends: 41 [2022-11-20 11:05:40,231 INFO L226 Difference]: Without dead ends: 41 [2022-11-20 11:05:40,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:05:40,231 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:05:40,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 26 Unchecked, 0.0s Time] [2022-11-20 11:05:40,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-20 11:05:40,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-11-20 11:05:40,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 37 states have (on average 1.7567567567567568) internal successors, (65), 40 states have internal predecessors, (65), 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) [2022-11-20 11:05:40,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 65 transitions. [2022-11-20 11:05:40,234 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 65 transitions. Word has length 13 [2022-11-20 11:05:40,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:05:40,235 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 65 transitions. [2022-11-20 11:05:40,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-11-20 11:05:40,235 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 65 transitions. [2022-11-20 11:05:40,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 11:05:40,235 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:05:40,235 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:05:40,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:05:40,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 11:05:40,446 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:05:40,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:05:40,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1215996759, now seen corresponding path program 3 times [2022-11-20 11:05:40,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:05:40,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569901394] [2022-11-20 11:05:40,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:40,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:05:40,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:40,800 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:40,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:05:40,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569901394] [2022-11-20 11:05:40,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569901394] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:05:40,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124484289] [2022-11-20 11:05:40,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:05:40,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:05:40,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:05:40,803 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:05:40,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:05:40,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 11:05:40,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:05:40,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-20 11:05:40,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:05:40,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:05:40,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:05:40,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:05:40,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-20 11:05:40,994 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-20 11:05:40,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-11-20 11:05:41,057 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 11:05:41,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-20 11:05:41,082 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-20 11:05:41,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 11:05:41,344 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:41,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:05:41,738 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:41,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124484289] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:05:41,739 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:05:41,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 22 [2022-11-20 11:05:41,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953248607] [2022-11-20 11:05:41,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:05:41,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 11:05:41,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:05:41,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 11:05:41,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2022-11-20 11:05:41,741 INFO L87 Difference]: Start difference. First operand 41 states and 65 transitions. Second operand has 24 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 23 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) [2022-11-20 11:05:42,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:05:42,942 INFO L93 Difference]: Finished difference Result 90 states and 124 transitions. [2022-11-20 11:05:42,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:05:42,943 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 23 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 13 [2022-11-20 11:05:42,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:05:42,943 INFO L225 Difference]: With dead ends: 90 [2022-11-20 11:05:42,943 INFO L226 Difference]: Without dead ends: 90 [2022-11-20 11:05:42,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=341, Invalid=1299, Unknown=0, NotChecked=0, Total=1640 [2022-11-20 11:05:42,944 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 244 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:05:42,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 0 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 323 Invalid, 0 Unknown, 35 Unchecked, 0.3s Time] [2022-11-20 11:05:42,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-11-20 11:05:42,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 54. [2022-11-20 11:05:42,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 50 states have (on average 1.92) internal successors, (96), 53 states have internal predecessors, (96), 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) [2022-11-20 11:05:42,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 96 transitions. [2022-11-20 11:05:42,948 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 96 transitions. Word has length 13 [2022-11-20 11:05:42,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:05:42,948 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 96 transitions. [2022-11-20 11:05:42,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 23 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) [2022-11-20 11:05:42,948 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 96 transitions. [2022-11-20 11:05:42,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 11:05:42,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:05:42,949 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:05:42,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:05:43,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 11:05:43,157 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:05:43,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:05:43,158 INFO L85 PathProgramCache]: Analyzing trace with hash -2047939179, now seen corresponding path program 3 times [2022-11-20 11:05:43,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:05:43,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368435972] [2022-11-20 11:05:43,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:43,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:05:43,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:43,370 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:43,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:05:43,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368435972] [2022-11-20 11:05:43,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368435972] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:05:43,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264129534] [2022-11-20 11:05:43,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:05:43,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:05:43,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:05:43,374 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:05:43,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:05:43,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-20 11:05:43,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:05:43,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-20 11:05:43,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:05:43,534 INFO L321 Elim1Store]: treesize reduction 40, result has 36.5 percent of original size [2022-11-20 11:05:43,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 34 [2022-11-20 11:05:43,570 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-20 11:05:43,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-20 11:05:43,750 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-20 11:05:43,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 43 [2022-11-20 11:05:43,766 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 11:05:43,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 33 [2022-11-20 11:05:44,075 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 11:05:44,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:05:44,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264129534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:05:44,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:05:44,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 10 [2022-11-20 11:05:44,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050430885] [2022-11-20 11:05:44,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:05:44,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:05:44,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:05:44,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:05:44,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:05:44,079 INFO L87 Difference]: Start difference. First operand 54 states and 96 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-11-20 11:05:44,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:05:44,102 INFO L93 Difference]: Finished difference Result 53 states and 94 transitions. [2022-11-20 11:05:44,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:05:44,102 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 [2022-11-20 11:05:44,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:05:44,103 INFO L225 Difference]: With dead ends: 53 [2022-11-20 11:05:44,103 INFO L226 Difference]: Without dead ends: 53 [2022-11-20 11:05:44,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:05:44,104 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:05:44,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 48 Unchecked, 0.0s Time] [2022-11-20 11:05:44,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-20 11:05:44,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2022-11-20 11:05:44,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 48 states have (on average 1.875) internal successors, (90), 51 states have internal predecessors, (90), 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) [2022-11-20 11:05:44,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 90 transitions. [2022-11-20 11:05:44,107 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 90 transitions. Word has length 13 [2022-11-20 11:05:44,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:05:44,108 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 90 transitions. [2022-11-20 11:05:44,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-11-20 11:05:44,108 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 90 transitions. [2022-11-20 11:05:44,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 11:05:44,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:05:44,109 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:05:44,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:05:44,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:05:44,315 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:05:44,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:05:44,315 INFO L85 PathProgramCache]: Analyzing trace with hash -2047939249, now seen corresponding path program 4 times [2022-11-20 11:05:44,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:05:44,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731028292] [2022-11-20 11:05:44,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:44,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:05:44,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:44,771 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:44,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:05:44,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731028292] [2022-11-20 11:05:44,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731028292] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:05:44,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014361388] [2022-11-20 11:05:44,772 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:05:44,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:05:44,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:05:44,773 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:05:44,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 11:05:44,904 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 11:05:44,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:05:44,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-20 11:05:44,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:05:44,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:05:44,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:05:44,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:05:44,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-20 11:05:44,965 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-20 11:05:44,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-11-20 11:05:45,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:05:45,066 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 11:05:45,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2022-11-20 11:05:45,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 11:05:45,272 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:45,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:05:45,557 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:45,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014361388] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:05:45,557 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:05:45,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 23 [2022-11-20 11:05:45,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200029371] [2022-11-20 11:05:45,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:05:45,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 11:05:45,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:05:45,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 11:05:45,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2022-11-20 11:05:45,560 INFO L87 Difference]: Start difference. First operand 52 states and 90 transitions. Second operand has 25 states, 24 states have (on average 1.625) internal successors, (39), 24 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) [2022-11-20 11:05:46,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:05:46,784 INFO L93 Difference]: Finished difference Result 84 states and 130 transitions. [2022-11-20 11:05:46,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:05:46,784 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.625) internal successors, (39), 24 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 13 [2022-11-20 11:05:46,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:05:46,785 INFO L225 Difference]: With dead ends: 84 [2022-11-20 11:05:46,785 INFO L226 Difference]: Without dead ends: 84 [2022-11-20 11:05:46,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=363, Invalid=1529, Unknown=0, NotChecked=0, Total=1892 [2022-11-20 11:05:46,786 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 196 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:05:46,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 0 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 325 Invalid, 0 Unknown, 32 Unchecked, 0.3s Time] [2022-11-20 11:05:46,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-20 11:05:46,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 39. [2022-11-20 11:05:46,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 35 states have (on average 1.9428571428571428) internal successors, (68), 38 states have internal predecessors, (68), 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) [2022-11-20 11:05:46,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 68 transitions. [2022-11-20 11:05:46,789 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 68 transitions. Word has length 13 [2022-11-20 11:05:46,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:05:46,790 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 68 transitions. [2022-11-20 11:05:46,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.625) internal successors, (39), 24 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) [2022-11-20 11:05:46,790 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 68 transitions. [2022-11-20 11:05:46,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 11:05:46,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:05:46,790 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:05:46,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:05:46,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:05:46,991 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:05:46,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:05:46,992 INFO L85 PathProgramCache]: Analyzing trace with hash -2071711822, now seen corresponding path program 1 times [2022-11-20 11:05:46,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:05:46,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406231350] [2022-11-20 11:05:46,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:46,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:05:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:47,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:47,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:05:47,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406231350] [2022-11-20 11:05:47,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406231350] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:05:47,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354652989] [2022-11-20 11:05:47,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:47,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:05:47,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:05:47,443 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:05:47,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 11:05:47,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:47,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-20 11:05:47,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:05:47,657 INFO L321 Elim1Store]: treesize reduction 53, result has 32.9 percent of original size [2022-11-20 11:05:47,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 53 [2022-11-20 11:05:47,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:05:47,735 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 11:05:47,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 11:05:47,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:05:47,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:05:47,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 11:05:47,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:05:47,975 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:47,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:05:48,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:48,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354652989] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:05:48,220 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:05:48,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 18 [2022-11-20 11:05:48,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662944868] [2022-11-20 11:05:48,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:05:48,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:05:48,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:05:48,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:05:48,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=286, Unknown=3, NotChecked=0, Total=342 [2022-11-20 11:05:48,222 INFO L87 Difference]: Start difference. First operand 39 states and 68 transitions. Second operand has 19 states, 19 states have (on average 2.0) 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) [2022-11-20 11:05:48,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:05:48,503 INFO L93 Difference]: Finished difference Result 36 states and 63 transitions. [2022-11-20 11:05:48,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:05:48,504 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0) 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 [2022-11-20 11:05:48,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:05:48,505 INFO L225 Difference]: With dead ends: 36 [2022-11-20 11:05:48,505 INFO L226 Difference]: Without dead ends: 36 [2022-11-20 11:05:48,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=398, Unknown=3, NotChecked=0, Total=506 [2022-11-20 11:05:48,506 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:05:48,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 147 Invalid, 0 Unknown, 71 Unchecked, 0.1s Time] [2022-11-20 11:05:48,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-20 11:05:48,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-20 11:05:48,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 32 states have (on average 1.96875) internal successors, (63), 35 states have internal predecessors, (63), 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) [2022-11-20 11:05:48,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 63 transitions. [2022-11-20 11:05:48,509 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 63 transitions. Word has length 14 [2022-11-20 11:05:48,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:05:48,509 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 63 transitions. [2022-11-20 11:05:48,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0) 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) [2022-11-20 11:05:48,509 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 63 transitions. [2022-11-20 11:05:48,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 11:05:48,510 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:05:48,510 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:05:48,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:05:48,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-20 11:05:48,717 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:05:48,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:05:48,718 INFO L85 PathProgramCache]: Analyzing trace with hash -2071717971, now seen corresponding path program 1 times [2022-11-20 11:05:48,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:05:48,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739321745] [2022-11-20 11:05:48,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:48,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:05:48,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:48,980 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:48,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:05:48,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739321745] [2022-11-20 11:05:48,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739321745] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:05:48,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743641348] [2022-11-20 11:05:48,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:48,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:05:48,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:05:48,983 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:05:49,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 11:05:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:49,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 11:05:49,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:05:49,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:05:49,272 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:49,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:05:49,458 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:49,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743641348] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:05:49,459 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:05:49,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2022-11-20 11:05:49,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950971217] [2022-11-20 11:05:49,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:05:49,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:05:49,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:05:49,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:05:49,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:05:49,460 INFO L87 Difference]: Start difference. First operand 36 states and 63 transitions. Second operand has 20 states, 19 states have (on average 2.0) internal successors, (38), 20 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) [2022-11-20 11:05:49,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:05:49,879 INFO L93 Difference]: Finished difference Result 56 states and 75 transitions. [2022-11-20 11:05:49,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:05:49,880 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 20 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 [2022-11-20 11:05:49,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:05:49,880 INFO L225 Difference]: With dead ends: 56 [2022-11-20 11:05:49,880 INFO L226 Difference]: Without dead ends: 56 [2022-11-20 11:05:49,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=191, Invalid=565, Unknown=0, NotChecked=0, Total=756 [2022-11-20 11:05:49,881 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 86 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:05:49,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 0 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:05:49,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-20 11:05:49,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 36. [2022-11-20 11:05:49,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 32 states have (on average 1.84375) internal successors, (59), 35 states have internal predecessors, (59), 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) [2022-11-20 11:05:49,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 59 transitions. [2022-11-20 11:05:49,884 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 59 transitions. Word has length 14 [2022-11-20 11:05:49,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:05:49,884 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 59 transitions. [2022-11-20 11:05:49,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 20 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) [2022-11-20 11:05:49,885 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 59 transitions. [2022-11-20 11:05:49,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 11:05:49,885 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:05:49,885 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:05:49,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 11:05:50,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-20 11:05:50,091 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:05:50,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:05:50,091 INFO L85 PathProgramCache]: Analyzing trace with hash 201259685, now seen corresponding path program 2 times [2022-11-20 11:05:50,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:05:50,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212698074] [2022-11-20 11:05:50,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:50,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:05:50,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:50,646 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:50,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:05:50,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212698074] [2022-11-20 11:05:50,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212698074] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:05:50,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877669589] [2022-11-20 11:05:50,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:05:50,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:05:50,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:05:50,648 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:05:50,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 11:05:50,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:05:50,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:05:50,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-20 11:05:50,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:05:50,845 INFO L321 Elim1Store]: treesize reduction 40, result has 36.5 percent of original size [2022-11-20 11:05:50,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 34 [2022-11-20 11:05:50,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:05:50,983 INFO L321 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2022-11-20 11:05:50,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 44 [2022-11-20 11:05:51,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:05:51,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-20 11:05:51,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:05:51,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:05:51,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:05:51,262 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:51,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:05:51,301 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_543 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_543) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 1)))) is different from false [2022-11-20 11:05:51,307 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_543 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_543) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 2 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2022-11-20 11:05:51,312 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_543 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_543) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 3 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2022-11-20 11:05:51,488 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2022-11-20 11:05:51,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877669589] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:05:51,488 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:05:51,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 23 [2022-11-20 11:05:51,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938224945] [2022-11-20 11:05:51,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:05:51,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 11:05:51,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:05:51,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 11:05:51,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=364, Unknown=4, NotChecked=120, Total=552 [2022-11-20 11:05:51,490 INFO L87 Difference]: Start difference. First operand 36 states and 59 transitions. Second operand has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 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) [2022-11-20 11:05:52,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:05:52,096 INFO L93 Difference]: Finished difference Result 39 states and 61 transitions. [2022-11-20 11:05:52,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:05:52,096 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 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 15 [2022-11-20 11:05:52,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:05:52,097 INFO L225 Difference]: With dead ends: 39 [2022-11-20 11:05:52,097 INFO L226 Difference]: Without dead ends: 39 [2022-11-20 11:05:52,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=117, Invalid=647, Unknown=4, NotChecked=162, Total=930 [2022-11-20 11:05:52,098 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 107 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:05:52,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 0 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 191 Invalid, 0 Unknown, 107 Unchecked, 0.2s Time] [2022-11-20 11:05:52,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-20 11:05:52,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-11-20 11:05:52,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 35 states have (on average 1.7428571428571429) internal successors, (61), 38 states have internal predecessors, (61), 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) [2022-11-20 11:05:52,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 61 transitions. [2022-11-20 11:05:52,101 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 61 transitions. Word has length 15 [2022-11-20 11:05:52,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:05:52,101 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 61 transitions. [2022-11-20 11:05:52,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 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) [2022-11-20 11:05:52,102 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 61 transitions. [2022-11-20 11:05:52,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 11:05:52,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:05:52,102 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:05:52,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 11:05:52,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-20 11:05:52,307 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:05:52,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:05:52,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1658609769, now seen corresponding path program 3 times [2022-11-20 11:05:52,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:05:52,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889558533] [2022-11-20 11:05:52,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:52,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:05:52,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:52,821 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:52,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:05:52,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889558533] [2022-11-20 11:05:52,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889558533] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:05:52,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940842963] [2022-11-20 11:05:52,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:05:52,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:05:52,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:05:52,824 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:05:52,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 11:05:52,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 11:05:52,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:05:52,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-20 11:05:52,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:05:52,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:05:52,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:05:53,007 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-20 11:05:53,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-11-20 11:05:53,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:05:53,154 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:05:53,156 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:05:53,166 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-20 11:05:53,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 23 [2022-11-20 11:05:53,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:05:53,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:05:53,238 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:05:53,241 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 11:05:53,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-11-20 11:05:53,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:05:53,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:05:53,302 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:05:53,305 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 11:05:53,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2022-11-20 11:05:53,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:05:53,364 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 11:05:53,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2022-11-20 11:05:53,401 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:53,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:06:11,859 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:06:11,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940842963] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:06:11,859 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:06:11,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 22 [2022-11-20 11:06:11,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740433017] [2022-11-20 11:06:11,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:06:11,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 11:06:11,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:06:11,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 11:06:11,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=415, Unknown=7, NotChecked=0, Total=506 [2022-11-20 11:06:11,861 INFO L87 Difference]: Start difference. First operand 39 states and 61 transitions. Second operand has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 22 states have internal predecessors, (43), 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) [2022-11-20 11:06:12,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:12,550 INFO L93 Difference]: Finished difference Result 38 states and 59 transitions. [2022-11-20 11:06:12,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:06:12,551 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 22 states have internal predecessors, (43), 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 15 [2022-11-20 11:06:12,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:12,551 INFO L225 Difference]: With dead ends: 38 [2022-11-20 11:06:12,551 INFO L226 Difference]: Without dead ends: 38 [2022-11-20 11:06:12,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=196, Invalid=667, Unknown=7, NotChecked=0, Total=870 [2022-11-20 11:06:12,552 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 64 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:12,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 0 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 146 Invalid, 0 Unknown, 38 Unchecked, 0.2s Time] [2022-11-20 11:06:12,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-20 11:06:12,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2022-11-20 11:06:12,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 32 states have (on average 1.75) internal successors, (56), 34 states have internal predecessors, (56), 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) [2022-11-20 11:06:12,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2022-11-20 11:06:12,555 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 15 [2022-11-20 11:06:12,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:12,555 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2022-11-20 11:06:12,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 22 states have internal predecessors, (43), 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) [2022-11-20 11:06:12,555 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2022-11-20 11:06:12,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 11:06:12,556 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:12,556 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:06:12,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 11:06:12,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:06:12,762 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:06:12,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:12,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1943900018, now seen corresponding path program 2 times [2022-11-20 11:06:12,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:06:12,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27236773] [2022-11-20 11:06:12,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:12,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:06:12,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:14,358 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:06:14,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:06:14,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27236773] [2022-11-20 11:06:14,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27236773] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:06:14,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365593272] [2022-11-20 11:06:14,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:06:14,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:06:14,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:06:14,360 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:06:14,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 11:06:14,562 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:06:14,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:06:14,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-20 11:06:14,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:06:14,599 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 11:06:14,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-20 11:06:14,654 INFO L321 Elim1Store]: treesize reduction 40, result has 36.5 percent of original size [2022-11-20 11:06:14,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 34 [2022-11-20 11:06:14,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:14,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:06:14,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 11:06:14,770 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 11:06:14,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-20 11:06:14,858 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 11:06:14,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-20 11:06:15,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2022-11-20 11:06:15,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2022-11-20 11:06:15,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2022-11-20 11:06:15,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2022-11-20 11:06:15,513 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:06:15,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:06:16,081 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:06:16,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365593272] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:06:16,082 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:06:16,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2022-11-20 11:06:16,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296747614] [2022-11-20 11:06:16,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:06:16,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 11:06:16,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:06:16,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 11:06:16,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2022-11-20 11:06:16,083 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 25 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) [2022-11-20 11:06:17,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:17,155 INFO L93 Difference]: Finished difference Result 39 states and 59 transitions. [2022-11-20 11:06:17,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:06:17,155 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 25 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 [2022-11-20 11:06:17,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:17,160 INFO L225 Difference]: With dead ends: 39 [2022-11-20 11:06:17,160 INFO L226 Difference]: Without dead ends: 39 [2022-11-20 11:06:17,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=115, Invalid=877, Unknown=0, NotChecked=0, Total=992 [2022-11-20 11:06:17,162 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 153 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:17,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 0 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 112 Invalid, 0 Unknown, 153 Unchecked, 0.2s Time] [2022-11-20 11:06:17,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-20 11:06:17,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-11-20 11:06:17,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 36 states have (on average 1.6388888888888888) internal successors, (59), 38 states have internal predecessors, (59), 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) [2022-11-20 11:06:17,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 59 transitions. [2022-11-20 11:06:17,165 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 59 transitions. Word has length 16 [2022-11-20 11:06:17,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:17,165 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 59 transitions. [2022-11-20 11:06:17,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 25 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) [2022-11-20 11:06:17,166 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 59 transitions. [2022-11-20 11:06:17,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 11:06:17,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:17,166 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:06:17,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 11:06:17,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-20 11:06:17,372 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:06:17,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:17,373 INFO L85 PathProgramCache]: Analyzing trace with hash 122521792, now seen corresponding path program 3 times [2022-11-20 11:06:17,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:06:17,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269730119] [2022-11-20 11:06:17,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:17,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:06:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:18,392 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:06:18,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:06:18,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269730119] [2022-11-20 11:06:18,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269730119] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:06:18,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203858737] [2022-11-20 11:06:18,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:06:18,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:06:18,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:06:18,403 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:06:18,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 11:06:18,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 11:06:18,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:06:18,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-20 11:06:18,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:06:18,661 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-20 11:06:18,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-11-20 11:06:18,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:18,733 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 11:06:18,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 11:06:18,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:18,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:18,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:19,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:19,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:19,168 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:06:19,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:06:19,337 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_705 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_705) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 3 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2022-11-20 11:06:19,348 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_705 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_705) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 4)))) is different from false [2022-11-20 11:06:19,567 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2022-11-20 11:06:19,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203858737] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:06:19,568 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:06:19,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 24 [2022-11-20 11:06:19,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190045341] [2022-11-20 11:06:19,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:06:19,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 11:06:19,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:06:19,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 11:06:19,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=449, Unknown=10, NotChecked=86, Total=600 [2022-11-20 11:06:19,570 INFO L87 Difference]: Start difference. First operand 39 states and 59 transitions. Second operand has 25 states, 25 states have (on average 1.76) internal successors, (44), 24 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) [2022-11-20 11:06:20,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:20,709 INFO L93 Difference]: Finished difference Result 40 states and 59 transitions. [2022-11-20 11:06:20,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:06:20,709 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 24 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 [2022-11-20 11:06:20,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:20,710 INFO L225 Difference]: With dead ends: 40 [2022-11-20 11:06:20,710 INFO L226 Difference]: Without dead ends: 40 [2022-11-20 11:06:20,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=119, Invalid=808, Unknown=11, NotChecked=118, Total=1056 [2022-11-20 11:06:20,711 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 36 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 143 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:20,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 0 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 281 Invalid, 0 Unknown, 143 Unchecked, 0.3s Time] [2022-11-20 11:06:20,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-20 11:06:20,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2022-11-20 11:06:20,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 32 states have (on average 1.6875) internal successors, (54), 34 states have internal predecessors, (54), 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) [2022-11-20 11:06:20,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 54 transitions. [2022-11-20 11:06:20,714 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 54 transitions. Word has length 16 [2022-11-20 11:06:20,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:20,714 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 54 transitions. [2022-11-20 11:06:20,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 24 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) [2022-11-20 11:06:20,714 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 54 transitions. [2022-11-20 11:06:20,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 11:06:20,714 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:20,715 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:06:20,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-20 11:06:20,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-20 11:06:20,927 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:06:20,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:20,927 INFO L85 PathProgramCache]: Analyzing trace with hash 131175152, now seen corresponding path program 4 times [2022-11-20 11:06:20,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:06:20,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584127925] [2022-11-20 11:06:20,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:20,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:06:20,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:21,983 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:06:21,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:06:21,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584127925] [2022-11-20 11:06:21,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584127925] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:06:21,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993181727] [2022-11-20 11:06:21,984 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:06:21,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:06:21,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:06:21,985 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:06:21,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 11:06:22,192 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 11:06:22,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:06:22,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-20 11:06:22,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:06:22,298 INFO L321 Elim1Store]: treesize reduction 53, result has 32.9 percent of original size [2022-11-20 11:06:22,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 53 [2022-11-20 11:06:22,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:22,386 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 11:06:22,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 11:06:22,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:22,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:06:22,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:22,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:06:22,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:22,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:06:22,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:22,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:06:22,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:22,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:22,877 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:06:22,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:06:22,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-11-20 11:06:23,036 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_766 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_766) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 3 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2022-11-20 11:06:23,042 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_766 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_766) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 4)))) is different from false [2022-11-20 11:06:23,048 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_766 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_766) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 5 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2022-11-20 11:06:23,260 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 12 not checked. [2022-11-20 11:06:23,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993181727] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:06:23,261 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:06:23,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 27 [2022-11-20 11:06:23,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053132210] [2022-11-20 11:06:23,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:06:23,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 11:06:23,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:06:23,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 11:06:23,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=530, Unknown=8, NotChecked=144, Total=756 [2022-11-20 11:06:23,263 INFO L87 Difference]: Start difference. First operand 35 states and 54 transitions. Second operand has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 27 states have internal predecessors, (47), 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) [2022-11-20 11:06:24,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:24,802 INFO L93 Difference]: Finished difference Result 35 states and 52 transitions. [2022-11-20 11:06:24,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:06:24,803 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 27 states have internal predecessors, (47), 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 [2022-11-20 11:06:24,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:24,803 INFO L225 Difference]: With dead ends: 35 [2022-11-20 11:06:24,803 INFO L226 Difference]: Without dead ends: 35 [2022-11-20 11:06:24,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=159, Invalid=967, Unknown=8, NotChecked=198, Total=1332 [2022-11-20 11:06:24,805 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 49 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 184 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:24,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 0 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 273 Invalid, 0 Unknown, 184 Unchecked, 0.3s Time] [2022-11-20 11:06:24,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-20 11:06:24,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-11-20 11:06:24,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 32 states have (on average 1.625) internal successors, (52), 34 states have internal predecessors, (52), 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) [2022-11-20 11:06:24,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 52 transitions. [2022-11-20 11:06:24,808 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 52 transitions. Word has length 17 [2022-11-20 11:06:24,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:24,808 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 52 transitions. [2022-11-20 11:06:24,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 27 states have internal predecessors, (47), 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) [2022-11-20 11:06:24,809 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 52 transitions. [2022-11-20 11:06:24,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 11:06:24,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:24,809 INFO L195 NwaCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:06:24,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-20 11:06:25,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-20 11:06:25,016 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:06:25,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:25,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1932084439, now seen corresponding path program 5 times [2022-11-20 11:06:25,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:06:25,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236403672] [2022-11-20 11:06:25,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:25,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:06:25,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:26,157 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:06:26,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:06:26,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236403672] [2022-11-20 11:06:26,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236403672] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:06:26,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14423601] [2022-11-20 11:06:26,158 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 11:06:26,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:06:26,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:06:26,161 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:06:26,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 11:06:26,339 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-11-20 11:06:26,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:06:26,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-20 11:06:26,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:06:26,400 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-20 11:06:26,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-11-20 11:06:26,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:26,473 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 11:06:26,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 11:06:26,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:26,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:26,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:26,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:26,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:26,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:26,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:26,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:26,994 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:06:26,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:06:27,183 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_832 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_832) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 3 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)) 0)) is different from false [2022-11-20 11:06:27,349 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_832 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_832) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 6 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)) 0)) is different from false [2022-11-20 11:06:27,433 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_832 (Array Int Int))) (= (select (select (store |c_#memory_int| c_~v~0.base v_ArrVal_832) 3) 7) 0)) is different from false [2022-11-20 11:06:27,443 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_832 (Array Int Int)) (v_ArrVal_825 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_825) c_~v~0.base v_ArrVal_832) 3) 7) 0)) is different from false [2022-11-20 11:06:27,520 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 13 not checked. [2022-11-20 11:06:27,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14423601] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:06:27,520 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:06:27,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 35 [2022-11-20 11:06:27,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100752809] [2022-11-20 11:06:27,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:06:27,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-20 11:06:27,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:06:27,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-20 11:06:27,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=897, Unknown=22, NotChecked=252, Total=1260 [2022-11-20 11:06:27,522 INFO L87 Difference]: Start difference. First operand 35 states and 52 transitions. Second operand has 36 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 35 states have internal predecessors, (49), 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) [2022-11-20 11:06:28,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:28,512 INFO L93 Difference]: Finished difference Result 44 states and 57 transitions. [2022-11-20 11:06:28,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:06:28,513 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 35 states have internal predecessors, (49), 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 [2022-11-20 11:06:28,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:28,513 INFO L225 Difference]: With dead ends: 44 [2022-11-20 11:06:28,513 INFO L226 Difference]: Without dead ends: 44 [2022-11-20 11:06:28,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 11 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=131, Invalid=1123, Unknown=22, NotChecked=284, Total=1560 [2022-11-20 11:06:28,515 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 55 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 272 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:28,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 0 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 398 Invalid, 0 Unknown, 272 Unchecked, 0.4s Time] [2022-11-20 11:06:28,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-20 11:06:28,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2022-11-20 11:06:28,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 39 states have internal predecessors, (54), 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) [2022-11-20 11:06:28,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 54 transitions. [2022-11-20 11:06:28,518 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 54 transitions. Word has length 17 [2022-11-20 11:06:28,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:28,519 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 54 transitions. [2022-11-20 11:06:28,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 35 states have internal predecessors, (49), 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) [2022-11-20 11:06:28,519 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 54 transitions. [2022-11-20 11:06:28,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 11:06:28,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:28,520 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:06:28,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-20 11:06:28,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-20 11:06:28,723 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:06:28,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:28,724 INFO L85 PathProgramCache]: Analyzing trace with hash -228720846, now seen corresponding path program 5 times [2022-11-20 11:06:28,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:06:28,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786739057] [2022-11-20 11:06:28,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:28,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:06:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:30,037 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:06:30,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:06:30,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786739057] [2022-11-20 11:06:30,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786739057] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:06:30,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374570781] [2022-11-20 11:06:30,038 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 11:06:30,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:06:30,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:06:30,040 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:06:30,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-20 11:06:30,229 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-20 11:06:30,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:06:30,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-20 11:06:30,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:06:30,279 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-20 11:06:30,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-11-20 11:06:30,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:30,396 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-20 11:06:30,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-11-20 11:06:30,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:30,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:30,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:30,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:30,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 11:06:30,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:31,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:31,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:31,179 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:06:31,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:06:31,983 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:06:31,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374570781] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:06:31,983 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:06:31,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 31 [2022-11-20 11:06:31,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276590303] [2022-11-20 11:06:31,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:06:31,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 11:06:31,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:06:31,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 11:06:31,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=903, Unknown=4, NotChecked=0, Total=992 [2022-11-20 11:06:31,985 INFO L87 Difference]: Start difference. First operand 40 states and 54 transitions. Second operand has 32 states, 32 states have (on average 1.625) internal successors, (52), 31 states have internal predecessors, (52), 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) [2022-11-20 11:06:33,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:33,048 INFO L93 Difference]: Finished difference Result 59 states and 81 transitions. [2022-11-20 11:06:33,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:06:33,049 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.625) internal successors, (52), 31 states have internal predecessors, (52), 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 18 [2022-11-20 11:06:33,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:33,049 INFO L225 Difference]: With dead ends: 59 [2022-11-20 11:06:33,050 INFO L226 Difference]: Without dead ends: 59 [2022-11-20 11:06:33,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=149, Invalid=1653, Unknown=4, NotChecked=0, Total=1806 [2022-11-20 11:06:33,051 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:33,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 63 Unchecked, 0.1s Time] [2022-11-20 11:06:33,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-20 11:06:33,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-11-20 11:06:33,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 56 states have (on average 1.4464285714285714) internal successors, (81), 58 states have internal predecessors, (81), 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) [2022-11-20 11:06:33,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 81 transitions. [2022-11-20 11:06:33,055 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 81 transitions. Word has length 18 [2022-11-20 11:06:33,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:33,055 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 81 transitions. [2022-11-20 11:06:33,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.625) internal successors, (52), 31 states have internal predecessors, (52), 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) [2022-11-20 11:06:33,055 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 81 transitions. [2022-11-20 11:06:33,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 11:06:33,056 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:33,056 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:06:33,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-20 11:06:33,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-20 11:06:33,266 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:06:33,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:33,266 INFO L85 PathProgramCache]: Analyzing trace with hash 684620700, now seen corresponding path program 6 times [2022-11-20 11:06:33,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:06:33,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014909076] [2022-11-20 11:06:33,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:33,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:06:33,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:34,567 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:06:34,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:06:34,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014909076] [2022-11-20 11:06:34,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014909076] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:06:34,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373415410] [2022-11-20 11:06:34,568 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 11:06:34,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:06:34,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:06:34,569 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:06:34,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-20 11:06:34,746 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-20 11:06:34,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:06:34,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-20 11:06:34,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:06:34,804 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-20 11:06:34,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-11-20 11:06:34,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:34,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:06:34,911 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 11:06:34,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2022-11-20 11:06:34,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:35,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:35,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:35,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:35,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:35,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:35,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:35,418 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:06:35,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:06:35,469 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_964 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_964) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 1)))) is different from false [2022-11-20 11:06:35,557 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_964 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_964) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 3 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2022-11-20 11:06:35,562 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_964 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_964) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 4)))) is different from false [2022-11-20 11:06:35,568 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_964 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_964) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 5 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2022-11-20 11:06:35,573 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_964 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_964) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 6 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2022-11-20 11:06:35,797 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 20 not checked. [2022-11-20 11:06:35,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373415410] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:06:35,798 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:06:35,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2022-11-20 11:06:35,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188108288] [2022-11-20 11:06:35,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:06:35,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 11:06:35,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:06:35,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 11:06:35,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=634, Unknown=18, NotChecked=270, Total=992 [2022-11-20 11:06:35,800 INFO L87 Difference]: Start difference. First operand 59 states and 81 transitions. Second operand has 32 states, 32 states have (on average 1.5625) internal successors, (50), 31 states have internal predecessors, (50), 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) [2022-11-20 11:06:37,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:37,340 INFO L93 Difference]: Finished difference Result 77 states and 99 transitions. [2022-11-20 11:06:37,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:06:37,341 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.5625) internal successors, (50), 31 states have internal predecessors, (50), 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 18 [2022-11-20 11:06:37,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:37,341 INFO L225 Difference]: With dead ends: 77 [2022-11-20 11:06:37,342 INFO L226 Difference]: Without dead ends: 77 [2022-11-20 11:06:37,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=153, Invalid=1407, Unknown=20, NotChecked=400, Total=1980 [2022-11-20 11:06:37,343 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 185 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:37,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 0 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 292 Invalid, 0 Unknown, 185 Unchecked, 0.3s Time] [2022-11-20 11:06:37,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-11-20 11:06:37,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 65. [2022-11-20 11:06:37,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 62 states have (on average 1.403225806451613) internal successors, (87), 64 states have internal predecessors, (87), 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) [2022-11-20 11:06:37,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 87 transitions. [2022-11-20 11:06:37,347 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 87 transitions. Word has length 18 [2022-11-20 11:06:37,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:37,347 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 87 transitions. [2022-11-20 11:06:37,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.5625) internal successors, (50), 31 states have internal predecessors, (50), 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) [2022-11-20 11:06:37,347 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 87 transitions. [2022-11-20 11:06:37,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 11:06:37,348 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:37,348 INFO L195 NwaCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:06:37,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-20 11:06:37,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:06:37,554 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:06:37,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:37,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1773454587, now seen corresponding path program 2 times [2022-11-20 11:06:37,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:06:37,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593476139] [2022-11-20 11:06:37,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:37,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:06:37,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:38,327 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 28 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:06:38,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:06:38,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593476139] [2022-11-20 11:06:38,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593476139] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:06:38,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131548654] [2022-11-20 11:06:38,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:06:38,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:06:38,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:06:38,329 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:06:38,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-20 11:06:38,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:06:38,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:06:38,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-20 11:06:38,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:06:38,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:06:38,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:06:38,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:06:38,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-20 11:06:38,524 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-20 11:06:38,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-11-20 11:06:38,595 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 11:06:38,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-20 11:06:38,629 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-20 11:06:38,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 11:06:38,883 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-20 11:06:38,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:06:38,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131548654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:06:38,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:06:38,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 16 [2022-11-20 11:06:38,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828762969] [2022-11-20 11:06:38,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:06:38,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:06:38,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:06:38,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:06:38,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:06:38,885 INFO L87 Difference]: Start difference. First operand 65 states and 87 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-20 11:06:38,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:38,968 INFO L93 Difference]: Finished difference Result 74 states and 98 transitions. [2022-11-20 11:06:38,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:06:38,968 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 18 [2022-11-20 11:06:38,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:38,969 INFO L225 Difference]: With dead ends: 74 [2022-11-20 11:06:38,969 INFO L226 Difference]: Without dead ends: 74 [2022-11-20 11:06:38,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:06:38,970 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:38,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 24 Unchecked, 0.1s Time] [2022-11-20 11:06:38,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-20 11:06:38,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 67. [2022-11-20 11:06:38,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 64 states have (on average 1.4375) internal successors, (92), 66 states have internal predecessors, (92), 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) [2022-11-20 11:06:38,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 92 transitions. [2022-11-20 11:06:38,975 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 92 transitions. Word has length 18 [2022-11-20 11:06:38,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:38,975 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 92 transitions. [2022-11-20 11:06:38,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-20 11:06:38,975 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 92 transitions. [2022-11-20 11:06:38,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 11:06:38,976 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:38,976 INFO L195 NwaCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:06:38,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-20 11:06:39,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:06:39,179 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:06:39,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:39,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1773454517, now seen corresponding path program 1 times [2022-11-20 11:06:39,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:06:39,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941200260] [2022-11-20 11:06:39,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:39,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:06:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:40,307 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:06:40,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:06:40,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941200260] [2022-11-20 11:06:40,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941200260] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:06:40,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100912903] [2022-11-20 11:06:40,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:40,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:06:40,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:06:40,314 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:06:40,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-20 11:06:40,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:40,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-20 11:06:40,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:06:40,517 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-20 11:06:40,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-11-20 11:06:40,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:40,604 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-20 11:06:40,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 11:06:40,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:40,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:40,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:40,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:40,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:40,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:41,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:41,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:41,137 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:06:41,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:06:41,246 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1090 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_1090) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 2 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)) 0)) is different from false [2022-11-20 11:06:41,316 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1090 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_1090) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 4)) 0)) is different from false [2022-11-20 11:06:41,503 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1090 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_1090) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 7 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)) 0)) is different from false [2022-11-20 11:06:50,016 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 18 not checked. [2022-11-20 11:06:50,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100912903] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:06:50,016 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:06:50,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 35 [2022-11-20 11:06:50,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815816530] [2022-11-20 11:06:50,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:06:50,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-20 11:06:50,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:06:50,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-20 11:06:50,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=921, Unknown=61, NotChecked=192, Total=1260 [2022-11-20 11:06:50,018 INFO L87 Difference]: Start difference. First operand 67 states and 92 transitions. Second operand has 36 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 35 states have internal predecessors, (52), 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) [2022-11-20 11:06:51,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:51,103 INFO L93 Difference]: Finished difference Result 86 states and 107 transitions. [2022-11-20 11:06:51,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 11:06:51,104 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 35 states have internal predecessors, (52), 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 18 [2022-11-20 11:06:51,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:51,105 INFO L225 Difference]: With dead ends: 86 [2022-11-20 11:06:51,105 INFO L226 Difference]: Without dead ends: 86 [2022-11-20 11:06:51,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=139, Invalid=1365, Unknown=68, NotChecked=234, Total=1806 [2022-11-20 11:06:51,106 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 34 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 221 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:51,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 0 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 392 Invalid, 0 Unknown, 221 Unchecked, 0.4s Time] [2022-11-20 11:06:51,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-20 11:06:51,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 59. [2022-11-20 11:06:51,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 56 states have (on average 1.4464285714285714) internal successors, (81), 58 states have internal predecessors, (81), 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) [2022-11-20 11:06:51,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 81 transitions. [2022-11-20 11:06:51,110 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 81 transitions. Word has length 18 [2022-11-20 11:06:51,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:51,110 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 81 transitions. [2022-11-20 11:06:51,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 35 states have internal predecessors, (52), 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) [2022-11-20 11:06:51,110 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 81 transitions. [2022-11-20 11:06:51,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 11:06:51,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:51,111 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:06:51,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-20 11:06:51,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:06:51,317 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:06:51,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:51,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1833769396, now seen corresponding path program 7 times [2022-11-20 11:06:51,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:06:51,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345924538] [2022-11-20 11:06:51,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:51,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:06:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:52,392 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:06:52,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:06:52,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345924538] [2022-11-20 11:06:52,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345924538] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:06:52,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444001629] [2022-11-20 11:06:52,394 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 11:06:52,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:06:52,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:06:52,395 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:06:52,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-20 11:06:52,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:52,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-20 11:06:52,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:06:52,603 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-20 11:06:52,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-11-20 11:06:52,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:52,718 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-20 11:06:52,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 11:06:52,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:52,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:52,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:52,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:53,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:53,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:53,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:53,207 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:06:53,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:06:53,316 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1155 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_1155) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 2 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2022-11-20 11:06:53,524 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1155 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_1155) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 6 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2022-11-20 11:06:53,746 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 11 not checked. [2022-11-20 11:06:53,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444001629] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:06:53,746 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:06:53,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 30 [2022-11-20 11:06:53,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704351099] [2022-11-20 11:06:53,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:06:53,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-20 11:06:53,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:06:53,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-20 11:06:53,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=738, Unknown=13, NotChecked=110, Total=930 [2022-11-20 11:06:53,749 INFO L87 Difference]: Start difference. First operand 59 states and 81 transitions. Second operand has 31 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 30 states have internal predecessors, (50), 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) [2022-11-20 11:06:54,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:54,983 INFO L93 Difference]: Finished difference Result 65 states and 85 transitions. [2022-11-20 11:06:54,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:06:54,983 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 30 states have internal predecessors, (50), 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 18 [2022-11-20 11:06:54,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:54,984 INFO L225 Difference]: With dead ends: 65 [2022-11-20 11:06:54,984 INFO L226 Difference]: Without dead ends: 65 [2022-11-20 11:06:54,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=153, Invalid=1402, Unknown=13, NotChecked=154, Total=1722 [2022-11-20 11:06:54,986 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 187 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:54,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 379 Invalid, 0 Unknown, 187 Unchecked, 0.3s Time] [2022-11-20 11:06:54,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-20 11:06:54,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 52. [2022-11-20 11:06:54,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 51 states have internal predecessors, (70), 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) [2022-11-20 11:06:54,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 70 transitions. [2022-11-20 11:06:54,989 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 70 transitions. Word has length 18 [2022-11-20 11:06:54,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:54,990 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 70 transitions. [2022-11-20 11:06:54,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 30 states have internal predecessors, (50), 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) [2022-11-20 11:06:54,990 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 70 transitions. [2022-11-20 11:06:54,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 11:06:54,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:54,991 INFO L195 NwaCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:06:54,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-20 11:06:55,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:06:55,196 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:06:55,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:55,196 INFO L85 PathProgramCache]: Analyzing trace with hash 168406037, now seen corresponding path program 3 times [2022-11-20 11:06:55,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:06:55,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991236859] [2022-11-20 11:06:55,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:55,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:06:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:55,849 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 28 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:06:55,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:06:55,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991236859] [2022-11-20 11:06:55,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991236859] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:06:55,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748240084] [2022-11-20 11:06:55,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:06:55,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:06:55,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:06:55,850 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:06:55,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-20 11:06:55,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-20 11:06:55,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:06:55,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-20 11:06:55,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:06:56,033 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-20 11:06:56,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-11-20 11:06:56,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-20 11:06:56,077 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 11:06:56,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 11:06:56,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 11:06:56,306 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-20 11:06:56,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:06:56,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748240084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:06:56,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:06:56,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 15 [2022-11-20 11:06:56,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834853136] [2022-11-20 11:06:56,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:06:56,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:06:56,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:06:56,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:06:56,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:06:56,308 INFO L87 Difference]: Start difference. First operand 52 states and 70 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-20 11:06:56,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:06:56,442 INFO L93 Difference]: Finished difference Result 51 states and 69 transitions. [2022-11-20 11:06:56,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:06:56,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 18 [2022-11-20 11:06:56,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:06:56,443 INFO L225 Difference]: With dead ends: 51 [2022-11-20 11:06:56,443 INFO L226 Difference]: Without dead ends: 51 [2022-11-20 11:06:56,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:06:56,444 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:06:56,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 0 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:06:56,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-20 11:06:56,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-11-20 11:06:56,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 49 states have (on average 1.4081632653061225) internal successors, (69), 50 states have internal predecessors, (69), 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) [2022-11-20 11:06:56,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 69 transitions. [2022-11-20 11:06:56,446 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 69 transitions. Word has length 18 [2022-11-20 11:06:56,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:06:56,446 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 69 transitions. [2022-11-20 11:06:56,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-20 11:06:56,447 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 69 transitions. [2022-11-20 11:06:56,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 11:06:56,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:06:56,447 INFO L195 NwaCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:06:56,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-20 11:06:56,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:06:56,657 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:06:56,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:06:56,657 INFO L85 PathProgramCache]: Analyzing trace with hash 168405967, now seen corresponding path program 2 times [2022-11-20 11:06:56,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:06:56,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037414559] [2022-11-20 11:06:56,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:06:56,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:06:56,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:06:57,695 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:06:57,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:06:57,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037414559] [2022-11-20 11:06:57,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037414559] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:06:57,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622537601] [2022-11-20 11:06:57,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:06:57,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:06:57,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:06:57,699 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:06:57,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-20 11:06:57,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:06:57,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:06:57,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-20 11:06:57,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:06:57,907 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-20 11:06:57,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-11-20 11:06:57,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:58,023 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-20 11:06:58,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 11:06:58,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:58,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:58,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:58,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:58,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:58,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:58,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:58,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:06:58,522 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:06:58,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:06:58,563 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1281 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_1281) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 1)) 0)) is different from false [2022-11-20 11:06:58,568 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1281 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_1281) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 2 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)) 0)) is different from false [2022-11-20 11:06:58,698 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1281 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_1281) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 5 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)) 0)) is different from false [2022-11-20 11:06:58,703 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1281 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_1281) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 6 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)) 0)) is different from false [2022-11-20 11:06:58,714 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1281 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_1281) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 7 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)) 0)) is different from false [2022-11-20 11:06:58,794 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1274 (Array Int Int)) (v_ArrVal_1281 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1274) c_~v~0.base v_ArrVal_1281) 3) 7) 0)) is different from false [2022-11-20 11:06:58,890 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 25 not checked. [2022-11-20 11:06:58,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622537601] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:06:58,890 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:06:58,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 35 [2022-11-20 11:06:58,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644294379] [2022-11-20 11:06:58,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:06:58,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-20 11:06:58,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:06:58,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-20 11:06:58,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=785, Unknown=24, NotChecked=366, Total=1260 [2022-11-20 11:06:58,892 INFO L87 Difference]: Start difference. First operand 51 states and 69 transitions. Second operand has 36 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 35 states have internal predecessors, (52), 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) [2022-11-20 11:07:00,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:00,418 INFO L93 Difference]: Finished difference Result 74 states and 91 transitions. [2022-11-20 11:07:00,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 11:07:00,419 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 35 states have internal predecessors, (52), 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 18 [2022-11-20 11:07:00,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:00,420 INFO L225 Difference]: With dead ends: 74 [2022-11-20 11:07:00,420 INFO L226 Difference]: Without dead ends: 74 [2022-11-20 11:07:00,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 14 SyntacticMatches, 5 SemanticMatches, 48 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=195, Invalid=1691, Unknown=30, NotChecked=534, Total=2450 [2022-11-20 11:07:00,421 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 347 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:00,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 0 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 607 Invalid, 0 Unknown, 347 Unchecked, 0.5s Time] [2022-11-20 11:07:00,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-20 11:07:00,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 42. [2022-11-20 11:07:00,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 41 states have internal predecessors, (58), 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) [2022-11-20 11:07:00,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 58 transitions. [2022-11-20 11:07:00,423 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 58 transitions. Word has length 18 [2022-11-20 11:07:00,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:00,424 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 58 transitions. [2022-11-20 11:07:00,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 35 states have internal predecessors, (52), 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) [2022-11-20 11:07:00,424 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 58 transitions. [2022-11-20 11:07:00,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 11:07:00,424 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:00,424 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:00,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-20 11:07:00,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-11-20 11:07:00,625 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:07:00,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:00,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1607911862, now seen corresponding path program 8 times [2022-11-20 11:07:00,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:07:00,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31945822] [2022-11-20 11:07:00,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:00,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:07:00,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:01,726 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:01,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:07:01,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31945822] [2022-11-20 11:07:01,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31945822] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:07:01,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066074237] [2022-11-20 11:07:01,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:07:01,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:07:01,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:07:01,728 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:07:01,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-20 11:07:01,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:07:01,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:07:01,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-20 11:07:01,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:01,972 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-20 11:07:01,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-11-20 11:07:01,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:07:02,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:07:02,085 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 11:07:02,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2022-11-20 11:07:02,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:07:02,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:07:02,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:07:02,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:07:02,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:07:02,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:07:02,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:07:02,528 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:02,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:07:02,568 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1346 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_1346) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 1)))) is different from false [2022-11-20 11:07:02,573 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1346 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_1346) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 2 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2022-11-20 11:07:02,765 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1346 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_1346) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 6 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2022-11-20 11:07:02,974 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 15 not checked. [2022-11-20 11:07:02,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066074237] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:07:02,974 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:07:02,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 30 [2022-11-20 11:07:02,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541088785] [2022-11-20 11:07:02,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:07:02,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-20 11:07:02,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:07:02,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-20 11:07:02,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=684, Unknown=16, NotChecked=162, Total=930 [2022-11-20 11:07:02,976 INFO L87 Difference]: Start difference. First operand 42 states and 58 transitions. Second operand has 31 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 30 states have internal predecessors, (50), 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) [2022-11-20 11:07:04,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:04,103 INFO L93 Difference]: Finished difference Result 49 states and 64 transitions. [2022-11-20 11:07:04,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:07:04,103 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 30 states have internal predecessors, (50), 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 18 [2022-11-20 11:07:04,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:04,104 INFO L225 Difference]: With dead ends: 49 [2022-11-20 11:07:04,104 INFO L226 Difference]: Without dead ends: 49 [2022-11-20 11:07:04,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=135, Invalid=1342, Unknown=17, NotChecked=228, Total=1722 [2022-11-20 11:07:04,105 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 152 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:04,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 329 Invalid, 0 Unknown, 152 Unchecked, 0.3s Time] [2022-11-20 11:07:04,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-20 11:07:04,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2022-11-20 11:07:04,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 29 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) [2022-11-20 11:07:04,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2022-11-20 11:07:04,108 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 18 [2022-11-20 11:07:04,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:04,108 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2022-11-20 11:07:04,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 30 states have internal predecessors, (50), 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) [2022-11-20 11:07:04,108 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2022-11-20 11:07:04,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 11:07:04,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:04,109 INFO L195 NwaCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:04,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-20 11:07:04,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-20 11:07:04,310 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:07:04,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:04,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1499405104, now seen corresponding path program 9 times [2022-11-20 11:07:04,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:07:04,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107727224] [2022-11-20 11:07:04,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:04,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:07:04,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:07:04,340 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:07:04,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:07:04,387 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:07:04,391 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 11:07:04,400 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK (25 of 26 remaining) [2022-11-20 11:07:04,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE (24 of 26 remaining) [2022-11-20 11:07:04,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE (23 of 26 remaining) [2022-11-20 11:07:04,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (22 of 26 remaining) [2022-11-20 11:07:04,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE (21 of 26 remaining) [2022-11-20 11:07:04,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 26 remaining) [2022-11-20 11:07:04,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 26 remaining) [2022-11-20 11:07:04,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 26 remaining) [2022-11-20 11:07:04,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 26 remaining) [2022-11-20 11:07:04,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 26 remaining) [2022-11-20 11:07:04,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 26 remaining) [2022-11-20 11:07:04,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 26 remaining) [2022-11-20 11:07:04,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 26 remaining) [2022-11-20 11:07:04,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 26 remaining) [2022-11-20 11:07:04,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 26 remaining) [2022-11-20 11:07:04,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 26 remaining) [2022-11-20 11:07:04,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 26 remaining) [2022-11-20 11:07:04,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (8 of 26 remaining) [2022-11-20 11:07:04,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 26 remaining) [2022-11-20 11:07:04,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 26 remaining) [2022-11-20 11:07:04,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE (5 of 26 remaining) [2022-11-20 11:07:04,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE (4 of 26 remaining) [2022-11-20 11:07:04,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (3 of 26 remaining) [2022-11-20 11:07:04,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE (2 of 26 remaining) [2022-11-20 11:07:04,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 26 remaining) [2022-11-20 11:07:04,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 26 remaining) [2022-11-20 11:07:04,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-20 11:07:04,408 INFO L444 BasicCegarLoop]: Path program histogram: [9, 5, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:04,413 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 11:07:04,413 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:07:04,425 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:07:04,425 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:07:04,426 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:07:04,426 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:07:04,426 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:07:04,426 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:07:04,426 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:07:04,427 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:07:04,427 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:07:04,427 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:07:04,427 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:07:04,428 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:07:04,428 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:07:04,428 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:07:04,428 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:07:04,429 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:07:04,429 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:07:04,429 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:07:04,429 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:07:04,430 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:07:04,430 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:07:04,430 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:07:04,430 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:07:04,431 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:07:04,431 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:07:04,431 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:07:04,431 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:07:04,432 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:07:04,432 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:07:04,432 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:07:04,432 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:07:04,433 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:07:04,433 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled [2022-11-20 11:07:04,433 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled [2022-11-20 11:07:04,433 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:07:04,434 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:07:04,434 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:07:04,434 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:07:04,434 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled [2022-11-20 11:07:04,435 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled [2022-11-20 11:07:04,435 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:07:04,435 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:07:04,435 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:07:04,436 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:07:04,436 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled [2022-11-20 11:07:04,436 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled [2022-11-20 11:07:04,436 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:07:04,436 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:07:04,437 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:07:04,437 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:07:04,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:07:04 BasicIcfg [2022-11-20 11:07:04,454 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:07:04,455 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:07:04,455 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:07:04,455 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:07:04,456 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:05:22" (3/4) ... [2022-11-20 11:07:04,458 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 11:07:04,458 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:07:04,459 INFO L158 Benchmark]: Toolchain (without parser) took 103512.74ms. Allocated memory was 144.7MB in the beginning and 302.0MB in the end (delta: 157.3MB). Free memory was 114.6MB in the beginning and 207.9MB in the end (delta: -93.2MB). Peak memory consumption was 62.5MB. Max. memory is 16.1GB. [2022-11-20 11:07:04,459 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 100.7MB. Free memory is still 67.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:07:04,459 INFO L158 Benchmark]: CACSL2BoogieTranslator took 958.76ms. Allocated memory is still 144.7MB. Free memory was 114.6MB in the beginning and 82.1MB in the end (delta: 32.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-11-20 11:07:04,459 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.82ms. Allocated memory is still 144.7MB. Free memory was 82.1MB in the beginning and 79.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:07:04,459 INFO L158 Benchmark]: Boogie Preprocessor took 48.80ms. Allocated memory is still 144.7MB. Free memory was 79.5MB in the beginning and 77.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:07:04,459 INFO L158 Benchmark]: RCFGBuilder took 669.53ms. Allocated memory is still 144.7MB. Free memory was 77.9MB in the beginning and 104.9MB in the end (delta: -27.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-20 11:07:04,460 INFO L158 Benchmark]: TraceAbstraction took 101757.37ms. Allocated memory was 144.7MB in the beginning and 302.0MB in the end (delta: 157.3MB). Free memory was 103.9MB in the beginning and 207.9MB in the end (delta: -103.9MB). Peak memory consumption was 55.2MB. Max. memory is 16.1GB. [2022-11-20 11:07:04,460 INFO L158 Benchmark]: Witness Printer took 3.50ms. Allocated memory is still 302.0MB. Free memory is still 207.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:07:04,461 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 100.7MB. Free memory is still 67.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 958.76ms. Allocated memory is still 144.7MB. Free memory was 114.6MB in the beginning and 82.1MB in the end (delta: 32.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.82ms. Allocated memory is still 144.7MB. Free memory was 82.1MB in the beginning and 79.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.80ms. Allocated memory is still 144.7MB. Free memory was 79.5MB in the beginning and 77.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 669.53ms. Allocated memory is still 144.7MB. Free memory was 77.9MB in the beginning and 104.9MB in the end (delta: -27.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 101757.37ms. Allocated memory was 144.7MB in the beginning and 302.0MB in the end (delta: 157.3MB). Free memory was 103.9MB in the beginning and 207.9MB in the end (delta: -103.9MB). Peak memory consumption was 55.2MB. Max. memory is 16.1GB. * Witness Printer took 3.50ms. Allocated memory is still 302.0MB. Free memory is still 207.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.9s, 117 PlacesBefore, 39 PlacesAfterwards, 114 TransitionsBefore, 34 TransitionsAfterwards, 360 CoEnabledTransitionPairs, 6 FixpointIterations, 73 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 128 TotalNumberOfCompositions, 482 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 404, independent: 386, independent conditional: 0, independent unconditional: 386, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 239, independent: 228, independent conditional: 0, independent unconditional: 228, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 239, independent: 227, independent conditional: 0, independent unconditional: 227, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 12, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 49, independent: 4, independent conditional: 0, independent unconditional: 4, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 404, independent: 158, independent conditional: 0, independent unconditional: 158, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 239, unknown conditional: 0, unknown unconditional: 239] , Statistics on independence cache: Total cache size (in pairs): 13, Positive cache size: 11, Positive conditional cache size: 0, Positive unconditional cache size: 11, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, 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 - UnprovableResult [Line: 1119]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1107. Possible FailurePath: [L1108] 0 char *v; [L1121] 0 pthread_t t1, t2; [L1122] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, pthread_create(&t1, 0, thread1, 0)=-1, t1={16:0}, t2={15:0}, v={0:0}] [L1111] 1 v = malloc(sizeof(char) * 8) [L1112] 1 return 0; [L1123] 0 \read(t1) VAL [\read(t1)=-1, \result={0:0}, arg={0:0}, arg={0:0}, t1={16:0}, t2={15:0}, v={9:0}] [L1123] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\read(t1)=-1, \result={0:0}, arg={0:0}, arg={0:0}, t1={16:0}, t2={15:0}, v={9:0}] [L1124] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, pthread_create(&t2, 0, thread2, 0)=0, t1={16:0}, t2={15:0}, v={9:0}] [L1125] 0 \read(t2) VAL [\read(t2)=0, \result={0:0}, arg={0:0}, arg={0:0}, t1={16:0}, t2={15:0}, v={9:0}] [L1116] COND TRUE 2 \read(*v) [L1116] FCALL 2 strcpy(v, "Bigshot") [L1117] 2 return 0; [L1125] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\read(t2)=0, \result={0:0}, arg={0:0}, arg={0:0}, t1={16:0}, t2={15:0}, v={9:0}] [L1126] EXPR 0 v[0] [L1126] CALL 0 __VERIFIER_assert(v[0] == 'B') [L1107] COND FALSE 0 !(!expression) [L1126] RET 0 __VERIFIER_assert(v[0] == 'B') [L1127] 0 return 0; [L1127] 0 return 0; [L1127] 0 return 0; - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1107]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1124]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1122]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 148 locations, 26 error locations. Started 1 CEGAR loops. OverallTime: 101.6s, OverallIterations: 37, TraceHistogramMax: 8, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 20.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1606 SdHoareTripleChecker+Valid, 5.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1606 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 5.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2411 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 268 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5559 IncrementalHoareTripleChecker+Invalid, 8238 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 268 mSolverCounterUnsat, 4 mSDtfsCounter, 5559 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1129 GetRequests, 358 SyntacticMatches, 27 SemanticMatches, 744 ConstructedPredicates, 31 IntricatePredicates, 0 DeprecatedPredicates, 2659 ImplicationChecksByTransitivity, 56.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=31, InterpolantAutomatonStates: 325, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 36 MinimizatonAttempts, 345 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 64.9s InterpolantComputationTime, 827 NumberOfCodeBlocks, 801 NumberOfCodeBlocksAsserted, 84 NumberOfCheckSat, 1029 ConstructedInterpolants, 244 QuantifiedInterpolants, 20246 SizeOfPredicates, 165 NumberOfNonLiveVariables, 5718 ConjunctsInSsa, 890 ConjunctsInUnsatCore, 80 InterpolantComputations, 16 PerfectInterpolantSequences, 222/1012 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-20 11:07:04,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/bigshot_s2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN --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 fa644cc26c2bb4f900e6af52233648196eb4dff503d36a50559ddcf2a4270ffb --- 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-6b4ec56 [2022-11-20 11:07:06,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:07:06,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:07:06,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:07:06,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:07:06,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:07:06,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:07:06,743 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:07:06,745 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:07:06,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:07:06,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:07:06,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:07:06,748 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:07:06,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:07:06,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:07:06,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:07:06,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:07:06,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:07:06,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:07:06,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:07:06,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:07:06,780 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:07:06,784 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:07:06,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:07:06,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:07:06,796 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:07:06,796 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:07:06,797 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:07:06,798 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:07:06,799 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:07:06,801 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:07:06,803 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:07:06,803 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:07:06,804 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:07:06,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:07:06,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:07:06,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:07:06,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:07:06,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:07:06,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:07:06,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:07:06,811 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-20 11:07:06,846 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:07:06,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:07:06,848 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:07:06,848 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:07:06,849 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:07:06,849 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:07:06,850 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:07:06,850 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:07:06,851 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:07:06,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:07:06,852 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:07:06,852 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:07:06,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:07:06,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:07:06,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:07:06,853 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 11:07:06,854 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 11:07:06,854 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 11:07:06,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:07:06,855 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 11:07:06,855 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 11:07:06,855 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 11:07:06,855 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:07:06,856 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:07:06,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:07:06,856 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:07:06,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:07:06,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:07:06,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:07:06,857 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:07:06,858 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 11:07:06,858 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 11:07:06,858 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 11:07:06,859 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa644cc26c2bb4f900e6af52233648196eb4dff503d36a50559ddcf2a4270ffb [2022-11-20 11:07:07,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:07:07,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:07:07,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:07:07,296 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:07:07,297 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:07:07,299 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread/bigshot_s2.i [2022-11-20 11:07:10,317 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:07:10,624 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:07:10,624 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/sv-benchmarks/c/pthread/bigshot_s2.i [2022-11-20 11:07:10,653 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/data/4ea9ff8ec/e0bc61f0d0c747029de1c311de474d4e/FLAG4d991e6c9 [2022-11-20 11:07:10,674 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/data/4ea9ff8ec/e0bc61f0d0c747029de1c311de474d4e [2022-11-20 11:07:10,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:07:10,684 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:07:10,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:07:10,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:07:10,691 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:07:10,692 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:07:10" (1/1) ... [2022-11-20 11:07:10,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33c95e8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:10, skipping insertion in model container [2022-11-20 11:07:10,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:07:10" (1/1) ... [2022-11-20 11:07:10,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:07:10,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:07:11,458 WARN L237 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_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/sv-benchmarks/c/pthread/bigshot_s2.i[55203,55216] [2022-11-20 11:07:11,484 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:07:11,507 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:07:11,568 WARN L237 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_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/sv-benchmarks/c/pthread/bigshot_s2.i[55203,55216] [2022-11-20 11:07:11,585 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:07:11,697 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:07:11,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:11 WrapperNode [2022-11-20 11:07:11,698 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:07:11,699 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:07:11,700 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:07:11,700 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:07:11,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:11" (1/1) ... [2022-11-20 11:07:11,734 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:11" (1/1) ... [2022-11-20 11:07:11,756 INFO L138 Inliner]: procedures = 327, calls = 33, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 76 [2022-11-20 11:07:11,757 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:07:11,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:07:11,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:07:11,758 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:07:11,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:11" (1/1) ... [2022-11-20 11:07:11,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:11" (1/1) ... [2022-11-20 11:07:11,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:11" (1/1) ... [2022-11-20 11:07:11,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:11" (1/1) ... [2022-11-20 11:07:11,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:11" (1/1) ... [2022-11-20 11:07:11,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:11" (1/1) ... [2022-11-20 11:07:11,787 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:11" (1/1) ... [2022-11-20 11:07:11,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:11" (1/1) ... [2022-11-20 11:07:11,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:07:11,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:07:11,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:07:11,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:07:11,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:11" (1/1) ... [2022-11-20 11:07:11,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:07:11,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:07:11,836 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:07:11,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:07:11,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-20 11:07:11,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 11:07:11,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:07:11,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:07:11,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 11:07:11,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 11:07:11,878 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 11:07:11,884 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 11:07:11,884 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 11:07:11,885 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 11:07:11,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-20 11:07:11,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:07:11,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:07:11,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:07:11,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:07:11,888 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:07:12,055 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:07:12,057 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:07:12,540 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:07:12,548 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:07:12,548 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 11:07:12,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:07:12 BoogieIcfgContainer [2022-11-20 11:07:12,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:07:12,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:07:12,554 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:07:12,557 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:07:12,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:07:10" (1/3) ... [2022-11-20 11:07:12,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3647e5ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:07:12, skipping insertion in model container [2022-11-20 11:07:12,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:11" (2/3) ... [2022-11-20 11:07:12,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3647e5ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:07:12, skipping insertion in model container [2022-11-20 11:07:12,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:07:12" (3/3) ... [2022-11-20 11:07:12,561 INFO L112 eAbstractionObserver]: Analyzing ICFG bigshot_s2.i [2022-11-20 11:07:12,580 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:07:12,581 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-20 11:07:12,581 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:07:12,680 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 11:07:12,715 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 11:07:12,747 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 115 transitions, 246 flow [2022-11-20 11:07:12,750 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 115 transitions, 246 flow [2022-11-20 11:07:12,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 115 transitions, 246 flow [2022-11-20 11:07:12,831 INFO L130 PetriNetUnfolder]: 4/113 cut-off events. [2022-11-20 11:07:12,831 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 11:07:12,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 113 events. 4/113 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 135 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2022-11-20 11:07:12,841 INFO L119 LiptonReduction]: Number of co-enabled transitions 360 [2022-11-20 11:07:26,593 INFO L134 LiptonReduction]: Checked pairs total: 461 [2022-11-20 11:07:26,594 INFO L136 LiptonReduction]: Total number of compositions: 129 [2022-11-20 11:07:26,603 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 34 transitions, 84 flow [2022-11-20 11:07:26,619 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 57 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 56 states have internal predecessors, (91), 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) [2022-11-20 11:07:26,637 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:07:26,644 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;@2c0f7e23, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:07:26,645 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-11-20 11:07:26,647 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 56 states have internal predecessors, (91), 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) [2022-11-20 11:07:26,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-20 11:07:26,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:26,654 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-20 11:07:26,654 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:07:26,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:26,661 INFO L85 PathProgramCache]: Analyzing trace with hash 443, now seen corresponding path program 1 times [2022-11-20 11:07:26,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:07:26,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1059676049] [2022-11-20 11:07:26,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:26,688 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:26,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:07:26,695 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:07:26,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-20 11:07:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:26,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 11:07:26,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:26,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:26,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:07:26,819 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:07:26,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1059676049] [2022-11-20 11:07:26,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1059676049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:07:26,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:07:26,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-20 11:07:26,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340991769] [2022-11-20 11:07:26,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:07:26,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:07:26,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:07:26,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:07:26,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:07:26,867 INFO L87 Difference]: Start difference. First operand has 57 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 56 states have internal predecessors, (91), 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) [2022-11-20 11:07:27,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:27,035 INFO L93 Difference]: Finished difference Result 47 states and 75 transitions. [2022-11-20 11:07:27,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:07:27,038 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 [2022-11-20 11:07:27,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:27,047 INFO L225 Difference]: With dead ends: 47 [2022-11-20 11:07:27,047 INFO L226 Difference]: Without dead ends: 47 [2022-11-20 11:07:27,048 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 [2022-11-20 11:07:27,052 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:27,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:07:27,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-20 11:07:27,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-11-20 11:07:27,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 25 states have (on average 3.0) internal successors, (75), 46 states have internal predecessors, (75), 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) [2022-11-20 11:07:27,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 75 transitions. [2022-11-20 11:07:27,127 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 75 transitions. Word has length 1 [2022-11-20 11:07:27,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:27,128 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 75 transitions. [2022-11-20 11:07:27,128 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) [2022-11-20 11:07:27,128 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 75 transitions. [2022-11-20 11:07:27,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 11:07:27,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:27,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 11:07:27,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:07:27,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:27,342 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:07:27,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:27,343 INFO L85 PathProgramCache]: Analyzing trace with hash 436780, now seen corresponding path program 1 times [2022-11-20 11:07:27,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:07:27,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1676248122] [2022-11-20 11:07:27,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:27,344 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:27,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:07:27,346 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:07:27,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-20 11:07:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:27,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:07:27,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:27,564 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 11:07:27,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2022-11-20 11:07:27,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:27,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:07:27,583 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:07:27,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1676248122] [2022-11-20 11:07:27,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1676248122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:07:27,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:07:27,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:07:27,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174418534] [2022-11-20 11:07:27,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:07:27,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:07:27,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:07:27,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:07:27,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:07:27,587 INFO L87 Difference]: Start difference. First operand 47 states and 75 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) [2022-11-20 11:07:27,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:27,689 INFO L93 Difference]: Finished difference Result 45 states and 72 transitions. [2022-11-20 11:07:27,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:07:27,690 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 [2022-11-20 11:07:27,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:27,691 INFO L225 Difference]: With dead ends: 45 [2022-11-20 11:07:27,691 INFO L226 Difference]: Without dead ends: 45 [2022-11-20 11:07:27,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:07:27,693 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:27,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 0 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:07:27,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-20 11:07:27,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-11-20 11:07:27,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 24 states have (on average 3.0) internal successors, (72), 44 states have internal predecessors, (72), 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) [2022-11-20 11:07:27,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 72 transitions. [2022-11-20 11:07:27,700 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 72 transitions. Word has length 3 [2022-11-20 11:07:27,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:27,701 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 72 transitions. [2022-11-20 11:07:27,701 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) [2022-11-20 11:07:27,701 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 72 transitions. [2022-11-20 11:07:27,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 11:07:27,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:27,702 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 11:07:27,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:07:27,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:27,913 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:07:27,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:27,914 INFO L85 PathProgramCache]: Analyzing trace with hash 436781, now seen corresponding path program 1 times [2022-11-20 11:07:27,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:07:27,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242166512] [2022-11-20 11:07:27,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:27,915 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:27,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:07:27,921 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:07:27,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-20 11:07:28,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:28,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:07:28,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:28,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:28,046 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:07:28,046 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:07:28,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242166512] [2022-11-20 11:07:28,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [242166512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:07:28,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:07:28,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:07:28,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194032635] [2022-11-20 11:07:28,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:07:28,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:07:28,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:07:28,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:07:28,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:07:28,048 INFO L87 Difference]: Start difference. First operand 45 states and 72 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) [2022-11-20 11:07:28,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:28,358 INFO L93 Difference]: Finished difference Result 81 states and 133 transitions. [2022-11-20 11:07:28,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:07:28,361 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 [2022-11-20 11:07:28,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:28,362 INFO L225 Difference]: With dead ends: 81 [2022-11-20 11:07:28,362 INFO L226 Difference]: Without dead ends: 81 [2022-11-20 11:07:28,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:07:28,364 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 21 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:28,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 2 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:07:28,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-20 11:07:28,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 44. [2022-11-20 11:07:28,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 43 states have internal predecessors, (70), 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) [2022-11-20 11:07:28,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 70 transitions. [2022-11-20 11:07:28,375 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 70 transitions. Word has length 3 [2022-11-20 11:07:28,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:28,377 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 70 transitions. [2022-11-20 11:07:28,378 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) [2022-11-20 11:07:28,379 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 70 transitions. [2022-11-20 11:07:28,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 11:07:28,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:28,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 11:07:28,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:07:28,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:28,591 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:07:28,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:28,592 INFO L85 PathProgramCache]: Analyzing trace with hash 13541752, now seen corresponding path program 1 times [2022-11-20 11:07:28,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:07:28,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1376318451] [2022-11-20 11:07:28,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:28,593 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:28,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:07:28,594 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:07:28,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-20 11:07:28,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:28,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 11:07:28,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:28,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:07:28,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-20 11:07:28,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-20 11:07:28,792 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 11:07:28,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 23 [2022-11-20 11:07:28,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:28,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:07:28,872 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:07:28,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1376318451] [2022-11-20 11:07:28,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1376318451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:07:28,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:07:28,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:07:28,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507206439] [2022-11-20 11:07:28,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:07:28,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:07:28,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:07:28,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:07:28,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:07:28,874 INFO L87 Difference]: Start difference. First operand 44 states and 70 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-20 11:07:29,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:29,048 INFO L93 Difference]: Finished difference Result 44 states and 70 transitions. [2022-11-20 11:07:29,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:07:29,050 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2022-11-20 11:07:29,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:29,050 INFO L225 Difference]: With dead ends: 44 [2022-11-20 11:07:29,050 INFO L226 Difference]: Without dead ends: 44 [2022-11-20 11:07:29,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:07:29,054 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:29,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 26 Unchecked, 0.2s Time] [2022-11-20 11:07:29,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-20 11:07:29,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2022-11-20 11:07:29,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 23 states have (on average 3.0) internal successors, (69), 42 states have internal predecessors, (69), 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) [2022-11-20 11:07:29,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 69 transitions. [2022-11-20 11:07:29,060 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 69 transitions. Word has length 4 [2022-11-20 11:07:29,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:29,061 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 69 transitions. [2022-11-20 11:07:29,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-20 11:07:29,061 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 69 transitions. [2022-11-20 11:07:29,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 11:07:29,062 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:29,062 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 11:07:29,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:07:29,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:29,274 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:07:29,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:29,274 INFO L85 PathProgramCache]: Analyzing trace with hash 128729093, now seen corresponding path program 1 times [2022-11-20 11:07:29,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:07:29,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [473585527] [2022-11-20 11:07:29,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:29,275 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:29,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:07:29,276 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:07:29,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-20 11:07:29,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:29,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:07:29,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:29,431 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 11:07:29,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-20 11:07:29,456 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 11:07:29,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 19 [2022-11-20 11:07:29,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:07:29,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 11:07:29,523 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 11:07:29,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-20 11:07:29,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:29,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:07:29,548 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:07:29,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [473585527] [2022-11-20 11:07:29,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [473585527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:07:29,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:07:29,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:07:29,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090837189] [2022-11-20 11:07:29,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:07:29,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:07:29,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:07:29,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:07:29,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:07:29,550 INFO L87 Difference]: Start difference. First operand 43 states and 69 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-20 11:07:29,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:29,644 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2022-11-20 11:07:29,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:07:29,645 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-11-20 11:07:29,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:29,646 INFO L225 Difference]: With dead ends: 27 [2022-11-20 11:07:29,646 INFO L226 Difference]: Without dead ends: 27 [2022-11-20 11:07:29,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:07:29,647 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:29,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:07:29,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-20 11:07:29,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-20 11:07:29,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 26 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) [2022-11-20 11:07:29,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2022-11-20 11:07:29,651 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 6 [2022-11-20 11:07:29,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:29,651 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2022-11-20 11:07:29,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-20 11:07:29,652 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2022-11-20 11:07:29,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 11:07:29,652 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:29,652 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:29,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:07:29,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:29,861 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:07:29,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:29,862 INFO L85 PathProgramCache]: Analyzing trace with hash -437069751, now seen corresponding path program 1 times [2022-11-20 11:07:29,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:07:29,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [439893855] [2022-11-20 11:07:29,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:29,863 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:29,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:07:29,864 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:07:29,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-20 11:07:29,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:29,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:07:29,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:29,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:07:30,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:30,031 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:07:30,032 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:07:30,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [439893855] [2022-11-20 11:07:30,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [439893855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:07:30,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:07:30,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:07:30,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773647301] [2022-11-20 11:07:30,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:07:30,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:07:30,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:07:30,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:07:30,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:07:30,034 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-11-20 11:07:30,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:30,185 INFO L93 Difference]: Finished difference Result 40 states and 55 transitions. [2022-11-20 11:07:30,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:07:30,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2022-11-20 11:07:30,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:30,186 INFO L225 Difference]: With dead ends: 40 [2022-11-20 11:07:30,186 INFO L226 Difference]: Without dead ends: 40 [2022-11-20 11:07:30,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:07:30,187 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 27 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:30,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 2 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:07:30,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-20 11:07:30,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 28. [2022-11-20 11:07:30,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 2.238095238095238) internal successors, (47), 27 states have internal predecessors, (47), 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) [2022-11-20 11:07:30,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 47 transitions. [2022-11-20 11:07:30,195 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 47 transitions. Word has length 9 [2022-11-20 11:07:30,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:30,196 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 47 transitions. [2022-11-20 11:07:30,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-11-20 11:07:30,196 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 47 transitions. [2022-11-20 11:07:30,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 11:07:30,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:30,197 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:30,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:07:30,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:30,403 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:07:30,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:30,403 INFO L85 PathProgramCache]: Analyzing trace with hash -437069861, now seen corresponding path program 1 times [2022-11-20 11:07:30,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:07:30,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [174540444] [2022-11-20 11:07:30,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:30,404 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:30,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:07:30,410 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:07:30,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-20 11:07:30,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:30,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:07:30,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:30,577 INFO L321 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2022-11-20 11:07:30,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 42 [2022-11-20 11:07:30,640 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 11:07:30,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-20 11:07:30,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:30,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:07:30,794 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:07:30,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [174540444] [2022-11-20 11:07:30,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [174540444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:07:30,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:07:30,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:07:30,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975915112] [2022-11-20 11:07:30,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:07:30,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:07:30,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:07:30,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:07:30,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:07:30,796 INFO L87 Difference]: Start difference. First operand 28 states and 47 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) [2022-11-20 11:07:30,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:30,924 INFO L93 Difference]: Finished difference Result 31 states and 47 transitions. [2022-11-20 11:07:30,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:07:30,925 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 9 [2022-11-20 11:07:30,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:30,926 INFO L225 Difference]: With dead ends: 31 [2022-11-20 11:07:30,926 INFO L226 Difference]: Without dead ends: 31 [2022-11-20 11:07:30,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:07:30,927 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:30,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 0 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:07:30,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-20 11:07:30,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2022-11-20 11:07:30,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 2.1) internal successors, (42), 25 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) [2022-11-20 11:07:30,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 42 transitions. [2022-11-20 11:07:30,930 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 42 transitions. Word has length 9 [2022-11-20 11:07:30,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:30,931 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 42 transitions. [2022-11-20 11:07:30,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) [2022-11-20 11:07:30,931 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 42 transitions. [2022-11-20 11:07:30,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 11:07:30,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:30,932 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:30,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:07:31,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:31,144 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:07:31,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:31,144 INFO L85 PathProgramCache]: Analyzing trace with hash -437069780, now seen corresponding path program 1 times [2022-11-20 11:07:31,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:07:31,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2143700344] [2022-11-20 11:07:31,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:31,145 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:31,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:07:31,146 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:07:31,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-20 11:07:31,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:31,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:07:31,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:31,249 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-20 11:07:31,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:31,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:07:31,276 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:07:31,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2143700344] [2022-11-20 11:07:31,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2143700344] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:07:31,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:07:31,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:07:31,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708083715] [2022-11-20 11:07:31,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:07:31,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:07:31,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:07:31,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:07:31,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:07:31,279 INFO L87 Difference]: Start difference. First operand 26 states and 42 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-11-20 11:07:31,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:31,399 INFO L93 Difference]: Finished difference Result 27 states and 40 transitions. [2022-11-20 11:07:31,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:07:31,400 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2022-11-20 11:07:31,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:31,401 INFO L225 Difference]: With dead ends: 27 [2022-11-20 11:07:31,401 INFO L226 Difference]: Without dead ends: 27 [2022-11-20 11:07:31,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:07:31,402 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:31,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:07:31,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-20 11:07:31,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2022-11-20 11:07:31,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.894736842105263) internal successors, (36), 22 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) [2022-11-20 11:07:31,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 36 transitions. [2022-11-20 11:07:31,404 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 36 transitions. Word has length 9 [2022-11-20 11:07:31,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:31,404 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 36 transitions. [2022-11-20 11:07:31,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-11-20 11:07:31,405 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 36 transitions. [2022-11-20 11:07:31,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 11:07:31,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:31,405 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:31,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:07:31,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:31,606 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:07:31,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:31,606 INFO L85 PathProgramCache]: Analyzing trace with hash -437069805, now seen corresponding path program 1 times [2022-11-20 11:07:31,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:07:31,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55662621] [2022-11-20 11:07:31,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:31,607 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:31,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:07:31,609 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:07:31,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-20 11:07:31,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:31,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 11:07:31,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:31,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:07:31,794 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-20 11:07:31,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-20 11:07:31,852 INFO L321 Elim1Store]: treesize reduction 52, result has 30.7 percent of original size [2022-11-20 11:07:31,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 38 [2022-11-20 11:07:32,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:07:32,028 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-20 11:07:32,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 38 [2022-11-20 11:07:32,076 INFO L321 Elim1Store]: treesize reduction 6, result has 80.6 percent of original size [2022-11-20 11:07:32,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 53 [2022-11-20 11:07:32,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:32,384 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:07:32,384 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:07:32,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [55662621] [2022-11-20 11:07:32,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [55662621] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:07:32,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:07:32,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:07:32,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221309437] [2022-11-20 11:07:32,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:07:32,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:07:32,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:07:32,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:07:32,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:07:32,386 INFO L87 Difference]: Start difference. First operand 23 states and 36 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-11-20 11:07:32,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:32,424 INFO L93 Difference]: Finished difference Result 28 states and 45 transitions. [2022-11-20 11:07:32,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:07:32,425 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2022-11-20 11:07:32,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:32,426 INFO L225 Difference]: With dead ends: 28 [2022-11-20 11:07:32,427 INFO L226 Difference]: Without dead ends: 28 [2022-11-20 11:07:32,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:07:32,427 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:32,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 23 Unchecked, 0.0s Time] [2022-11-20 11:07:32,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-20 11:07:32,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-20 11:07:32,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 24 states have (on average 1.875) internal successors, (45), 27 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) [2022-11-20 11:07:32,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 45 transitions. [2022-11-20 11:07:32,431 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 45 transitions. Word has length 9 [2022-11-20 11:07:32,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:32,431 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 45 transitions. [2022-11-20 11:07:32,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-11-20 11:07:32,432 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 45 transitions. [2022-11-20 11:07:32,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 11:07:32,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:32,432 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:32,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:07:32,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:32,633 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:07:32,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:32,633 INFO L85 PathProgramCache]: Analyzing trace with hash -432312637, now seen corresponding path program 2 times [2022-11-20 11:07:32,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:07:32,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516064446] [2022-11-20 11:07:32,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:07:32,634 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:32,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:07:32,635 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:07:32,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-20 11:07:32,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:07:32,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:07:32,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 11:07:32,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:32,826 INFO L321 Elim1Store]: treesize reduction 52, result has 30.7 percent of original size [2022-11-20 11:07:32,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 38 [2022-11-20 11:07:32,872 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-20 11:07:32,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-20 11:07:32,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:07:33,010 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-20 11:07:33,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 38 [2022-11-20 11:07:33,059 INFO L321 Elim1Store]: treesize reduction 6, result has 80.6 percent of original size [2022-11-20 11:07:33,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 53 [2022-11-20 11:07:33,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:33,332 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:07:33,332 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:07:33,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516064446] [2022-11-20 11:07:33,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516064446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:07:33,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:07:33,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:07:33,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723352561] [2022-11-20 11:07:33,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:07:33,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:07:33,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:07:33,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:07:33,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:07:33,334 INFO L87 Difference]: Start difference. First operand 28 states and 45 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-11-20 11:07:33,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:33,395 INFO L93 Difference]: Finished difference Result 46 states and 67 transitions. [2022-11-20 11:07:33,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:07:33,396 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2022-11-20 11:07:33,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:33,397 INFO L225 Difference]: With dead ends: 46 [2022-11-20 11:07:33,397 INFO L226 Difference]: Without dead ends: 46 [2022-11-20 11:07:33,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:07:33,398 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 94 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:33,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 94 Unchecked, 0.1s Time] [2022-11-20 11:07:33,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-20 11:07:33,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 30. [2022-11-20 11:07:33,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 29 states have internal predecessors, (48), 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) [2022-11-20 11:07:33,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 48 transitions. [2022-11-20 11:07:33,402 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 48 transitions. Word has length 9 [2022-11-20 11:07:33,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:33,402 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 48 transitions. [2022-11-20 11:07:33,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-11-20 11:07:33,403 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 48 transitions. [2022-11-20 11:07:33,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 11:07:33,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:33,403 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:33,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-20 11:07:33,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:33,612 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:07:33,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:33,613 INFO L85 PathProgramCache]: Analyzing trace with hash -664276939, now seen corresponding path program 1 times [2022-11-20 11:07:33,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:07:33,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2132097796] [2022-11-20 11:07:33,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:33,613 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:33,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:07:33,617 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:07:33,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-20 11:07:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:33,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 11:07:33,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:33,806 INFO L321 Elim1Store]: treesize reduction 52, result has 30.7 percent of original size [2022-11-20 11:07:33,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 38 [2022-11-20 11:07:33,854 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-20 11:07:33,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-20 11:07:33,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:07:34,029 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-20 11:07:34,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 38 [2022-11-20 11:07:34,084 INFO L321 Elim1Store]: treesize reduction 6, result has 80.6 percent of original size [2022-11-20 11:07:34,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 53 [2022-11-20 11:07:34,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:34,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:07:34,366 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:07:34,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2132097796] [2022-11-20 11:07:34,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2132097796] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:07:34,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:07:34,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:07:34,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155416604] [2022-11-20 11:07:34,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:07:34,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:07:34,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:07:34,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:07:34,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:07:34,368 INFO L87 Difference]: Start difference. First operand 30 states and 48 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-11-20 11:07:34,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:34,398 INFO L93 Difference]: Finished difference Result 31 states and 50 transitions. [2022-11-20 11:07:34,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:07:34,399 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2022-11-20 11:07:34,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:34,399 INFO L225 Difference]: With dead ends: 31 [2022-11-20 11:07:34,399 INFO L226 Difference]: Without dead ends: 31 [2022-11-20 11:07:34,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:07:34,400 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:34,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 22 Unchecked, 0.0s Time] [2022-11-20 11:07:34,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-20 11:07:34,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2022-11-20 11:07:34,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 25 states have (on average 1.84) internal successors, (46), 28 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) [2022-11-20 11:07:34,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 46 transitions. [2022-11-20 11:07:34,403 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 46 transitions. Word has length 10 [2022-11-20 11:07:34,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:34,403 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 46 transitions. [2022-11-20 11:07:34,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-11-20 11:07:34,404 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 46 transitions. [2022-11-20 11:07:34,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 11:07:34,404 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:34,404 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:34,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-20 11:07:34,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:34,613 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:07:34,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:34,614 INFO L85 PathProgramCache]: Analyzing trace with hash -664260199, now seen corresponding path program 2 times [2022-11-20 11:07:34,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:07:34,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1374735198] [2022-11-20 11:07:34,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:07:34,614 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:34,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:07:34,615 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:07:34,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-20 11:07:34,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:07:34,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:07:34,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 11:07:34,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:34,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:07:34,779 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-20 11:07:34,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-20 11:07:34,839 INFO L321 Elim1Store]: treesize reduction 52, result has 30.7 percent of original size [2022-11-20 11:07:34,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 38 [2022-11-20 11:07:34,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:07:34,992 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-20 11:07:34,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 38 [2022-11-20 11:07:35,038 INFO L321 Elim1Store]: treesize reduction 6, result has 80.6 percent of original size [2022-11-20 11:07:35,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 53 [2022-11-20 11:07:35,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:35,295 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:07:35,295 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:07:35,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1374735198] [2022-11-20 11:07:35,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1374735198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:07:35,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:07:35,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:07:35,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533889554] [2022-11-20 11:07:35,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:07:35,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:07:35,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:07:35,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:07:35,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:07:35,297 INFO L87 Difference]: Start difference. First operand 29 states and 46 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-11-20 11:07:35,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:35,326 INFO L93 Difference]: Finished difference Result 29 states and 45 transitions. [2022-11-20 11:07:35,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:07:35,327 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2022-11-20 11:07:35,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:35,328 INFO L225 Difference]: With dead ends: 29 [2022-11-20 11:07:35,328 INFO L226 Difference]: Without dead ends: 29 [2022-11-20 11:07:35,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:07:35,328 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:35,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 23 Unchecked, 0.0s Time] [2022-11-20 11:07:35,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-20 11:07:35,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 23. [2022-11-20 11:07:35,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 22 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) [2022-11-20 11:07:35,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 34 transitions. [2022-11-20 11:07:35,331 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 34 transitions. Word has length 10 [2022-11-20 11:07:35,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:35,331 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 34 transitions. [2022-11-20 11:07:35,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-11-20 11:07:35,332 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 34 transitions. [2022-11-20 11:07:35,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 11:07:35,332 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:35,332 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:35,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-20 11:07:35,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:35,533 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:07:35,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:35,533 INFO L85 PathProgramCache]: Analyzing trace with hash -664259184, now seen corresponding path program 1 times [2022-11-20 11:07:35,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:07:35,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [631908432] [2022-11-20 11:07:35,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:35,534 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:35,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:07:35,534 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:07:35,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-20 11:07:35,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:35,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:07:35,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:35,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:07:35,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:35,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:07:35,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:35,913 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:07:35,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [631908432] [2022-11-20 11:07:35,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [631908432] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:07:35,913 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:07:35,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-11-20 11:07:35,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039199556] [2022-11-20 11:07:35,914 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:07:35,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:07:35,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:07:35,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:07:35,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:07:35,915 INFO L87 Difference]: Start difference. First operand 23 states and 34 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 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) [2022-11-20 11:07:36,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:36,352 INFO L93 Difference]: Finished difference Result 55 states and 74 transitions. [2022-11-20 11:07:36,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:07:36,353 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 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 10 [2022-11-20 11:07:36,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:36,353 INFO L225 Difference]: With dead ends: 55 [2022-11-20 11:07:36,354 INFO L226 Difference]: Without dead ends: 55 [2022-11-20 11:07:36,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:07:36,355 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 81 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:36,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 0 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:07:36,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-20 11:07:36,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 29. [2022-11-20 11:07:36,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 25 states have (on average 2.2) internal successors, (55), 28 states have internal predecessors, (55), 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) [2022-11-20 11:07:36,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 55 transitions. [2022-11-20 11:07:36,359 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 55 transitions. Word has length 10 [2022-11-20 11:07:36,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:36,360 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 55 transitions. [2022-11-20 11:07:36,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 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) [2022-11-20 11:07:36,360 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 55 transitions. [2022-11-20 11:07:36,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 11:07:36,361 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:36,361 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:36,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-20 11:07:36,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:36,571 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:07:36,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:36,571 INFO L85 PathProgramCache]: Analyzing trace with hash -664259238, now seen corresponding path program 1 times [2022-11-20 11:07:36,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:07:36,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [763373954] [2022-11-20 11:07:36,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:36,572 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:36,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:07:36,573 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:07:36,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-20 11:07:36,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:36,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:07:36,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:36,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:07:36,756 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-20 11:07:36,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-20 11:07:36,809 INFO L321 Elim1Store]: treesize reduction 52, result has 30.7 percent of original size [2022-11-20 11:07:36,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 38 [2022-11-20 11:07:36,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:07:36,941 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-20 11:07:36,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 38 [2022-11-20 11:07:36,991 INFO L321 Elim1Store]: treesize reduction 6, result has 80.6 percent of original size [2022-11-20 11:07:36,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 53 [2022-11-20 11:07:37,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:37,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:07:37,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:37,513 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:07:37,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [763373954] [2022-11-20 11:07:37,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [763373954] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:07:37,513 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:07:37,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-20 11:07:37,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803454331] [2022-11-20 11:07:37,514 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:07:37,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:07:37,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:07:37,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:07:37,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:07:37,515 INFO L87 Difference]: Start difference. First operand 29 states and 55 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 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) [2022-11-20 11:07:37,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:37,583 INFO L93 Difference]: Finished difference Result 37 states and 69 transitions. [2022-11-20 11:07:37,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:07:37,584 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 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 10 [2022-11-20 11:07:37,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:37,585 INFO L225 Difference]: With dead ends: 37 [2022-11-20 11:07:37,585 INFO L226 Difference]: Without dead ends: 37 [2022-11-20 11:07:37,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:07:37,586 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:37,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 24 Unchecked, 0.1s Time] [2022-11-20 11:07:37,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-20 11:07:37,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2022-11-20 11:07:37,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 32 states have (on average 2.15625) internal successors, (69), 35 states have internal predecessors, (69), 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) [2022-11-20 11:07:37,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 69 transitions. [2022-11-20 11:07:37,589 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 69 transitions. Word has length 10 [2022-11-20 11:07:37,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:37,589 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 69 transitions. [2022-11-20 11:07:37,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 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) [2022-11-20 11:07:37,590 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 69 transitions. [2022-11-20 11:07:37,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 11:07:37,590 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:37,590 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:37,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-20 11:07:37,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:37,805 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:07:37,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:37,805 INFO L85 PathProgramCache]: Analyzing trace with hash 882254200, now seen corresponding path program 1 times [2022-11-20 11:07:37,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:07:37,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1884104503] [2022-11-20 11:07:37,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:37,806 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:37,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:07:37,807 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:07:37,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-20 11:07:37,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:37,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:07:37,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:37,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:07:38,001 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-20 11:07:38,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-20 11:07:38,054 INFO L321 Elim1Store]: treesize reduction 52, result has 30.7 percent of original size [2022-11-20 11:07:38,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 38 [2022-11-20 11:07:38,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:07:38,221 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-20 11:07:38,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 38 [2022-11-20 11:07:38,271 INFO L321 Elim1Store]: treesize reduction 6, result has 80.6 percent of original size [2022-11-20 11:07:38,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 53 [2022-11-20 11:07:38,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:38,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:07:38,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:38,869 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:07:38,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1884104503] [2022-11-20 11:07:38,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1884104503] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:07:38,869 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:07:38,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-20 11:07:38,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717448131] [2022-11-20 11:07:38,870 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:07:38,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:07:38,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:07:38,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:07:38,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:07:38,871 INFO L87 Difference]: Start difference. First operand 36 states and 69 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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) [2022-11-20 11:07:38,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:38,953 INFO L93 Difference]: Finished difference Result 46 states and 86 transitions. [2022-11-20 11:07:38,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:07:38,954 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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 11 [2022-11-20 11:07:38,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:38,955 INFO L225 Difference]: With dead ends: 46 [2022-11-20 11:07:38,955 INFO L226 Difference]: Without dead ends: 46 [2022-11-20 11:07:38,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:07:38,955 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:38,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 32 Unchecked, 0.1s Time] [2022-11-20 11:07:38,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-20 11:07:38,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2022-11-20 11:07:38,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 41 states have internal predecessors, (81), 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) [2022-11-20 11:07:38,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 81 transitions. [2022-11-20 11:07:38,960 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 81 transitions. Word has length 11 [2022-11-20 11:07:38,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:38,960 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 81 transitions. [2022-11-20 11:07:38,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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) [2022-11-20 11:07:38,960 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 81 transitions. [2022-11-20 11:07:38,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 11:07:38,961 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:38,961 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:38,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-20 11:07:39,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:39,171 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:07:39,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:39,171 INFO L85 PathProgramCache]: Analyzing trace with hash 882238333, now seen corresponding path program 1 times [2022-11-20 11:07:39,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:07:39,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2744120] [2022-11-20 11:07:39,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:39,172 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:39,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:07:39,173 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:07:39,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-20 11:07:39,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:39,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:07:39,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:39,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:39,300 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:07:39,300 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:07:39,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2744120] [2022-11-20 11:07:39,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2744120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:07:39,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:07:39,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:07:39,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418359132] [2022-11-20 11:07:39,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:07:39,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:07:39,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:07:39,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:07:39,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:07:39,302 INFO L87 Difference]: Start difference. First operand 42 states and 81 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-11-20 11:07:39,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:39,370 INFO L93 Difference]: Finished difference Result 42 states and 77 transitions. [2022-11-20 11:07:39,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:07:39,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2022-11-20 11:07:39,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:39,371 INFO L225 Difference]: With dead ends: 42 [2022-11-20 11:07:39,371 INFO L226 Difference]: Without dead ends: 42 [2022-11-20 11:07:39,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:07:39,372 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:39,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 0 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:07:39,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-20 11:07:39,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-11-20 11:07:39,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 38 states have (on average 2.026315789473684) internal successors, (77), 41 states have internal predecessors, (77), 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) [2022-11-20 11:07:39,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 77 transitions. [2022-11-20 11:07:39,376 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 77 transitions. Word has length 11 [2022-11-20 11:07:39,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:39,376 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 77 transitions. [2022-11-20 11:07:39,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-11-20 11:07:39,376 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 77 transitions. [2022-11-20 11:07:39,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 11:07:39,377 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:39,377 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:39,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-20 11:07:39,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:39,589 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:07:39,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:39,590 INFO L85 PathProgramCache]: Analyzing trace with hash 882773140, now seen corresponding path program 2 times [2022-11-20 11:07:39,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:07:39,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1517932254] [2022-11-20 11:07:39,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:07:39,590 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:39,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:07:39,591 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:07:39,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-20 11:07:39,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:07:39,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:07:39,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 11:07:39,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:39,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:07:39,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:07:39,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:07:39,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-20 11:07:39,811 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-20 11:07:39,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 45 [2022-11-20 11:07:39,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:07:39,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 11:07:39,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:39,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:07:40,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:40,104 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:07:40,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1517932254] [2022-11-20 11:07:40,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1517932254] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:07:40,105 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:07:40,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-20 11:07:40,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704019642] [2022-11-20 11:07:40,105 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:07:40,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:07:40,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:07:40,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:07:40,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:07:40,106 INFO L87 Difference]: Start difference. First operand 42 states and 77 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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) [2022-11-20 11:07:40,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:40,540 INFO L93 Difference]: Finished difference Result 73 states and 115 transitions. [2022-11-20 11:07:40,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:07:40,541 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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 11 [2022-11-20 11:07:40,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:40,542 INFO L225 Difference]: With dead ends: 73 [2022-11-20 11:07:40,542 INFO L226 Difference]: Without dead ends: 73 [2022-11-20 11:07:40,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:07:40,543 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 48 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:40,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 0 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 99 Invalid, 0 Unknown, 63 Unchecked, 0.3s Time] [2022-11-20 11:07:40,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-11-20 11:07:40,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 44. [2022-11-20 11:07:40,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 40 states have (on average 2.05) internal successors, (82), 43 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) [2022-11-20 11:07:40,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 82 transitions. [2022-11-20 11:07:40,547 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 82 transitions. Word has length 11 [2022-11-20 11:07:40,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:40,547 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 82 transitions. [2022-11-20 11:07:40,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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) [2022-11-20 11:07:40,547 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 82 transitions. [2022-11-20 11:07:40,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 11:07:40,548 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:40,548 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:40,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-20 11:07:40,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:40,749 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:07:40,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:40,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1159444292, now seen corresponding path program 3 times [2022-11-20 11:07:40,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:07:40,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2018936592] [2022-11-20 11:07:40,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:07:40,750 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:40,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:07:40,751 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:07:40,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-20 11:07:40,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 11:07:40,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:07:40,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 11:07:40,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:40,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:07:40,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:07:40,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:07:40,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-20 11:07:40,941 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-20 11:07:40,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 45 [2022-11-20 11:07:41,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:07:41,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 11:07:41,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:41,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:07:41,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:41,251 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:07:41,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2018936592] [2022-11-20 11:07:41,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2018936592] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:07:41,252 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:07:41,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-20 11:07:41,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189767303] [2022-11-20 11:07:41,252 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:07:41,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:07:41,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:07:41,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:07:41,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:07:41,253 INFO L87 Difference]: Start difference. First operand 44 states and 82 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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) [2022-11-20 11:07:41,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:41,700 INFO L93 Difference]: Finished difference Result 70 states and 104 transitions. [2022-11-20 11:07:41,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:07:41,701 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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 11 [2022-11-20 11:07:41,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:41,702 INFO L225 Difference]: With dead ends: 70 [2022-11-20 11:07:41,702 INFO L226 Difference]: Without dead ends: 70 [2022-11-20 11:07:41,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:07:41,703 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 44 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:41,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 0 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 118 Invalid, 0 Unknown, 70 Unchecked, 0.4s Time] [2022-11-20 11:07:41,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-20 11:07:41,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 29. [2022-11-20 11:07:41,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 25 states have (on average 1.88) internal successors, (47), 28 states have internal predecessors, (47), 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) [2022-11-20 11:07:41,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 47 transitions. [2022-11-20 11:07:41,706 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 47 transitions. Word has length 11 [2022-11-20 11:07:41,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:41,706 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 47 transitions. [2022-11-20 11:07:41,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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) [2022-11-20 11:07:41,707 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 47 transitions. [2022-11-20 11:07:41,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 11:07:41,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:41,707 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:41,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-20 11:07:41,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:41,915 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:07:41,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:41,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1580086450, now seen corresponding path program 1 times [2022-11-20 11:07:41,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:07:41,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783529633] [2022-11-20 11:07:41,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:41,916 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:41,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:07:41,917 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:07:41,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-20 11:07:42,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:42,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 11:07:42,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:42,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2022-11-20 11:07:42,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:42,081 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:07:42,081 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:07:42,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783529633] [2022-11-20 11:07:42,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783529633] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:07:42,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:07:42,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:07:42,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976123594] [2022-11-20 11:07:42,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:07:42,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:07:42,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:07:42,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:07:42,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:07:42,083 INFO L87 Difference]: Start difference. First operand 29 states and 47 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2022-11-20 11:07:42,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:42,201 INFO L93 Difference]: Finished difference Result 33 states and 50 transitions. [2022-11-20 11:07:42,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:07:42,202 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2022-11-20 11:07:42,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:42,203 INFO L225 Difference]: With dead ends: 33 [2022-11-20 11:07:42,203 INFO L226 Difference]: Without dead ends: 33 [2022-11-20 11:07:42,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:07:42,203 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:42,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:07:42,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-20 11:07:42,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2022-11-20 11:07:42,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 31 states have internal predecessors, (50), 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) [2022-11-20 11:07:42,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 50 transitions. [2022-11-20 11:07:42,207 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 50 transitions. Word has length 12 [2022-11-20 11:07:42,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:42,207 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 50 transitions. [2022-11-20 11:07:42,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2022-11-20 11:07:42,208 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 50 transitions. [2022-11-20 11:07:42,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 11:07:42,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:42,208 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:42,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-11-20 11:07:42,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:42,420 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:07:42,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:42,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1580086437, now seen corresponding path program 1 times [2022-11-20 11:07:42,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:07:42,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [580113008] [2022-11-20 11:07:42,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:42,421 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:42,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:07:42,422 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:07:42,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-20 11:07:42,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:42,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 11:07:42,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:42,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:07:42,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:07:42,601 INFO L321 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2022-11-20 11:07:42,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 24 [2022-11-20 11:07:42,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:07:42,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:42,677 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:07:42,677 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:07:42,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [580113008] [2022-11-20 11:07:42,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [580113008] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:07:42,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:07:42,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:07:42,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098169019] [2022-11-20 11:07:42,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:07:42,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:07:42,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:07:42,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:07:42,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:07:42,679 INFO L87 Difference]: Start difference. First operand 32 states and 50 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-11-20 11:07:42,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:42,815 INFO L93 Difference]: Finished difference Result 29 states and 45 transitions. [2022-11-20 11:07:42,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:07:42,816 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2022-11-20 11:07:42,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:42,816 INFO L225 Difference]: With dead ends: 29 [2022-11-20 11:07:42,816 INFO L226 Difference]: Without dead ends: 29 [2022-11-20 11:07:42,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:07:42,817 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:42,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 0 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:07:42,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-20 11:07:42,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-20 11:07:42,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 25 states have (on average 1.8) internal successors, (45), 28 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) [2022-11-20 11:07:42,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 45 transitions. [2022-11-20 11:07:42,819 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 45 transitions. Word has length 12 [2022-11-20 11:07:42,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:42,820 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 45 transitions. [2022-11-20 11:07:42,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-11-20 11:07:42,820 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 45 transitions. [2022-11-20 11:07:42,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 11:07:42,820 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:42,821 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:42,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-20 11:07:43,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:43,031 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:07:43,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:43,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1737826613, now seen corresponding path program 1 times [2022-11-20 11:07:43,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:07:43,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1157672912] [2022-11-20 11:07:43,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:43,031 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:43,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:07:43,033 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:07:43,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-20 11:07:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:43,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 11:07:43,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:43,211 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-20 11:07:43,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 45 [2022-11-20 11:07:43,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:07:43,291 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-20 11:07:43,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-20 11:07:43,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:07:43,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:07:43,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:43,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:07:43,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:43,707 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:07:43,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1157672912] [2022-11-20 11:07:43,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1157672912] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:07:43,707 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:07:43,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-11-20 11:07:43,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322789122] [2022-11-20 11:07:43,707 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:07:43,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:07:43,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:07:43,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:07:43,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=96, Unknown=8, NotChecked=0, Total=132 [2022-11-20 11:07:43,709 INFO L87 Difference]: Start difference. First operand 29 states and 45 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 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) [2022-11-20 11:07:43,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:43,881 INFO L93 Difference]: Finished difference Result 38 states and 57 transitions. [2022-11-20 11:07:43,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:07:43,882 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 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 [2022-11-20 11:07:43,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:43,883 INFO L225 Difference]: With dead ends: 38 [2022-11-20 11:07:43,883 INFO L226 Difference]: Without dead ends: 38 [2022-11-20 11:07:43,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=114, Unknown=8, NotChecked=0, Total=156 [2022-11-20 11:07:43,884 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 100 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:43,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 100 Unchecked, 0.1s Time] [2022-11-20 11:07:43,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-20 11:07:43,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-11-20 11:07:43,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 37 states have internal predecessors, (57), 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) [2022-11-20 11:07:43,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 57 transitions. [2022-11-20 11:07:43,886 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 57 transitions. Word has length 13 [2022-11-20 11:07:43,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:43,886 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 57 transitions. [2022-11-20 11:07:43,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 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) [2022-11-20 11:07:43,887 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 57 transitions. [2022-11-20 11:07:43,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 11:07:43,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:43,887 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:43,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-20 11:07:44,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:44,099 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:07:44,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:44,100 INFO L85 PathProgramCache]: Analyzing trace with hash -2029817335, now seen corresponding path program 2 times [2022-11-20 11:07:44,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:07:44,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1425546189] [2022-11-20 11:07:44,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:07:44,100 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:44,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:07:44,101 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:07:44,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-20 11:07:44,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:07:44,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:07:44,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 11:07:44,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:44,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:07:44,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:07:44,260 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 11:07:44,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 23 [2022-11-20 11:07:44,293 INFO L321 Elim1Store]: treesize reduction 17, result has 45.2 percent of original size [2022-11-20 11:07:44,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 38 [2022-11-20 11:07:44,322 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 11:07:44,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 11:07:44,446 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 11:07:44,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:07:44,446 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:07:44,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1425546189] [2022-11-20 11:07:44,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1425546189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:07:44,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:07:44,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:07:44,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392638672] [2022-11-20 11:07:44,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:07:44,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:07:44,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:07:44,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:07:44,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:07:44,448 INFO L87 Difference]: Start difference. First operand 38 states and 57 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-11-20 11:07:44,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:44,546 INFO L93 Difference]: Finished difference Result 36 states and 54 transitions. [2022-11-20 11:07:44,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:07:44,547 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 [2022-11-20 11:07:44,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:44,547 INFO L225 Difference]: With dead ends: 36 [2022-11-20 11:07:44,548 INFO L226 Difference]: Without dead ends: 36 [2022-11-20 11:07:44,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:07:44,548 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:44,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:07:44,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-20 11:07:44,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-20 11:07:44,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 35 states have internal predecessors, (54), 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) [2022-11-20 11:07:44,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 54 transitions. [2022-11-20 11:07:44,551 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 54 transitions. Word has length 13 [2022-11-20 11:07:44,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:44,551 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 54 transitions. [2022-11-20 11:07:44,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-11-20 11:07:44,551 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 54 transitions. [2022-11-20 11:07:44,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 11:07:44,552 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:44,552 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:44,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-20 11:07:44,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:44,759 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:07:44,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:44,759 INFO L85 PathProgramCache]: Analyzing trace with hash -2029817389, now seen corresponding path program 2 times [2022-11-20 11:07:44,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:07:44,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1481625997] [2022-11-20 11:07:44,760 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:07:44,760 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:44,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:07:44,761 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:07:44,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-20 11:07:44,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:07:44,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:07:44,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 11:07:44,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:44,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:07:44,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:07:44,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:07:44,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-20 11:07:44,985 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-20 11:07:44,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 45 [2022-11-20 11:07:45,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:07:45,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 11:07:45,193 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:45,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:07:45,510 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:45,510 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:07:45,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1481625997] [2022-11-20 11:07:45,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1481625997] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:07:45,511 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:07:45,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2022-11-20 11:07:45,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479707400] [2022-11-20 11:07:45,511 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:07:45,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:07:45,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:07:45,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:07:45,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:07:45,512 INFO L87 Difference]: Start difference. First operand 36 states and 54 transitions. Second operand has 16 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 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) [2022-11-20 11:07:46,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:46,338 INFO L93 Difference]: Finished difference Result 82 states and 116 transitions. [2022-11-20 11:07:46,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:07:46,339 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 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 [2022-11-20 11:07:46,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:46,341 INFO L225 Difference]: With dead ends: 82 [2022-11-20 11:07:46,341 INFO L226 Difference]: Without dead ends: 82 [2022-11-20 11:07:46,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:07:46,342 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 120 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:46,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 0 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 221 Invalid, 0 Unknown, 33 Unchecked, 0.6s Time] [2022-11-20 11:07:46,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-11-20 11:07:46,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 42. [2022-11-20 11:07:46,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 39 states have (on average 1.7692307692307692) internal successors, (69), 41 states have internal predecessors, (69), 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) [2022-11-20 11:07:46,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 69 transitions. [2022-11-20 11:07:46,345 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 69 transitions. Word has length 13 [2022-11-20 11:07:46,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:46,346 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 69 transitions. [2022-11-20 11:07:46,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 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) [2022-11-20 11:07:46,346 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 69 transitions. [2022-11-20 11:07:46,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 11:07:46,347 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:46,347 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:46,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-20 11:07:46,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:46,559 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:07:46,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:46,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1330831333, now seen corresponding path program 2 times [2022-11-20 11:07:46,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:07:46,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1957853877] [2022-11-20 11:07:46,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:07:46,560 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:46,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:07:46,561 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:07:46,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-20 11:07:46,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:07:46,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:07:46,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 11:07:46,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:46,792 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-20 11:07:46,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 45 [2022-11-20 11:07:46,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:07:46,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:07:46,910 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-20 11:07:46,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-20 11:07:46,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:07:47,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:07:47,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:47,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:07:48,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:48,190 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:07:48,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1957853877] [2022-11-20 11:07:48,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1957853877] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:07:48,190 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:07:48,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-11-20 11:07:48,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926936581] [2022-11-20 11:07:48,191 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:07:48,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:07:48,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:07:48,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:07:48,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=103, Unknown=1, NotChecked=0, Total=132 [2022-11-20 11:07:48,192 INFO L87 Difference]: Start difference. First operand 42 states and 69 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 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) [2022-11-20 11:07:48,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:48,406 INFO L93 Difference]: Finished difference Result 50 states and 82 transitions. [2022-11-20 11:07:48,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:07:48,407 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 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 [2022-11-20 11:07:48,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:48,408 INFO L225 Difference]: With dead ends: 50 [2022-11-20 11:07:48,408 INFO L226 Difference]: Without dead ends: 50 [2022-11-20 11:07:48,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=141, Unknown=1, NotChecked=0, Total=182 [2022-11-20 11:07:48,409 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:48,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 0 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 61 Unchecked, 0.1s Time] [2022-11-20 11:07:48,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-20 11:07:48,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2022-11-20 11:07:48,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 42 states have (on average 1.7380952380952381) internal successors, (73), 44 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) [2022-11-20 11:07:48,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 73 transitions. [2022-11-20 11:07:48,412 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 73 transitions. Word has length 13 [2022-11-20 11:07:48,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:48,412 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 73 transitions. [2022-11-20 11:07:48,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 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) [2022-11-20 11:07:48,412 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 73 transitions. [2022-11-20 11:07:48,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 11:07:48,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:48,413 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:48,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-20 11:07:48,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:48,623 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:07:48,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:48,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1829532673, now seen corresponding path program 3 times [2022-11-20 11:07:48,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:07:48,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [390465285] [2022-11-20 11:07:48,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:07:48,624 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:48,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:07:48,625 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:07:48,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-20 11:07:48,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 11:07:48,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:07:48,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-20 11:07:48,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:48,902 INFO L321 Elim1Store]: treesize reduction 118, result has 24.4 percent of original size [2022-11-20 11:07:48,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 38 treesize of output 65 [2022-11-20 11:07:48,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:07:49,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:07:49,122 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-20 11:07:49,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 27 [2022-11-20 11:07:49,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:07:49,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:07:49,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:07:50,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:50,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:07:50,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:50,704 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:07:50,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [390465285] [2022-11-20 11:07:50,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [390465285] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:07:50,704 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:07:50,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-11-20 11:07:50,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105303250] [2022-11-20 11:07:50,704 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:07:50,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:07:50,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:07:50,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:07:50,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=102, Unknown=2, NotChecked=0, Total=132 [2022-11-20 11:07:50,705 INFO L87 Difference]: Start difference. First operand 45 states and 73 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 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) [2022-11-20 11:07:50,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:50,796 INFO L93 Difference]: Finished difference Result 47 states and 75 transitions. [2022-11-20 11:07:50,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:07:50,797 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 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 [2022-11-20 11:07:50,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:50,798 INFO L225 Difference]: With dead ends: 47 [2022-11-20 11:07:50,798 INFO L226 Difference]: Without dead ends: 47 [2022-11-20 11:07:50,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=28, Invalid=102, Unknown=2, NotChecked=0, Total=132 [2022-11-20 11:07:50,799 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 130 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:50,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 130 Unchecked, 0.1s Time] [2022-11-20 11:07:50,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-20 11:07:50,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2022-11-20 11:07:50,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 43 states have internal predecessors, (72), 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) [2022-11-20 11:07:50,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 72 transitions. [2022-11-20 11:07:50,801 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 72 transitions. Word has length 13 [2022-11-20 11:07:50,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:50,802 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 72 transitions. [2022-11-20 11:07:50,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 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) [2022-11-20 11:07:50,802 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 72 transitions. [2022-11-20 11:07:50,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 11:07:50,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:50,802 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:50,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-20 11:07:51,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:51,003 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:07:51,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:51,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1858154627, now seen corresponding path program 3 times [2022-11-20 11:07:51,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:07:51,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [784796483] [2022-11-20 11:07:51,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:07:51,004 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:51,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:07:51,005 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:07:51,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-20 11:07:51,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 11:07:51,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:07:51,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 11:07:51,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:51,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:07:51,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:07:51,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:07:51,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-20 11:07:51,225 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-20 11:07:51,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 45 [2022-11-20 11:07:51,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:07:51,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 11:07:51,473 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:51,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:07:51,960 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:51,960 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:07:51,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [784796483] [2022-11-20 11:07:51,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [784796483] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:07:51,960 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:07:51,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2022-11-20 11:07:51,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676602812] [2022-11-20 11:07:51,961 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:07:51,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:07:51,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:07:51,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:07:51,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:07:51,962 INFO L87 Difference]: Start difference. First operand 44 states and 72 transitions. Second operand has 16 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 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) [2022-11-20 11:07:53,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:53,608 INFO L93 Difference]: Finished difference Result 104 states and 154 transitions. [2022-11-20 11:07:53,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 11:07:53,609 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 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 [2022-11-20 11:07:53,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:53,610 INFO L225 Difference]: With dead ends: 104 [2022-11-20 11:07:53,610 INFO L226 Difference]: Without dead ends: 104 [2022-11-20 11:07:53,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:07:53,611 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 154 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:53,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 0 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 257 Invalid, 0 Unknown, 77 Unchecked, 0.9s Time] [2022-11-20 11:07:53,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-11-20 11:07:53,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 58. [2022-11-20 11:07:53,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 55 states have (on average 1.981818181818182) internal successors, (109), 57 states have internal predecessors, (109), 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) [2022-11-20 11:07:53,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 109 transitions. [2022-11-20 11:07:53,614 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 109 transitions. Word has length 13 [2022-11-20 11:07:53,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:53,615 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 109 transitions. [2022-11-20 11:07:53,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 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) [2022-11-20 11:07:53,615 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 109 transitions. [2022-11-20 11:07:53,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 11:07:53,616 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:53,616 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:53,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-20 11:07:53,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:53,828 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:07:53,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:53,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1962162926, now seen corresponding path program 4 times [2022-11-20 11:07:53,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:07:53,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [602826108] [2022-11-20 11:07:53,828 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:07:53,829 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:53,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:07:53,830 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:07:53,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-20 11:07:53,972 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 11:07:53,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:07:53,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 11:07:53,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:54,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:07:54,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:07:54,052 INFO L321 Elim1Store]: treesize reduction 52, result has 30.7 percent of original size [2022-11-20 11:07:54,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 50 [2022-11-20 11:07:54,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:07:54,203 INFO L321 Elim1Store]: treesize reduction 38, result has 25.5 percent of original size [2022-11-20 11:07:54,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 27 treesize of output 31 [2022-11-20 11:07:54,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:07:54,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:07:54,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:07:54,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:07:54,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:54,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:07:54,768 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_451 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_451) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv2 32)))) (_ bv0 8)))) is different from false [2022-11-20 11:07:55,059 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-20 11:07:55,060 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:07:55,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [602826108] [2022-11-20 11:07:55,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [602826108] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:07:55,060 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:07:55,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-20 11:07:55,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128779604] [2022-11-20 11:07:55,060 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:07:55,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 11:07:55,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:07:55,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 11:07:55,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=120, Unknown=8, NotChecked=22, Total=182 [2022-11-20 11:07:55,061 INFO L87 Difference]: Start difference. First operand 58 states and 109 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 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) [2022-11-20 11:07:55,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:55,236 INFO L93 Difference]: Finished difference Result 64 states and 113 transitions. [2022-11-20 11:07:55,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:07:55,237 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 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 [2022-11-20 11:07:55,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:55,238 INFO L225 Difference]: With dead ends: 64 [2022-11-20 11:07:55,238 INFO L226 Difference]: Without dead ends: 64 [2022-11-20 11:07:55,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=138, Unknown=8, NotChecked=24, Total=210 [2022-11-20 11:07:55,238 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:55,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 0 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 66 Unchecked, 0.1s Time] [2022-11-20 11:07:55,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-20 11:07:55,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-11-20 11:07:55,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 61 states have (on average 1.8524590163934427) internal successors, (113), 63 states have internal predecessors, (113), 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) [2022-11-20 11:07:55,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 113 transitions. [2022-11-20 11:07:55,241 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 113 transitions. Word has length 14 [2022-11-20 11:07:55,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:55,241 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 113 transitions. [2022-11-20 11:07:55,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 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) [2022-11-20 11:07:55,241 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 113 transitions. [2022-11-20 11:07:55,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 11:07:55,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:55,242 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:55,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-20 11:07:55,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:55,454 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:07:55,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:55,455 INFO L85 PathProgramCache]: Analyzing trace with hash 612676726, now seen corresponding path program 5 times [2022-11-20 11:07:55,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:07:55,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [428624708] [2022-11-20 11:07:55,455 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 11:07:55,455 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:55,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:07:55,456 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:07:55,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-20 11:07:55,617 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:07:55,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:07:55,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 11:07:55,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:55,685 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-20 11:07:55,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 45 [2022-11-20 11:07:55,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:07:55,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:07:55,794 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-20 11:07:55,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-20 11:07:55,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:07:55,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:07:56,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:07:56,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 11:07:56,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:56,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:07:58,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:58,617 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:07:58,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [428624708] [2022-11-20 11:07:58,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [428624708] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:07:58,618 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:07:58,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-20 11:07:58,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390966879] [2022-11-20 11:07:58,618 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:07:58,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 11:07:58,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:07:58,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 11:07:58,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=147, Unknown=2, NotChecked=0, Total=182 [2022-11-20 11:07:58,619 INFO L87 Difference]: Start difference. First operand 64 states and 113 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 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) [2022-11-20 11:07:58,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:58,928 INFO L93 Difference]: Finished difference Result 67 states and 117 transitions. [2022-11-20 11:07:58,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:07:58,929 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 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 [2022-11-20 11:07:58,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:58,929 INFO L225 Difference]: With dead ends: 67 [2022-11-20 11:07:58,929 INFO L226 Difference]: Without dead ends: 67 [2022-11-20 11:07:58,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=51, Invalid=219, Unknown=2, NotChecked=0, Total=272 [2022-11-20 11:07:58,930 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 99 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:58,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 0 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 99 Unchecked, 0.2s Time] [2022-11-20 11:07:58,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-20 11:07:58,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2022-11-20 11:07:58,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 60 states have (on average 1.8666666666666667) internal successors, (112), 62 states have internal predecessors, (112), 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) [2022-11-20 11:07:58,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 112 transitions. [2022-11-20 11:07:58,933 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 112 transitions. Word has length 14 [2022-11-20 11:07:58,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:58,933 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 112 transitions. [2022-11-20 11:07:58,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 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) [2022-11-20 11:07:58,934 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 112 transitions. [2022-11-20 11:07:58,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 11:07:58,934 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:58,934 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:58,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-20 11:07:59,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:59,143 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:07:59,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:59,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1471551256, now seen corresponding path program 6 times [2022-11-20 11:07:59,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:07:59,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1635507347] [2022-11-20 11:07:59,144 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 11:07:59,144 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:59,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:07:59,146 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:07:59,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-20 11:07:59,329 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-20 11:07:59,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:07:59,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-20 11:07:59,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:59,426 INFO L321 Elim1Store]: treesize reduction 118, result has 24.4 percent of original size [2022-11-20 11:07:59,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 38 treesize of output 65 [2022-11-20 11:07:59,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:07:59,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:07:59,596 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-20 11:07:59,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 27 [2022-11-20 11:07:59,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:07:59,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:00,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:00,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:01,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:08:01,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:08:01,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:08:01,701 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:08:01,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1635507347] [2022-11-20 11:08:01,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1635507347] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:08:01,701 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:08:01,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-20 11:08:01,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468901619] [2022-11-20 11:08:01,702 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:08:01,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 11:08:01,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:08:01,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 11:08:01,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=146, Unknown=3, NotChecked=0, Total=182 [2022-11-20 11:08:01,702 INFO L87 Difference]: Start difference. First operand 63 states and 112 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 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) [2022-11-20 11:08:01,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:08:01,757 INFO L93 Difference]: Finished difference Result 63 states and 111 transitions. [2022-11-20 11:08:01,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:08:01,758 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 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 [2022-11-20 11:08:01,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:08:01,758 INFO L225 Difference]: With dead ends: 63 [2022-11-20 11:08:01,758 INFO L226 Difference]: Without dead ends: 63 [2022-11-20 11:08:01,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=33, Invalid=146, Unknown=3, NotChecked=0, Total=182 [2022-11-20 11:08:01,759 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:08:01,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 45 Unchecked, 0.1s Time] [2022-11-20 11:08:01,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-20 11:08:01,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2022-11-20 11:08:01,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 58 states have (on average 1.8793103448275863) internal successors, (109), 60 states have internal predecessors, (109), 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) [2022-11-20 11:08:01,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 109 transitions. [2022-11-20 11:08:01,762 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 109 transitions. Word has length 14 [2022-11-20 11:08:01,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:08:01,762 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 109 transitions. [2022-11-20 11:08:01,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 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) [2022-11-20 11:08:01,762 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 109 transitions. [2022-11-20 11:08:01,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 11:08:01,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:08:01,762 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:08:01,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-20 11:08:01,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:08:01,979 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:08:01,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:08:01,979 INFO L85 PathProgramCache]: Analyzing trace with hash 880724934, now seen corresponding path program 7 times [2022-11-20 11:08:01,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:08:01,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2020079701] [2022-11-20 11:08:01,979 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 11:08:01,979 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:08:01,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:08:01,980 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:08:01,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-20 11:08:02,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:02,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 11:08:02,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:08:02,171 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-20 11:08:02,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 45 [2022-11-20 11:08:02,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:02,266 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-20 11:08:02,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-20 11:08:02,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:02,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:02,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:02,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:08:02,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:08:02,503 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_531 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (_ bv0 8) ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_531) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv1 32))))))) is different from false [2022-11-20 11:08:02,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-20 11:08:02,783 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:08:02,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2020079701] [2022-11-20 11:08:02,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2020079701] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:08:02,783 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:08:02,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-20 11:08:02,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727890907] [2022-11-20 11:08:02,784 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:08:02,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 11:08:02,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:08:02,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 11:08:02,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=121, Unknown=7, NotChecked=22, Total=182 [2022-11-20 11:08:02,785 INFO L87 Difference]: Start difference. First operand 61 states and 109 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 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) [2022-11-20 11:08:02,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:08:02,971 INFO L93 Difference]: Finished difference Result 61 states and 108 transitions. [2022-11-20 11:08:02,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:08:02,972 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 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 [2022-11-20 11:08:02,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:08:02,973 INFO L225 Difference]: With dead ends: 61 [2022-11-20 11:08:02,973 INFO L226 Difference]: Without dead ends: 61 [2022-11-20 11:08:02,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=139, Unknown=7, NotChecked=24, Total=210 [2022-11-20 11:08:02,974 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 96 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:08:02,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 96 Unchecked, 0.1s Time] [2022-11-20 11:08:02,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-20 11:08:02,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2022-11-20 11:08:02,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 55 states have (on average 1.9090909090909092) internal successors, (105), 57 states have internal predecessors, (105), 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) [2022-11-20 11:08:02,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 105 transitions. [2022-11-20 11:08:02,977 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 105 transitions. Word has length 14 [2022-11-20 11:08:02,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:08:02,978 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 105 transitions. [2022-11-20 11:08:02,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 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) [2022-11-20 11:08:02,978 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 105 transitions. [2022-11-20 11:08:02,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 11:08:02,979 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:08:02,979 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:08:02,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-20 11:08:03,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:08:03,187 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:08:03,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:08:03,187 INFO L85 PathProgramCache]: Analyzing trace with hash -697721643, now seen corresponding path program 8 times [2022-11-20 11:08:03,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:08:03,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1610384524] [2022-11-20 11:08:03,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:08:03,188 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:08:03,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:08:03,189 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:08:03,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-20 11:08:03,374 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:08:03,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:08:03,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-20 11:08:03,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:08:03,486 INFO L321 Elim1Store]: treesize reduction 118, result has 24.4 percent of original size [2022-11-20 11:08:03,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 38 treesize of output 65 [2022-11-20 11:08:03,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:03,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:08:03,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:08:03,677 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-20 11:08:03,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 27 [2022-11-20 11:08:03,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:04,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:04,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:05,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:05,226 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:08:05,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:08:06,056 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:08:06,056 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:08:06,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1610384524] [2022-11-20 11:08:06,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1610384524] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:08:06,057 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:08:06,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-11-20 11:08:06,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879137491] [2022-11-20 11:08:06,057 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:08:06,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:08:06,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:08:06,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:08:06,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:08:06,058 INFO L87 Difference]: Start difference. First operand 58 states and 105 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 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) [2022-11-20 11:08:06,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:08:06,101 INFO L93 Difference]: Finished difference Result 62 states and 108 transitions. [2022-11-20 11:08:06,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:08:06,102 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 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 15 [2022-11-20 11:08:06,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:08:06,102 INFO L225 Difference]: With dead ends: 62 [2022-11-20 11:08:06,103 INFO L226 Difference]: Without dead ends: 62 [2022-11-20 11:08:06,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:08:06,103 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:08:06,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 68 Unchecked, 0.0s Time] [2022-11-20 11:08:06,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-20 11:08:06,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-11-20 11:08:06,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 59 states have (on average 1.8305084745762712) internal successors, (108), 61 states have internal predecessors, (108), 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) [2022-11-20 11:08:06,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 108 transitions. [2022-11-20 11:08:06,106 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 108 transitions. Word has length 15 [2022-11-20 11:08:06,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:08:06,106 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 108 transitions. [2022-11-20 11:08:06,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 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) [2022-11-20 11:08:06,107 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 108 transitions. [2022-11-20 11:08:06,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 11:08:06,107 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:08:06,107 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:08:06,120 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Ended with exit code 0 [2022-11-20 11:08:06,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:08:06,319 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:08:06,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:08:06,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1812896241, now seen corresponding path program 9 times [2022-11-20 11:08:06,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:08:06,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1200451555] [2022-11-20 11:08:06,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:08:06,319 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:08:06,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:08:06,320 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:08:06,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-20 11:08:06,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 11:08:06,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:08:06,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-20 11:08:06,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:08:06,629 INFO L321 Elim1Store]: treesize reduction 118, result has 24.4 percent of original size [2022-11-20 11:08:06,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 38 treesize of output 65 [2022-11-20 11:08:06,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:06,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:08:06,805 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-20 11:08:06,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 27 [2022-11-20 11:08:06,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:08:07,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:08,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:08,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:08,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:08,766 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:08:08,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:08:11,568 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:08:11,568 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:08:11,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1200451555] [2022-11-20 11:08:11,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1200451555] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:08:11,568 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:08:11,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-11-20 11:08:11,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771103421] [2022-11-20 11:08:11,569 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:08:11,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:08:11,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:08:11,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:08:11,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=199, Unknown=2, NotChecked=0, Total=240 [2022-11-20 11:08:11,570 INFO L87 Difference]: Start difference. First operand 62 states and 108 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 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) [2022-11-20 11:08:11,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:08:11,621 INFO L93 Difference]: Finished difference Result 65 states and 111 transitions. [2022-11-20 11:08:11,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:08:11,622 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 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 15 [2022-11-20 11:08:11,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:08:11,623 INFO L225 Difference]: With dead ends: 65 [2022-11-20 11:08:11,623 INFO L226 Difference]: Without dead ends: 65 [2022-11-20 11:08:11,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=39, Invalid=199, Unknown=2, NotChecked=0, Total=240 [2022-11-20 11:08:11,624 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:08:11,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 45 Unchecked, 0.0s Time] [2022-11-20 11:08:11,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-20 11:08:11,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 61. [2022-11-20 11:08:11,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 58 states have (on average 1.8448275862068966) internal successors, (107), 60 states have internal predecessors, (107), 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) [2022-11-20 11:08:11,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 107 transitions. [2022-11-20 11:08:11,626 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 107 transitions. Word has length 15 [2022-11-20 11:08:11,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:08:11,627 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 107 transitions. [2022-11-20 11:08:11,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 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) [2022-11-20 11:08:11,627 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 107 transitions. [2022-11-20 11:08:11,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 11:08:11,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:08:11,627 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:08:11,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-20 11:08:11,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:08:11,840 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:08:11,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:08:11,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1626764401, now seen corresponding path program 10 times [2022-11-20 11:08:11,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:08:11,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1083011066] [2022-11-20 11:08:11,841 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:08:11,841 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:08:11,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:08:11,842 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:08:11,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-20 11:08:12,007 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 11:08:12,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:08:12,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 11:08:12,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:08:12,061 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-20 11:08:12,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 45 [2022-11-20 11:08:12,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:12,141 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-20 11:08:12,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-20 11:08:12,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:12,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:12,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:12,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:12,381 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:08:12,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:08:16,332 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:08:16,332 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:08:16,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1083011066] [2022-11-20 11:08:16,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1083011066] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:08:16,332 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:08:16,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-11-20 11:08:16,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612831594] [2022-11-20 11:08:16,333 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:08:16,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:08:16,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:08:16,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:08:16,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=181, Unknown=21, NotChecked=0, Total=240 [2022-11-20 11:08:16,334 INFO L87 Difference]: Start difference. First operand 61 states and 107 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 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) [2022-11-20 11:08:16,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:08:16,654 INFO L93 Difference]: Finished difference Result 66 states and 112 transitions. [2022-11-20 11:08:16,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:08:16,655 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 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 15 [2022-11-20 11:08:16,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:08:16,656 INFO L225 Difference]: With dead ends: 66 [2022-11-20 11:08:16,656 INFO L226 Difference]: Without dead ends: 66 [2022-11-20 11:08:16,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=78, Invalid=321, Unknown=21, NotChecked=0, Total=420 [2022-11-20 11:08:16,657 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 105 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:08:16,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 53 Invalid, 0 Unknown, 105 Unchecked, 0.2s Time] [2022-11-20 11:08:16,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-20 11:08:16,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2022-11-20 11:08:16,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 55 states have (on average 1.8727272727272728) internal successors, (103), 57 states have internal predecessors, (103), 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) [2022-11-20 11:08:16,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 103 transitions. [2022-11-20 11:08:16,660 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 103 transitions. Word has length 15 [2022-11-20 11:08:16,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:08:16,660 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 103 transitions. [2022-11-20 11:08:16,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 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) [2022-11-20 11:08:16,661 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 103 transitions. [2022-11-20 11:08:16,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 11:08:16,662 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:08:16,662 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:08:16,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-20 11:08:16,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:08:16,871 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:08:16,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:08:16,871 INFO L85 PathProgramCache]: Analyzing trace with hash -978161787, now seen corresponding path program 11 times [2022-11-20 11:08:16,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:08:16,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1660341319] [2022-11-20 11:08:16,871 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 11:08:16,871 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:08:16,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:08:16,872 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:08:16,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-20 11:08:17,068 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-20 11:08:17,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:08:17,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-20 11:08:17,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:08:17,121 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-20 11:08:17,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 45 [2022-11-20 11:08:17,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:17,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:08:17,231 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-20 11:08:17,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-20 11:08:17,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:17,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:17,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:17,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:17,550 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:08:17,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:08:20,212 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:08:20,212 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:08:20,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1660341319] [2022-11-20 11:08:20,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1660341319] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:08:20,212 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:08:20,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-11-20 11:08:20,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543517830] [2022-11-20 11:08:20,213 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:08:20,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:08:20,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:08:20,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:08:20,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=199, Unknown=2, NotChecked=0, Total=240 [2022-11-20 11:08:20,214 INFO L87 Difference]: Start difference. First operand 58 states and 103 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 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) [2022-11-20 11:08:20,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:08:20,592 INFO L93 Difference]: Finished difference Result 58 states and 101 transitions. [2022-11-20 11:08:20,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:08:20,593 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 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 15 [2022-11-20 11:08:20,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:08:20,594 INFO L225 Difference]: With dead ends: 58 [2022-11-20 11:08:20,594 INFO L226 Difference]: Without dead ends: 58 [2022-11-20 11:08:20,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=63, Invalid=315, Unknown=2, NotChecked=0, Total=380 [2022-11-20 11:08:20,594 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 116 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:08:20,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 88 Invalid, 0 Unknown, 116 Unchecked, 0.2s Time] [2022-11-20 11:08:20,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-20 11:08:20,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-11-20 11:08:20,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 55 states have (on average 1.8363636363636364) internal successors, (101), 57 states have internal predecessors, (101), 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) [2022-11-20 11:08:20,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 101 transitions. [2022-11-20 11:08:20,597 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 101 transitions. Word has length 15 [2022-11-20 11:08:20,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:08:20,598 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 101 transitions. [2022-11-20 11:08:20,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 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) [2022-11-20 11:08:20,598 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 101 transitions. [2022-11-20 11:08:20,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 11:08:20,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:08:20,599 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:08:20,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-20 11:08:20,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:08:20,807 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:08:20,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:08:20,807 INFO L85 PathProgramCache]: Analyzing trace with hash -154747534, now seen corresponding path program 12 times [2022-11-20 11:08:20,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:08:20,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1191138492] [2022-11-20 11:08:20,808 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 11:08:20,808 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:08:20,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:08:20,809 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:08:20,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-20 11:08:21,026 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-20 11:08:21,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:08:21,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-20 11:08:21,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:08:21,124 INFO L321 Elim1Store]: treesize reduction 118, result has 24.4 percent of original size [2022-11-20 11:08:21,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 38 treesize of output 65 [2022-11-20 11:08:21,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:21,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:08:21,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:08:21,305 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-20 11:08:21,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 27 [2022-11-20 11:08:21,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:22,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:22,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:22,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:22,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:23,172 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:08:23,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:08:24,379 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:08:24,379 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:08:24,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1191138492] [2022-11-20 11:08:24,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1191138492] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:08:24,379 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:08:24,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-20 11:08:24,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326582141] [2022-11-20 11:08:24,379 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:08:24,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:08:24,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:08:24,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:08:24,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=260, Unknown=1, NotChecked=0, Total=306 [2022-11-20 11:08:24,381 INFO L87 Difference]: Start difference. First operand 58 states and 101 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 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) [2022-11-20 11:08:24,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:08:24,433 INFO L93 Difference]: Finished difference Result 71 states and 120 transitions. [2022-11-20 11:08:24,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:08:24,434 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 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 [2022-11-20 11:08:24,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:08:24,435 INFO L225 Difference]: With dead ends: 71 [2022-11-20 11:08:24,435 INFO L226 Difference]: Without dead ends: 71 [2022-11-20 11:08:24,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=45, Invalid=260, Unknown=1, NotChecked=0, Total=306 [2022-11-20 11:08:24,436 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:08:24,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 66 Unchecked, 0.1s Time] [2022-11-20 11:08:24,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-20 11:08:24,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2022-11-20 11:08:24,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 66 states have (on average 1.803030303030303) internal successors, (119), 68 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) [2022-11-20 11:08:24,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 119 transitions. [2022-11-20 11:08:24,439 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 119 transitions. Word has length 16 [2022-11-20 11:08:24,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:08:24,440 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 119 transitions. [2022-11-20 11:08:24,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 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) [2022-11-20 11:08:24,440 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 119 transitions. [2022-11-20 11:08:24,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 11:08:24,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:08:24,441 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:08:24,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Ended with exit code 0 [2022-11-20 11:08:24,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:08:24,653 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:08:24,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:08:24,654 INFO L85 PathProgramCache]: Analyzing trace with hash 364995542, now seen corresponding path program 13 times [2022-11-20 11:08:24,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:08:24,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1110769701] [2022-11-20 11:08:24,654 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 11:08:24,654 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:08:24,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:08:24,655 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:08:24,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-20 11:08:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:24,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 11:08:24,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:08:24,944 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-20 11:08:24,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 45 [2022-11-20 11:08:24,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:25,022 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-20 11:08:25,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-20 11:08:25,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:25,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:25,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:25,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:25,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:25,306 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:08:25,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:08:25,417 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_715 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (_ bv0 8) ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_715) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv2 32))))))) is different from false [2022-11-20 11:08:25,428 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_715 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_715) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv3 32)))) (_ bv0 8)))) is different from false [2022-11-20 11:08:25,438 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_715 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_715) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv4 32)))) (_ bv0 8)))) is different from false [2022-11-20 11:08:27,808 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2022-11-20 11:08:27,808 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:08:27,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1110769701] [2022-11-20 11:08:27,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1110769701] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:08:27,809 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:08:27,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-20 11:08:27,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600970114] [2022-11-20 11:08:27,809 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:08:27,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:08:27,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:08:27,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:08:27,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=165, Unknown=17, NotChecked=84, Total=306 [2022-11-20 11:08:27,810 INFO L87 Difference]: Start difference. First operand 69 states and 119 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 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) [2022-11-20 11:08:28,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:08:28,223 INFO L93 Difference]: Finished difference Result 69 states and 118 transitions. [2022-11-20 11:08:28,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:08:28,224 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 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 [2022-11-20 11:08:28,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:08:28,224 INFO L225 Difference]: With dead ends: 69 [2022-11-20 11:08:28,224 INFO L226 Difference]: Without dead ends: 69 [2022-11-20 11:08:28,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=53, Invalid=214, Unknown=17, NotChecked=96, Total=380 [2022-11-20 11:08:28,226 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 157 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:08:28,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 0 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 0 Unknown, 157 Unchecked, 0.2s Time] [2022-11-20 11:08:28,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-20 11:08:28,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-11-20 11:08:28,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 66 states have (on average 1.7878787878787878) internal successors, (118), 68 states have internal predecessors, (118), 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) [2022-11-20 11:08:28,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 118 transitions. [2022-11-20 11:08:28,229 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 118 transitions. Word has length 16 [2022-11-20 11:08:28,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:08:28,229 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 118 transitions. [2022-11-20 11:08:28,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 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) [2022-11-20 11:08:28,230 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 118 transitions. [2022-11-20 11:08:28,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 11:08:28,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:08:28,230 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:08:28,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-20 11:08:28,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:08:28,443 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:08:28,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:08:28,443 INFO L85 PathProgramCache]: Analyzing trace with hash -258457406, now seen corresponding path program 14 times [2022-11-20 11:08:28,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:08:28,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1339922927] [2022-11-20 11:08:28,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:08:28,443 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:08:28,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:08:28,445 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:08:28,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-20 11:08:28,651 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:08:28,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:08:28,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-20 11:08:28,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:08:28,754 INFO L321 Elim1Store]: treesize reduction 118, result has 24.4 percent of original size [2022-11-20 11:08:28,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 38 treesize of output 65 [2022-11-20 11:08:28,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:28,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:08:28,957 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-20 11:08:28,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 27 [2022-11-20 11:08:29,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:08:29,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:30,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:30,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:30,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:30,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:31,189 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:08:31,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:08:32,366 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:08:32,366 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:08:32,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1339922927] [2022-11-20 11:08:32,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1339922927] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:08:32,366 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:08:32,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-20 11:08:32,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228427215] [2022-11-20 11:08:32,366 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:08:32,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:08:32,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:08:32,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:08:32,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=258, Unknown=3, NotChecked=0, Total=306 [2022-11-20 11:08:32,368 INFO L87 Difference]: Start difference. First operand 69 states and 118 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 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) [2022-11-20 11:08:32,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:08:32,456 INFO L93 Difference]: Finished difference Result 80 states and 130 transitions. [2022-11-20 11:08:32,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:08:32,457 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 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 [2022-11-20 11:08:32,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:08:32,458 INFO L225 Difference]: With dead ends: 80 [2022-11-20 11:08:32,458 INFO L226 Difference]: Without dead ends: 80 [2022-11-20 11:08:32,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=45, Invalid=258, Unknown=3, NotChecked=0, Total=306 [2022-11-20 11:08:32,459 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 117 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:08:32,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 0 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 117 Unchecked, 0.1s Time] [2022-11-20 11:08:32,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-20 11:08:32,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2022-11-20 11:08:32,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 75 states have (on average 1.72) internal successors, (129), 77 states have internal predecessors, (129), 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) [2022-11-20 11:08:32,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 129 transitions. [2022-11-20 11:08:32,463 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 129 transitions. Word has length 16 [2022-11-20 11:08:32,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:08:32,463 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 129 transitions. [2022-11-20 11:08:32,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 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) [2022-11-20 11:08:32,463 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 129 transitions. [2022-11-20 11:08:32,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 11:08:32,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:08:32,464 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:08:32,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-20 11:08:32,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:08:32,671 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:08:32,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:08:32,671 INFO L85 PathProgramCache]: Analyzing trace with hash 261285670, now seen corresponding path program 15 times [2022-11-20 11:08:32,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:08:32,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [912979830] [2022-11-20 11:08:32,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:08:32,671 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:08:32,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:08:32,672 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:08:32,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-20 11:08:32,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 11:08:32,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:08:32,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-20 11:08:32,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:08:32,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:08:32,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:08:32,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:08:32,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-20 11:08:33,017 INFO L321 Elim1Store]: treesize reduction 118, result has 24.4 percent of original size [2022-11-20 11:08:33,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 38 treesize of output 65 [2022-11-20 11:08:33,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:33,232 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 11:08:33,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 11:08:33,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:08:33,282 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-20 11:08:33,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 27 [2022-11-20 11:08:33,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:34,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:34,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:34,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:34,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:35,030 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:08:35,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:08:38,189 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:08:38,189 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:08:38,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [912979830] [2022-11-20 11:08:38,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [912979830] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:08:38,190 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:08:38,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-20 11:08:38,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293161800] [2022-11-20 11:08:38,190 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:08:38,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:08:38,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:08:38,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:08:38,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=260, Unknown=1, NotChecked=0, Total=306 [2022-11-20 11:08:38,191 INFO L87 Difference]: Start difference. First operand 78 states and 129 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 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) [2022-11-20 11:08:38,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:08:38,283 INFO L93 Difference]: Finished difference Result 87 states and 142 transitions. [2022-11-20 11:08:38,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:08:38,284 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 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 [2022-11-20 11:08:38,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:08:38,285 INFO L225 Difference]: With dead ends: 87 [2022-11-20 11:08:38,285 INFO L226 Difference]: Without dead ends: 87 [2022-11-20 11:08:38,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=45, Invalid=260, Unknown=1, NotChecked=0, Total=306 [2022-11-20 11:08:38,285 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 167 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:08:38,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 167 Unchecked, 0.1s Time] [2022-11-20 11:08:38,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-11-20 11:08:38,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 76. [2022-11-20 11:08:38,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 73 states have (on average 1.7534246575342465) internal successors, (128), 75 states have internal predecessors, (128), 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) [2022-11-20 11:08:38,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 128 transitions. [2022-11-20 11:08:38,289 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 128 transitions. Word has length 16 [2022-11-20 11:08:38,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:08:38,289 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 128 transitions. [2022-11-20 11:08:38,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 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) [2022-11-20 11:08:38,289 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 128 transitions. [2022-11-20 11:08:38,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 11:08:38,289 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:08:38,289 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:08:38,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Ended with exit code 0 [2022-11-20 11:08:38,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:08:38,490 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:08:38,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:08:38,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1574797944, now seen corresponding path program 16 times [2022-11-20 11:08:38,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:08:38,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1004636746] [2022-11-20 11:08:38,491 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:08:38,491 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:08:38,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:08:38,492 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:08:38,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-20 11:08:38,674 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 11:08:38,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:08:38,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 11:08:38,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:08:38,726 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-20 11:08:38,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 45 [2022-11-20 11:08:38,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:38,820 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-20 11:08:38,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-20 11:08:38,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:38,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:38,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:39,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:39,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:39,093 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:08:39,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:08:39,199 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_815 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_815) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv2 32)))) (_ bv0 8)))) is different from false [2022-11-20 11:08:39,209 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_815 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_815) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv3 32)))) (_ bv0 8)))) is different from false [2022-11-20 11:08:39,220 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_815 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_815) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv4 32)))) (_ bv0 8)))) is different from false [2022-11-20 11:08:39,495 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2022-11-20 11:08:39,495 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:08:39,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1004636746] [2022-11-20 11:08:39,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1004636746] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:08:39,495 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:08:39,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-20 11:08:39,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159331956] [2022-11-20 11:08:39,496 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:08:39,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:08:39,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:08:39,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:08:39,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=166, Unknown=16, NotChecked=84, Total=306 [2022-11-20 11:08:39,497 INFO L87 Difference]: Start difference. First operand 76 states and 128 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 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) [2022-11-20 11:08:40,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:08:40,166 INFO L93 Difference]: Finished difference Result 76 states and 126 transitions. [2022-11-20 11:08:40,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:08:40,167 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 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 [2022-11-20 11:08:40,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:08:40,167 INFO L225 Difference]: With dead ends: 76 [2022-11-20 11:08:40,167 INFO L226 Difference]: Without dead ends: 76 [2022-11-20 11:08:40,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=85, Invalid=331, Unknown=16, NotChecked=120, Total=552 [2022-11-20 11:08:40,168 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 120 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:08:40,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 156 Invalid, 0 Unknown, 120 Unchecked, 0.3s Time] [2022-11-20 11:08:40,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-20 11:08:40,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2022-11-20 11:08:40,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 72 states have (on average 1.7361111111111112) internal successors, (125), 74 states have internal predecessors, (125), 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) [2022-11-20 11:08:40,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 125 transitions. [2022-11-20 11:08:40,171 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 125 transitions. Word has length 16 [2022-11-20 11:08:40,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:08:40,171 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 125 transitions. [2022-11-20 11:08:40,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 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) [2022-11-20 11:08:40,171 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 125 transitions. [2022-11-20 11:08:40,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 11:08:40,172 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:08:40,172 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:08:40,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-20 11:08:40,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:08:40,379 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:08:40,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:08:40,379 INFO L85 PathProgramCache]: Analyzing trace with hash -502419339, now seen corresponding path program 17 times [2022-11-20 11:08:40,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:08:40,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1131560094] [2022-11-20 11:08:40,380 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 11:08:40,380 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:08:40,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:08:40,381 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:08:40,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-20 11:08:40,641 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-20 11:08:40,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:08:40,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-20 11:08:40,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:08:40,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:08:40,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:08:40,718 INFO L321 Elim1Store]: treesize reduction 42, result has 35.4 percent of original size [2022-11-20 11:08:40,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 47 [2022-11-20 11:08:40,743 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 11:08:40,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 21 [2022-11-20 11:08:40,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:08:40,912 INFO L321 Elim1Store]: treesize reduction 6, result has 71.4 percent of original size [2022-11-20 11:08:40,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 32 [2022-11-20 11:08:41,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:08:41,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:41,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:41,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:41,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:41,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:41,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:41,821 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:08:41,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:08:42,015 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base|))) (or (not (bvult (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset|) .cse0)) (not (bvult (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset| (_ bv1 32)) .cse0)) (forall ((v_ArrVal_851 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_851) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv2 32)))) (_ bv0 8)))))) is different from false [2022-11-20 11:08:45,214 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 1 times theorem prover too weak. 0 trivial. 5 not checked. [2022-11-20 11:08:45,214 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:08:45,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1131560094] [2022-11-20 11:08:45,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1131560094] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:08:45,215 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:08:45,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-20 11:08:45,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972313213] [2022-11-20 11:08:45,215 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:08:45,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:08:45,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:08:45,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:08:45,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=292, Unknown=5, NotChecked=34, Total=380 [2022-11-20 11:08:45,216 INFO L87 Difference]: Start difference. First operand 75 states and 125 transitions. Second operand has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 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) [2022-11-20 11:08:45,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:08:45,641 INFO L93 Difference]: Finished difference Result 87 states and 139 transitions. [2022-11-20 11:08:45,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:08:45,642 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 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 [2022-11-20 11:08:45,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:08:45,643 INFO L225 Difference]: With dead ends: 87 [2022-11-20 11:08:45,643 INFO L226 Difference]: Without dead ends: 87 [2022-11-20 11:08:45,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=62, Invalid=357, Unknown=5, NotChecked=38, Total=462 [2022-11-20 11:08:45,644 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 118 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:08:45,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 0 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 118 Unchecked, 0.1s Time] [2022-11-20 11:08:45,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-11-20 11:08:45,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2022-11-20 11:08:45,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 84 states have (on average 1.6547619047619047) internal successors, (139), 86 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) [2022-11-20 11:08:45,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 139 transitions. [2022-11-20 11:08:45,647 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 139 transitions. Word has length 17 [2022-11-20 11:08:45,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:08:45,647 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 139 transitions. [2022-11-20 11:08:45,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 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) [2022-11-20 11:08:45,647 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 139 transitions. [2022-11-20 11:08:45,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 11:08:45,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:08:45,648 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:08:45,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-20 11:08:45,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:08:45,861 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:08:45,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:08:45,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1570253167, now seen corresponding path program 18 times [2022-11-20 11:08:45,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:08:45,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1795335139] [2022-11-20 11:08:45,862 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 11:08:45,862 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:08:45,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:08:45,862 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:08:45,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-20 11:08:46,118 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-20 11:08:46,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:08:46,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-20 11:08:46,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:08:46,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:08:46,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:08:46,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:08:46,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-20 11:08:46,262 INFO L321 Elim1Store]: treesize reduction 118, result has 24.4 percent of original size [2022-11-20 11:08:46,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 38 treesize of output 65 [2022-11-20 11:08:46,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:46,410 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 11:08:46,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 11:08:46,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:08:46,463 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-20 11:08:46,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 27 [2022-11-20 11:08:46,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:47,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:47,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:47,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:47,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:48,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:48,399 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:08:48,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:08:49,918 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:08:49,918 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:08:49,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1795335139] [2022-11-20 11:08:49,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1795335139] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:08:49,918 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:08:49,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-20 11:08:49,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693996056] [2022-11-20 11:08:49,918 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:08:49,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:08:49,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:08:49,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:08:49,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=321, Unknown=4, NotChecked=0, Total=380 [2022-11-20 11:08:49,920 INFO L87 Difference]: Start difference. First operand 87 states and 139 transitions. Second operand has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 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) [2022-11-20 11:08:51,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:08:51,156 INFO L93 Difference]: Finished difference Result 112 states and 184 transitions. [2022-11-20 11:08:51,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:08:51,157 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 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 [2022-11-20 11:08:51,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:08:51,158 INFO L225 Difference]: With dead ends: 112 [2022-11-20 11:08:51,158 INFO L226 Difference]: Without dead ends: 112 [2022-11-20 11:08:51,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=75, Invalid=457, Unknown=20, NotChecked=0, Total=552 [2022-11-20 11:08:51,158 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:08:51,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 67 Unchecked, 0.0s Time] [2022-11-20 11:08:51,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-20 11:08:51,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2022-11-20 11:08:51,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 107 states have (on average 1.6822429906542056) internal successors, (180), 109 states have internal predecessors, (180), 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) [2022-11-20 11:08:51,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 180 transitions. [2022-11-20 11:08:51,162 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 180 transitions. Word has length 17 [2022-11-20 11:08:51,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:08:51,163 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 180 transitions. [2022-11-20 11:08:51,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 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) [2022-11-20 11:08:51,163 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 180 transitions. [2022-11-20 11:08:51,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 11:08:51,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:08:51,164 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:08:51,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-20 11:08:51,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:08:51,371 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:08:51,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:08:51,371 INFO L85 PathProgramCache]: Analyzing trace with hash 40687791, now seen corresponding path program 19 times [2022-11-20 11:08:51,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:08:51,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2006906123] [2022-11-20 11:08:51,371 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 11:08:51,372 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:08:51,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:08:51,373 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:08:51,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-20 11:08:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:08:51,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 11:08:51,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:08:51,652 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-20 11:08:51,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 45 [2022-11-20 11:08:51,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:51,743 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-20 11:08:51,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-20 11:08:51,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:51,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:51,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:51,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:51,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:52,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:52,079 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:08:52,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:08:52,259 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_924 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_924) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv3 32)))) (_ bv0 8)))) is different from false [2022-11-20 11:08:52,270 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_924 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_924) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv4 32)))) (_ bv0 8)))) is different from false [2022-11-20 11:08:52,650 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2022-11-20 11:08:52,650 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:08:52,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2006906123] [2022-11-20 11:08:52,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2006906123] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:08:52,651 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:08:52,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-20 11:08:52,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374219862] [2022-11-20 11:08:52,651 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:08:52,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:08:52,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:08:52,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:08:52,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=239, Unknown=29, NotChecked=66, Total=380 [2022-11-20 11:08:52,652 INFO L87 Difference]: Start difference. First operand 110 states and 180 transitions. Second operand has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 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) [2022-11-20 11:08:53,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:08:53,479 INFO L93 Difference]: Finished difference Result 115 states and 184 transitions. [2022-11-20 11:08:53,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:08:53,479 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 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 [2022-11-20 11:08:53,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:08:53,480 INFO L225 Difference]: With dead ends: 115 [2022-11-20 11:08:53,480 INFO L226 Difference]: Without dead ends: 115 [2022-11-20 11:08:53,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=109, Invalid=516, Unknown=33, NotChecked=98, Total=756 [2022-11-20 11:08:53,481 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 222 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:08:53,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 140 Invalid, 0 Unknown, 222 Unchecked, 0.3s Time] [2022-11-20 11:08:53,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-20 11:08:53,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 110. [2022-11-20 11:08:53,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 107 states have (on average 1.6635514018691588) internal successors, (178), 109 states have internal predecessors, (178), 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) [2022-11-20 11:08:53,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 178 transitions. [2022-11-20 11:08:53,486 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 178 transitions. Word has length 17 [2022-11-20 11:08:53,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:08:53,486 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 178 transitions. [2022-11-20 11:08:53,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 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) [2022-11-20 11:08:53,486 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 178 transitions. [2022-11-20 11:08:53,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 11:08:53,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:08:53,487 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:08:53,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-11-20 11:08:53,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:08:53,700 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:08:53,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:08:53,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1640696943, now seen corresponding path program 20 times [2022-11-20 11:08:53,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:08:53,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [319190227] [2022-11-20 11:08:53,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:08:53,701 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:08:53,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:08:53,702 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:08:53,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-20 11:08:53,951 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:08:53,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:08:53,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-20 11:08:53,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:08:54,050 INFO L321 Elim1Store]: treesize reduction 118, result has 24.4 percent of original size [2022-11-20 11:08:54,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 38 treesize of output 65 [2022-11-20 11:08:54,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:54,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:08:54,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:08:54,223 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-20 11:08:54,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 27 [2022-11-20 11:08:54,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:55,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:55,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:55,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:55,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:56,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:56,392 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:08:56,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:08:57,640 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 3 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:08:57,640 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:08:57,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [319190227] [2022-11-20 11:08:57,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [319190227] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:08:57,642 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:08:57,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-20 11:08:57,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23171014] [2022-11-20 11:08:57,642 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:08:57,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:08:57,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:08:57,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:08:57,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=319, Unknown=6, NotChecked=0, Total=380 [2022-11-20 11:08:57,643 INFO L87 Difference]: Start difference. First operand 110 states and 178 transitions. Second operand has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 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) [2022-11-20 11:08:58,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:08:58,769 INFO L93 Difference]: Finished difference Result 118 states and 195 transitions. [2022-11-20 11:08:58,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:08:58,770 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 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 [2022-11-20 11:08:58,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:08:58,771 INFO L225 Difference]: With dead ends: 118 [2022-11-20 11:08:58,771 INFO L226 Difference]: Without dead ends: 118 [2022-11-20 11:08:58,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=75, Invalid=451, Unknown=26, NotChecked=0, Total=552 [2022-11-20 11:08:58,771 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:08:58,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 46 Unchecked, 0.0s Time] [2022-11-20 11:08:58,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-11-20 11:08:58,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 107. [2022-11-20 11:08:58,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 104 states have (on average 1.6730769230769231) internal successors, (174), 106 states have internal predecessors, (174), 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) [2022-11-20 11:08:58,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 174 transitions. [2022-11-20 11:08:58,776 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 174 transitions. Word has length 17 [2022-11-20 11:08:58,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:08:58,776 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 174 transitions. [2022-11-20 11:08:58,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 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) [2022-11-20 11:08:58,776 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 174 transitions. [2022-11-20 11:08:58,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 11:08:58,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:08:58,777 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:08:58,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-11-20 11:08:58,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:08:58,990 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:08:58,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:08:58,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1795395823, now seen corresponding path program 21 times [2022-11-20 11:08:58,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:08:58,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208475343] [2022-11-20 11:08:58,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:08:58,991 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:08:58,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:08:58,992 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:08:58,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-20 11:08:59,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-20 11:08:59,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:08:59,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-20 11:08:59,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:08:59,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:08:59,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:08:59,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:08:59,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-20 11:08:59,378 INFO L321 Elim1Store]: treesize reduction 118, result has 24.4 percent of original size [2022-11-20 11:08:59,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 38 treesize of output 65 [2022-11-20 11:08:59,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:08:59,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:08:59,560 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-20 11:08:59,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 27 [2022-11-20 11:08:59,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 11:08:59,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:00,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:00,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:00,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:01,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:01,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:01,593 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:09:01,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:09:05,478 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:09:05,478 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:09:05,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1208475343] [2022-11-20 11:09:05,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1208475343] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:09:05,479 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:09:05,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-20 11:09:05,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698371834] [2022-11-20 11:09:05,479 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:09:05,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:09:05,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:09:05,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:09:05,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=321, Unknown=4, NotChecked=0, Total=380 [2022-11-20 11:09:05,480 INFO L87 Difference]: Start difference. First operand 107 states and 174 transitions. Second operand has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 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) [2022-11-20 11:09:07,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:07,027 INFO L93 Difference]: Finished difference Result 114 states and 189 transitions. [2022-11-20 11:09:07,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 11:09:07,028 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 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 [2022-11-20 11:09:07,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:07,028 INFO L225 Difference]: With dead ends: 114 [2022-11-20 11:09:07,028 INFO L226 Difference]: Without dead ends: 114 [2022-11-20 11:09:07,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=75, Invalid=456, Unknown=21, NotChecked=0, Total=552 [2022-11-20 11:09:07,029 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:07,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 55 Unchecked, 0.0s Time] [2022-11-20 11:09:07,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-11-20 11:09:07,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 104. [2022-11-20 11:09:07,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 101 states have (on average 1.683168316831683) internal successors, (170), 103 states have internal predecessors, (170), 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) [2022-11-20 11:09:07,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 170 transitions. [2022-11-20 11:09:07,033 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 170 transitions. Word has length 17 [2022-11-20 11:09:07,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:07,033 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 170 transitions. [2022-11-20 11:09:07,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 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) [2022-11-20 11:09:07,033 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 170 transitions. [2022-11-20 11:09:07,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 11:09:07,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:07,034 INFO L195 NwaCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:07,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-11-20 11:09:07,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:09:07,243 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:09:07,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:07,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1766773869, now seen corresponding path program 4 times [2022-11-20 11:09:07,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:09:07,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [927488855] [2022-11-20 11:09:07,243 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:09:07,243 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:09:07,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:09:07,244 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:09:07,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-20 11:09:07,526 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 11:09:07,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:09:07,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-20 11:09:07,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:07,589 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-20 11:09:07,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 45 [2022-11-20 11:09:07,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:07,670 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-20 11:09:07,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-20 11:09:07,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:07,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:07,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:07,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:07,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:07,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:07,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:08,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:08,086 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:09:08,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:09:08,212 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1037 (Array (_ BitVec 32) (_ BitVec 32)))) (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_1037) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv2 32)))) (_ bv0 8))) is different from false [2022-11-20 11:09:08,304 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1037 (Array (_ BitVec 32) (_ BitVec 32)))) (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_1037) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv4 32)))) (_ bv0 8))) is different from false [2022-11-20 11:09:08,398 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1037 (Array (_ BitVec 32) (_ BitVec 32)))) (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_1037) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv6 32)))) (_ bv0 8))) is different from false [2022-11-20 11:09:08,876 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 18 not checked. [2022-11-20 11:09:08,876 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:09:08,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [927488855] [2022-11-20 11:09:08,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [927488855] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:09:08,877 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:09:08,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2022-11-20 11:09:08,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784938992] [2022-11-20 11:09:08,877 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:09:08,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 11:09:08,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:09:08,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 11:09:08,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=316, Unknown=61, NotChecked=120, Total=552 [2022-11-20 11:09:08,878 INFO L87 Difference]: Start difference. First operand 104 states and 170 transitions. Second operand has 24 states, 24 states have (on average 1.375) internal successors, (33), 23 states have internal predecessors, (33), 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) [2022-11-20 11:09:10,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:10,178 INFO L93 Difference]: Finished difference Result 115 states and 165 transitions. [2022-11-20 11:09:10,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 11:09:10,179 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.375) internal successors, (33), 23 states have internal predecessors, (33), 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 [2022-11-20 11:09:10,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:10,180 INFO L225 Difference]: With dead ends: 115 [2022-11-20 11:09:10,180 INFO L226 Difference]: Without dead ends: 115 [2022-11-20 11:09:10,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=147, Invalid=855, Unknown=66, NotChecked=192, Total=1260 [2022-11-20 11:09:10,181 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 238 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:10,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 0 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 247 Invalid, 0 Unknown, 238 Unchecked, 0.5s Time] [2022-11-20 11:09:10,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-20 11:09:10,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 89. [2022-11-20 11:09:10,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 86 states have (on average 1.6046511627906976) internal successors, (138), 88 states have internal predecessors, (138), 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) [2022-11-20 11:09:10,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 138 transitions. [2022-11-20 11:09:10,185 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 138 transitions. Word has length 17 [2022-11-20 11:09:10,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:10,185 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 138 transitions. [2022-11-20 11:09:10,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.375) internal successors, (33), 23 states have internal predecessors, (33), 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) [2022-11-20 11:09:10,186 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 138 transitions. [2022-11-20 11:09:10,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 11:09:10,186 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:10,186 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:10,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Ended with exit code 0 [2022-11-20 11:09:10,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:09:10,391 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:09:10,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:10,391 INFO L85 PathProgramCache]: Analyzing trace with hash -490291903, now seen corresponding path program 22 times [2022-11-20 11:09:10,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:09:10,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099415459] [2022-11-20 11:09:10,392 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:09:10,392 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:09:10,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:09:10,392 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:09:10,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-20 11:09:10,607 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 11:09:10,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:09:10,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 11:09:10,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:10,661 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-20 11:09:10,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 45 [2022-11-20 11:09:10,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:10,760 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-20 11:09:10,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-20 11:09:10,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:10,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:10,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:10,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:10,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:11,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:11,081 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:09:11,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:09:11,127 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1072 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_1072) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv1 32)))) (_ bv0 8)))) is different from false [2022-11-20 11:09:11,138 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1072 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_1072) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv2 32)))) (_ bv0 8)))) is different from false [2022-11-20 11:09:11,287 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1072 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_1072) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv5 32)))) (_ bv0 8)))) is different from false [2022-11-20 11:09:11,601 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 12 not checked. [2022-11-20 11:09:11,601 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:09:11,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2099415459] [2022-11-20 11:09:11,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2099415459] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:09:11,601 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:09:11,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-20 11:09:11,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265148764] [2022-11-20 11:09:11,602 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:09:11,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:09:11,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:09:11,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:09:11,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=217, Unknown=22, NotChecked=96, Total=380 [2022-11-20 11:09:11,603 INFO L87 Difference]: Start difference. First operand 89 states and 138 transitions. Second operand has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 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) [2022-11-20 11:09:12,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:12,352 INFO L93 Difference]: Finished difference Result 91 states and 138 transitions. [2022-11-20 11:09:12,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:09:12,352 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 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 [2022-11-20 11:09:12,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:12,353 INFO L225 Difference]: With dead ends: 91 [2022-11-20 11:09:12,353 INFO L226 Difference]: Without dead ends: 91 [2022-11-20 11:09:12,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=99, Invalid=443, Unknown=22, NotChecked=138, Total=702 [2022-11-20 11:09:12,354 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 147 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:12,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 132 Invalid, 0 Unknown, 147 Unchecked, 0.3s Time] [2022-11-20 11:09:12,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-20 11:09:12,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2022-11-20 11:09:12,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 86 states have (on average 1.5813953488372092) internal successors, (136), 88 states have internal predecessors, (136), 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) [2022-11-20 11:09:12,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 136 transitions. [2022-11-20 11:09:12,357 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 136 transitions. Word has length 17 [2022-11-20 11:09:12,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:12,358 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 136 transitions. [2022-11-20 11:09:12,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 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) [2022-11-20 11:09:12,358 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 136 transitions. [2022-11-20 11:09:12,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 11:09:12,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:12,359 INFO L195 NwaCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:12,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2022-11-20 11:09:12,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:09:12,571 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:09:12,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:12,572 INFO L85 PathProgramCache]: Analyzing trace with hash -686812605, now seen corresponding path program 5 times [2022-11-20 11:09:12,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:09:12,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [867947224] [2022-11-20 11:09:12,572 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 11:09:12,572 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:09:12,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:09:12,573 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:09:12,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-20 11:09:12,838 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-11-20 11:09:12,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:09:12,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-20 11:09:12,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:12,928 INFO L321 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2022-11-20 11:09:12,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 42 [2022-11-20 11:09:12,960 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 11:09:12,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-20 11:09:12,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:13,116 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 11:09:13,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-20 11:09:13,136 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:09:13,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-20 11:09:13,301 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 11:09:13,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 21 [2022-11-20 11:09:13,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2022-11-20 11:09:13,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2022-11-20 11:09:14,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2022-11-20 11:09:14,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2022-11-20 11:09:14,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2022-11-20 11:09:14,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:14,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:14,972 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:09:14,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 10 [2022-11-20 11:09:14,976 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:09:14,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:09:20,119 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:09:20,119 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:09:20,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [867947224] [2022-11-20 11:09:20,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [867947224] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:09:20,119 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:09:20,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2022-11-20 11:09:20,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402263913] [2022-11-20 11:09:20,120 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:09:20,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 11:09:20,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:09:20,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 11:09:20,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=511, Unknown=1, NotChecked=0, Total=600 [2022-11-20 11:09:20,121 INFO L87 Difference]: Start difference. First operand 89 states and 136 transitions. Second operand has 25 states, 25 states have (on average 1.36) internal successors, (34), 24 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) [2022-11-20 11:09:21,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:21,272 INFO L93 Difference]: Finished difference Result 93 states and 135 transitions. [2022-11-20 11:09:21,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:09:21,275 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.36) internal successors, (34), 24 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 [2022-11-20 11:09:21,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:21,275 INFO L225 Difference]: With dead ends: 93 [2022-11-20 11:09:21,275 INFO L226 Difference]: Without dead ends: 93 [2022-11-20 11:09:21,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=114, Invalid=697, Unknown=1, NotChecked=0, Total=812 [2022-11-20 11:09:21,276 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 26 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 318 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:21,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 0 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 318 Unchecked, 0.2s Time] [2022-11-20 11:09:21,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-20 11:09:21,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 81. [2022-11-20 11:09:21,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 78 states have (on average 1.5384615384615385) internal successors, (120), 80 states have internal predecessors, (120), 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) [2022-11-20 11:09:21,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 120 transitions. [2022-11-20 11:09:21,280 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 120 transitions. Word has length 17 [2022-11-20 11:09:21,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:21,280 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 120 transitions. [2022-11-20 11:09:21,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.36) internal successors, (34), 24 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) [2022-11-20 11:09:21,280 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 120 transitions. [2022-11-20 11:09:21,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 11:09:21,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:21,281 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:21,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2022-11-20 11:09:21,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:09:21,491 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:09:21,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:21,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1604656594, now seen corresponding path program 23 times [2022-11-20 11:09:21,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:09:21,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832416727] [2022-11-20 11:09:21,491 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 11:09:21,491 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:09:21,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:09:21,492 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:09:21,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-20 11:09:21,765 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-20 11:09:21,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:09:21,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-20 11:09:21,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:21,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:09:21,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-20 11:09:21,850 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-20 11:09:21,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 45 [2022-11-20 11:09:21,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:21,994 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 11:09:21,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-20 11:09:22,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:09:22,049 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 11:09:22,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 18 [2022-11-20 11:09:22,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:24,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:24,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:25,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:25,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:25,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:25,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:25,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:09:25,806 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 11:09:25,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 21 [2022-11-20 11:09:25,998 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:09:25,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:09:31,021 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 19 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:09:31,021 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:09:31,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1832416727] [2022-11-20 11:09:31,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1832416727] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:09:31,021 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:09:31,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2022-11-20 11:09:31,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268657249] [2022-11-20 11:09:31,022 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:09:31,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 11:09:31,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:09:31,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 11:09:31,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=399, Unknown=4, NotChecked=0, Total=462 [2022-11-20 11:09:31,023 INFO L87 Difference]: Start difference. First operand 81 states and 120 transitions. Second operand has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 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) [2022-11-20 11:09:32,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:32,311 INFO L93 Difference]: Finished difference Result 89 states and 128 transitions. [2022-11-20 11:09:32,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:09:32,312 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 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 18 [2022-11-20 11:09:32,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:32,313 INFO L225 Difference]: With dead ends: 89 [2022-11-20 11:09:32,313 INFO L226 Difference]: Without dead ends: 89 [2022-11-20 11:09:32,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=71, Invalid=475, Unknown=6, NotChecked=0, Total=552 [2022-11-20 11:09:32,314 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:32,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 76 Unchecked, 0.1s Time] [2022-11-20 11:09:32,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-20 11:09:32,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2022-11-20 11:09:32,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 84 states have (on average 1.4880952380952381) internal successors, (125), 86 states have internal predecessors, (125), 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) [2022-11-20 11:09:32,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 125 transitions. [2022-11-20 11:09:32,317 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 125 transitions. Word has length 18 [2022-11-20 11:09:32,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:32,318 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 125 transitions. [2022-11-20 11:09:32,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 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) [2022-11-20 11:09:32,318 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 125 transitions. [2022-11-20 11:09:32,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 11:09:32,318 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:32,319 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:32,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Ended with exit code 0 [2022-11-20 11:09:32,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:09:32,527 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:09:32,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:32,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1433421002, now seen corresponding path program 24 times [2022-11-20 11:09:32,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:09:32,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [943471685] [2022-11-20 11:09:32,527 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 11:09:32,527 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:09:32,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:09:32,528 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:09:32,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-20 11:09:32,819 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-20 11:09:32,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:09:32,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-20 11:09:32,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:32,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:09:32,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:09:32,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:09:32,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-20 11:09:32,960 INFO L321 Elim1Store]: treesize reduction 118, result has 24.4 percent of original size [2022-11-20 11:09:32,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 38 treesize of output 65 [2022-11-20 11:09:32,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:33,129 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 11:09:33,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 11:09:33,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:09:33,190 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-20 11:09:33,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 27 [2022-11-20 11:09:33,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:34,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:34,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:34,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:34,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:35,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:35,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:35,818 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:09:35,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:09:39,662 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 6 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:09:39,663 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:09:39,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [943471685] [2022-11-20 11:09:39,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [943471685] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:09:39,663 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:09:39,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2022-11-20 11:09:39,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959612797] [2022-11-20 11:09:39,664 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:09:39,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 11:09:39,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:09:39,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 11:09:39,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=384, Unknown=9, NotChecked=0, Total=462 [2022-11-20 11:09:39,665 INFO L87 Difference]: Start difference. First operand 87 states and 125 transitions. Second operand has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 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) [2022-11-20 11:09:41,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:41,984 INFO L93 Difference]: Finished difference Result 115 states and 170 transitions. [2022-11-20 11:09:41,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 11:09:41,984 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 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 18 [2022-11-20 11:09:41,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:41,985 INFO L225 Difference]: With dead ends: 115 [2022-11-20 11:09:41,985 INFO L226 Difference]: Without dead ends: 115 [2022-11-20 11:09:41,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=104, Invalid=574, Unknown=24, NotChecked=0, Total=702 [2022-11-20 11:09:41,986 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:41,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 57 Unchecked, 0.0s Time] [2022-11-20 11:09:41,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-20 11:09:41,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 97. [2022-11-20 11:09:41,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 94 states have (on average 1.5425531914893618) internal successors, (145), 96 states have internal predecessors, (145), 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) [2022-11-20 11:09:41,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 145 transitions. [2022-11-20 11:09:41,990 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 145 transitions. Word has length 18 [2022-11-20 11:09:41,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:41,990 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 145 transitions. [2022-11-20 11:09:41,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 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) [2022-11-20 11:09:41,991 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 145 transitions. [2022-11-20 11:09:41,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 11:09:41,997 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:41,997 INFO L195 NwaCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:42,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-11-20 11:09:42,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:09:42,203 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:09:42,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:42,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1433428199, now seen corresponding path program 4 times [2022-11-20 11:09:42,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:09:42,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1939864661] [2022-11-20 11:09:42,204 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:09:42,204 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:09:42,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:09:42,205 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:09:42,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-20 11:09:42,452 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 11:09:42,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:09:42,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-20 11:09:42,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:42,521 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-20 11:09:42,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 45 [2022-11-20 11:09:42,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:42,606 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-20 11:09:42,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-20 11:09:42,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:42,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:42,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:42,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:42,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:42,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:43,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:43,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:43,110 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:09:43,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:09:43,258 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1234 (Array (_ BitVec 32) (_ BitVec 32)))) (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_1234) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv2 32)))) (_ bv0 8))) is different from false [2022-11-20 11:09:43,270 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1234 (Array (_ BitVec 32) (_ BitVec 32)))) (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_1234) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv3 32)))) (_ bv0 8))) is different from false [2022-11-20 11:09:43,484 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1234 (Array (_ BitVec 32) (_ BitVec 32)))) (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_1234) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv6 32)))) (_ bv0 8))) is different from false [2022-11-20 11:09:44,056 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 18 not checked. [2022-11-20 11:09:44,056 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:09:44,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1939864661] [2022-11-20 11:09:44,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1939864661] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:09:44,056 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:09:44,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2022-11-20 11:09:44,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592691515] [2022-11-20 11:09:44,056 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:09:44,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 11:09:44,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:09:44,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 11:09:44,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=314, Unknown=63, NotChecked=120, Total=552 [2022-11-20 11:09:44,058 INFO L87 Difference]: Start difference. First operand 97 states and 145 transitions. Second operand has 24 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 23 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) [2022-11-20 11:09:45,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:45,426 INFO L93 Difference]: Finished difference Result 104 states and 137 transitions. [2022-11-20 11:09:45,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 11:09:45,427 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 23 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 18 [2022-11-20 11:09:45,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:45,427 INFO L225 Difference]: With dead ends: 104 [2022-11-20 11:09:45,427 INFO L226 Difference]: Without dead ends: 104 [2022-11-20 11:09:45,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=147, Invalid=855, Unknown=66, NotChecked=192, Total=1260 [2022-11-20 11:09:45,428 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 349 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:45,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 0 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 224 Invalid, 0 Unknown, 349 Unchecked, 0.5s Time] [2022-11-20 11:09:45,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-11-20 11:09:45,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 74. [2022-11-20 11:09:45,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 71 states have (on average 1.4788732394366197) internal successors, (105), 73 states have internal predecessors, (105), 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) [2022-11-20 11:09:45,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2022-11-20 11:09:45,431 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 105 transitions. Word has length 18 [2022-11-20 11:09:45,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:45,432 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 105 transitions. [2022-11-20 11:09:45,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 23 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) [2022-11-20 11:09:45,432 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 105 transitions. [2022-11-20 11:09:45,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 11:09:45,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:45,433 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:45,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2022-11-20 11:09:45,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:09:45,646 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:09:45,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:45,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1261108440, now seen corresponding path program 25 times [2022-11-20 11:09:45,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:09:45,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2069355987] [2022-11-20 11:09:45,647 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 11:09:45,647 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:09:45,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:09:45,648 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:09:45,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-20 11:09:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:45,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-20 11:09:45,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:45,923 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-20 11:09:45,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 45 [2022-11-20 11:09:45,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:46,003 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-20 11:09:46,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-20 11:09:46,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:46,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:46,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:46,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:46,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:46,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:46,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:46,432 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:09:46,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:09:46,492 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1272 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_1272) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv1 32)))) (_ bv0 8)))) is different from false [2022-11-20 11:09:46,504 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1272 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_1272) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv2 32)))) (_ bv0 8)))) is different from false [2022-11-20 11:09:47,167 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 11 not checked. [2022-11-20 11:09:47,167 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:09:47,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2069355987] [2022-11-20 11:09:47,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2069355987] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:09:47,168 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:09:47,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2022-11-20 11:09:47,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201272392] [2022-11-20 11:09:47,168 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:09:47,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 11:09:47,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:09:47,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 11:09:47,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=300, Unknown=37, NotChecked=74, Total=462 [2022-11-20 11:09:47,169 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. Second operand has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 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) [2022-11-20 11:09:47,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:47,539 INFO L93 Difference]: Finished difference Result 79 states and 110 transitions. [2022-11-20 11:09:47,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:09:47,540 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 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 18 [2022-11-20 11:09:47,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:47,541 INFO L225 Difference]: With dead ends: 79 [2022-11-20 11:09:47,541 INFO L226 Difference]: Without dead ends: 79 [2022-11-20 11:09:47,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=57, Invalid=331, Unknown=40, NotChecked=78, Total=506 [2022-11-20 11:09:47,541 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 261 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:47,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 125 Invalid, 0 Unknown, 261 Unchecked, 0.3s Time] [2022-11-20 11:09:47,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-20 11:09:47,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2022-11-20 11:09:47,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 70 states have (on average 1.4857142857142858) internal successors, (104), 72 states have internal predecessors, (104), 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) [2022-11-20 11:09:47,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 104 transitions. [2022-11-20 11:09:47,545 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 104 transitions. Word has length 18 [2022-11-20 11:09:47,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:47,545 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 104 transitions. [2022-11-20 11:09:47,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 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) [2022-11-20 11:09:47,545 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 104 transitions. [2022-11-20 11:09:47,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 11:09:47,546 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:47,546 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:47,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2022-11-20 11:09:47,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:09:47,759 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:09:47,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:47,759 INFO L85 PathProgramCache]: Analyzing trace with hash -678215400, now seen corresponding path program 26 times [2022-11-20 11:09:47,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:09:47,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1411323749] [2022-11-20 11:09:47,760 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:09:47,760 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:09:47,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:09:47,761 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:09:47,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-20 11:09:48,018 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:09:48,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:09:48,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-20 11:09:48,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:48,127 INFO L321 Elim1Store]: treesize reduction 118, result has 24.4 percent of original size [2022-11-20 11:09:48,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 38 treesize of output 65 [2022-11-20 11:09:48,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:48,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:09:48,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:09:48,314 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-20 11:09:48,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 27 [2022-11-20 11:09:48,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:49,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:49,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:49,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:49,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:50,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:50,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:50,718 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:09:50,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:09:54,376 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 11 refuted. 10 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:09:54,376 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:09:54,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1411323749] [2022-11-20 11:09:54,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1411323749] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:09:54,376 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:09:54,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2022-11-20 11:09:54,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782238964] [2022-11-20 11:09:54,377 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:09:54,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 11:09:54,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:09:54,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 11:09:54,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=376, Unknown=17, NotChecked=0, Total=462 [2022-11-20 11:09:54,378 INFO L87 Difference]: Start difference. First operand 73 states and 104 transitions. Second operand has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 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) [2022-11-20 11:09:54,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:54,901 INFO L93 Difference]: Finished difference Result 85 states and 117 transitions. [2022-11-20 11:09:54,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:09:54,902 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 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 18 [2022-11-20 11:09:54,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:54,903 INFO L225 Difference]: With dead ends: 85 [2022-11-20 11:09:54,903 INFO L226 Difference]: Without dead ends: 85 [2022-11-20 11:09:54,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=76, Invalid=411, Unknown=19, NotChecked=0, Total=506 [2022-11-20 11:09:54,904 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:54,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 76 Unchecked, 0.1s Time] [2022-11-20 11:09:54,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-20 11:09:54,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 73. [2022-11-20 11:09:54,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 70 states have (on average 1.4857142857142858) internal successors, (104), 72 states have internal predecessors, (104), 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) [2022-11-20 11:09:54,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 104 transitions. [2022-11-20 11:09:54,906 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 104 transitions. Word has length 18 [2022-11-20 11:09:54,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:54,907 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 104 transitions. [2022-11-20 11:09:54,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 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) [2022-11-20 11:09:54,907 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 104 transitions. [2022-11-20 11:09:54,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 11:09:54,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:54,907 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:54,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2022-11-20 11:09:55,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:09:55,116 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:09:55,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:55,116 INFO L85 PathProgramCache]: Analyzing trace with hash 723717410, now seen corresponding path program 27 times [2022-11-20 11:09:55,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:09:55,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [178416369] [2022-11-20 11:09:55,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:09:55,117 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:09:55,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:09:55,118 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:09:55,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-20 11:09:55,397 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-20 11:09:55,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:09:55,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-20 11:09:55,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:55,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:09:55,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:09:55,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:09:55,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-20 11:09:55,535 INFO L321 Elim1Store]: treesize reduction 118, result has 24.4 percent of original size [2022-11-20 11:09:55,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 38 treesize of output 65 [2022-11-20 11:09:55,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:55,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:09:55,787 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-20 11:09:55,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 27 [2022-11-20 11:09:55,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 11:09:55,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:56,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:56,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:57,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:57,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:57,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:57,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:09:58,206 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:09:58,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:10:00,664 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 6 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:10:00,664 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:10:00,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [178416369] [2022-11-20 11:10:00,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [178416369] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:10:00,664 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:10:00,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2022-11-20 11:10:00,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593523144] [2022-11-20 11:10:00,664 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:10:00,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 11:10:00,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:10:00,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 11:10:00,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=387, Unknown=6, NotChecked=0, Total=462 [2022-11-20 11:10:00,665 INFO L87 Difference]: Start difference. First operand 73 states and 104 transitions. Second operand has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 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) [2022-11-20 11:10:04,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:04,618 INFO L93 Difference]: Finished difference Result 98 states and 132 transitions. [2022-11-20 11:10:04,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 11:10:04,619 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 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 18 [2022-11-20 11:10:04,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:04,619 INFO L225 Difference]: With dead ends: 98 [2022-11-20 11:10:04,619 INFO L226 Difference]: Without dead ends: 98 [2022-11-20 11:10:04,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=120, Invalid=655, Unknown=37, NotChecked=0, Total=812 [2022-11-20 11:10:04,620 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 221 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:04,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 0 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 221 Unchecked, 0.1s Time] [2022-11-20 11:10:04,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-20 11:10:04,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 80. [2022-11-20 11:10:04,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 77 states have (on average 1.4285714285714286) internal successors, (110), 79 states have internal predecessors, (110), 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) [2022-11-20 11:10:04,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 110 transitions. [2022-11-20 11:10:04,622 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 110 transitions. Word has length 18 [2022-11-20 11:10:04,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:04,623 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 110 transitions. [2022-11-20 11:10:04,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 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) [2022-11-20 11:10:04,623 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 110 transitions. [2022-11-20 11:10:04,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 11:10:04,624 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:04,624 INFO L195 NwaCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:04,634 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Ended with exit code 0 [2022-11-20 11:10:04,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:10:04,831 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:10:04,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:04,831 INFO L85 PathProgramCache]: Analyzing trace with hash 723710213, now seen corresponding path program 5 times [2022-11-20 11:10:04,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:10:04,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1009329275] [2022-11-20 11:10:04,831 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 11:10:04,832 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:10:04,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:10:04,833 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:10:04,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-20 11:10:05,135 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-11-20 11:10:05,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:10:05,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-20 11:10:05,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:05,234 INFO L321 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2022-11-20 11:10:05,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 42 [2022-11-20 11:10:05,265 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 11:10:05,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-20 11:10:05,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:10:05,409 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 11:10:05,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-20 11:10:05,429 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:10:05,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-20 11:10:05,604 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 11:10:05,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 21 [2022-11-20 11:10:06,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2022-11-20 11:10:06,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2022-11-20 11:10:06,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2022-11-20 11:10:06,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2022-11-20 11:10:06,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2022-11-20 11:10:06,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:10:07,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:10:07,355 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:10:07,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 10 [2022-11-20 11:10:07,362 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:10:07,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:10:14,654 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:10:14,654 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:10:14,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1009329275] [2022-11-20 11:10:14,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1009329275] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:10:14,654 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:10:14,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2022-11-20 11:10:14,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139806777] [2022-11-20 11:10:14,655 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:10:14,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 11:10:14,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:10:14,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 11:10:14,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=510, Unknown=2, NotChecked=0, Total=600 [2022-11-20 11:10:14,656 INFO L87 Difference]: Start difference. First operand 80 states and 110 transitions. Second operand has 25 states, 25 states have (on average 1.44) internal successors, (36), 24 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) [2022-11-20 11:10:16,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:16,363 INFO L93 Difference]: Finished difference Result 89 states and 115 transitions. [2022-11-20 11:10:16,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:10:16,367 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 24 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 18 [2022-11-20 11:10:16,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:16,368 INFO L225 Difference]: With dead ends: 89 [2022-11-20 11:10:16,368 INFO L226 Difference]: Without dead ends: 89 [2022-11-20 11:10:16,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=124, Invalid=744, Unknown=2, NotChecked=0, Total=870 [2022-11-20 11:10:16,369 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 365 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:16,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 365 Unchecked, 0.2s Time] [2022-11-20 11:10:16,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-20 11:10:16,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 62. [2022-11-20 11:10:16,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 59 states have (on average 1.4406779661016949) internal successors, (85), 61 states have internal predecessors, (85), 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) [2022-11-20 11:10:16,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 85 transitions. [2022-11-20 11:10:16,372 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 85 transitions. Word has length 18 [2022-11-20 11:10:16,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:16,372 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 85 transitions. [2022-11-20 11:10:16,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 24 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) [2022-11-20 11:10:16,372 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 85 transitions. [2022-11-20 11:10:16,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 11:10:16,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:16,373 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:16,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2022-11-20 11:10:16,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:10:16,587 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:10:16,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:16,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1980607110, now seen corresponding path program 28 times [2022-11-20 11:10:16,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:10:16,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [541877153] [2022-11-20 11:10:16,588 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:10:16,588 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:10:16,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:10:16,589 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:10:16,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-20 11:10:16,843 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 11:10:16,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:10:16,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-20 11:10:16,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:16,904 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-20 11:10:16,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 45 [2022-11-20 11:10:16,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:10:16,996 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-20 11:10:16,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-20 11:10:17,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:10:17,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:10:17,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:10:17,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:10:17,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:10:17,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:10:17,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:10:17,375 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:10:17,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:10:17,425 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1431 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_1431) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv1 32)))) (_ bv0 8)))) is different from false [2022-11-20 11:10:17,436 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1431 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_1431) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv2 32)))) (_ bv0 8)))) is different from false [2022-11-20 11:10:17,601 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1431 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_1431) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv5 32)))) (_ bv0 8)))) is different from false [2022-11-20 11:10:17,612 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1431 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_1431) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv6 32)))) (_ bv0 8)))) is different from false [2022-11-20 11:10:17,951 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 18 not checked. [2022-11-20 11:10:17,951 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:10:17,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [541877153] [2022-11-20 11:10:17,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [541877153] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:10:17,951 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:10:17,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2022-11-20 11:10:17,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091324258] [2022-11-20 11:10:17,951 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:10:17,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 11:10:17,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:10:17,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 11:10:17,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=249, Unknown=24, NotChecked=140, Total=462 [2022-11-20 11:10:17,952 INFO L87 Difference]: Start difference. First operand 62 states and 85 transitions. Second operand has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 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) [2022-11-20 11:10:18,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:18,756 INFO L93 Difference]: Finished difference Result 65 states and 87 transitions. [2022-11-20 11:10:18,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:10:18,757 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 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 18 [2022-11-20 11:10:18,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:18,757 INFO L225 Difference]: With dead ends: 65 [2022-11-20 11:10:18,757 INFO L226 Difference]: Without dead ends: 65 [2022-11-20 11:10:18,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=94, Invalid=450, Unknown=24, NotChecked=188, Total=756 [2022-11-20 11:10:18,758 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 187 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:18,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 178 Invalid, 0 Unknown, 187 Unchecked, 0.4s Time] [2022-11-20 11:10:18,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-20 11:10:18,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 51. [2022-11-20 11:10:18,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 48 states have (on average 1.4375) internal successors, (69), 50 states have internal predecessors, (69), 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) [2022-11-20 11:10:18,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 69 transitions. [2022-11-20 11:10:18,770 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 69 transitions. Word has length 18 [2022-11-20 11:10:18,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:18,770 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 69 transitions. [2022-11-20 11:10:18,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 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) [2022-11-20 11:10:18,770 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 69 transitions. [2022-11-20 11:10:18,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 11:10:18,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:18,771 INFO L195 NwaCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:18,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2022-11-20 11:10:18,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:10:18,971 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:10:18,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:18,972 INFO L85 PathProgramCache]: Analyzing trace with hash 380162059, now seen corresponding path program 6 times [2022-11-20 11:10:18,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:10:18,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1160778988] [2022-11-20 11:10:18,972 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 11:10:18,972 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:10:18,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:10:18,973 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:10:18,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-11-20 11:10:19,249 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-20 11:10:19,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:10:19,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-20 11:10:19,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:19,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:19,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:19,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:10:19,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-20 11:10:19,319 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-20 11:10:19,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 45 [2022-11-20 11:10:19,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:10:19,425 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 11:10:19,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 11:10:19,454 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-20 11:10:19,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-20 11:10:19,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:10:19,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:10:19,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:10:19,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:10:19,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:10:19,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:10:19,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:10:19,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-20 11:10:19,858 INFO L321 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2022-11-20 11:10:19,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 16 [2022-11-20 11:10:19,939 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-20 11:10:19,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:10:20,359 WARN L837 $PredicateComparison]: unable to prove that (forall ((|thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| (_ BitVec 32)) (v_ArrVal_1473 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| |thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1|)) (.cse0 (select |c_#length| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|))) (or (bvult (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv1 32) |thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1|) .cse0) (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_1473) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) .cse1)) (_ bv0 8)) (not (bvult .cse1 .cse0))))) is different from false [2022-11-20 11:10:22,833 WARN L837 $PredicateComparison]: unable to prove that (forall ((|thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| (_ BitVec 32)) (v_ArrVal_1473 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1466 (Array (_ BitVec 32) (_ BitVec 32))) (v_~v~0.base_114 (_ BitVec 32))) (let ((.cse0 (select (store |c_#length| v_~v~0.base_114 (_ bv8 32)) (_ bv3 32)))) (or (bvult (bvadd (_ bv1 32) |thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1|) .cse0) (= ((_ extract 7 0) (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1466) v_~v~0.base_114 v_ArrVal_1473) (_ bv3 32)) |thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1|)) (_ bv0 8)) (not (bvult |thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| .cse0)) (not (= (select |c_#valid| v_~v~0.base_114) (_ bv0 1)))))) is different from false [2022-11-20 11:10:22,883 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 14 not checked. [2022-11-20 11:10:22,883 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:10:22,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1160778988] [2022-11-20 11:10:22,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1160778988] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:10:22,883 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:10:22,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2022-11-20 11:10:22,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487581690] [2022-11-20 11:10:22,884 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:10:22,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 11:10:22,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:10:22,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 11:10:22,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=104, Unknown=3, NotChecked=42, Total=182 [2022-11-20 11:10:22,885 INFO L87 Difference]: Start difference. First operand 51 states and 69 transitions. Second operand has 14 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 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) [2022-11-20 11:10:23,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:23,547 INFO L93 Difference]: Finished difference Result 57 states and 71 transitions. [2022-11-20 11:10:23,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:10:23,548 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 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 18 [2022-11-20 11:10:23,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:23,549 INFO L225 Difference]: With dead ends: 57 [2022-11-20 11:10:23,549 INFO L226 Difference]: Without dead ends: 57 [2022-11-20 11:10:23,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=54, Invalid=161, Unknown=3, NotChecked=54, Total=272 [2022-11-20 11:10:23,550 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:23,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 67 Unchecked, 0.1s Time] [2022-11-20 11:10:23,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-20 11:10:23,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2022-11-20 11:10:23,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 48 states have (on average 1.3333333333333333) internal successors, (64), 49 states have internal predecessors, (64), 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) [2022-11-20 11:10:23,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2022-11-20 11:10:23,552 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 18 [2022-11-20 11:10:23,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:23,552 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2022-11-20 11:10:23,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 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) [2022-11-20 11:10:23,553 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2022-11-20 11:10:23,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 11:10:23,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:23,553 INFO L195 NwaCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:23,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2022-11-20 11:10:23,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:10:23,766 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:10:23,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:23,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1795466219, now seen corresponding path program 29 times [2022-11-20 11:10:23,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:10:23,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [124221517] [2022-11-20 11:10:23,767 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 11:10:23,767 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:10:23,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:10:23,768 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:10:23,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2022-11-20 11:10:24,046 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-11-20 11:10:24,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-11-20 11:10:24,046 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:10:24,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:10:24,352 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-20 11:10:24,357 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 11:10:24,358 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK (25 of 26 remaining) [2022-11-20 11:10:24,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE (24 of 26 remaining) [2022-11-20 11:10:24,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE (23 of 26 remaining) [2022-11-20 11:10:24,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (22 of 26 remaining) [2022-11-20 11:10:24,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE (21 of 26 remaining) [2022-11-20 11:10:24,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 26 remaining) [2022-11-20 11:10:24,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 26 remaining) [2022-11-20 11:10:24,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 26 remaining) [2022-11-20 11:10:24,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 26 remaining) [2022-11-20 11:10:24,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 26 remaining) [2022-11-20 11:10:24,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 26 remaining) [2022-11-20 11:10:24,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 26 remaining) [2022-11-20 11:10:24,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 26 remaining) [2022-11-20 11:10:24,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 26 remaining) [2022-11-20 11:10:24,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 26 remaining) [2022-11-20 11:10:24,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 26 remaining) [2022-11-20 11:10:24,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 26 remaining) [2022-11-20 11:10:24,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (8 of 26 remaining) [2022-11-20 11:10:24,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 26 remaining) [2022-11-20 11:10:24,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 26 remaining) [2022-11-20 11:10:24,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE (5 of 26 remaining) [2022-11-20 11:10:24,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE (4 of 26 remaining) [2022-11-20 11:10:24,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (3 of 26 remaining) [2022-11-20 11:10:24,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE (2 of 26 remaining) [2022-11-20 11:10:24,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 26 remaining) [2022-11-20 11:10:24,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 26 remaining) [2022-11-20 11:10:24,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2022-11-20 11:10:24,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:10:24,579 INFO L444 BasicCegarLoop]: Path program histogram: [29, 6, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:24,583 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 11:10:24,583 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:10:24,595 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:10:24,596 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:10:24,597 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:10:24,597 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:10:24,597 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:10:24,597 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:10:24,598 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:10:24,598 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:10:24,598 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:10:24,598 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:10:24,599 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:10:24,599 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:10:24,599 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:10:24,599 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:10:24,600 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:10:24,600 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:10:24,600 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:10:24,600 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:10:24,601 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:10:24,601 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:10:24,601 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:10:24,601 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:10:24,602 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:10:24,602 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:10:24,602 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:10:24,602 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:10:24,603 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:10:24,603 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:10:24,603 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:10:24,603 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:10:24,604 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:10:24,604 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:10:24,604 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:10:24,604 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled [2022-11-20 11:10:24,605 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled [2022-11-20 11:10:24,605 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:10:24,605 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:10:24,605 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:10:24,606 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:10:24,606 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled [2022-11-20 11:10:24,606 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled [2022-11-20 11:10:24,606 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:10:24,607 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:10:24,607 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:10:24,607 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:10:24,607 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled [2022-11-20 11:10:24,607 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled [2022-11-20 11:10:24,608 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:10:24,608 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-20 11:10:24,608 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-20 11:10:24,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:10:24 BasicIcfg [2022-11-20 11:10:24,641 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:10:24,642 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:10:24,642 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:10:24,642 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:10:24,643 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:07:12" (3/4) ... [2022-11-20 11:10:24,645 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 11:10:24,645 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:10:24,646 INFO L158 Benchmark]: Toolchain (without parser) took 193961.86ms. Allocated memory was 77.6MB in the beginning and 132.1MB in the end (delta: 54.5MB). Free memory was 52.8MB in the beginning and 37.5MB in the end (delta: 15.3MB). Peak memory consumption was 69.6MB. Max. memory is 16.1GB. [2022-11-20 11:10:24,646 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 77.6MB. Free memory is still 54.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:10:24,646 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1011.41ms. Allocated memory is still 77.6MB. Free memory was 52.8MB in the beginning and 39.5MB in the end (delta: 13.3MB). Peak memory consumption was 25.0MB. Max. memory is 16.1GB. [2022-11-20 11:10:24,647 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.84ms. Allocated memory is still 77.6MB. Free memory was 39.5MB in the beginning and 36.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:10:24,647 INFO L158 Benchmark]: Boogie Preprocessor took 33.39ms. Allocated memory is still 77.6MB. Free memory was 36.9MB in the beginning and 35.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:10:24,649 INFO L158 Benchmark]: RCFGBuilder took 759.00ms. Allocated memory was 77.6MB in the beginning and 109.1MB in the end (delta: 31.5MB). Free memory was 35.0MB in the beginning and 70.9MB in the end (delta: -35.9MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2022-11-20 11:10:24,649 INFO L158 Benchmark]: TraceAbstraction took 192087.91ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 70.4MB in the beginning and 37.5MB in the end (delta: 32.8MB). Peak memory consumption was 54.9MB. Max. memory is 16.1GB. [2022-11-20 11:10:24,649 INFO L158 Benchmark]: Witness Printer took 3.66ms. Allocated memory is still 132.1MB. Free memory is still 37.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:10:24,650 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 77.6MB. Free memory is still 54.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1011.41ms. Allocated memory is still 77.6MB. Free memory was 52.8MB in the beginning and 39.5MB in the end (delta: 13.3MB). Peak memory consumption was 25.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.84ms. Allocated memory is still 77.6MB. Free memory was 39.5MB in the beginning and 36.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.39ms. Allocated memory is still 77.6MB. Free memory was 36.9MB in the beginning and 35.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 759.00ms. Allocated memory was 77.6MB in the beginning and 109.1MB in the end (delta: 31.5MB). Free memory was 35.0MB in the beginning and 70.9MB in the end (delta: -35.9MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. * TraceAbstraction took 192087.91ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 70.4MB in the beginning and 37.5MB in the end (delta: 32.8MB). Peak memory consumption was 54.9MB. Max. memory is 16.1GB. * Witness Printer took 3.66ms. Allocated memory is still 132.1MB. Free memory is still 37.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 13.8s, 118 PlacesBefore, 39 PlacesAfterwards, 115 TransitionsBefore, 34 TransitionsAfterwards, 360 CoEnabledTransitionPairs, 6 FixpointIterations, 75 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 129 TotalNumberOfCompositions, 461 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 401, independent: 386, independent conditional: 0, independent unconditional: 386, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 241, independent: 230, independent conditional: 0, independent unconditional: 230, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 241, independent: 229, independent conditional: 0, independent unconditional: 229, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 12, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 185, independent: 18, independent conditional: 0, independent unconditional: 18, dependent: 166, dependent conditional: 0, dependent unconditional: 166, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 401, independent: 156, independent conditional: 0, independent unconditional: 156, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 241, unknown conditional: 0, unknown unconditional: 241] , Statistics on independence cache: Total cache size (in pairs): 13, Positive cache size: 11, Positive conditional cache size: 0, Positive unconditional cache size: 11, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, 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 - UnprovableResult [Line: 1119]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1107. Possible FailurePath: [L1108] 0 char *v; [L1121] 0 pthread_t t1, t2; [L1122] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, pthread_create(&t1, 0, thread1, 0)=524415, t1={7:0}, t2={14:0}, v={0:0}] [L1111] 1 v = malloc(sizeof(char) * 8) [L1112] 1 return 0; [L1123] 0 \read(t1) VAL [\read(t1)=524415, \result={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={14:0}, v={4:0}] [L1123] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\read(t1)=524415, \result={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={14:0}, v={4:0}] [L1124] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, pthread_create(&t2, 0, thread2, 0)=524416, t1={7:0}, t2={14:0}, v={4:0}] [L1125] 0 \read(t2) VAL [\read(t2)=524416, \result={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={14:0}, v={4:0}] [L1116] COND TRUE 2 \read(*v) [L1116] FCALL 2 strcpy(v, "Bigshot") [L1117] 2 return 0; [L1125] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\read(t2)=524416, \result={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={14:0}, v={4:0}] [L1126] EXPR 0 v[0] [L1126] CALL 0 __VERIFIER_assert(v[0] == 'B') [L1107] COND FALSE 0 !(!expression) [L1126] RET 0 __VERIFIER_assert(v[0] == 'B') [L1127] 0 return 0; [L1127] 0 return 0; [L1127] 0 return 0; - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1107]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1124]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1122]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 149 locations, 26 error locations. Started 1 CEGAR loops. OverallTime: 191.9s, OverallIterations: 57, TraceHistogramMax: 8, PathProgramHistogramMax: 29, EmptinessCheckTime: 0.0s, AutomataDifference: 30.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 13.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 910 SdHoareTripleChecker+Valid, 9.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 910 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 8.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 4915 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 155 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3341 IncrementalHoareTripleChecker+Invalid, 8411 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 155 mSolverCounterUnsat, 4 mSDtfsCounter, 3341 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1414 GetRequests, 625 SyntacticMatches, 9 SemanticMatches, 780 ConstructedPredicates, 28 IntricatePredicates, 4 DeprecatedPredicates, 1667 ImplicationChecksByTransitivity, 107.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=41, InterpolantAutomatonStates: 559, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 56 MinimizatonAttempts, 518 StatesRemovedByMinimization, 43 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 5.9s SatisfiabilityAnalysisTime, 124.2s InterpolantComputationTime, 761 NumberOfCodeBlocks, 757 NumberOfCodeBlocksAsserted, 112 NumberOfCheckSat, 1258 ConstructedInterpolants, 756 QuantifiedInterpolants, 34077 SizeOfPredicates, 396 NumberOfNonLiveVariables, 7393 ConjunctsInSsa, 1276 ConjunctsInUnsatCore, 96 InterpolantComputations, 16 PerfectInterpolantSequences, 100/1030 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-20 11:10:24,677 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13e2e671-bd07-46d5-83aa-3a6a5f8e90c8/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample