./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/bigshot_s.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/bigshot_s.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a --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 4d8c741fd238f074816319de9a9bd5d97cd9b35eb7f53a276be973ea0c31ecbe --- 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-b5237d8 [2022-11-21 13:55:28,655 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:55:28,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:55:28,684 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:55:28,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:55:28,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:55:28,687 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:55:28,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:55:28,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:55:28,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:55:28,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:55:28,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:55:28,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:55:28,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:55:28,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:55:28,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:55:28,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:55:28,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:55:28,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:55:28,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:55:28,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:55:28,725 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:55:28,726 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:55:28,727 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:55:28,731 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:55:28,732 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:55:28,732 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:55:28,733 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:55:28,733 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:55:28,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:55:28,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:55:28,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:55:28,747 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:55:28,749 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:55:28,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:55:28,750 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:55:28,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:55:28,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:55:28,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:55:28,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:55:28,763 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:55:28,763 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-21 13:55:28,799 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:55:28,799 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:55:28,800 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:55:28,800 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:55:28,800 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 13:55:28,801 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 13:55:28,801 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:55:28,802 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:55:28,802 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:55:28,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:55:28,802 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 13:55:28,803 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 13:55:28,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 13:55:28,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 13:55:28,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:55:28,804 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-21 13:55:28,804 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-21 13:55:28,804 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-21 13:55:28,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 13:55:28,804 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 13:55:28,805 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 13:55:28,805 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:55:28,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:55:28,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:55:28,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 13:55:28,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:55:28,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:55:28,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 13:55:28,806 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 13:55:28,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 13:55:28,807 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_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d8c741fd238f074816319de9a9bd5d97cd9b35eb7f53a276be973ea0c31ecbe [2022-11-21 13:55:29,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:55:29,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:55:29,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:55:29,105 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:55:29,106 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:55:29,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/pthread/bigshot_s.i [2022-11-21 13:55:32,319 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:55:32,637 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:55:32,638 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/sv-benchmarks/c/pthread/bigshot_s.i [2022-11-21 13:55:32,667 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/data/3a4e2e1b3/3ed3c058e3a048a1963a1d093bac4da3/FLAG17642a0e4 [2022-11-21 13:55:32,682 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/data/3a4e2e1b3/3ed3c058e3a048a1963a1d093bac4da3 [2022-11-21 13:55:32,685 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:55:32,687 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:55:32,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:55:32,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:55:32,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:55:32,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:55:32" (1/1) ... [2022-11-21 13:55:32,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f698c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:32, skipping insertion in model container [2022-11-21 13:55:32,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:55:32" (1/1) ... [2022-11-21 13:55:32,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:55:32,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:55:33,221 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_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/sv-benchmarks/c/pthread/bigshot_s.i[55202,55215] [2022-11-21 13:55:33,237 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:55:33,248 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 13:55:33,282 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_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/sv-benchmarks/c/pthread/bigshot_s.i[55202,55215] [2022-11-21 13:55:33,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:55:33,425 INFO L208 MainTranslator]: Completed translation [2022-11-21 13:55:33,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:33 WrapperNode [2022-11-21 13:55:33,427 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:55:33,429 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 13:55:33,429 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 13:55:33,430 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 13:55:33,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:33" (1/1) ... [2022-11-21 13:55:33,476 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:33" (1/1) ... [2022-11-21 13:55:33,513 INFO L138 Inliner]: procedures = 323, calls = 33, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 79 [2022-11-21 13:55:33,514 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 13:55:33,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 13:55:33,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 13:55:33,515 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 13:55:33,525 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:33" (1/1) ... [2022-11-21 13:55:33,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:33" (1/1) ... [2022-11-21 13:55:33,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:33" (1/1) ... [2022-11-21 13:55:33,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:33" (1/1) ... [2022-11-21 13:55:33,546 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:33" (1/1) ... [2022-11-21 13:55:33,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:33" (1/1) ... [2022-11-21 13:55:33,570 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:33" (1/1) ... [2022-11-21 13:55:33,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:33" (1/1) ... [2022-11-21 13:55:33,574 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 13:55:33,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 13:55:33,575 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 13:55:33,575 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 13:55:33,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:33" (1/1) ... [2022-11-21 13:55:33,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:55:33,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:55:33,620 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 13:55:33,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 13:55:33,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 13:55:33,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 13:55:33,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-21 13:55:33,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 13:55:33,666 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 13:55:33,667 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 13:55:33,667 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 13:55:33,667 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 13:55:33,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 13:55:33,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 13:55:33,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 13:55:33,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 13:55:33,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 13:55:33,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 13:55:33,670 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 13:55:33,862 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 13:55:33,864 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 13:55:34,210 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 13:55:34,218 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 13:55:34,218 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 13:55:34,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:55:34 BoogieIcfgContainer [2022-11-21 13:55:34,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 13:55:34,223 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 13:55:34,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 13:55:34,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 13:55:34,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:55:32" (1/3) ... [2022-11-21 13:55:34,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5970c381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:55:34, skipping insertion in model container [2022-11-21 13:55:34,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:55:33" (2/3) ... [2022-11-21 13:55:34,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5970c381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:55:34, skipping insertion in model container [2022-11-21 13:55:34,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:55:34" (3/3) ... [2022-11-21 13:55:34,229 INFO L112 eAbstractionObserver]: Analyzing ICFG bigshot_s.i [2022-11-21 13:55:34,255 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 13:55:34,255 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-21 13:55:34,255 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 13:55:34,384 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-21 13:55:34,437 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-21 13:55:34,458 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 119 transitions, 254 flow [2022-11-21 13:55:34,463 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 119 transitions, 254 flow [2022-11-21 13:55:34,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 119 transitions, 254 flow [2022-11-21 13:55:34,554 INFO L130 PetriNetUnfolder]: 5/117 cut-off events. [2022-11-21 13:55:34,554 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 13:55:34,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 117 events. 5/117 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 151 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 77. Up to 2 conditions per place. [2022-11-21 13:55:34,565 INFO L119 LiptonReduction]: Number of co-enabled transitions 360 [2022-11-21 13:55:40,744 INFO L134 LiptonReduction]: Checked pairs total: 485 [2022-11-21 13:55:40,744 INFO L136 LiptonReduction]: Total number of compositions: 134 [2022-11-21 13:55:40,751 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 34 transitions, 84 flow [2022-11-21 13:55:40,766 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) [2022-11-21 13:55:40,783 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:55:40,789 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;@5aa7e5dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:55:40,789 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-11-21 13:55:40,791 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) [2022-11-21 13:55:40,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-21 13:55:40,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:55:40,796 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-21 13:55:40,797 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:55:40,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:55:40,802 INFO L85 PathProgramCache]: Analyzing trace with hash 461, now seen corresponding path program 1 times [2022-11-21 13:55:40,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:55:40,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199299454] [2022-11-21 13:55:40,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:40,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:55:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:40,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:40,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:55:40,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199299454] [2022-11-21 13:55:40,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199299454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:55:40,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:55:40,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-21 13:55:40,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573085063] [2022-11-21 13:55:40,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:55:40,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 13:55:40,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:55:40,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 13:55:40,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 13:55:40,963 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) [2022-11-21 13:55:41,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:55:41,027 INFO L93 Difference]: Finished difference Result 47 states and 75 transitions. [2022-11-21 13:55:41,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 13:55:41,029 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 [2022-11-21 13:55:41,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:55:41,037 INFO L225 Difference]: With dead ends: 47 [2022-11-21 13:55:41,038 INFO L226 Difference]: Without dead ends: 47 [2022-11-21 13:55:41,039 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 [2022-11-21 13:55:41,043 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:55:41,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:55:41,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-21 13:55:41,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-11-21 13:55:41,078 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) [2022-11-21 13:55:41,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 75 transitions. [2022-11-21 13:55:41,082 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 75 transitions. Word has length 1 [2022-11-21 13:55:41,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:55:41,083 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 75 transitions. [2022-11-21 13:55:41,087 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) [2022-11-21 13:55:41,088 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 75 transitions. [2022-11-21 13:55:41,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-21 13:55:41,089 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:55:41,089 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-21 13:55:41,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 13:55:41,089 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:55:41,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:55:41,091 INFO L85 PathProgramCache]: Analyzing trace with hash 454524, now seen corresponding path program 1 times [2022-11-21 13:55:41,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:55:41,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266044657] [2022-11-21 13:55:41,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:41,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:55:41,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:41,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:41,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:55:41,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266044657] [2022-11-21 13:55:41,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266044657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:55:41,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:55:41,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 13:55:41,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548047200] [2022-11-21 13:55:41,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:55:41,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:55:41,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:55:41,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:55:41,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:55:41,365 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) [2022-11-21 13:55:41,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:55:41,422 INFO L93 Difference]: Finished difference Result 45 states and 72 transitions. [2022-11-21 13:55:41,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:55:41,423 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 [2022-11-21 13:55:41,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:55:41,425 INFO L225 Difference]: With dead ends: 45 [2022-11-21 13:55:41,425 INFO L226 Difference]: Without dead ends: 45 [2022-11-21 13:55:41,426 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 [2022-11-21 13:55:41,427 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:55:41,427 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] [2022-11-21 13:55:41,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-21 13:55:41,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-11-21 13:55:41,432 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) [2022-11-21 13:55:41,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 72 transitions. [2022-11-21 13:55:41,433 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 72 transitions. Word has length 3 [2022-11-21 13:55:41,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:55:41,433 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 72 transitions. [2022-11-21 13:55:41,433 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) [2022-11-21 13:55:41,433 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 72 transitions. [2022-11-21 13:55:41,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-21 13:55:41,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:55:41,434 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-21 13:55:41,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 13:55:41,437 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:55:41,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:55:41,438 INFO L85 PathProgramCache]: Analyzing trace with hash 454525, now seen corresponding path program 1 times [2022-11-21 13:55:41,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:55:41,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17281280] [2022-11-21 13:55:41,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:41,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:55:41,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:41,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:41,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:55:41,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17281280] [2022-11-21 13:55:41,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17281280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:55:41,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:55:41,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 13:55:41,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848007111] [2022-11-21 13:55:41,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:55:41,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:55:41,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:55:41,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:55:41,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:55:41,546 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) [2022-11-21 13:55:41,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:55:41,652 INFO L93 Difference]: Finished difference Result 81 states and 133 transitions. [2022-11-21 13:55:41,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:55:41,652 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 [2022-11-21 13:55:41,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:55:41,657 INFO L225 Difference]: With dead ends: 81 [2022-11-21 13:55:41,657 INFO L226 Difference]: Without dead ends: 81 [2022-11-21 13:55:41,659 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 [2022-11-21 13:55:41,661 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 21 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:55:41,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 3 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:55:41,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-21 13:55:41,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 44. [2022-11-21 13:55:41,674 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) [2022-11-21 13:55:41,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 70 transitions. [2022-11-21 13:55:41,675 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 70 transitions. Word has length 3 [2022-11-21 13:55:41,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:55:41,675 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 70 transitions. [2022-11-21 13:55:41,675 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) [2022-11-21 13:55:41,675 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 70 transitions. [2022-11-21 13:55:41,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-21 13:55:41,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:55:41,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-21 13:55:41,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 13:55:41,679 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:55:41,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:55:41,680 INFO L85 PathProgramCache]: Analyzing trace with hash 14091797, now seen corresponding path program 1 times [2022-11-21 13:55:41,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:55:41,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922889925] [2022-11-21 13:55:41,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:41,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:55:41,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:41,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:41,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:55:41,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922889925] [2022-11-21 13:55:41,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922889925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:55:41,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:55:41,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 13:55:41,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592899737] [2022-11-21 13:55:41,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:55:41,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:55:41,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:55:41,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:55:41,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:55:41,852 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) [2022-11-21 13:55:41,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:55:41,911 INFO L93 Difference]: Finished difference Result 43 states and 69 transitions. [2022-11-21 13:55:41,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:55:41,911 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 [2022-11-21 13:55:41,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:55:41,912 INFO L225 Difference]: With dead ends: 43 [2022-11-21 13:55:41,912 INFO L226 Difference]: Without dead ends: 43 [2022-11-21 13:55:41,913 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 [2022-11-21 13:55:41,913 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 43 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:55:41,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:55:41,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-21 13:55:41,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-11-21 13:55:41,923 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) [2022-11-21 13:55:41,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 69 transitions. [2022-11-21 13:55:41,925 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 69 transitions. Word has length 4 [2022-11-21 13:55:41,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:55:41,926 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 69 transitions. [2022-11-21 13:55:41,927 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) [2022-11-21 13:55:41,927 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 69 transitions. [2022-11-21 13:55:41,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 13:55:41,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:55:41,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-21 13:55:41,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 13:55:41,929 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:55:41,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:55:41,930 INFO L85 PathProgramCache]: Analyzing trace with hash 656198352, now seen corresponding path program 1 times [2022-11-21 13:55:41,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:55:41,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078090289] [2022-11-21 13:55:41,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:41,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:55:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:42,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:42,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:55:42,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078090289] [2022-11-21 13:55:42,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078090289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:55:42,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:55:42,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 13:55:42,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068028420] [2022-11-21 13:55:42,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:55:42,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:55:42,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:55:42,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:55:42,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:55:42,109 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) [2022-11-21 13:55:42,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:55:42,149 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2022-11-21 13:55:42,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:55:42,149 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 [2022-11-21 13:55:42,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:55:42,150 INFO L225 Difference]: With dead ends: 35 [2022-11-21 13:55:42,150 INFO L226 Difference]: Without dead ends: 35 [2022-11-21 13:55:42,151 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 [2022-11-21 13:55:42,152 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 37 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:55:42,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 1 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:55:42,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-21 13:55:42,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-11-21 13:55:42,155 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) [2022-11-21 13:55:42,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 53 transitions. [2022-11-21 13:55:42,156 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 53 transitions. Word has length 6 [2022-11-21 13:55:42,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:55:42,157 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 53 transitions. [2022-11-21 13:55:42,157 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) [2022-11-21 13:55:42,157 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 53 transitions. [2022-11-21 13:55:42,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 13:55:42,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:55:42,158 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-21 13:55:42,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 13:55:42,158 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:55:42,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:55:42,159 INFO L85 PathProgramCache]: Analyzing trace with hash 656198354, now seen corresponding path program 1 times [2022-11-21 13:55:42,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:55:42,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107884916] [2022-11-21 13:55:42,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:42,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:55:42,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:42,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:42,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:55:42,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107884916] [2022-11-21 13:55:42,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107884916] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:55:42,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:55:42,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 13:55:42,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234994036] [2022-11-21 13:55:42,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:55:42,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:55:42,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:55:42,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:55:42,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:55:42,228 INFO L87 Difference]: Start difference. First operand 35 states and 53 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) [2022-11-21 13:55:42,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:55:42,270 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2022-11-21 13:55:42,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:55:42,270 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 [2022-11-21 13:55:42,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:55:42,271 INFO L225 Difference]: With dead ends: 27 [2022-11-21 13:55:42,271 INFO L226 Difference]: Without dead ends: 27 [2022-11-21 13:55:42,272 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 [2022-11-21 13:55:42,272 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:55:42,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:55:42,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-21 13:55:42,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-21 13:55:42,276 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) [2022-11-21 13:55:42,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2022-11-21 13:55:42,276 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 6 [2022-11-21 13:55:42,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:55:42,277 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2022-11-21 13:55:42,277 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) [2022-11-21 13:55:42,277 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2022-11-21 13:55:42,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-21 13:55:42,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:55:42,278 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:55:42,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 13:55:42,278 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:55:42,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:55:42,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1885700721, now seen corresponding path program 1 times [2022-11-21 13:55:42,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:55:42,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886275923] [2022-11-21 13:55:42,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:42,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:55:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:42,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:42,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:55:42,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886275923] [2022-11-21 13:55:42,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886275923] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:55:42,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:55:42,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 13:55:42,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223103723] [2022-11-21 13:55:42,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:55:42,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:55:42,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:55:42,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:55:42,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:55:42,549 INFO L87 Difference]: Start difference. First operand 27 states and 37 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) [2022-11-21 13:55:42,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:55:42,644 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2022-11-21 13:55:42,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 13:55:42,645 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 [2022-11-21 13:55:42,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:55:42,645 INFO L225 Difference]: With dead ends: 31 [2022-11-21 13:55:42,646 INFO L226 Difference]: Without dead ends: 31 [2022-11-21 13:55:42,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:55:42,647 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 58 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:55:42,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 0 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:55:42,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-21 13:55:42,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2022-11-21 13:55:42,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.8888888888888888) 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) [2022-11-21 13:55:42,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2022-11-21 13:55:42,651 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 9 [2022-11-21 13:55:42,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:55:42,652 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2022-11-21 13:55:42,652 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) [2022-11-21 13:55:42,652 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2022-11-21 13:55:42,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-21 13:55:42,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:55:42,653 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:55:42,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 13:55:42,653 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:55:42,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:55:42,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1885700605, now seen corresponding path program 1 times [2022-11-21 13:55:42,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:55:42,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680507800] [2022-11-21 13:55:42,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:42,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:55:42,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:42,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:42,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:55:42,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680507800] [2022-11-21 13:55:42,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680507800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:55:42,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:55:42,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:55:42,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031441069] [2022-11-21 13:55:42,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:55:42,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:55:42,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:55:42,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:55:42,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:55:42,818 INFO L87 Difference]: Start difference. First operand 25 states and 34 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) [2022-11-21 13:55:42,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:55:42,893 INFO L93 Difference]: Finished difference Result 36 states and 49 transitions. [2022-11-21 13:55:42,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 13:55:42,895 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 [2022-11-21 13:55:42,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:55:42,896 INFO L225 Difference]: With dead ends: 36 [2022-11-21 13:55:42,896 INFO L226 Difference]: Without dead ends: 36 [2022-11-21 13:55:42,896 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 [2022-11-21 13:55:42,897 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 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 [2022-11-21 13:55:42,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:55:42,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-21 13:55:42,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 26. [2022-11-21 13:55:42,900 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) [2022-11-21 13:55:42,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 42 transitions. [2022-11-21 13:55:42,901 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 42 transitions. Word has length 9 [2022-11-21 13:55:42,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:55:42,902 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 42 transitions. [2022-11-21 13:55:42,902 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) [2022-11-21 13:55:42,902 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 42 transitions. [2022-11-21 13:55:42,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-21 13:55:42,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:55:42,903 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:55:42,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 13:55:42,903 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:55:42,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:55:42,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1885700604, now seen corresponding path program 1 times [2022-11-21 13:55:42,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:55:42,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931559191] [2022-11-21 13:55:42,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:42,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:55:42,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:42,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:42,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:55:42,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931559191] [2022-11-21 13:55:42,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931559191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:55:42,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:55:42,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:55:42,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423816656] [2022-11-21 13:55:42,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:55:42,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:55:42,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:55:42,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:55:42,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:55:42,979 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) [2022-11-21 13:55:43,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:55:43,035 INFO L93 Difference]: Finished difference Result 27 states and 40 transitions. [2022-11-21 13:55:43,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 13:55:43,035 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 [2022-11-21 13:55:43,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:55:43,036 INFO L225 Difference]: With dead ends: 27 [2022-11-21 13:55:43,036 INFO L226 Difference]: Without dead ends: 27 [2022-11-21 13:55:43,036 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 [2022-11-21 13:55:43,037 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 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 [2022-11-21 13:55:43,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:55:43,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-21 13:55:43,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2022-11-21 13:55:43,040 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) [2022-11-21 13:55:43,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 36 transitions. [2022-11-21 13:55:43,041 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 36 transitions. Word has length 9 [2022-11-21 13:55:43,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:55:43,041 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 36 transitions. [2022-11-21 13:55:43,041 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) [2022-11-21 13:55:43,042 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 36 transitions. [2022-11-21 13:55:43,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-21 13:55:43,042 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:55:43,042 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:55:43,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 13:55:43,043 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:55:43,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:55:43,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1885700678, now seen corresponding path program 1 times [2022-11-21 13:55:43,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:55:43,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289582984] [2022-11-21 13:55:43,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:43,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:55:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:43,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:43,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:55:43,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289582984] [2022-11-21 13:55:43,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289582984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:55:43,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:55:43,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 13:55:43,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074791137] [2022-11-21 13:55:43,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:55:43,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:55:43,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:55:43,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:55:43,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:55:43,504 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) [2022-11-21 13:55:43,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:55:43,708 INFO L93 Difference]: Finished difference Result 28 states and 38 transitions. [2022-11-21 13:55:43,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 13:55:43,708 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 [2022-11-21 13:55:43,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:55:43,709 INFO L225 Difference]: With dead ends: 28 [2022-11-21 13:55:43,709 INFO L226 Difference]: Without dead ends: 28 [2022-11-21 13:55:43,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-21 13:55:43,710 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 52 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:55:43,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 0 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:55:43,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-21 13:55:43,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2022-11-21 13:55:43,712 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) [2022-11-21 13:55:43,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 34 transitions. [2022-11-21 13:55:43,713 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 34 transitions. Word has length 9 [2022-11-21 13:55:43,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:55:43,713 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 34 transitions. [2022-11-21 13:55:43,713 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) [2022-11-21 13:55:43,713 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 34 transitions. [2022-11-21 13:55:43,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-21 13:55:43,714 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:55:43,714 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:55:43,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 13:55:43,714 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:55:43,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:55:43,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1672824740, now seen corresponding path program 1 times [2022-11-21 13:55:43,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:55:43,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718472514] [2022-11-21 13:55:43,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:43,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:55:43,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:43,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:43,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:55:43,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718472514] [2022-11-21 13:55:43,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718472514] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:55:43,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210190000] [2022-11-21 13:55:43,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:43,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:55:43,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:55:43,895 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:55:43,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 13:55:44,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:44,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-21 13:55:44,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:55:44,099 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 [2022-11-21 13:55:44,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:44,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:55:44,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:44,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210190000] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:55:44,295 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:55:44,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2022-11-21 13:55:44,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885377933] [2022-11-21 13:55:44,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:55:44,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 13:55:44,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:55:44,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 13:55:44,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-21 13:55:44,297 INFO L87 Difference]: Start difference. First operand 23 states and 34 transitions. Second operand has 11 states, 10 states have (on average 2.4) 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) [2022-11-21 13:55:44,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:55:44,497 INFO L93 Difference]: Finished difference Result 55 states and 74 transitions. [2022-11-21 13:55:44,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:55:44,498 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) 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 10 [2022-11-21 13:55:44,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:55:44,498 INFO L225 Difference]: With dead ends: 55 [2022-11-21 13:55:44,498 INFO L226 Difference]: Without dead ends: 55 [2022-11-21 13:55:44,499 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 [2022-11-21 13:55:44,499 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 79 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:55:44,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 0 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:55:44,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-21 13:55:44,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 29. [2022-11-21 13:55:44,502 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) [2022-11-21 13:55:44,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 55 transitions. [2022-11-21 13:55:44,502 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 55 transitions. Word has length 10 [2022-11-21 13:55:44,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:55:44,502 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 55 transitions. [2022-11-21 13:55:44,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) 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) [2022-11-21 13:55:44,503 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 55 transitions. [2022-11-21 13:55:44,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-21 13:55:44,503 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:55:44,503 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:55:44,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 13:55:44,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:55:44,711 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:55:44,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:55:44,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1672824667, now seen corresponding path program 1 times [2022-11-21 13:55:44,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:55:44,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72957077] [2022-11-21 13:55:44,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:44,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:55:44,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:45,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:45,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:55:45,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72957077] [2022-11-21 13:55:45,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72957077] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:55:45,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707281677] [2022-11-21 13:55:45,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:45,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:55:45,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:55:45,113 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:55:45,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 13:55:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:45,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-21 13:55:45,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:55:45,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:55:45,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:55:45,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:55:45,269 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 [2022-11-21 13:55:45,315 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-21 13:55:45,315 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 [2022-11-21 13:55:45,433 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 13:55:45,434 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 [2022-11-21 13:55:45,461 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-21 13:55:45,462 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 [2022-11-21 13:55:45,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:45,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:55:45,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:45,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707281677] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:55:45,695 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:55:45,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 14 [2022-11-21 13:55:45,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239489218] [2022-11-21 13:55:45,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:55:45,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 13:55:45,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:55:45,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 13:55:45,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-21 13:55:45,697 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) [2022-11-21 13:55:46,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:55:46,633 INFO L93 Difference]: Finished difference Result 49 states and 65 transitions. [2022-11-21 13:55:46,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 13:55:46,634 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 [2022-11-21 13:55:46,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:55:46,634 INFO L225 Difference]: With dead ends: 49 [2022-11-21 13:55:46,634 INFO L226 Difference]: Without dead ends: 49 [2022-11-21 13:55:46,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=186, Invalid=464, Unknown=0, NotChecked=0, Total=650 [2022-11-21 13:55:46,635 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 189 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:55:46,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 0 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 13:55:46,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-21 13:55:46,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 29. [2022-11-21 13:55:46,638 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) [2022-11-21 13:55:46,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 49 transitions. [2022-11-21 13:55:46,639 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 49 transitions. Word has length 10 [2022-11-21 13:55:46,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:55:46,639 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 49 transitions. [2022-11-21 13:55:46,639 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) [2022-11-21 13:55:46,639 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 49 transitions. [2022-11-21 13:55:46,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-21 13:55:46,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:55:46,640 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:55:46,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 13:55:46,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:55:46,847 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:55:46,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:55:46,848 INFO L85 PathProgramCache]: Analyzing trace with hash 317440932, now seen corresponding path program 1 times [2022-11-21 13:55:46,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:55:46,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823979350] [2022-11-21 13:55:46,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:46,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:55:46,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:46,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:46,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:55:46,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823979350] [2022-11-21 13:55:46,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823979350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:55:46,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:55:46,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:55:46,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706109490] [2022-11-21 13:55:46,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:55:46,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:55:46,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:55:46,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:55:46,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:55:46,882 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) [2022-11-21 13:55:46,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:55:46,910 INFO L93 Difference]: Finished difference Result 29 states and 47 transitions. [2022-11-21 13:55:46,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:55:46,911 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 [2022-11-21 13:55:46,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:55:46,913 INFO L225 Difference]: With dead ends: 29 [2022-11-21 13:55:46,913 INFO L226 Difference]: Without dead ends: 29 [2022-11-21 13:55:46,913 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 [2022-11-21 13:55:46,914 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 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 [2022-11-21 13:55:46,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:55:46,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-21 13:55:46,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-21 13:55:46,917 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) [2022-11-21 13:55:46,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 47 transitions. [2022-11-21 13:55:46,918 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 47 transitions. Word has length 11 [2022-11-21 13:55:46,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:55:46,918 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 47 transitions. [2022-11-21 13:55:46,918 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) [2022-11-21 13:55:46,918 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 47 transitions. [2022-11-21 13:55:46,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-21 13:55:46,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:55:46,919 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:55:46,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 13:55:46,920 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:55:46,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:55:46,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1267164009, now seen corresponding path program 1 times [2022-11-21 13:55:46,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:55:46,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500108081] [2022-11-21 13:55:46,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:46,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:55:46,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:47,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:47,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:55:47,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500108081] [2022-11-21 13:55:47,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500108081] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:55:47,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:55:47,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 13:55:47,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592444706] [2022-11-21 13:55:47,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:55:47,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:55:47,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:55:47,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:55:47,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:55:47,292 INFO L87 Difference]: Start difference. First operand 29 states and 47 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 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) [2022-11-21 13:55:47,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:55:47,427 INFO L93 Difference]: Finished difference Result 29 states and 45 transitions. [2022-11-21 13:55:47,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:55:47,428 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 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 [2022-11-21 13:55:47,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:55:47,429 INFO L225 Difference]: With dead ends: 29 [2022-11-21 13:55:47,429 INFO L226 Difference]: Without dead ends: 29 [2022-11-21 13:55:47,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-21 13:55:47,429 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:55:47,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:55:47,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-21 13:55:47,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-21 13:55:47,432 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) [2022-11-21 13:55:47,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 45 transitions. [2022-11-21 13:55:47,432 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 45 transitions. Word has length 12 [2022-11-21 13:55:47,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:55:47,433 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 45 transitions. [2022-11-21 13:55:47,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 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) [2022-11-21 13:55:47,433 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 45 transitions. [2022-11-21 13:55:47,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-21 13:55:47,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:55:47,433 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:55:47,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 13:55:47,434 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:55:47,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:55:47,434 INFO L85 PathProgramCache]: Analyzing trace with hash 617949736, now seen corresponding path program 1 times [2022-11-21 13:55:47,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:55:47,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273567917] [2022-11-21 13:55:47,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:47,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:55:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:47,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:47,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:55:47,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273567917] [2022-11-21 13:55:47,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273567917] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:55:47,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021439005] [2022-11-21 13:55:47,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:47,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:55:47,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:55:47,769 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:55:47,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 13:55:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:47,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-21 13:55:47,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:55:47,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:55:47,905 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 [2022-11-21 13:55:47,922 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-21 13:55:47,922 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 [2022-11-21 13:55:47,981 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 [2022-11-21 13:55:48,062 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 13:55:48,073 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-21 13:55:48,074 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 [2022-11-21 13:55:48,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:55:48,146 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-21 13:55:48,146 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 [2022-11-21 13:55:48,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:48,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:55:48,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:48,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021439005] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:55:48,409 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:55:48,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 16 [2022-11-21 13:55:48,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261584736] [2022-11-21 13:55:48,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:55:48,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-21 13:55:48,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:55:48,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-21 13:55:48,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-11-21 13:55:48,410 INFO L87 Difference]: Start difference. First operand 29 states and 45 transitions. Second operand has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 16 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) [2022-11-21 13:55:48,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:55:48,714 INFO L93 Difference]: Finished difference Result 28 states and 42 transitions. [2022-11-21 13:55:48,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:55:48,715 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 16 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 13 [2022-11-21 13:55:48,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:55:48,715 INFO L225 Difference]: With dead ends: 28 [2022-11-21 13:55:48,715 INFO L226 Difference]: Without dead ends: 28 [2022-11-21 13:55:48,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2022-11-21 13:55:48,716 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 64 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:55:48,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 0 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:55:48,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-21 13:55:48,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-21 13:55:48,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 25 states have (on average 1.68) internal successors, (42), 27 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) [2022-11-21 13:55:48,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 42 transitions. [2022-11-21 13:55:48,719 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 42 transitions. Word has length 13 [2022-11-21 13:55:48,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:55:48,719 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 42 transitions. [2022-11-21 13:55:48,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 16 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) [2022-11-21 13:55:48,720 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 42 transitions. [2022-11-21 13:55:48,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-21 13:55:48,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:55:48,720 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:55:48,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 13:55:48,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-21 13:55:48,921 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:55:48,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:55:48,922 INFO L85 PathProgramCache]: Analyzing trace with hash 617635395, now seen corresponding path program 2 times [2022-11-21 13:55:48,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:55:48,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998417141] [2022-11-21 13:55:48,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:48,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:55:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:49,181 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:49,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:55:49,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998417141] [2022-11-21 13:55:49,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998417141] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:55:49,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076004345] [2022-11-21 13:55:49,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 13:55:49,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:55:49,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:55:49,183 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:55:49,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 13:55:49,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 13:55:49,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:55:49,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-21 13:55:49,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:55:49,351 INFO L321 Elim1Store]: treesize reduction 40, result has 36.5 percent of original size [2022-11-21 13:55:49,351 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 [2022-11-21 13:55:49,385 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-21 13:55:49,385 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 [2022-11-21 13:55:49,570 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-21 13:55:49,571 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 [2022-11-21 13:55:49,590 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 13:55:49,591 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 [2022-11-21 13:55:49,917 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 13:55:49,917 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:55:49,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076004345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:55:49,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:55:49,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 10 [2022-11-21 13:55:49,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176288538] [2022-11-21 13:55:49,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:55:49,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:55:49,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:55:49,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:55:49,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-21 13:55:49,925 INFO L87 Difference]: Start difference. First operand 28 states and 42 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) [2022-11-21 13:55:50,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:55:50,138 INFO L93 Difference]: Finished difference Result 26 states and 39 transitions. [2022-11-21 13:55:50,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 13:55:50,138 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 [2022-11-21 13:55:50,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:55:50,139 INFO L225 Difference]: With dead ends: 26 [2022-11-21 13:55:50,139 INFO L226 Difference]: Without dead ends: 26 [2022-11-21 13:55:50,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-21 13:55:50,140 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 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 [2022-11-21 13:55:50,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 0 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:55:50,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-21 13:55:50,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-21 13:55:50,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.625) internal successors, (39), 25 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) [2022-11-21 13:55:50,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 39 transitions. [2022-11-21 13:55:50,143 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 39 transitions. Word has length 13 [2022-11-21 13:55:50,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:55:50,143 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 39 transitions. [2022-11-21 13:55:50,143 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) [2022-11-21 13:55:50,143 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 39 transitions. [2022-11-21 13:55:50,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-21 13:55:50,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:55:50,144 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:55:50,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 13:55:50,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-21 13:55:50,345 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:55:50,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:55:50,345 INFO L85 PathProgramCache]: Analyzing trace with hash 617635322, now seen corresponding path program 2 times [2022-11-21 13:55:50,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:55:50,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154401989] [2022-11-21 13:55:50,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:50,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:55:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:50,785 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:50,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:55:50,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154401989] [2022-11-21 13:55:50,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154401989] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:55:50,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807150692] [2022-11-21 13:55:50,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 13:55:50,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:55:50,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:55:50,791 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:55:50,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 13:55:50,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 13:55:50,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:55:50,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-21 13:55:50,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:55:50,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:55:50,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:55:50,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:55:50,949 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 [2022-11-21 13:55:50,996 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-21 13:55:50,997 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 [2022-11-21 13:55:51,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:55:51,090 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 13:55:51,090 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 [2022-11-21 13:55:51,101 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 [2022-11-21 13:55:51,305 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:51,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:55:51,604 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:51,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807150692] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:55:51,605 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:55:51,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 23 [2022-11-21 13:55:51,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694020836] [2022-11-21 13:55:51,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:55:51,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-21 13:55:51,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:55:51,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-21 13:55:51,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2022-11-21 13:55:51,607 INFO L87 Difference]: Start difference. First operand 26 states and 39 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) [2022-11-21 13:55:52,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:55:52,787 INFO L93 Difference]: Finished difference Result 54 states and 74 transitions. [2022-11-21 13:55:52,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 13:55:52,787 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 [2022-11-21 13:55:52,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:55:52,788 INFO L225 Difference]: With dead ends: 54 [2022-11-21 13:55:52,788 INFO L226 Difference]: Without dead ends: 54 [2022-11-21 13:55:52,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=367, Invalid=1193, Unknown=0, NotChecked=0, Total=1560 [2022-11-21 13:55:52,789 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 213 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:55:52,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 0 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 13:55:52,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-21 13:55:52,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 34. [2022-11-21 13:55:52,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 32 states have (on average 1.84375) internal successors, (59), 33 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) [2022-11-21 13:55:52,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 59 transitions. [2022-11-21 13:55:52,793 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 59 transitions. Word has length 13 [2022-11-21 13:55:52,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:55:52,794 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 59 transitions. [2022-11-21 13:55:52,794 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) [2022-11-21 13:55:52,794 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 59 transitions. [2022-11-21 13:55:52,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-21 13:55:52,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:55:52,795 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:55:52,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 13:55:53,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-21 13:55:53,012 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:55:53,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:55:53,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1967143760, now seen corresponding path program 1 times [2022-11-21 13:55:53,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:55:53,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065459021] [2022-11-21 13:55:53,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:53,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:55:53,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:53,420 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:53,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:55:53,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065459021] [2022-11-21 13:55:53,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065459021] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:55:53,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177318655] [2022-11-21 13:55:53,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:53,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:55:53,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:55:53,423 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:55:53,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 13:55:53,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:53,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-21 13:55:53,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:55:53,616 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-21 13:55:53,616 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 [2022-11-21 13:55:53,622 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 [2022-11-21 13:55:53,731 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-21 13:55:53,731 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 [2022-11-21 13:55:53,769 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 [2022-11-21 13:55:53,840 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 [2022-11-21 13:55:53,876 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 [2022-11-21 13:55:53,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:53,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:55:54,158 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:54,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177318655] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:55:54,158 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:55:54,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 18 [2022-11-21 13:55:54,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800570167] [2022-11-21 13:55:54,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:55:54,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 13:55:54,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:55:54,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 13:55:54,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=284, Unknown=6, NotChecked=0, Total=342 [2022-11-21 13:55:54,161 INFO L87 Difference]: Start difference. First operand 34 states and 59 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 18 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) [2022-11-21 13:55:54,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:55:54,540 INFO L93 Difference]: Finished difference Result 34 states and 57 transitions. [2022-11-21 13:55:54,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 13:55:54,541 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 18 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 14 [2022-11-21 13:55:54,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:55:54,542 INFO L225 Difference]: With dead ends: 34 [2022-11-21 13:55:54,542 INFO L226 Difference]: Without dead ends: 34 [2022-11-21 13:55:54,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=104, Invalid=396, Unknown=6, NotChecked=0, Total=506 [2022-11-21 13:55:54,543 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:55:54,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 13:55:54,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-21 13:55:54,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-21 13:55:54,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 32 states have (on average 1.78125) internal successors, (57), 33 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) [2022-11-21 13:55:54,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 57 transitions. [2022-11-21 13:55:54,545 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 57 transitions. Word has length 14 [2022-11-21 13:55:54,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:55:54,546 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 57 transitions. [2022-11-21 13:55:54,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 18 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) [2022-11-21 13:55:54,546 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 57 transitions. [2022-11-21 13:55:54,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-21 13:55:54,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:55:54,547 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:55:54,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 13:55:54,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-21 13:55:54,748 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:55:54,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:55:54,748 INFO L85 PathProgramCache]: Analyzing trace with hash 842485327, now seen corresponding path program 2 times [2022-11-21 13:55:54,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:55:54,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105395357] [2022-11-21 13:55:54,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:54,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:55:54,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:55,232 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:55,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:55:55,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105395357] [2022-11-21 13:55:55,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105395357] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:55:55,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736231893] [2022-11-21 13:55:55,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 13:55:55,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:55:55,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:55:55,234 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:55:55,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 13:55:55,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 13:55:55,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:55:55,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-21 13:55:55,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:55:55,434 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-21 13:55:55,434 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 [2022-11-21 13:55:55,451 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 [2022-11-21 13:55:55,505 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 13:55:55,505 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 [2022-11-21 13:55:55,544 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 [2022-11-21 13:55:55,614 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 [2022-11-21 13:55:55,650 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 [2022-11-21 13:55:55,698 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 [2022-11-21 13:55:55,730 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:55,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:55:55,842 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_388 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_388) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| 3 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2022-11-21 13:55:56,076 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-21 13:55:56,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736231893] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:55:56,077 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:55:56,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 21 [2022-11-21 13:55:56,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194405940] [2022-11-21 13:55:56,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:55:56,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-21 13:55:56,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:55:56,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-21 13:55:56,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=361, Unknown=6, NotChecked=38, Total=462 [2022-11-21 13:55:56,082 INFO L87 Difference]: Start difference. First operand 34 states and 57 transitions. Second operand has 22 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 21 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) [2022-11-21 13:55:56,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:55:56,957 INFO L93 Difference]: Finished difference Result 39 states and 61 transitions. [2022-11-21 13:55:56,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 13:55:56,958 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 21 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 15 [2022-11-21 13:55:56,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:55:56,958 INFO L225 Difference]: With dead ends: 39 [2022-11-21 13:55:56,959 INFO L226 Difference]: Without dead ends: 39 [2022-11-21 13:55:56,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=188, Invalid=740, Unknown=6, NotChecked=58, Total=992 [2022-11-21 13:55:56,960 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 33 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:55:56,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 0 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 221 Invalid, 8 Unknown, 25 Unchecked, 0.3s Time] [2022-11-21 13:55:56,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-21 13:55:56,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2022-11-21 13:55:56,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 32 states have (on average 1.71875) internal successors, (55), 33 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) [2022-11-21 13:55:56,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 55 transitions. [2022-11-21 13:55:56,963 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 55 transitions. Word has length 15 [2022-11-21 13:55:56,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:55:56,964 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 55 transitions. [2022-11-21 13:55:56,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 21 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) [2022-11-21 13:55:56,964 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 55 transitions. [2022-11-21 13:55:56,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-21 13:55:56,965 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:55:56,965 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:55:56,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-21 13:55:57,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:55:57,171 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:55:57,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:55:57,172 INFO L85 PathProgramCache]: Analyzing trace with hash 337812272, now seen corresponding path program 3 times [2022-11-21 13:55:57,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:55:57,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616406577] [2022-11-21 13:55:57,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:55:57,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:55:57,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:55:58,259 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:58,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:55:58,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616406577] [2022-11-21 13:55:58,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616406577] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:55:58,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780635576] [2022-11-21 13:55:58,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 13:55:58,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:55:58,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:55:58,262 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:55:58,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 13:55:58,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-21 13:55:58,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:55:58,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-21 13:55:58,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:55:58,456 INFO L321 Elim1Store]: treesize reduction 53, result has 32.9 percent of original size [2022-11-21 13:55:58,456 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 [2022-11-21 13:55:58,468 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 [2022-11-21 13:55:58,541 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-21 13:55:58,542 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 17 treesize of output 21 [2022-11-21 13:55:58,591 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 [2022-11-21 13:55:58,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:55:58,692 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 [2022-11-21 13:55:58,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:55:58,762 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 [2022-11-21 13:55:58,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:55:58,834 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 [2022-11-21 13:55:58,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:55:58,903 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 [2022-11-21 13:55:58,960 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:58,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:55:58,995 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 65 treesize of output 61 [2022-11-21 13:55:58,999 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 61 treesize of output 59 [2022-11-21 13:55:59,545 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:55:59,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780635576] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:55:59,546 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:55:59,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 26 [2022-11-21 13:55:59,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902455987] [2022-11-21 13:55:59,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:55:59,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-21 13:55:59,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:55:59,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-21 13:55:59,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=618, Unknown=2, NotChecked=0, Total=702 [2022-11-21 13:55:59,548 INFO L87 Difference]: Start difference. First operand 34 states and 55 transitions. Second operand has 27 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 26 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:00,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:00,407 INFO L93 Difference]: Finished difference Result 34 states and 53 transitions. [2022-11-21 13:56:00,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 13:56:00,407 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 26 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-21 13:56:00,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:00,408 INFO L225 Difference]: With dead ends: 34 [2022-11-21 13:56:00,408 INFO L226 Difference]: Without dead ends: 34 [2022-11-21 13:56:00,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=171, Invalid=949, Unknown=2, NotChecked=0, Total=1122 [2022-11-21 13:56:00,409 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 37 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:00,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 0 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 13:56:00,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-21 13:56:00,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-21 13:56:00,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 32 states have (on average 1.65625) internal successors, (53), 33 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) [2022-11-21 13:56:00,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 53 transitions. [2022-11-21 13:56:00,412 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 53 transitions. Word has length 16 [2022-11-21 13:56:00,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:00,413 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 53 transitions. [2022-11-21 13:56:00,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 26 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:00,413 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 53 transitions. [2022-11-21 13:56:00,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-21 13:56:00,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:00,414 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:00,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-21 13:56:00,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:56:00,614 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:56:00,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:00,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1872816751, now seen corresponding path program 4 times [2022-11-21 13:56:00,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:00,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609224324] [2022-11-21 13:56:00,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:00,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:00,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:01,724 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:01,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:01,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609224324] [2022-11-21 13:56:01,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609224324] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:56:01,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099196002] [2022-11-21 13:56:01,725 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 13:56:01,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:56:01,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:56:01,727 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:56:01,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-21 13:56:01,901 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 13:56:01,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:56:01,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-21 13:56:01,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:56:01,956 INFO L321 Elim1Store]: treesize reduction 53, result has 32.9 percent of original size [2022-11-21 13:56:01,956 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 [2022-11-21 13:56:01,973 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 [2022-11-21 13:56:02,084 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-21 13:56:02,085 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 [2022-11-21 13:56:02,129 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 [2022-11-21 13:56:02,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:56:02,224 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 [2022-11-21 13:56:02,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:56:02,281 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 [2022-11-21 13:56:02,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:56:02,337 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 14 treesize of output 16 [2022-11-21 13:56:02,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:56:02,386 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 [2022-11-21 13:56:02,453 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 [2022-11-21 13:56:02,498 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:02,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:56:02,532 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 65 treesize of output 61 [2022-11-21 13:56:02,536 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 61 treesize of output 59 [2022-11-21 13:56:02,539 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 59 treesize of output 57 [2022-11-21 13:56:02,636 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_504 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_504) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| 2 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2022-11-21 13:56:02,643 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_504 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_504) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| 3 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2022-11-21 13:56:02,649 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_504 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_504) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 4)))) is different from false [2022-11-21 13:56:02,961 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 12 not checked. [2022-11-21 13:56:02,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099196002] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:56:02,962 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:56:02,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 30 [2022-11-21 13:56:02,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003782745] [2022-11-21 13:56:02,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:56:02,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-21 13:56:02,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:02,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-21 13:56:02,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=670, Unknown=12, NotChecked=162, Total=930 [2022-11-21 13:56:02,966 INFO L87 Difference]: Start difference. First operand 34 states and 53 transitions. Second operand has 31 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 30 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) [2022-11-21 13:56:04,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:04,370 INFO L93 Difference]: Finished difference Result 36 states and 53 transitions. [2022-11-21 13:56:04,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 13:56:04,370 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 30 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-21 13:56:04,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:04,371 INFO L225 Difference]: With dead ends: 36 [2022-11-21 13:56:04,371 INFO L226 Difference]: Without dead ends: 36 [2022-11-21 13:56:04,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 3 IntricatePredicates, 2 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=234, Invalid=1098, Unknown=12, NotChecked=216, Total=1560 [2022-11-21 13:56:04,373 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 45 mSolverCounterUnsat, 22 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 22 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:04,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 0 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 371 Invalid, 22 Unknown, 73 Unchecked, 0.4s Time] [2022-11-21 13:56:04,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-21 13:56:04,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2022-11-21 13:56:04,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 32 states have (on average 1.59375) internal successors, (51), 33 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:04,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 51 transitions. [2022-11-21 13:56:04,376 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 51 transitions. Word has length 17 [2022-11-21 13:56:04,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:04,376 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 51 transitions. [2022-11-21 13:56:04,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 30 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) [2022-11-21 13:56:04,377 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 51 transitions. [2022-11-21 13:56:04,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-21 13:56:04,377 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:04,377 INFO L195 NwaCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:04,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-21 13:56:04,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:56:04,589 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:56:04,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:04,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1872502330, now seen corresponding path program 3 times [2022-11-21 13:56:04,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:04,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149431309] [2022-11-21 13:56:04,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:04,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:05,730 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:05,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:05,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149431309] [2022-11-21 13:56:05,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149431309] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:56:05,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107000661] [2022-11-21 13:56:05,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 13:56:05,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:56:05,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:56:05,735 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:56:05,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-21 13:56:05,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-21 13:56:05,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:56:05,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-21 13:56:05,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:56:05,976 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-21 13:56:05,976 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 [2022-11-21 13:56:05,981 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 [2022-11-21 13:56:06,095 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-21 13:56:06,096 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 [2022-11-21 13:56:06,147 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 [2022-11-21 13:56:06,244 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 [2022-11-21 13:56:06,287 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 [2022-11-21 13:56:06,350 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 [2022-11-21 13:56:06,401 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 [2022-11-21 13:56:06,457 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 [2022-11-21 13:56:06,508 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 [2022-11-21 13:56:06,563 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 [2022-11-21 13:56:06,605 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:06,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:56:06,772 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_570 (Array Int Int))) (= 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_570) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| 3 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2022-11-21 13:56:06,778 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_570 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_570) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 4)) 0)) is different from false [2022-11-21 13:56:06,785 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_570 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_570) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| 5 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)) 0)) is different from false [2022-11-21 13:56:06,792 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_570 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_570) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| 6 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)) 0)) is different from false [2022-11-21 13:56:06,798 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_570 (Array Int Int))) (= 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_570) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| 7 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2022-11-21 13:56:06,888 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_570 (Array Int Int)) (v_ArrVal_563 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_563) c_~v~0.base v_ArrVal_570) 3) 7) 0)) is different from false [2022-11-21 13:56:06,965 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 25 not checked. [2022-11-21 13:56:06,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107000661] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:56:06,966 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:56:06,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 35 [2022-11-21 13:56:06,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432272797] [2022-11-21 13:56:06,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:56:06,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-21 13:56:06,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:06,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-21 13:56:06,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=776, Unknown=32, NotChecked=366, Total=1260 [2022-11-21 13:56:06,971 INFO L87 Difference]: Start difference. First operand 34 states and 51 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) [2022-11-21 13:56:10,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:10,051 INFO L93 Difference]: Finished difference Result 54 states and 66 transitions. [2022-11-21 13:56:10,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-21 13:56:10,051 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 [2022-11-21 13:56:10,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:10,054 INFO L225 Difference]: With dead ends: 54 [2022-11-21 13:56:10,054 INFO L226 Difference]: Without dead ends: 54 [2022-11-21 13:56:10,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=308, Invalid=1747, Unknown=39, NotChecked=558, Total=2652 [2022-11-21 13:56:10,056 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 66 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 74 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 177 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:10,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 0 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 439 Invalid, 9 Unknown, 177 Unchecked, 0.5s Time] [2022-11-21 13:56:10,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-21 13:56:10,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 40. [2022-11-21 13:56:10,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 38 states have (on average 1.4210526315789473) 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) [2022-11-21 13:56:10,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 54 transitions. [2022-11-21 13:56:10,059 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 54 transitions. Word has length 17 [2022-11-21 13:56:10,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:10,059 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 54 transitions. [2022-11-21 13:56:10,059 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) [2022-11-21 13:56:10,060 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 54 transitions. [2022-11-21 13:56:10,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-21 13:56:10,060 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:10,060 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:10,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-21 13:56:10,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:56:10,261 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:56:10,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:10,261 INFO L85 PathProgramCache]: Analyzing trace with hash -2081651952, now seen corresponding path program 5 times [2022-11-21 13:56:10,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:10,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097579078] [2022-11-21 13:56:10,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:10,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:11,553 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:11,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:11,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097579078] [2022-11-21 13:56:11,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097579078] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:56:11,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642639090] [2022-11-21 13:56:11,554 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 13:56:11,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:56:11,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:56:11,556 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:56:11,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-21 13:56:11,723 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-21 13:56:11,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:56:11,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-21 13:56:11,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:56:11,773 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-21 13:56:11,774 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 [2022-11-21 13:56:11,783 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 [2022-11-21 13:56:11,876 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-21 13:56:11,876 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 [2022-11-21 13:56:11,916 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 [2022-11-21 13:56:11,999 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 [2022-11-21 13:56:12,049 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 [2022-11-21 13:56:12,097 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 [2022-11-21 13:56:12,147 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 [2022-11-21 13:56:12,204 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 [2022-11-21 13:56:12,253 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 [2022-11-21 13:56:12,295 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:12,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:56:12,332 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_636 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_636) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 1)))) is different from false [2022-11-21 13:56:12,339 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_636 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_636) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| 2 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2022-11-21 13:56:12,403 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_636 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_636) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 4)))) is different from false [2022-11-21 13:56:12,715 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 15 not checked. [2022-11-21 13:56:12,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642639090] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:56:12,727 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:56:12,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 30 [2022-11-21 13:56:12,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34564208] [2022-11-21 13:56:12,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:56:12,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-21 13:56:12,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:12,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-21 13:56:12,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=683, Unknown=17, NotChecked=162, Total=930 [2022-11-21 13:56:12,731 INFO L87 Difference]: Start difference. First operand 40 states and 54 transitions. Second operand has 31 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 30 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) [2022-11-21 13:56:14,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:14,093 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2022-11-21 13:56:14,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 13:56:14,094 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 30 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) Word has length 18 [2022-11-21 13:56:14,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:14,094 INFO L225 Difference]: With dead ends: 40 [2022-11-21 13:56:14,094 INFO L226 Difference]: Without dead ends: 40 [2022-11-21 13:56:14,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 16 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=186, Invalid=1141, Unknown=17, NotChecked=216, Total=1560 [2022-11-21 13:56:14,096 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 51 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 47 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:14,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 0 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 456 Invalid, 17 Unknown, 70 Unchecked, 0.5s Time] [2022-11-21 13:56:14,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-21 13:56:14,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-11-21 13:56:14,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 38 states have (on average 1.3421052631578947) internal successors, (51), 39 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:14,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2022-11-21 13:56:14,098 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 18 [2022-11-21 13:56:14,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:14,099 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2022-11-21 13:56:14,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 30 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) [2022-11-21 13:56:14,099 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2022-11-21 13:56:14,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-21 13:56:14,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:14,100 INFO L195 NwaCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:14,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-21 13:56:14,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-21 13:56:14,306 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:56:14,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:14,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1039205732, now seen corresponding path program 1 times [2022-11-21 13:56:14,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:14,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513932958] [2022-11-21 13:56:14,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:14,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:15,324 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:15,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:15,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513932958] [2022-11-21 13:56:15,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513932958] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:56:15,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360245596] [2022-11-21 13:56:15,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:15,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:56:15,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:56:15,326 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:56:15,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-21 13:56:15,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:15,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-21 13:56:15,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:56:15,523 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-21 13:56:15,524 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 [2022-11-21 13:56:15,530 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 14 treesize of output 16 [2022-11-21 13:56:15,631 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-21 13:56:15,631 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 [2022-11-21 13:56:15,689 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 [2022-11-21 13:56:15,780 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 [2022-11-21 13:56:15,829 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 [2022-11-21 13:56:15,890 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 [2022-11-21 13:56:15,946 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 [2022-11-21 13:56:16,015 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 [2022-11-21 13:56:16,083 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 14 treesize of output 16 [2022-11-21 13:56:16,144 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 [2022-11-21 13:56:16,197 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:16,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:56:16,324 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_702 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_702) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| 2 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)) 0)) is different from false [2022-11-21 13:56:16,331 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_702 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_702) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| 3 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)) 0)) is different from false [2022-11-21 13:56:16,495 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_702 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_702) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| 6 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)) 0)) is different from false [2022-11-21 13:56:16,864 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 18 not checked. [2022-11-21 13:56:16,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360245596] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:56:16,865 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:56:16,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 35 [2022-11-21 13:56:16,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228142810] [2022-11-21 13:56:16,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:56:16,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-21 13:56:16,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:16,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-21 13:56:16,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=924, Unknown=60, NotChecked=192, Total=1260 [2022-11-21 13:56:16,867 INFO L87 Difference]: Start difference. First operand 40 states and 51 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) [2022-11-21 13:56:18,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:18,531 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2022-11-21 13:56:18,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 13:56:18,532 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 [2022-11-21 13:56:18,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:18,532 INFO L225 Difference]: With dead ends: 39 [2022-11-21 13:56:18,533 INFO L226 Difference]: Without dead ends: 39 [2022-11-21 13:56:18,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=236, Invalid=1605, Unknown=63, NotChecked=258, Total=2162 [2022-11-21 13:56:18,534 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 60 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 65 mSolverCounterUnsat, 27 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 27 IncrementalHoareTripleChecker+Unknown, 80 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:18,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 0 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 465 Invalid, 27 Unknown, 80 Unchecked, 0.5s Time] [2022-11-21 13:56:18,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-21 13:56:18,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 30. [2022-11-21 13:56:18,536 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) [2022-11-21 13:56:18,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2022-11-21 13:56:18,537 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 18 [2022-11-21 13:56:18,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:18,537 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2022-11-21 13:56:18,537 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) [2022-11-21 13:56:18,538 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2022-11-21 13:56:18,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-21 13:56:18,538 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:18,538 INFO L195 NwaCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:18,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-21 13:56:18,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-21 13:56:18,744 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:56:18,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:18,745 INFO L85 PathProgramCache]: Analyzing trace with hash -116130161, now seen corresponding path program 6 times [2022-11-21 13:56:18,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:18,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913258777] [2022-11-21 13:56:18,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:18,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:56:18,785 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:56:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:56:18,833 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 13:56:18,833 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 13:56:18,834 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK (25 of 26 remaining) [2022-11-21 13:56:18,837 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE (24 of 26 remaining) [2022-11-21 13:56:18,837 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE (23 of 26 remaining) [2022-11-21 13:56:18,837 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (22 of 26 remaining) [2022-11-21 13:56:18,838 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE (21 of 26 remaining) [2022-11-21 13:56:18,838 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 26 remaining) [2022-11-21 13:56:18,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 26 remaining) [2022-11-21 13:56:18,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 26 remaining) [2022-11-21 13:56:18,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 26 remaining) [2022-11-21 13:56:18,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 26 remaining) [2022-11-21 13:56:18,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 26 remaining) [2022-11-21 13:56:18,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 26 remaining) [2022-11-21 13:56:18,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 26 remaining) [2022-11-21 13:56:18,843 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 26 remaining) [2022-11-21 13:56:18,843 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 26 remaining) [2022-11-21 13:56:18,843 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 26 remaining) [2022-11-21 13:56:18,843 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 26 remaining) [2022-11-21 13:56:18,843 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (8 of 26 remaining) [2022-11-21 13:56:18,844 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 26 remaining) [2022-11-21 13:56:18,844 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 26 remaining) [2022-11-21 13:56:18,844 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE (5 of 26 remaining) [2022-11-21 13:56:18,844 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE (4 of 26 remaining) [2022-11-21 13:56:18,845 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (3 of 26 remaining) [2022-11-21 13:56:18,845 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE (2 of 26 remaining) [2022-11-21 13:56:18,845 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 26 remaining) [2022-11-21 13:56:18,845 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 26 remaining) [2022-11-21 13:56:18,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-21 13:56:18,848 INFO L444 BasicCegarLoop]: Path program histogram: [6, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:18,854 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-21 13:56:18,854 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 13:56:18,881 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:56:18,882 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:56:18,884 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:56:18,885 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:56:18,887 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:56:18,887 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:56:18,888 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:56:18,888 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:56:18,888 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:56:18,889 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:56:18,890 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:56:18,890 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:56:18,890 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:56:18,891 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:56:18,894 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:56:18,894 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:56:18,895 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:56:18,895 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:56:18,896 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:56:18,896 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:56:18,897 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:56:18,898 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:56:18,899 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:56:18,899 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:56:18,899 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:56:18,900 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:56:18,902 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:56:18,902 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:56:18,903 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:56:18,903 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:56:18,903 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:56:18,904 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:56:18,905 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:56:18,905 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:56:18,907 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled [2022-11-21 13:56:18,907 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:56:18,910 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled [2022-11-21 13:56:18,911 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:56:18,911 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:56:18,911 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:56:18,911 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled [2022-11-21 13:56:18,912 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:56:18,912 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled [2022-11-21 13:56:18,912 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:56:18,912 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:56:18,913 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:56:18,913 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled [2022-11-21 13:56:18,913 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:56:18,913 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled [2022-11-21 13:56:18,913 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:56:18,914 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:56:18,914 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:56:18,914 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled [2022-11-21 13:56:18,914 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:56:18,915 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled [2022-11-21 13:56:18,916 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:56:18,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:56:18 BasicIcfg [2022-11-21 13:56:18,951 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 13:56:18,952 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 13:56:18,952 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 13:56:18,952 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 13:56:18,953 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:55:34" (3/4) ... [2022-11-21 13:56:18,956 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-21 13:56:18,956 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 13:56:18,957 INFO L158 Benchmark]: Toolchain (without parser) took 46270.35ms. Allocated memory was 134.2MB in the beginning and 302.0MB in the end (delta: 167.8MB). Free memory was 66.3MB in the beginning and 202.5MB in the end (delta: -136.2MB). Peak memory consumption was 32.9MB. Max. memory is 16.1GB. [2022-11-21 13:56:18,957 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 134.2MB. Free memory is still 108.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 13:56:18,958 INFO L158 Benchmark]: CACSL2BoogieTranslator took 739.68ms. Allocated memory was 134.2MB in the beginning and 172.0MB in the end (delta: 37.7MB). Free memory was 66.0MB in the beginning and 129.9MB in the end (delta: -63.9MB). Peak memory consumption was 39.6MB. Max. memory is 16.1GB. [2022-11-21 13:56:18,958 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.39ms. Allocated memory is still 172.0MB. Free memory was 129.9MB in the beginning and 127.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 13:56:18,959 INFO L158 Benchmark]: Boogie Preprocessor took 59.49ms. Allocated memory is still 172.0MB. Free memory was 127.8MB in the beginning and 125.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 13:56:18,959 INFO L158 Benchmark]: RCFGBuilder took 645.69ms. Allocated memory is still 172.0MB. Free memory was 125.6MB in the beginning and 130.2MB in the end (delta: -4.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 13:56:18,959 INFO L158 Benchmark]: TraceAbstraction took 44728.54ms. Allocated memory was 172.0MB in the beginning and 302.0MB in the end (delta: 130.0MB). Free memory was 129.1MB in the beginning and 202.5MB in the end (delta: -73.4MB). Peak memory consumption was 57.6MB. Max. memory is 16.1GB. [2022-11-21 13:56:18,960 INFO L158 Benchmark]: Witness Printer took 4.42ms. Allocated memory is still 302.0MB. Free memory is still 202.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 13:56:18,965 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 134.2MB. Free memory is still 108.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 739.68ms. Allocated memory was 134.2MB in the beginning and 172.0MB in the end (delta: 37.7MB). Free memory was 66.0MB in the beginning and 129.9MB in the end (delta: -63.9MB). Peak memory consumption was 39.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 85.39ms. Allocated memory is still 172.0MB. Free memory was 129.9MB in the beginning and 127.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.49ms. Allocated memory is still 172.0MB. Free memory was 127.8MB in the beginning and 125.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 645.69ms. Allocated memory is still 172.0MB. Free memory was 125.6MB in the beginning and 130.2MB in the end (delta: -4.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 44728.54ms. Allocated memory was 172.0MB in the beginning and 302.0MB in the end (delta: 130.0MB). Free memory was 129.1MB in the beginning and 202.5MB in the end (delta: -73.4MB). Peak memory consumption was 57.6MB. Max. memory is 16.1GB. * Witness Printer took 4.42ms. Allocated memory is still 302.0MB. Free memory is still 202.5MB. 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_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_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_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_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_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_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_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_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_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_src#1 : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.3s, 121 PlacesBefore, 39 PlacesAfterwards, 119 TransitionsBefore, 34 TransitionsAfterwards, 360 CoEnabledTransitionPairs, 6 FixpointIterations, 72 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 9 ConcurrentYvCompositions, 3 ChoiceCompositions, 134 TotalNumberOfCompositions, 485 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 396, independent: 378, independent conditional: 0, independent unconditional: 378, 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: 240, independent: 228, independent conditional: 0, independent unconditional: 228, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 240, independent: 227, independent conditional: 0, independent unconditional: 227, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 13, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 47, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 396, independent: 150, independent conditional: 0, independent unconditional: 150, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 240, unknown conditional: 0, unknown unconditional: 240] , Statistics on independence cache: Total cache size (in pairs): 14, Positive cache size: 12, Positive conditional cache size: 0, Positive unconditional cache size: 12, 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)=-2, t1={10:0}, t2={9:0}, v={0:0}] [L1123] 0 \read(t1) VAL [\read(t1)=-2, arg={0:0}, t1={10:0}, t2={9:0}, v={0:0}] [L1111] 1 v = malloc(sizeof(char) * 8) [L1112] 1 return 0; [L1123] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\read(t1)=-2, \result={0:0}, arg={0:0}, arg={0:0}, t1={10:0}, t2={9:0}, v={-3:0}] [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)=-1, t1={10:0}, t2={9:0}, v={-3:0}] [L1116] COND TRUE 2 \read(*v) [L1116] FCALL 2 strcpy(v, "Bigshot") [L1117] 2 return 0; [L1125] 0 \read(t2) VAL [\read(t2)=-1, \result={0:0}, arg={0:0}, arg={0:0}, t1={10:0}, t2={9:0}, v={-3:0}] [L1125] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\read(t2)=-1, \result={0:0}, arg={0:0}, arg={0:0}, t1={10:0}, t2={9:0}, v={-3:0}] [L1126] EXPR 0 !v || v[0] == 'B' [L1126] EXPR 0 v[0] [L1126] EXPR 0 !v || v[0] == 'B' [L1126] CALL 0 __VERIFIER_assert(!v || v[0] == 'B') [L1107] COND FALSE 0 !(!expression) [L1126] RET 0 __VERIFIER_assert(!v || 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, 152 locations, 26 error locations. Started 1 CEGAR loops. OverallTime: 44.4s, OverallIterations: 25, TraceHistogramMax: 8, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 13.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.3s, HoareTripleCheckerStatistics: 83 mSolverCounterUnknown, 1204 SdHoareTripleChecker+Valid, 4.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1204 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 3.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 425 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 426 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3462 IncrementalHoareTripleChecker+Invalid, 4396 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 426 mSolverCounterUnsat, 5 mSDtfsCounter, 3462 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 570 GetRequests, 164 SyntacticMatches, 9 SemanticMatches, 397 ConstructedPredicates, 16 IntricatePredicates, 3 DeprecatedPredicates, 1364 ImplicationChecksByTransitivity, 16.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=0, InterpolantAutomatonStates: 173, 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, 24 MinimizatonAttempts, 158 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 19.0s InterpolantComputationTime, 449 NumberOfCodeBlocks, 445 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 544 ConstructedInterpolants, 124 QuantifiedInterpolants, 9785 SizeOfPredicates, 89 NumberOfNonLiveVariables, 2866 ConjunctsInSsa, 445 ConjunctsInUnsatCore, 47 InterpolantComputations, 13 PerfectInterpolantSequences, 58/440 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 [2022-11-21 13:56:18,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/bigshot_s.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a --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 4d8c741fd238f074816319de9a9bd5d97cd9b35eb7f53a276be973ea0c31ecbe --- 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-b5237d8 [2022-11-21 13:56:21,449 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:56:21,452 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:56:21,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:56:21,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:56:21,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:56:21,505 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:56:21,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:56:21,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:56:21,515 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:56:21,516 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:56:21,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:56:21,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:56:21,524 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:56:21,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:56:21,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:56:21,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:56:21,535 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:56:21,537 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:56:21,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:56:21,545 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:56:21,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:56:21,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:56:21,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:56:21,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:56:21,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:56:21,557 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:56:21,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:56:21,558 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:56:21,559 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:56:21,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:56:21,560 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:56:21,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:56:21,562 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:56:21,584 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:56:21,584 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:56:21,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:56:21,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:56:21,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:56:21,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:56:21,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:56:21,592 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-21 13:56:21,639 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:56:21,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:56:21,641 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:56:21,641 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:56:21,642 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 13:56:21,642 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 13:56:21,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:56:21,643 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:56:21,644 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:56:21,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:56:21,645 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 13:56:21,645 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 13:56:21,645 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 13:56:21,646 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 13:56:21,646 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:56:21,646 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-21 13:56:21,646 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-21 13:56:21,647 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-21 13:56:21,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 13:56:21,647 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 13:56:21,647 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-21 13:56:21,647 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-21 13:56:21,648 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 13:56:21,648 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:56:21,648 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:56:21,648 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:56:21,648 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 13:56:21,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:56:21,649 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:56:21,649 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 13:56:21,649 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-21 13:56:21,650 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-21 13:56:21,650 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-21 13:56:21,650 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_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d8c741fd238f074816319de9a9bd5d97cd9b35eb7f53a276be973ea0c31ecbe [2022-11-21 13:56:22,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:56:22,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:56:22,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:56:22,043 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:56:22,043 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:56:22,045 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/pthread/bigshot_s.i [2022-11-21 13:56:25,104 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:56:25,448 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:56:25,449 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/sv-benchmarks/c/pthread/bigshot_s.i [2022-11-21 13:56:25,466 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/data/3c9abfd2b/4dc9938af6e54c289ed34df45c8c459f/FLAG0c06e0f98 [2022-11-21 13:56:25,493 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/data/3c9abfd2b/4dc9938af6e54c289ed34df45c8c459f [2022-11-21 13:56:25,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:56:25,497 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:56:25,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:56:25,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:56:25,502 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:56:25,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:56:25" (1/1) ... [2022-11-21 13:56:25,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19a19bb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:25, skipping insertion in model container [2022-11-21 13:56:25,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:56:25" (1/1) ... [2022-11-21 13:56:25,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:56:25,582 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:56:26,349 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_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/sv-benchmarks/c/pthread/bigshot_s.i[55202,55215] [2022-11-21 13:56:26,380 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:56:26,399 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 13:56:26,485 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_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/sv-benchmarks/c/pthread/bigshot_s.i[55202,55215] [2022-11-21 13:56:26,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:56:26,610 INFO L208 MainTranslator]: Completed translation [2022-11-21 13:56:26,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:26 WrapperNode [2022-11-21 13:56:26,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:56:26,612 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 13:56:26,613 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 13:56:26,613 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 13:56:26,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:26" (1/1) ... [2022-11-21 13:56:26,668 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:26" (1/1) ... [2022-11-21 13:56:26,705 INFO L138 Inliner]: procedures = 327, calls = 33, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2022-11-21 13:56:26,706 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 13:56:26,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 13:56:26,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 13:56:26,708 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 13:56:26,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:26" (1/1) ... [2022-11-21 13:56:26,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:26" (1/1) ... [2022-11-21 13:56:26,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:26" (1/1) ... [2022-11-21 13:56:26,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:26" (1/1) ... [2022-11-21 13:56:26,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:26" (1/1) ... [2022-11-21 13:56:26,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:26" (1/1) ... [2022-11-21 13:56:26,740 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:26" (1/1) ... [2022-11-21 13:56:26,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:26" (1/1) ... [2022-11-21 13:56:26,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 13:56:26,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 13:56:26,746 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 13:56:26,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 13:56:26,747 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:26" (1/1) ... [2022-11-21 13:56:26,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:56:26,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:56:26,790 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 13:56:26,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 13:56:26,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-21 13:56:26,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-21 13:56:26,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 13:56:26,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 13:56:26,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-21 13:56:26,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-21 13:56:26,834 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 13:56:26,836 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 13:56:26,837 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 13:56:26,837 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 13:56:26,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-21 13:56:26,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 13:56:26,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 13:56:26,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 13:56:26,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 13:56:26,840 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 13:56:27,063 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 13:56:27,065 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 13:56:27,405 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 13:56:27,412 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 13:56:27,413 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 13:56:27,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:56:27 BoogieIcfgContainer [2022-11-21 13:56:27,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 13:56:27,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 13:56:27,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 13:56:27,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 13:56:27,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:56:25" (1/3) ... [2022-11-21 13:56:27,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a03a53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:56:27, skipping insertion in model container [2022-11-21 13:56:27,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:26" (2/3) ... [2022-11-21 13:56:27,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a03a53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:56:27, skipping insertion in model container [2022-11-21 13:56:27,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:56:27" (3/3) ... [2022-11-21 13:56:27,424 INFO L112 eAbstractionObserver]: Analyzing ICFG bigshot_s.i [2022-11-21 13:56:27,444 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 13:56:27,445 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-21 13:56:27,445 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 13:56:27,586 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-21 13:56:27,642 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-21 13:56:27,659 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 120 transitions, 256 flow [2022-11-21 13:56:27,662 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 120 transitions, 256 flow [2022-11-21 13:56:27,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 120 transitions, 256 flow [2022-11-21 13:56:27,713 INFO L130 PetriNetUnfolder]: 5/118 cut-off events. [2022-11-21 13:56:27,714 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 13:56:27,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 118 events. 5/118 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 153 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 77. Up to 2 conditions per place. [2022-11-21 13:56:27,719 INFO L119 LiptonReduction]: Number of co-enabled transitions 360 [2022-11-21 13:56:42,999 INFO L134 LiptonReduction]: Checked pairs total: 464 [2022-11-21 13:56:42,999 INFO L136 LiptonReduction]: Total number of compositions: 139 [2022-11-21 13:56:43,007 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 34 transitions, 84 flow [2022-11-21 13:56:43,021 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) [2022-11-21 13:56:43,040 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:56:43,046 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;@564fa676, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:56:43,046 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-11-21 13:56:43,048 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) [2022-11-21 13:56:43,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-21 13:56:43,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:43,052 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-21 13:56:43,052 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:56:43,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:43,057 INFO L85 PathProgramCache]: Analyzing trace with hash 465, now seen corresponding path program 1 times [2022-11-21 13:56:43,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:56:43,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [207662050] [2022-11-21 13:56:43,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:43,071 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 [2022-11-21 13:56:43,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:56:43,083 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:56:43,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:56:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:43,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-21 13:56:43,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:56:43,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:43,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:56:43,202 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:56:43,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [207662050] [2022-11-21 13:56:43,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [207662050] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:43,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:43,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-21 13:56:43,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44114119] [2022-11-21 13:56:43,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:43,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 13:56:43,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:56:43,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 13:56:43,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 13:56:43,245 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) [2022-11-21 13:56:43,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:43,364 INFO L93 Difference]: Finished difference Result 47 states and 75 transitions. [2022-11-21 13:56:43,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 13:56:43,367 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 [2022-11-21 13:56:43,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:43,375 INFO L225 Difference]: With dead ends: 47 [2022-11-21 13:56:43,376 INFO L226 Difference]: Without dead ends: 47 [2022-11-21 13:56:43,377 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 [2022-11-21 13:56:43,380 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 [2022-11-21 13:56:43,381 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] [2022-11-21 13:56:43,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-21 13:56:43,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-11-21 13:56:43,433 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) [2022-11-21 13:56:43,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 75 transitions. [2022-11-21 13:56:43,452 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 75 transitions. Word has length 1 [2022-11-21 13:56:43,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:43,452 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 75 transitions. [2022-11-21 13:56:43,453 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) [2022-11-21 13:56:43,453 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 75 transitions. [2022-11-21 13:56:43,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-21 13:56:43,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:43,454 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-21 13:56:43,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:56:43,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:56:43,655 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:56:43,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:43,656 INFO L85 PathProgramCache]: Analyzing trace with hash 457424, now seen corresponding path program 1 times [2022-11-21 13:56:43,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:56:43,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1378282559] [2022-11-21 13:56:43,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:43,657 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 [2022-11-21 13:56:43,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:56:43,663 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:56:43,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:56:43,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:43,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 13:56:43,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:56:43,836 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-21 13:56:43,838 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 [2022-11-21 13:56:43,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:43,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:56:43,874 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:56:43,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1378282559] [2022-11-21 13:56:43,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1378282559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:43,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:43,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 13:56:43,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142928810] [2022-11-21 13:56:43,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:43,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:56:43,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:56:43,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:56:43,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:56:43,884 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) [2022-11-21 13:56:43,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:43,994 INFO L93 Difference]: Finished difference Result 45 states and 72 transitions. [2022-11-21 13:56:43,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:56:43,995 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 [2022-11-21 13:56:43,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:43,995 INFO L225 Difference]: With dead ends: 45 [2022-11-21 13:56:43,996 INFO L226 Difference]: Without dead ends: 45 [2022-11-21 13:56:43,996 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 [2022-11-21 13:56:43,997 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 [2022-11-21 13:56:43,998 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] [2022-11-21 13:56:43,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-21 13:56:44,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-11-21 13:56:44,006 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) [2022-11-21 13:56:44,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 72 transitions. [2022-11-21 13:56:44,010 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 72 transitions. Word has length 3 [2022-11-21 13:56:44,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:44,011 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 72 transitions. [2022-11-21 13:56:44,012 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) [2022-11-21 13:56:44,012 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 72 transitions. [2022-11-21 13:56:44,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-21 13:56:44,013 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:44,013 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-21 13:56:44,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:56:44,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:56:44,225 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:56:44,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:44,226 INFO L85 PathProgramCache]: Analyzing trace with hash 457425, now seen corresponding path program 1 times [2022-11-21 13:56:44,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:56:44,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [252137274] [2022-11-21 13:56:44,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:44,227 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 [2022-11-21 13:56:44,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:56:44,228 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:56:44,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:56:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:44,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 13:56:44,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:56:44,360 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-21 13:56:44,360 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 11 [2022-11-21 13:56:44,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:44,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:56:44,407 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:56:44,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [252137274] [2022-11-21 13:56:44,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [252137274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:44,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:44,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 13:56:44,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121844745] [2022-11-21 13:56:44,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:44,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:56:44,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:56:44,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:56:44,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:56:44,423 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) [2022-11-21 13:56:44,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:44,551 INFO L93 Difference]: Finished difference Result 44 states and 70 transitions. [2022-11-21 13:56:44,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:56:44,552 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 [2022-11-21 13:56:44,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:44,553 INFO L225 Difference]: With dead ends: 44 [2022-11-21 13:56:44,553 INFO L226 Difference]: Without dead ends: 44 [2022-11-21 13:56:44,553 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 [2022-11-21 13:56:44,555 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:44,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:56:44,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-21 13:56:44,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-11-21 13:56:44,560 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) [2022-11-21 13:56:44,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 70 transitions. [2022-11-21 13:56:44,561 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 70 transitions. Word has length 3 [2022-11-21 13:56:44,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:44,562 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 70 transitions. [2022-11-21 13:56:44,562 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) [2022-11-21 13:56:44,562 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 70 transitions. [2022-11-21 13:56:44,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-21 13:56:44,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:44,563 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-21 13:56:44,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:56:44,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:56:44,775 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:56:44,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:44,775 INFO L85 PathProgramCache]: Analyzing trace with hash 14181590, now seen corresponding path program 1 times [2022-11-21 13:56:44,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:56:44,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [531331517] [2022-11-21 13:56:44,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:44,776 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 [2022-11-21 13:56:44,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:56:44,779 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:56:44,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:56:44,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:44,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 13:56:44,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:56:44,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:56:44,924 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 [2022-11-21 13:56:44,956 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 [2022-11-21 13:56:45,020 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 13:56:45,021 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 [2022-11-21 13:56:45,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:45,104 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:56:45,104 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:56:45,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [531331517] [2022-11-21 13:56:45,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [531331517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:45,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:45,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 13:56:45,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749783244] [2022-11-21 13:56:45,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:45,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:56:45,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:56:45,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:56:45,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:56:45,106 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) [2022-11-21 13:56:45,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:45,321 INFO L93 Difference]: Finished difference Result 43 states and 69 transitions. [2022-11-21 13:56:45,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 13:56:45,322 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 [2022-11-21 13:56:45,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:45,323 INFO L225 Difference]: With dead ends: 43 [2022-11-21 13:56:45,323 INFO L226 Difference]: Without dead ends: 43 [2022-11-21 13:56:45,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:56:45,324 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 24 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:45,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 2 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 13:56:45,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-21 13:56:45,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-11-21 13:56:45,328 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) [2022-11-21 13:56:45,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 69 transitions. [2022-11-21 13:56:45,329 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 69 transitions. Word has length 4 [2022-11-21 13:56:45,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:45,329 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 69 transitions. [2022-11-21 13:56:45,330 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) [2022-11-21 13:56:45,330 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 69 transitions. [2022-11-21 13:56:45,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 13:56:45,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:45,330 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-21 13:56:45,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:56:45,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:56:45,531 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:56:45,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:45,531 INFO L85 PathProgramCache]: Analyzing trace with hash 742604810, now seen corresponding path program 1 times [2022-11-21 13:56:45,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:56:45,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [529553471] [2022-11-21 13:56:45,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:45,532 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 [2022-11-21 13:56:45,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:56:45,537 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:56:45,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:56:45,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:45,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 13:56:45,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:56:45,695 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 13:56:45,695 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 [2022-11-21 13:56:45,722 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-21 13:56:45,723 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 [2022-11-21 13:56:45,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:56:45,809 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 [2022-11-21 13:56:45,824 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-21 13:56:45,825 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 [2022-11-21 13:56:45,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:45,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:56:45,853 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:56:45,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [529553471] [2022-11-21 13:56:45,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [529553471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:45,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:45,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 13:56:45,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355917101] [2022-11-21 13:56:45,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:45,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:56:45,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:56:45,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:56:45,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:56:45,855 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) [2022-11-21 13:56:45,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:45,964 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2022-11-21 13:56:45,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:56:45,968 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 [2022-11-21 13:56:45,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:45,969 INFO L225 Difference]: With dead ends: 27 [2022-11-21 13:56:45,969 INFO L226 Difference]: Without dead ends: 27 [2022-11-21 13:56:45,969 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 [2022-11-21 13:56:45,970 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:45,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 0 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:56:45,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-21 13:56:45,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-21 13:56:45,973 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) [2022-11-21 13:56:45,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2022-11-21 13:56:45,973 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 6 [2022-11-21 13:56:45,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:45,974 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2022-11-21 13:56:45,974 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) [2022-11-21 13:56:45,974 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2022-11-21 13:56:45,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-21 13:56:45,975 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:45,975 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:45,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:56:46,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:56:46,184 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:56:46,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:46,184 INFO L85 PathProgramCache]: Analyzing trace with hash -436376638, now seen corresponding path program 1 times [2022-11-21 13:56:46,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:56:46,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [500323290] [2022-11-21 13:56:46,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:46,185 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 [2022-11-21 13:56:46,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:56:46,186 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:56:46,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:56:46,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:46,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 13:56:46,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:56:46,365 INFO L321 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2022-11-21 13:56:46,366 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 [2022-11-21 13:56:46,431 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-21 13:56:46,431 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 [2022-11-21 13:56:46,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:46,588 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:56:46,589 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:56:46,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [500323290] [2022-11-21 13:56:46,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [500323290] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:46,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:46,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 13:56:46,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831050093] [2022-11-21 13:56:46,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:46,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:56:46,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:56:46,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:56:46,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:56:46,591 INFO L87 Difference]: Start difference. First operand 27 states and 37 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) [2022-11-21 13:56:46,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:46,722 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2022-11-21 13:56:46,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 13:56:46,723 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 [2022-11-21 13:56:46,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:46,724 INFO L225 Difference]: With dead ends: 31 [2022-11-21 13:56:46,724 INFO L226 Difference]: Without dead ends: 31 [2022-11-21 13:56:46,724 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 [2022-11-21 13:56:46,725 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:46,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 0 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:56:46,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-21 13:56:46,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2022-11-21 13:56:46,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.8888888888888888) 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) [2022-11-21 13:56:46,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2022-11-21 13:56:46,729 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 9 [2022-11-21 13:56:46,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:46,731 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2022-11-21 13:56:46,731 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) [2022-11-21 13:56:46,731 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2022-11-21 13:56:46,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-21 13:56:46,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:46,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:46,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:56:46,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:56:46,943 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:56:46,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:46,944 INFO L85 PathProgramCache]: Analyzing trace with hash -436376521, now seen corresponding path program 1 times [2022-11-21 13:56:46,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:56:46,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [943003880] [2022-11-21 13:56:46,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:46,945 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 [2022-11-21 13:56:46,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:56:46,946 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:56:46,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:56:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:47,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 13:56:47,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:56:47,046 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 [2022-11-21 13:56:47,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:47,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:56:47,106 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:56:47,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [943003880] [2022-11-21 13:56:47,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [943003880] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:47,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:47,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:56:47,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72472832] [2022-11-21 13:56:47,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:47,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:56:47,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:56:47,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:56:47,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:56:47,108 INFO L87 Difference]: Start difference. First operand 25 states and 34 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) [2022-11-21 13:56:47,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:47,254 INFO L93 Difference]: Finished difference Result 36 states and 49 transitions. [2022-11-21 13:56:47,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 13:56:47,255 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 [2022-11-21 13:56:47,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:47,256 INFO L225 Difference]: With dead ends: 36 [2022-11-21 13:56:47,256 INFO L226 Difference]: Without dead ends: 36 [2022-11-21 13:56:47,256 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 [2022-11-21 13:56:47,257 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 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 [2022-11-21 13:56:47,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:56:47,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-21 13:56:47,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 26. [2022-11-21 13:56:47,261 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) [2022-11-21 13:56:47,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 42 transitions. [2022-11-21 13:56:47,261 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 42 transitions. Word has length 9 [2022-11-21 13:56:47,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:47,262 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 42 transitions. [2022-11-21 13:56:47,262 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) [2022-11-21 13:56:47,262 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 42 transitions. [2022-11-21 13:56:47,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-21 13:56:47,262 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:47,262 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:47,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:56:47,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:56:47,471 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:56:47,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:47,472 INFO L85 PathProgramCache]: Analyzing trace with hash -436376552, now seen corresponding path program 1 times [2022-11-21 13:56:47,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:56:47,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [613558517] [2022-11-21 13:56:47,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:47,472 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 [2022-11-21 13:56:47,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:56:47,474 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:56:47,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:56:47,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:47,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 13:56:47,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:56:47,578 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 [2022-11-21 13:56:47,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:47,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:56:47,611 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:56:47,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [613558517] [2022-11-21 13:56:47,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [613558517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:47,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:47,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:56:47,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641767338] [2022-11-21 13:56:47,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:47,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:56:47,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:56:47,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:56:47,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:56:47,614 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) [2022-11-21 13:56:47,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:47,726 INFO L93 Difference]: Finished difference Result 27 states and 40 transitions. [2022-11-21 13:56:47,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 13:56:47,727 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 [2022-11-21 13:56:47,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:47,727 INFO L225 Difference]: With dead ends: 27 [2022-11-21 13:56:47,727 INFO L226 Difference]: Without dead ends: 27 [2022-11-21 13:56:47,727 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 [2022-11-21 13:56:47,728 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 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 [2022-11-21 13:56:47,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:56:47,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-21 13:56:47,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2022-11-21 13:56:47,730 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) [2022-11-21 13:56:47,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 36 transitions. [2022-11-21 13:56:47,731 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 36 transitions. Word has length 9 [2022-11-21 13:56:47,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:47,731 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 36 transitions. [2022-11-21 13:56:47,731 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) [2022-11-21 13:56:47,731 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 36 transitions. [2022-11-21 13:56:47,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-21 13:56:47,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:47,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:47,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:56:47,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:56:47,937 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:56:47,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:47,938 INFO L85 PathProgramCache]: Analyzing trace with hash -436376579, now seen corresponding path program 1 times [2022-11-21 13:56:47,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:56:47,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1249965330] [2022-11-21 13:56:47,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:47,938 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 [2022-11-21 13:56:47,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:56:47,941 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:56:47,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:56:48,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:48,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-21 13:56:48,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:56:48,152 INFO L321 Elim1Store]: treesize reduction 52, result has 30.7 percent of original size [2022-11-21 13:56:48,152 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 [2022-11-21 13:56:48,196 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-21 13:56:48,197 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 [2022-11-21 13:56:48,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:56:48,375 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-21 13:56:48,375 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 [2022-11-21 13:56:48,425 INFO L321 Elim1Store]: treesize reduction 6, result has 80.6 percent of original size [2022-11-21 13:56:48,425 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 [2022-11-21 13:56:48,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:48,707 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:56:48,707 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:56:48,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1249965330] [2022-11-21 13:56:48,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1249965330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:48,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:48,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:56:48,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278722583] [2022-11-21 13:56:48,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:48,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:56:48,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:56:48,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:56:48,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:56:48,709 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) [2022-11-21 13:56:49,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:49,089 INFO L93 Difference]: Finished difference Result 28 states and 38 transitions. [2022-11-21 13:56:49,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:56:49,090 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 [2022-11-21 13:56:49,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:49,090 INFO L225 Difference]: With dead ends: 28 [2022-11-21 13:56:49,091 INFO L226 Difference]: Without dead ends: 28 [2022-11-21 13:56:49,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:56:49,091 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 32 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:49,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 0 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 13:56:49,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-21 13:56:49,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2022-11-21 13:56:49,094 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) [2022-11-21 13:56:49,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 34 transitions. [2022-11-21 13:56:49,095 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 34 transitions. Word has length 9 [2022-11-21 13:56:49,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:49,095 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 34 transitions. [2022-11-21 13:56:49,095 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) [2022-11-21 13:56:49,095 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 34 transitions. [2022-11-21 13:56:49,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-21 13:56:49,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:49,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:49,109 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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)] Ended with exit code 0 [2022-11-21 13:56:49,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:56:49,307 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:56:49,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:49,308 INFO L85 PathProgramCache]: Analyzing trace with hash -642768909, now seen corresponding path program 1 times [2022-11-21 13:56:49,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:56:49,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [963049550] [2022-11-21 13:56:49,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:49,308 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 [2022-11-21 13:56:49,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:56:49,309 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:56:49,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:56:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:49,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 13:56:49,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:56:49,422 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 [2022-11-21 13:56:49,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:49,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:56:49,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:49,618 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:56:49,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [963049550] [2022-11-21 13:56:49,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [963049550] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:56:49,619 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:56:49,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-11-21 13:56:49,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679558462] [2022-11-21 13:56:49,619 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 13:56:49,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 13:56:49,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:56:49,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 13:56:49,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:56:49,620 INFO L87 Difference]: Start difference. First operand 23 states and 34 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:50,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:50,047 INFO L93 Difference]: Finished difference Result 55 states and 74 transitions. [2022-11-21 13:56:50,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:56:50,048 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 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 [2022-11-21 13:56:50,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:50,049 INFO L225 Difference]: With dead ends: 55 [2022-11-21 13:56:50,049 INFO L226 Difference]: Without dead ends: 55 [2022-11-21 13:56:50,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-11-21 13:56:50,050 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 89 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:50,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 0 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 13:56:50,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-21 13:56:50,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 29. [2022-11-21 13:56:50,053 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) [2022-11-21 13:56:50,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 55 transitions. [2022-11-21 13:56:50,053 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 55 transitions. Word has length 10 [2022-11-21 13:56:50,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:50,053 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 55 transitions. [2022-11-21 13:56:50,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:50,053 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 55 transitions. [2022-11-21 13:56:50,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-21 13:56:50,054 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:50,054 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:50,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:56:50,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:56:50,255 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:56:50,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:50,255 INFO L85 PathProgramCache]: Analyzing trace with hash -642768967, now seen corresponding path program 1 times [2022-11-21 13:56:50,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:56:50,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1047062288] [2022-11-21 13:56:50,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:50,255 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 [2022-11-21 13:56:50,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:56:50,256 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:56:50,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:56:50,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:50,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 13:56:50,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:56:50,459 INFO L321 Elim1Store]: treesize reduction 52, result has 30.7 percent of original size [2022-11-21 13:56:50,459 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 [2022-11-21 13:56:50,507 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-21 13:56:50,507 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 [2022-11-21 13:56:50,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:56:50,650 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-21 13:56:50,650 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 [2022-11-21 13:56:50,699 INFO L321 Elim1Store]: treesize reduction 6, result has 80.6 percent of original size [2022-11-21 13:56:50,699 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 [2022-11-21 13:56:51,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:51,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:56:51,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:51,214 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:56:51,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1047062288] [2022-11-21 13:56:51,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1047062288] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:56:51,214 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:56:51,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-21 13:56:51,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834230857] [2022-11-21 13:56:51,214 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 13:56:51,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 13:56:51,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:56:51,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 13:56:51,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-21 13:56:51,215 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) [2022-11-21 13:56:52,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:52,641 INFO L93 Difference]: Finished difference Result 49 states and 65 transitions. [2022-11-21 13:56:52,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 13:56:52,642 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 [2022-11-21 13:56:52,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:52,643 INFO L225 Difference]: With dead ends: 49 [2022-11-21 13:56:52,643 INFO L226 Difference]: Without dead ends: 49 [2022-11-21 13:56:52,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2022-11-21 13:56:52,644 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 69 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:52,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 0 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-21 13:56:52,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-21 13:56:52,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 29. [2022-11-21 13:56:52,647 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) [2022-11-21 13:56:52,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 49 transitions. [2022-11-21 13:56:52,648 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 49 transitions. Word has length 10 [2022-11-21 13:56:52,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:52,648 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 49 transitions. [2022-11-21 13:56:52,648 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) [2022-11-21 13:56:52,649 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 49 transitions. [2022-11-21 13:56:52,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-21 13:56:52,649 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:52,649 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:52,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:56:52,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:56:52,861 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:56:52,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:52,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1548403989, now seen corresponding path program 1 times [2022-11-21 13:56:52,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:56:52,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663595207] [2022-11-21 13:56:52,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:52,862 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 [2022-11-21 13:56:52,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:56:52,864 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:56:52,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:56:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:52,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 13:56:52,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:56:52,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:52,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:56:52,981 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:56:52,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663595207] [2022-11-21 13:56:52,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [663595207] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:52,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:52,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:56:52,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205316804] [2022-11-21 13:56:52,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:52,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:56:52,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:56:52,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:56:52,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:56:52,983 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) [2022-11-21 13:56:53,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:53,044 INFO L93 Difference]: Finished difference Result 29 states and 47 transitions. [2022-11-21 13:56:53,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:56:53,045 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 [2022-11-21 13:56:53,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:53,046 INFO L225 Difference]: With dead ends: 29 [2022-11-21 13:56:53,046 INFO L226 Difference]: Without dead ends: 29 [2022-11-21 13:56:53,047 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 [2022-11-21 13:56:53,047 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 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 [2022-11-21 13:56:53,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:56:53,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-21 13:56:53,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-21 13:56:53,051 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) [2022-11-21 13:56:53,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 47 transitions. [2022-11-21 13:56:53,051 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 47 transitions. Word has length 11 [2022-11-21 13:56:53,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:53,051 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 47 transitions. [2022-11-21 13:56:53,052 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) [2022-11-21 13:56:53,052 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 47 transitions. [2022-11-21 13:56:53,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-21 13:56:53,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:53,053 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:53,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:56:53,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:56:53,259 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:56:53,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:53,259 INFO L85 PathProgramCache]: Analyzing trace with hash 756281292, now seen corresponding path program 1 times [2022-11-21 13:56:53,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:56:53,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1263020634] [2022-11-21 13:56:53,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:53,260 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 [2022-11-21 13:56:53,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:56:53,261 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:56:53,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:56:53,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:53,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-21 13:56:53,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:56:53,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 12 treesize of output 8 [2022-11-21 13:56:53,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:53,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:56:53,495 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:56:53,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1263020634] [2022-11-21 13:56:53,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1263020634] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:53,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:53,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 13:56:53,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669374847] [2022-11-21 13:56:53,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:53,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:56:53,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:56:53,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:56:53,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:56:53,497 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) [2022-11-21 13:56:53,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:53,637 INFO L93 Difference]: Finished difference Result 33 states and 50 transitions. [2022-11-21 13:56:53,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:56:53,637 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 [2022-11-21 13:56:53,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:53,638 INFO L225 Difference]: With dead ends: 33 [2022-11-21 13:56:53,638 INFO L226 Difference]: Without dead ends: 33 [2022-11-21 13:56:53,638 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 [2022-11-21 13:56:53,639 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:53,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:56:53,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-21 13:56:53,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2022-11-21 13:56:53,652 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) [2022-11-21 13:56:53,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 50 transitions. [2022-11-21 13:56:53,654 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 50 transitions. Word has length 12 [2022-11-21 13:56:53,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:53,654 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 50 transitions. [2022-11-21 13:56:53,654 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) [2022-11-21 13:56:53,655 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 50 transitions. [2022-11-21 13:56:53,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-21 13:56:53,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:53,656 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:53,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:56:53,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:56:53,863 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:56:53,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:53,863 INFO L85 PathProgramCache]: Analyzing trace with hash 756281280, now seen corresponding path program 1 times [2022-11-21 13:56:53,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:56:53,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203538641] [2022-11-21 13:56:53,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:53,864 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 [2022-11-21 13:56:53,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:56:53,865 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:56:53,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:56:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:54,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 13:56:54,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:56:54,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:56:54,019 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 [2022-11-21 13:56:54,038 INFO L321 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2022-11-21 13:56:54,038 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 22 treesize of output 24 [2022-11-21 13:56:54,085 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 [2022-11-21 13:56:54,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:54,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:56:54,127 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:56:54,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203538641] [2022-11-21 13:56:54,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1203538641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:54,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:54,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 13:56:54,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087732794] [2022-11-21 13:56:54,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:54,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:56:54,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:56:54,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:56:54,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:56:54,132 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) [2022-11-21 13:56:54,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:54,261 INFO L93 Difference]: Finished difference Result 29 states and 45 transitions. [2022-11-21 13:56:54,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 13:56:54,262 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 [2022-11-21 13:56:54,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:54,262 INFO L225 Difference]: With dead ends: 29 [2022-11-21 13:56:54,263 INFO L226 Difference]: Without dead ends: 29 [2022-11-21 13:56:54,263 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 [2022-11-21 13:56:54,263 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 [2022-11-21 13:56:54,264 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] [2022-11-21 13:56:54,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-21 13:56:54,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-21 13:56:54,266 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) [2022-11-21 13:56:54,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 45 transitions. [2022-11-21 13:56:54,267 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 45 transitions. Word has length 12 [2022-11-21 13:56:54,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:54,267 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 45 transitions. [2022-11-21 13:56:54,267 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) [2022-11-21 13:56:54,268 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 45 transitions. [2022-11-21 13:56:54,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-21 13:56:54,268 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:54,268 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:54,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:56:54,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:56:54,475 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:56:54,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:54,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1969536686, now seen corresponding path program 1 times [2022-11-21 13:56:54,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:56:54,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [358458813] [2022-11-21 13:56:54,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:54,476 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 [2022-11-21 13:56:54,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:56:54,477 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:56:54,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:56:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:54,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-21 13:56:54,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:56:54,716 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-21 13:56:54,716 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 [2022-11-21 13:56:54,723 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 [2022-11-21 13:56:54,828 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-21 13:56:54,829 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 [2022-11-21 13:56:54,863 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 [2022-11-21 13:56:54,943 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 [2022-11-21 13:56:54,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:54,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:56:57,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:57,300 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:56:57,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [358458813] [2022-11-21 13:56:57,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [358458813] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:56:57,301 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:56:57,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-11-21 13:56:57,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929950094] [2022-11-21 13:56:57,301 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 13:56:57,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 13:56:57,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:56:57,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 13:56:57,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=98, Unknown=6, NotChecked=0, Total=132 [2022-11-21 13:56:57,303 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) [2022-11-21 13:56:58,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:58,101 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2022-11-21 13:56:58,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:56:58,102 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 [2022-11-21 13:56:58,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:58,103 INFO L225 Difference]: With dead ends: 29 [2022-11-21 13:56:58,103 INFO L226 Difference]: Without dead ends: 29 [2022-11-21 13:56:58,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=66, Invalid=166, Unknown=8, NotChecked=0, Total=240 [2022-11-21 13:56:58,104 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 22 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:58,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 0 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 106 Invalid, 2 Unknown, 0 Unchecked, 0.5s Time] [2022-11-21 13:56:58,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-21 13:56:58,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-21 13:56:58,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 25 states have (on average 1.72) internal successors, (43), 28 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) [2022-11-21 13:56:58,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2022-11-21 13:56:58,107 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 13 [2022-11-21 13:56:58,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:58,107 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2022-11-21 13:56:58,107 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) [2022-11-21 13:56:58,108 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2022-11-21 13:56:58,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-21 13:56:58,108 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:58,108 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:58,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:56:58,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:56:58,321 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:56:58,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:58,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1763017929, now seen corresponding path program 2 times [2022-11-21 13:56:58,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:56:58,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855278293] [2022-11-21 13:56:58,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 13:56:58,322 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 [2022-11-21 13:56:58,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:56:58,323 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:56:58,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:56:58,451 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 13:56:58,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:56:58,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-21 13:56:58,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:56:58,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:56:58,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:56:58,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:56:58,475 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 [2022-11-21 13:56:58,502 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-21 13:56:58,502 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 [2022-11-21 13:56:58,630 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 13:56:58,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:56:58,631 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:56:58,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855278293] [2022-11-21 13:56:58,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855278293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:58,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:58,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:56:58,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384895353] [2022-11-21 13:56:58,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:58,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:56:58,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:56:58,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:56:58,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:56:58,632 INFO L87 Difference]: Start difference. First operand 29 states and 43 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) [2022-11-21 13:56:58,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:58,734 INFO L93 Difference]: Finished difference Result 27 states and 40 transitions. [2022-11-21 13:56:58,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:56:58,735 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 [2022-11-21 13:56:58,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:58,735 INFO L225 Difference]: With dead ends: 27 [2022-11-21 13:56:58,735 INFO L226 Difference]: Without dead ends: 27 [2022-11-21 13:56:58,736 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 [2022-11-21 13:56:58,736 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 [2022-11-21 13:56:58,737 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] [2022-11-21 13:56:58,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-21 13:56:58,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-21 13:56:58,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 26 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:58,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 40 transitions. [2022-11-21 13:56:58,740 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 40 transitions. Word has length 13 [2022-11-21 13:56:58,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:58,740 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 40 transitions. [2022-11-21 13:56:58,755 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) [2022-11-21 13:56:58,756 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 40 transitions. [2022-11-21 13:56:58,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-21 13:56:58,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:58,756 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:58,772 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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)] Ended with exit code 0 [2022-11-21 13:56:58,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:56:58,968 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:56:58,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:58,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1763017987, now seen corresponding path program 2 times [2022-11-21 13:56:58,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:56:58,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1724087964] [2022-11-21 13:56:58,969 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 13:56:58,969 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 [2022-11-21 13:56:58,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:56:58,970 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:56:58,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:56:59,125 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 13:56:59,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:56:59,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-21 13:56:59,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:56:59,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:56:59,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:56:59,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:56:59,156 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 [2022-11-21 13:56:59,202 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-21 13:56:59,203 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 [2022-11-21 13:56:59,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:56:59,271 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 [2022-11-21 13:56:59,438 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:59,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:56:59,765 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:59,765 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:56:59,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1724087964] [2022-11-21 13:56:59,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1724087964] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:56:59,766 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:56:59,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2022-11-21 13:56:59,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940517686] [2022-11-21 13:56:59,766 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 13:56:59,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 13:56:59,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:56:59,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 13:56:59,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2022-11-21 13:56:59,768 INFO L87 Difference]: Start difference. First operand 27 states and 40 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) [2022-11-21 13:57:00,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:57:00,977 INFO L93 Difference]: Finished difference Result 60 states and 80 transitions. [2022-11-21 13:57:00,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 13:57:00,978 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 [2022-11-21 13:57:00,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:57:00,979 INFO L225 Difference]: With dead ends: 60 [2022-11-21 13:57:00,979 INFO L226 Difference]: Without dead ends: 60 [2022-11-21 13:57:00,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=225, Invalid=477, Unknown=0, NotChecked=0, Total=702 [2022-11-21 13:57:00,980 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 116 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-21 13:57:00,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 0 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-21 13:57:00,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-21 13:57:00,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 35. [2022-11-21 13:57:00,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 32 states have (on average 1.875) internal successors, (60), 34 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:57:00,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 60 transitions. [2022-11-21 13:57:00,983 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 60 transitions. Word has length 13 [2022-11-21 13:57:00,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:57:00,984 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 60 transitions. [2022-11-21 13:57:00,984 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) [2022-11-21 13:57:00,984 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 60 transitions. [2022-11-21 13:57:00,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-21 13:57:00,985 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:57:00,985 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:57:00,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:57:01,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:57:01,194 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:57:01,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:57:01,195 INFO L85 PathProgramCache]: Analyzing trace with hash 925748236, now seen corresponding path program 2 times [2022-11-21 13:57:01,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:57:01,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [756341896] [2022-11-21 13:57:01,195 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 13:57:01,195 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 [2022-11-21 13:57:01,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:57:01,197 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:57:01,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:57:01,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 13:57:01,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:57:01,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-21 13:57:01,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:57:01,487 INFO L321 Elim1Store]: treesize reduction 118, result has 24.4 percent of original size [2022-11-21 13:57:01,488 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 [2022-11-21 13:57:01,512 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 [2022-11-21 13:57:01,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:57:01,757 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-21 13:57:01,758 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 [2022-11-21 13:57:01,818 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 [2022-11-21 13:57:01,995 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 [2022-11-21 13:57:02,756 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 [2022-11-21 13:57:03,148 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 [2022-11-21 13:57:03,385 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:57:03,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:57:04,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:57:04,117 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:57:04,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [756341896] [2022-11-21 13:57:04,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [756341896] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:57:04,117 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:57:04,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-21 13:57:04,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736653866] [2022-11-21 13:57:04,117 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 13:57:04,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 13:57:04,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:57:04,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 13:57:04,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=146, Unknown=2, NotChecked=0, Total=182 [2022-11-21 13:57:04,118 INFO L87 Difference]: Start difference. First operand 35 states and 60 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) [2022-11-21 13:57:07,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:57:09,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:57:12,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:57:15,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-21 13:57:15,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:57:15,789 INFO L93 Difference]: Finished difference Result 35 states and 58 transitions. [2022-11-21 13:57:15,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 13:57:15,789 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 [2022-11-21 13:57:15,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:57:15,790 INFO L225 Difference]: With dead ends: 35 [2022-11-21 13:57:15,790 INFO L226 Difference]: Without dead ends: 35 [2022-11-21 13:57:15,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=108, Invalid=310, Unknown=2, NotChecked=0, Total=420 [2022-11-21 13:57:15,791 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 21 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-21 13:57:15,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 171 Invalid, 6 Unknown, 0 Unchecked, 9.4s Time] [2022-11-21 13:57:15,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-21 13:57:15,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-11-21 13:57:15,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 32 states have (on average 1.8125) internal successors, (58), 34 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) [2022-11-21 13:57:15,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 58 transitions. [2022-11-21 13:57:15,794 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 58 transitions. Word has length 14 [2022-11-21 13:57:15,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:57:15,795 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 58 transitions. [2022-11-21 13:57:15,795 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) [2022-11-21 13:57:15,795 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 58 transitions. [2022-11-21 13:57:15,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-21 13:57:15,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:57:15,796 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:57:15,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:57:16,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:57:16,008 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:57:16,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:57:16,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1366922642, now seen corresponding path program 3 times [2022-11-21 13:57:16,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:57:16,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1134061366] [2022-11-21 13:57:16,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 13:57:16,009 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 [2022-11-21 13:57:16,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:57:16,010 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:57:16,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:57:16,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-21 13:57:16,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:57:16,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-21 13:57:16,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:57:16,341 INFO L321 Elim1Store]: treesize reduction 118, result has 24.4 percent of original size [2022-11-21 13:57:16,342 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 [2022-11-21 13:57:16,356 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 [2022-11-21 13:57:16,556 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 [2022-11-21 13:57:16,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:57:16,622 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-21 13:57:16,622 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 [2022-11-21 13:57:16,837 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 [2022-11-21 13:57:18,373 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 [2022-11-21 13:57:18,736 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 [2022-11-21 13:57:18,893 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 [2022-11-21 13:57:19,116 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:57:19,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:57:19,978 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:57:19,978 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:57:19,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1134061366] [2022-11-21 13:57:19,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1134061366] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:57:19,979 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:57:19,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-11-21 13:57:19,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567518700] [2022-11-21 13:57:19,979 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 13:57:19,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 13:57:19,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:57:19,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 13:57:19,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-21 13:57:19,980 INFO L87 Difference]: Start difference. First operand 35 states and 58 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) [2022-11-21 13:57:22,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:57:24,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:57:26,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:57:27,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:57:27,597 INFO L93 Difference]: Finished difference Result 35 states and 56 transitions. [2022-11-21 13:57:27,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 13:57:27,599 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 [2022-11-21 13:57:27,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:57:27,599 INFO L225 Difference]: With dead ends: 35 [2022-11-21 13:57:27,599 INFO L226 Difference]: Without dead ends: 35 [2022-11-21 13:57:27,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2022-11-21 13:57:27,600 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:57:27,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 0 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 183 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2022-11-21 13:57:27,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-21 13:57:27,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-11-21 13:57:27,603 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) [2022-11-21 13:57:27,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2022-11-21 13:57:27,603 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 15 [2022-11-21 13:57:27,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:57:27,604 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2022-11-21 13:57:27,604 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) [2022-11-21 13:57:27,604 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2022-11-21 13:57:27,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-21 13:57:27,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:57:27,605 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:57:27,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-21 13:57:27,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:57:27,823 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:57:27,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:57:27,823 INFO L85 PathProgramCache]: Analyzing trace with hash 574724172, now seen corresponding path program 4 times [2022-11-21 13:57:27,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:57:27,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2085572347] [2022-11-21 13:57:27,824 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 13:57:27,824 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 [2022-11-21 13:57:27,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:57:27,825 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:57:27,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:57:28,045 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 13:57:28,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:57:28,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-21 13:57:28,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:57:28,112 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-21 13:57:28,112 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 [2022-11-21 13:57:28,121 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 [2022-11-21 13:57:28,212 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-21 13:57:28,212 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 [2022-11-21 13:57:28,245 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 [2022-11-21 13:57:28,311 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 [2022-11-21 13:57:28,365 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 [2022-11-21 13:57:28,414 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 [2022-11-21 13:57:28,456 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 [2022-11-21 13:57:28,495 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:57:28,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:57:28,744 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_339 (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_339) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv4 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|))) (_ bv0 8)))) is different from false [2022-11-21 13:57:31,026 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-11-21 13:57:31,027 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:57:31,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2085572347] [2022-11-21 13:57:31,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2085572347] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:57:31,027 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:57:31,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-21 13:57:31,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370269345] [2022-11-21 13:57:31,028 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 13:57:31,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 13:57:31,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:57:31,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 13:57:31,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=210, Unknown=24, NotChecked=30, Total=306 [2022-11-21 13:57:31,029 INFO L87 Difference]: Start difference. First operand 35 states and 56 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) [2022-11-21 13:57:34,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-21 13:57:34,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:57:34,385 INFO L93 Difference]: Finished difference Result 35 states and 54 transitions. [2022-11-21 13:57:34,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 13:57:34,385 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 [2022-11-21 13:57:34,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:57:34,386 INFO L225 Difference]: With dead ends: 35 [2022-11-21 13:57:34,386 INFO L226 Difference]: Without dead ends: 35 [2022-11-21 13:57:34,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=126, Invalid=448, Unknown=30, NotChecked=46, Total=650 [2022-11-21 13:57:34,386 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 42 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-21 13:57:34,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 0 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 182 Invalid, 4 Unknown, 24 Unchecked, 2.7s Time] [2022-11-21 13:57:34,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-21 13:57:34,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-11-21 13:57:34,389 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) [2022-11-21 13:57:34,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 54 transitions. [2022-11-21 13:57:34,389 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 54 transitions. Word has length 16 [2022-11-21 13:57:34,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:57:34,389 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 54 transitions. [2022-11-21 13:57:34,390 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) [2022-11-21 13:57:34,390 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 54 transitions. [2022-11-21 13:57:34,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-21 13:57:34,390 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:57:34,390 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:57:34,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:57:34,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:57:34,599 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:57:34,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:57:34,600 INFO L85 PathProgramCache]: Analyzing trace with hash 636233262, now seen corresponding path program 5 times [2022-11-21 13:57:34,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:57:34,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [627657332] [2022-11-21 13:57:34,600 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 13:57:34,600 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 [2022-11-21 13:57:34,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:57:34,601 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:57:34,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:57:34,805 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-21 13:57:34,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:57:34,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-21 13:57:34,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:57:34,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:57:34,832 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 [2022-11-21 13:57:34,906 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-21 13:57:34,906 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 [2022-11-21 13:57:34,920 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 [2022-11-21 13:57:35,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:57:35,130 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-21 13:57:35,130 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 [2022-11-21 13:57:35,191 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 13:57:35,191 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 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-21 13:57:35,380 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 [2022-11-21 13:57:36,873 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 [2022-11-21 13:57:37,044 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 [2022-11-21 13:57:37,238 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 [2022-11-21 13:57:37,479 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 [2022-11-21 13:57:37,614 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 [2022-11-21 13:57:37,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-21 13:57:37,695 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:57:37,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:57:38,916 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:57:38,916 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:57:38,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [627657332] [2022-11-21 13:57:38,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [627657332] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:57:38,916 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:57:38,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-21 13:57:38,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293867690] [2022-11-21 13:57:38,917 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 13:57:38,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 13:57:38,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:57:38,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 13:57:38,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=326, Unknown=6, NotChecked=0, Total=380 [2022-11-21 13:57:38,918 INFO L87 Difference]: Start difference. First operand 35 states and 54 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) [2022-11-21 13:57:41,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-11-21 13:57:43,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:57:51,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:57:54,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:57:57,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:58:01,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:58:01,712 INFO L93 Difference]: Finished difference Result 36 states and 53 transitions. [2022-11-21 13:58:01,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 13:58:01,713 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 [2022-11-21 13:58:01,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:58:01,713 INFO L225 Difference]: With dead ends: 36 [2022-11-21 13:58:01,714 INFO L226 Difference]: Without dead ends: 36 [2022-11-21 13:58:01,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=164, Invalid=815, Unknown=13, NotChecked=0, Total=992 [2022-11-21 13:58:01,715 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 32 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 28 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2022-11-21 13:58:01,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 0 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 365 Invalid, 8 Unknown, 0 Unchecked, 12.5s Time] [2022-11-21 13:58:01,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-21 13:58:01,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2022-11-21 13:58:01,718 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) [2022-11-21 13:58:01,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 52 transitions. [2022-11-21 13:58:01,718 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 52 transitions. Word has length 17 [2022-11-21 13:58:01,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:58:01,719 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 52 transitions. [2022-11-21 13:58:01,719 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) [2022-11-21 13:58:01,719 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 52 transitions. [2022-11-21 13:58:01,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-21 13:58:01,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:58:01,720 INFO L195 NwaCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:58:01,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:58:01,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:58:01,933 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:58:01,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:58:01,934 INFO L85 PathProgramCache]: Analyzing trace with hash -591918595, now seen corresponding path program 3 times [2022-11-21 13:58:01,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:58:01,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1308633089] [2022-11-21 13:58:01,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 13:58:01,934 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 [2022-11-21 13:58:01,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:58:01,935 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:58:01,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:58:02,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-21 13:58:02,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:58:02,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-21 13:58:02,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:58:02,252 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-21 13:58:02,253 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 2 case distinctions, treesize of input 15 treesize of output 30 [2022-11-21 13:58:02,304 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 13:58:02,304 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 [2022-11-21 13:58:02,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:58:02,456 INFO L321 Elim1Store]: treesize reduction 140, result has 25.9 percent of original size [2022-11-21 13:58:02,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 45 treesize of output 81 [2022-11-21 13:58:02,784 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-21 13:58:02,784 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 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-21 13:58:02,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:58:02,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:58:02,880 INFO L321 Elim1Store]: treesize reduction 24, result has 41.5 percent of original size [2022-11-21 13:58:02,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 45 [2022-11-21 13:58:03,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 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 [2022-11-21 13:58:03,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 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 [2022-11-21 13:58:03,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 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 [2022-11-21 13:58:03,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 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 [2022-11-21 13:58:03,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 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 [2022-11-21 13:58:03,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 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 [2022-11-21 13:58:03,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 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 [2022-11-21 13:58:03,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 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 [2022-11-21 13:58:03,890 INFO L321 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2022-11-21 13:58:03,890 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 [2022-11-21 13:58:04,007 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-21 13:58:04,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:58:04,291 WARN L837 $PredicateComparison]: unable to prove that (forall ((|thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1| (_ BitVec 32)) (v_ArrVal_419 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= (_ bv0 8) ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_419) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| |thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|)))) (bvult (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv1 32) |thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|) (select |c_#length| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|)) (not (bvult (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset| |thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|) (select |c_#length| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base|))))) is different from false [2022-11-21 13:58:09,472 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 14 not checked. [2022-11-21 13:58:09,472 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:58:09,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1308633089] [2022-11-21 13:58:09,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1308633089] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:58:09,472 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:58:09,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2022-11-21 13:58:09,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355269686] [2022-11-21 13:58:09,472 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 13:58:09,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-21 13:58:09,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:58:09,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-21 13:58:09,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=4, NotChecked=24, Total=210 [2022-11-21 13:58:09,474 INFO L87 Difference]: Start difference. First operand 35 states and 52 transitions. Second operand has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:58:19,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:58:19,285 INFO L93 Difference]: Finished difference Result 33 states and 49 transitions. [2022-11-21 13:58:19,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:58:19,288 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 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 [2022-11-21 13:58:19,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:58:19,288 INFO L225 Difference]: With dead ends: 33 [2022-11-21 13:58:19,289 INFO L226 Difference]: Without dead ends: 33 [2022-11-21 13:58:19,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=4, NotChecked=32, Total=342 [2022-11-21 13:58:19,290 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 49 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-21 13:58:19,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 0 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 58 Invalid, 0 Unknown, 15 Unchecked, 1.6s Time] [2022-11-21 13:58:19,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-21 13:58:19,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2022-11-21 13:58:19,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 28 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) [2022-11-21 13:58:19,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2022-11-21 13:58:19,293 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 17 [2022-11-21 13:58:19,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:58:19,293 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2022-11-21 13:58:19,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:58:19,294 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2022-11-21 13:58:19,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-21 13:58:19,295 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:58:19,295 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:58:19,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:58:19,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:58:19,499 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:58:19,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:58:19,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1751952244, now seen corresponding path program 6 times [2022-11-21 13:58:19,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:58:19,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [640447391] [2022-11-21 13:58:19,500 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-21 13:58:19,500 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 [2022-11-21 13:58:19,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:58:19,501 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:58:19,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:58:19,743 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-21 13:58:19,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:58:19,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-21 13:58:19,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:58:19,818 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-21 13:58:19,818 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 [2022-11-21 13:58:19,827 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 [2022-11-21 13:58:19,927 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 [2022-11-21 13:58:19,963 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-21 13:58:19,963 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 [2022-11-21 13:58:20,021 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 [2022-11-21 13:58:20,161 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 [2022-11-21 13:58:20,238 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 [2022-11-21 13:58:20,309 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 [2022-11-21 13:58:20,386 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 [2022-11-21 13:58:20,472 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 [2022-11-21 13:58:20,561 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 [2022-11-21 13:58:20,648 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:58:20,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:58:21,432 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base|))) (or (forall ((v_ArrVal_458 (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_458) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv4 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|))) (_ bv0 8)))) (not (bvult (bvadd (_ bv4 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|) .cse0)) (not (bvult (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset| (_ bv3 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|) .cse0)))) is different from false [2022-11-21 13:58:24,771 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 7 times theorem prover too weak. 0 trivial. 6 not checked. [2022-11-21 13:58:24,771 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:58:24,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [640447391] [2022-11-21 13:58:24,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [640447391] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:58:24,772 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:58:24,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2022-11-21 13:58:24,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371614350] [2022-11-21 13:58:24,772 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 13:58:24,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-21 13:58:24,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:58:24,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-21 13:58:24,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=336, Unknown=23, NotChecked=38, Total=462 [2022-11-21 13:58:24,773 INFO L87 Difference]: Start difference. First operand 29 states and 39 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) [2022-11-21 13:58:26,858 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#length| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base|))) (let ((.cse0 (not (bvult (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset| (_ bv1 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|) .cse1))) (.cse3 (not (bvult (bvadd (_ bv2 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|) .cse1))) (.cse2 (not (bvult (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset| (_ bv5 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|) .cse1))) (.cse5 (not (bvult (bvadd (_ bv4 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|) .cse1))) (.cse4 (not (bvult (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset| (_ bv3 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|) .cse1)))) (and (= (bvadd (select |c_#valid| (_ bv3 32)) (_ bv1 1)) (_ bv0 1)) (or .cse0 (not (bvult (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|) .cse1)) (forall ((v_ArrVal_458 (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_458) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv1 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|))) (_ bv0 8))))) (= (select (select |c_#memory_int| (_ bv3 32)) (_ bv6 32)) ((_ sign_extend 24) (_ bv116 8))) (not (= (_ bv3 32) |c_ULTIMATE.start_main_~#t2~0#1.base|)) (not (= (_ bv3 32) c_~v~0.base)) (= c_~v~0.offset (_ bv0 32)) (or (not (bvult (bvadd (_ bv6 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|) .cse1)) (forall ((v_ArrVal_458 (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_458) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv6 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|)))))) .cse2) (= (select |c_#length| c_~v~0.base) (_ bv8 32)) (exists ((|ULTIMATE.start_main_~#t1~0#1.base| (_ BitVec 32))) (and (not (= |ULTIMATE.start_main_~#t1~0#1.base| |c_ULTIMATE.start_main_~#t2~0#1.base|)) (not (= |ULTIMATE.start_main_~#t1~0#1.base| (_ bv3 32))) (= (_ bv0 1) (bvadd (select |c_#valid| |ULTIMATE.start_main_~#t1~0#1.base|) (_ bv1 1))))) (or .cse0 .cse3 (forall ((v_ArrVal_458 (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_458) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv2 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|))))))) (or (forall ((v_ArrVal_458 (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_458) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv3 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|))) (_ bv0 8)))) .cse3 .cse4) (or (forall ((v_ArrVal_458 (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_458) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv5 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|))) (_ bv0 8)))) .cse5 .cse2) (or (forall ((v_ArrVal_458 (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_458) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv4 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|))) (_ bv0 8)))) .cse5 .cse4)))) is different from false [2022-11-21 13:58:26,907 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse5 (select |c_#length| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base|))) (let ((.cse0 (not (bvult (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset| (_ bv1 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|) .cse5))) (.cse2 (not (bvult (bvadd (_ bv2 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|) .cse5))) (.cse1 (not (bvult (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|) .cse5))) (.cse4 (not (bvult (bvadd (_ bv4 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|) .cse5))) (.cse3 (not (bvult (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset| (_ bv3 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|) .cse5)))) (and (or .cse0 .cse1 (forall ((v_ArrVal_458 (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_458) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv1 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|))) (_ bv0 8))))) (or .cse0 .cse2 (forall ((v_ArrVal_458 (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_458) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv2 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|))))))) (or (forall ((v_ArrVal_458 (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_458) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv3 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|))) (_ bv0 8)))) .cse2 .cse3) (or (forall ((v_ArrVal_458 (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_458) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv5 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|))) (_ bv0 8)))) .cse4 (not (bvult (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset| (_ bv5 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|) .cse5))) (or (not (= ((_ extract 7 0) (select (select |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|))) (_ bv0 8))) .cse1) (or (forall ((v_ArrVal_458 (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_458) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv4 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|))) (_ bv0 8)))) .cse4 .cse3)))) is different from false [2022-11-21 13:58:29,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:58:29,432 INFO L93 Difference]: Finished difference Result 47 states and 69 transitions. [2022-11-21 13:58:29,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-21 13:58:29,434 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 [2022-11-21 13:58:29,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:58:29,434 INFO L225 Difference]: With dead ends: 47 [2022-11-21 13:58:29,434 INFO L226 Difference]: Without dead ends: 47 [2022-11-21 13:58:29,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=206, Invalid=879, Unknown=49, NotChecked=198, Total=1332 [2022-11-21 13:58:29,435 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 47 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 37 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:58:29,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 0 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 281 Invalid, 3 Unknown, 27 Unchecked, 1.3s Time] [2022-11-21 13:58:29,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-21 13:58:29,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2022-11-21 13:58:29,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 43 states have (on average 1.5116279069767442) internal successors, (65), 44 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) [2022-11-21 13:58:29,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 65 transitions. [2022-11-21 13:58:29,438 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 65 transitions. Word has length 18 [2022-11-21 13:58:29,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:58:29,438 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 65 transitions. [2022-11-21 13:58:29,438 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) [2022-11-21 13:58:29,438 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 65 transitions. [2022-11-21 13:58:29,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-21 13:58:29,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:58:29,439 INFO L195 NwaCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:58:29,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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)] Ended with exit code 0 [2022-11-21 13:58:29,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:58:29,652 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-21 13:58:29,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:58:29,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1523708398, now seen corresponding path program 7 times [2022-11-21 13:58:29,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:58:29,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1354456356] [2022-11-21 13:58:29,653 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-21 13:58:29,653 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 [2022-11-21 13:58:29,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:58:29,654 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:58:29,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:58:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:58:29,902 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:58:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:58:30,134 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-21 13:58:30,135 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 13:58:30,136 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK (25 of 26 remaining) [2022-11-21 13:58:30,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE (24 of 26 remaining) [2022-11-21 13:58:30,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE (23 of 26 remaining) [2022-11-21 13:58:30,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (22 of 26 remaining) [2022-11-21 13:58:30,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE (21 of 26 remaining) [2022-11-21 13:58:30,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 26 remaining) [2022-11-21 13:58:30,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 26 remaining) [2022-11-21 13:58:30,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 26 remaining) [2022-11-21 13:58:30,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 26 remaining) [2022-11-21 13:58:30,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 26 remaining) [2022-11-21 13:58:30,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 26 remaining) [2022-11-21 13:58:30,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 26 remaining) [2022-11-21 13:58:30,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 26 remaining) [2022-11-21 13:58:30,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 26 remaining) [2022-11-21 13:58:30,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 26 remaining) [2022-11-21 13:58:30,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 26 remaining) [2022-11-21 13:58:30,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 26 remaining) [2022-11-21 13:58:30,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (8 of 26 remaining) [2022-11-21 13:58:30,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 26 remaining) [2022-11-21 13:58:30,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 26 remaining) [2022-11-21 13:58:30,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE (5 of 26 remaining) [2022-11-21 13:58:30,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE (4 of 26 remaining) [2022-11-21 13:58:30,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (3 of 26 remaining) [2022-11-21 13:58:30,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE (2 of 26 remaining) [2022-11-21 13:58:30,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 26 remaining) [2022-11-21 13:58:30,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 26 remaining) [2022-11-21 13:58:30,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:58:30,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:58:30,343 INFO L444 BasicCegarLoop]: Path program histogram: [7, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:58:30,348 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-21 13:58:30,349 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 13:58:30,361 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:58:30,366 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:58:30,366 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:58:30,366 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:58:30,367 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:58:30,369 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:58:30,371 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:58:30,371 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:58:30,371 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:58:30,372 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:58:30,373 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:58:30,378 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:58:30,379 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:58:30,379 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:58:30,379 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:58:30,379 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:58:30,380 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:58:30,380 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:58:30,380 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:58:30,380 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:58:30,381 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:58:30,386 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:58:30,386 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:58:30,387 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:58:30,387 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:58:30,387 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:58:30,387 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:58:30,387 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:58:30,388 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:58:30,388 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:58:30,388 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:58:30,388 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:58:30,388 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:58:30,389 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled [2022-11-21 13:58:30,389 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:58:30,389 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:58:30,389 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:58:30,389 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled [2022-11-21 13:58:30,390 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:58:30,390 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled [2022-11-21 13:58:30,390 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:58:30,390 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:58:30,390 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:58:30,390 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled [2022-11-21 13:58:30,391 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:58:30,391 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled [2022-11-21 13:58:30,391 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:58:30,391 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-21 13:58:30,391 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-21 13:58:30,392 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled [2022-11-21 13:58:30,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:58:30 BasicIcfg [2022-11-21 13:58:30,420 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 13:58:30,421 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 13:58:30,421 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 13:58:30,421 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 13:58:30,422 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:56:27" (3/4) ... [2022-11-21 13:58:30,424 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-21 13:58:30,425 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 13:58:30,425 INFO L158 Benchmark]: Toolchain (without parser) took 124928.54ms. Allocated memory was 71.3MB in the beginning and 111.1MB in the end (delta: 39.8MB). Free memory was 46.8MB in the beginning and 40.7MB in the end (delta: 6.1MB). Peak memory consumption was 47.7MB. Max. memory is 16.1GB. [2022-11-21 13:58:30,425 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 71.3MB. Free memory is still 48.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 13:58:30,426 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1113.56ms. Allocated memory was 71.3MB in the beginning and 92.3MB in the end (delta: 21.0MB). Free memory was 46.6MB in the beginning and 51.7MB in the end (delta: -5.1MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. [2022-11-21 13:58:30,426 INFO L158 Benchmark]: Boogie Procedure Inliner took 93.46ms. Allocated memory is still 92.3MB. Free memory was 51.7MB in the beginning and 49.0MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 13:58:30,426 INFO L158 Benchmark]: Boogie Preprocessor took 38.35ms. Allocated memory is still 92.3MB. Free memory was 49.0MB in the beginning and 47.5MB in the end (delta: 1.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-21 13:58:30,429 INFO L158 Benchmark]: RCFGBuilder took 669.15ms. Allocated memory is still 92.3MB. Free memory was 47.5MB in the beginning and 67.1MB in the end (delta: -19.6MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. [2022-11-21 13:58:30,434 INFO L158 Benchmark]: TraceAbstraction took 123003.38ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 66.5MB in the beginning and 41.8MB in the end (delta: 24.7MB). Peak memory consumption was 43.7MB. Max. memory is 16.1GB. [2022-11-21 13:58:30,435 INFO L158 Benchmark]: Witness Printer took 3.70ms. Allocated memory is still 111.1MB. Free memory is still 40.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 13:58:30,436 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 71.3MB. Free memory is still 48.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1113.56ms. Allocated memory was 71.3MB in the beginning and 92.3MB in the end (delta: 21.0MB). Free memory was 46.6MB in the beginning and 51.7MB in the end (delta: -5.1MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 93.46ms. Allocated memory is still 92.3MB. Free memory was 51.7MB in the beginning and 49.0MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 38.35ms. Allocated memory is still 92.3MB. Free memory was 49.0MB in the beginning and 47.5MB in the end (delta: 1.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 669.15ms. Allocated memory is still 92.3MB. Free memory was 47.5MB in the beginning and 67.1MB in the end (delta: -19.6MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. * TraceAbstraction took 123003.38ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 66.5MB in the beginning and 41.8MB in the end (delta: 24.7MB). Peak memory consumption was 43.7MB. Max. memory is 16.1GB. * Witness Printer took 3.70ms. Allocated memory is still 111.1MB. Free memory is still 40.7MB. 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_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_#res#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_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_#res#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_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_#res#1 : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 15.3s, 122 PlacesBefore, 39 PlacesAfterwards, 120 TransitionsBefore, 34 TransitionsAfterwards, 360 CoEnabledTransitionPairs, 6 FixpointIterations, 80 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 10 ConcurrentYvCompositions, 3 ChoiceCompositions, 139 TotalNumberOfCompositions, 464 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 402, independent: 387, independent conditional: 0, independent unconditional: 387, 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: 243, independent: 232, independent conditional: 0, independent unconditional: 232, 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: 243, independent: 231, independent conditional: 0, independent unconditional: 231, 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: 141, independent: 16, independent conditional: 0, independent unconditional: 16, dependent: 124, dependent conditional: 0, dependent unconditional: 124, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 402, independent: 155, independent conditional: 0, independent unconditional: 155, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 243, unknown conditional: 0, unknown unconditional: 243] , Statistics on independence cache: Total cache size (in pairs): 15, Positive cache size: 13, Positive conditional cache size: 0, Positive unconditional cache size: 13, 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)=0, t1={10:0}, t2={17:0}, v={0:0}] [L1123] 0 \read(t1) VAL [\read(t1)=0, arg={0:0}, t1={10:0}, t2={17:0}, v={0:0}] [L1111] 1 v = malloc(sizeof(char) * 8) [L1112] 1 return 0; [L1123] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\read(t1)=0, \result={0:0}, arg={0:0}, arg={0:0}, t1={10:0}, t2={17:0}, v={5:0}] [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)=1, t1={10:0}, t2={17:0}, v={5:0}] [L1125] 0 \read(t2) VAL [\read(t2)=1, \result={0:0}, arg={0:0}, arg={0:0}, t1={10:0}, t2={17:0}, v={5:0}] [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)=1, \result={0:0}, arg={0:0}, arg={0:0}, t1={10:0}, t2={17:0}, v={5:0}] [L1126] EXPR 0 !v || v[0] == 'B' [L1126] EXPR 0 v[0] [L1126] EXPR 0 !v || v[0] == 'B' [L1126] CALL 0 __VERIFIER_assert(!v || v[0] == 'B') [L1107] COND FALSE 0 !(!expression) [L1126] RET 0 __VERIFIER_assert(!v || 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, 153 locations, 26 error locations. Started 1 CEGAR loops. OverallTime: 122.7s, OverallIterations: 24, TraceHistogramMax: 8, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 65.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 15.4s, HoareTripleCheckerStatistics: 24 mSolverCounterUnknown, 743 SdHoareTripleChecker+Valid, 37.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 743 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 36.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 66 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 221 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2250 IncrementalHoareTripleChecker+Invalid, 2561 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 221 mSolverCounterUnsat, 3 mSDtfsCounter, 2250 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 450 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 246 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 621 ImplicationChecksByTransitivity, 50.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=0, InterpolantAutomatonStates: 167, 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, 23 MinimizatonAttempts, 104 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 32.4s InterpolantComputationTime, 263 NumberOfCodeBlocks, 259 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 354 ConstructedInterpolants, 172 QuantifiedInterpolants, 8006 SizeOfPredicates, 113 NumberOfNonLiveVariables, 2418 ConjunctsInSsa, 356 ConjunctsInUnsatCore, 33 InterpolantComputations, 13 PerfectInterpolantSequences, 59/218 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 [2022-11-21 13:58:30,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0218d814-6a4b-4ef9-90eb-6e0e7c0b406d/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample