./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-complex/safestack_relacy.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-complex/safestack_relacy.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1d61eb304445c3cb39dfadfa4748d680ea5f0f4958f8bc176e8bc3c77c47e674 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:00:15,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:00:15,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:00:15,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:00:15,943 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:00:15,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:00:15,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:00:15,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:00:15,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:00:15,951 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:00:15,952 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:00:15,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:00:15,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:00:15,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:00:15,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:00:15,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:00:15,966 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:00:15,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:00:15,969 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:00:15,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:00:15,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:00:15,976 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:00:15,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:00:15,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:00:15,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:00:15,995 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:00:15,995 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:00:15,996 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:00:15,997 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:00:15,998 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:00:15,998 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:00:15,999 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:00:16,000 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:00:16,000 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:00:16,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:00:16,002 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:00:16,003 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:00:16,003 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:00:16,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:00:16,004 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:00:16,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:00:16,006 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-16 11:00:16,033 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:00:16,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:00:16,034 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:00:16,034 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:00:16,035 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:00:16,035 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:00:16,036 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:00:16,036 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:00:16,036 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:00:16,036 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:00:16,036 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:00:16,037 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:00:16,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:00:16,037 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:00:16,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:00:16,037 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 11:00:16,037 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 11:00:16,038 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 11:00:16,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:00:16,038 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 11:00:16,038 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:00:16,039 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:00:16,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:00:16,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:00:16,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:00:16,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:00:16,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:00:16,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:00:16,040 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:00:16,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:00:16,040 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_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d61eb304445c3cb39dfadfa4748d680ea5f0f4958f8bc176e8bc3c77c47e674 [2022-11-16 11:00:16,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:00:16,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:00:16,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:00:16,334 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:00:16,339 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:00:16,340 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread-complex/safestack_relacy.i [2022-11-16 11:00:16,416 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/data/9913961d5/96fcca0dcad74b3cad0886e6208d73ae/FLAG7e9d36b74 [2022-11-16 11:00:17,011 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:00:17,015 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/sv-benchmarks/c/pthread-complex/safestack_relacy.i [2022-11-16 11:00:17,048 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/data/9913961d5/96fcca0dcad74b3cad0886e6208d73ae/FLAG7e9d36b74 [2022-11-16 11:00:17,249 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/data/9913961d5/96fcca0dcad74b3cad0886e6208d73ae [2022-11-16 11:00:17,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:00:17,255 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:00:17,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:00:17,259 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:00:17,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:00:17,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:00:17" (1/1) ... [2022-11-16 11:00:17,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d20aca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:00:17, skipping insertion in model container [2022-11-16 11:00:17,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:00:17" (1/1) ... [2022-11-16 11:00:17,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:00:17,330 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:00:18,281 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/sv-benchmarks/c/pthread-complex/safestack_relacy.i[78860,78873] [2022-11-16 11:00:18,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:00:18,311 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:00:18,399 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/sv-benchmarks/c/pthread-complex/safestack_relacy.i[78860,78873] [2022-11-16 11:00:18,402 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:00:18,534 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:00:18,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:00:18 WrapperNode [2022-11-16 11:00:18,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:00:18,539 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:00:18,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:00:18,541 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:00:18,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:00:18" (1/1) ... [2022-11-16 11:00:18,609 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:00:18" (1/1) ... [2022-11-16 11:00:18,670 INFO L138 Inliner]: procedures = 481, calls = 74, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 283 [2022-11-16 11:00:18,671 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:00:18,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:00:18,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:00:18,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:00:18,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:00:18" (1/1) ... [2022-11-16 11:00:18,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:00:18" (1/1) ... [2022-11-16 11:00:18,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:00:18" (1/1) ... [2022-11-16 11:00:18,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:00:18" (1/1) ... [2022-11-16 11:00:18,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:00:18" (1/1) ... [2022-11-16 11:00:18,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:00:18" (1/1) ... [2022-11-16 11:00:18,743 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:00:18" (1/1) ... [2022-11-16 11:00:18,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:00:18" (1/1) ... [2022-11-16 11:00:18,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:00:18,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:00:18,772 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:00:18,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:00:18,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:00:18" (1/1) ... [2022-11-16 11:00:18,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:00:18,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:00:18,817 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:00:18,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:00:18,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 11:00:18,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:00:18,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 11:00:18,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:00:18,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:00:18,874 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2022-11-16 11:00:18,874 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2022-11-16 11:00:18,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:00:18,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:00:18,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:00:18,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:00:18,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:00:18,876 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:00:19,328 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:00:19,330 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:00:20,106 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:00:20,272 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:00:20,272 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-16 11:00:20,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:00:20 BoogieIcfgContainer [2022-11-16 11:00:20,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:00:20,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:00:20,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:00:20,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:00:20,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:00:17" (1/3) ... [2022-11-16 11:00:20,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5518fda1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:00:20, skipping insertion in model container [2022-11-16 11:00:20,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:00:18" (2/3) ... [2022-11-16 11:00:20,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5518fda1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:00:20, skipping insertion in model container [2022-11-16 11:00:20,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:00:20" (3/3) ... [2022-11-16 11:00:20,290 INFO L112 eAbstractionObserver]: Analyzing ICFG safestack_relacy.i [2022-11-16 11:00:20,319 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:00:20,319 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 68 error locations. [2022-11-16 11:00:20,319 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:00:20,563 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-16 11:00:20,627 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 11:00:20,648 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 339 places, 353 transitions, 714 flow [2022-11-16 11:00:20,654 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 339 places, 353 transitions, 714 flow [2022-11-16 11:00:20,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 339 places, 353 transitions, 714 flow [2022-11-16 11:00:20,860 INFO L130 PetriNetUnfolder]: 19/375 cut-off events. [2022-11-16 11:00:20,860 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:00:20,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 375 events. 19/375 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 860 event pairs, 0 based on Foata normal form. 0/280 useless extension candidates. Maximal degree in co-relation 267. Up to 4 conditions per place. [2022-11-16 11:00:20,885 INFO L119 LiptonReduction]: Number of co-enabled transitions 13440 [2022-11-16 11:00:43,687 INFO L134 LiptonReduction]: Checked pairs total: 26074 [2022-11-16 11:00:43,687 INFO L136 LiptonReduction]: Total number of compositions: 486 [2022-11-16 11:00:43,702 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 106 places, 114 transitions, 236 flow [2022-11-16 11:00:43,802 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1060 states, 599 states have (on average 3.5492487479131887) internal successors, (2126), 1059 states have internal predecessors, (2126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:00:43,822 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:00:43,829 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;@339ec5cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:00:43,829 INFO L358 AbstractCegarLoop]: Starting to check reachability of 124 error locations. [2022-11-16 11:00:43,834 INFO L276 IsEmpty]: Start isEmpty. Operand has 1060 states, 599 states have (on average 3.5492487479131887) internal successors, (2126), 1059 states have internal predecessors, (2126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:00:43,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-16 11:00:43,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:00:43,841 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-16 11:00:43,841 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 121 more)] === [2022-11-16 11:00:43,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:00:43,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1664, now seen corresponding path program 1 times [2022-11-16 11:00:43,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:00:43,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225485739] [2022-11-16 11:00:43,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:00:43,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:00:44,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:44,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:00:44,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:00:44,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225485739] [2022-11-16 11:00:44,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225485739] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:00:44,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:00:44,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-16 11:00:44,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872542302] [2022-11-16 11:00:44,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:00:44,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:00:44,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:00:44,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:00:44,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:00:44,123 INFO L87 Difference]: Start difference. First operand has 1060 states, 599 states have (on average 3.5492487479131887) internal successors, (2126), 1059 states have internal predecessors, (2126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:00:44,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:00:44,370 INFO L93 Difference]: Finished difference Result 692 states and 1383 transitions. [2022-11-16 11:00:44,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:00:44,373 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2022-11-16 11:00:44,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:00:44,401 INFO L225 Difference]: With dead ends: 692 [2022-11-16 11:00:44,401 INFO L226 Difference]: Without dead ends: 689 [2022-11-16 11:00:44,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:00:44,406 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:00:44,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:00:44,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2022-11-16 11:00:44,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 689. [2022-11-16 11:00:44,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 458 states have (on average 3.0087336244541483) internal successors, (1378), 688 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:00:44,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1378 transitions. [2022-11-16 11:00:44,522 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1378 transitions. Word has length 1 [2022-11-16 11:00:44,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:00:44,523 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 1378 transitions. [2022-11-16 11:00:44,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:00:44,524 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1378 transitions. [2022-11-16 11:00:44,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 11:00:44,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:00:44,524 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 11:00:44,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:00:44,525 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 121 more)] === [2022-11-16 11:00:44,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:00:44,526 INFO L85 PathProgramCache]: Analyzing trace with hash 53151, now seen corresponding path program 1 times [2022-11-16 11:00:44,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:00:44,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192230893] [2022-11-16 11:00:44,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:00:44,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:00:44,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:44,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:00:44,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:00:44,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192230893] [2022-11-16 11:00:44,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192230893] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:00:44,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:00:44,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:00:44,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14350756] [2022-11-16 11:00:44,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:00:44,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:00:44,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:00:44,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:00:44,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:00:44,978 INFO L87 Difference]: Start difference. First operand 689 states and 1378 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:00:45,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:00:45,315 INFO L93 Difference]: Finished difference Result 921 states and 1853 transitions. [2022-11-16 11:00:45,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:00:45,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2022-11-16 11:00:45,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:00:45,322 INFO L225 Difference]: With dead ends: 921 [2022-11-16 11:00:45,323 INFO L226 Difference]: Without dead ends: 921 [2022-11-16 11:00:45,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:00:45,325 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 37 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:00:45,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 5 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:00:45,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2022-11-16 11:00:45,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 783. [2022-11-16 11:00:45,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 552 states have (on average 2.9692028985507246) internal successors, (1639), 782 states have internal predecessors, (1639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:00:45,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 1639 transitions. [2022-11-16 11:00:45,373 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 1639 transitions. Word has length 2 [2022-11-16 11:00:45,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:00:45,374 INFO L495 AbstractCegarLoop]: Abstraction has 783 states and 1639 transitions. [2022-11-16 11:00:45,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:00:45,375 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 1639 transitions. [2022-11-16 11:00:45,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 11:00:45,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:00:45,376 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 11:00:45,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:00:45,376 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 121 more)] === [2022-11-16 11:00:45,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:00:45,377 INFO L85 PathProgramCache]: Analyzing trace with hash 53133, now seen corresponding path program 1 times [2022-11-16 11:00:45,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:00:45,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592463474] [2022-11-16 11:00:45,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:00:45,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:00:45,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:45,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:00:45,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:00:45,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592463474] [2022-11-16 11:00:45,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592463474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:00:45,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:00:45,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:00:45,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486361101] [2022-11-16 11:00:45,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:00:45,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:00:45,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:00:45,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:00:45,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:00:45,563 INFO L87 Difference]: Start difference. First operand 783 states and 1639 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:00:45,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:00:45,798 INFO L93 Difference]: Finished difference Result 691 states and 1380 transitions. [2022-11-16 11:00:45,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:00:45,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2022-11-16 11:00:45,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:00:45,804 INFO L225 Difference]: With dead ends: 691 [2022-11-16 11:00:45,804 INFO L226 Difference]: Without dead ends: 691 [2022-11-16 11:00:45,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:00:45,806 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:00:45,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 12 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:00:45,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2022-11-16 11:00:45,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 690. [2022-11-16 11:00:45,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 459 states have (on average 3.0065359477124183) internal successors, (1380), 689 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:00:45,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1380 transitions. [2022-11-16 11:00:45,832 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1380 transitions. Word has length 2 [2022-11-16 11:00:45,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:00:45,833 INFO L495 AbstractCegarLoop]: Abstraction has 690 states and 1380 transitions. [2022-11-16 11:00:45,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:00:45,833 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1380 transitions. [2022-11-16 11:00:45,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 11:00:45,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:00:45,834 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 11:00:45,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:00:45,834 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 121 more)] === [2022-11-16 11:00:45,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:00:45,835 INFO L85 PathProgramCache]: Analyzing trace with hash 53150, now seen corresponding path program 1 times [2022-11-16 11:00:45,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:00:45,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948698840] [2022-11-16 11:00:45,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:00:45,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:00:45,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:45,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:00:45,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:00:45,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948698840] [2022-11-16 11:00:45,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948698840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:00:45,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:00:45,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:00:45,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443866365] [2022-11-16 11:00:45,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:00:45,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:00:45,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:00:45,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:00:45,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:00:45,941 INFO L87 Difference]: Start difference. First operand 690 states and 1380 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:00:46,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:00:46,258 INFO L93 Difference]: Finished difference Result 1263 states and 2543 transitions. [2022-11-16 11:00:46,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:00:46,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2022-11-16 11:00:46,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:00:46,268 INFO L225 Difference]: With dead ends: 1263 [2022-11-16 11:00:46,268 INFO L226 Difference]: Without dead ends: 1263 [2022-11-16 11:00:46,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:00:46,270 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 64 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:00:46,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:00:46,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2022-11-16 11:00:46,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 909. [2022-11-16 11:00:46,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 680 states have (on average 3.1058823529411765) internal successors, (2112), 908 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:00:46,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 2112 transitions. [2022-11-16 11:00:46,316 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 2112 transitions. Word has length 2 [2022-11-16 11:00:46,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:00:46,318 INFO L495 AbstractCegarLoop]: Abstraction has 909 states and 2112 transitions. [2022-11-16 11:00:46,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:00:46,318 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 2112 transitions. [2022-11-16 11:00:46,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 11:00:46,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:00:46,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 11:00:46,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:00:46,321 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 121 more)] === [2022-11-16 11:00:46,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:00:46,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1649248, now seen corresponding path program 1 times [2022-11-16 11:00:46,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:00:46,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914325953] [2022-11-16 11:00:46,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:00:46,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:00:46,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:46,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:00:46,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:00:46,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914325953] [2022-11-16 11:00:46,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914325953] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:00:46,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675131069] [2022-11-16 11:00:46,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:00:46,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:00:46,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:00:46,647 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:00:46,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:00:46,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:46,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 11:00:46,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:00:46,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:00:46,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:00:46,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:00:46,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675131069] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:00:46,930 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:00:46,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2022-11-16 11:00:46,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983029646] [2022-11-16 11:00:46,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:00:46,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:00:46,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:00:46,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:00:46,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:00:46,933 INFO L87 Difference]: Start difference. First operand 909 states and 2112 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 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) [2022-11-16 11:00:47,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:00:47,734 INFO L93 Difference]: Finished difference Result 1573 states and 3481 transitions. [2022-11-16 11:00:47,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:00:47,735 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 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 3 [2022-11-16 11:00:47,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:00:47,744 INFO L225 Difference]: With dead ends: 1573 [2022-11-16 11:00:47,744 INFO L226 Difference]: Without dead ends: 1573 [2022-11-16 11:00:47,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:00:47,746 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 171 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:00:47,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 15 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:00:47,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2022-11-16 11:00:47,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1005. [2022-11-16 11:00:47,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1005 states, 776 states have (on average 3.0463917525773194) internal successors, (2364), 1004 states have internal predecessors, (2364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:00:47,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 2364 transitions. [2022-11-16 11:00:47,788 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 2364 transitions. Word has length 3 [2022-11-16 11:00:47,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:00:47,789 INFO L495 AbstractCegarLoop]: Abstraction has 1005 states and 2364 transitions. [2022-11-16 11:00:47,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 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) [2022-11-16 11:00:47,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 2364 transitions. [2022-11-16 11:00:47,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 11:00:47,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:00:47,790 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 11:00:47,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:00:47,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:00:47,998 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 121 more)] === [2022-11-16 11:00:47,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:00:47,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1649230, now seen corresponding path program 1 times [2022-11-16 11:00:47,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:00:47,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50107708] [2022-11-16 11:00:47,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:00:47,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:00:48,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:48,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:00:48,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:00:48,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50107708] [2022-11-16 11:00:48,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50107708] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:00:48,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489004972] [2022-11-16 11:00:48,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:00:48,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:00:48,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:00:48,161 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:00:48,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:00:48,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:48,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:00:48,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:00:48,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:00:48,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:00:48,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:00:48,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489004972] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:00:48,392 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:00:48,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2022-11-16 11:00:48,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443639539] [2022-11-16 11:00:48,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:00:48,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:00:48,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:00:48,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:00:48,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:00:48,395 INFO L87 Difference]: Start difference. First operand 1005 states and 2364 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 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) [2022-11-16 11:00:48,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:00:48,716 INFO L93 Difference]: Finished difference Result 912 states and 2119 transitions. [2022-11-16 11:00:48,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:00:48,717 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 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 3 [2022-11-16 11:00:48,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:00:48,724 INFO L225 Difference]: With dead ends: 912 [2022-11-16 11:00:48,725 INFO L226 Difference]: Without dead ends: 912 [2022-11-16 11:00:48,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:00:48,728 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:00:48,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:00:48,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2022-11-16 11:00:48,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 912. [2022-11-16 11:00:48,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 683 states have (on average 3.102489019033675) internal successors, (2119), 911 states have internal predecessors, (2119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:00:48,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 2119 transitions. [2022-11-16 11:00:48,765 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 2119 transitions. Word has length 3 [2022-11-16 11:00:48,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:00:48,766 INFO L495 AbstractCegarLoop]: Abstraction has 912 states and 2119 transitions. [2022-11-16 11:00:48,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 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) [2022-11-16 11:00:48,767 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 2119 transitions. [2022-11-16 11:00:48,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 11:00:48,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:00:48,768 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1] [2022-11-16 11:00:48,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:00:48,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 11:00:48,975 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 121 more)] === [2022-11-16 11:00:48,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:00:48,976 INFO L85 PathProgramCache]: Analyzing trace with hash 51128237, now seen corresponding path program 2 times [2022-11-16 11:00:48,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:00:48,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431152487] [2022-11-16 11:00:48,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:00:48,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:00:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:49,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:00:49,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:00:49,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431152487] [2022-11-16 11:00:49,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431152487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:00:49,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:00:49,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:00:49,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690343325] [2022-11-16 11:00:49,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:00:49,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:00:49,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:00:49,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:00:49,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:00:49,233 INFO L87 Difference]: Start difference. First operand 912 states and 2119 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:00:49,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:00:49,485 INFO L93 Difference]: Finished difference Result 966 states and 2141 transitions. [2022-11-16 11:00:49,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:00:49,485 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 4 [2022-11-16 11:00:49,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:00:49,491 INFO L225 Difference]: With dead ends: 966 [2022-11-16 11:00:49,492 INFO L226 Difference]: Without dead ends: 966 [2022-11-16 11:00:49,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:00:49,493 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 33 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:00:49,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 6 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:00:49,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2022-11-16 11:00:49,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 911. [2022-11-16 11:00:49,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 683 states have (on average 3.060029282576867) internal successors, (2090), 910 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:00:49,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 2090 transitions. [2022-11-16 11:00:49,527 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 2090 transitions. Word has length 4 [2022-11-16 11:00:49,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:00:49,528 INFO L495 AbstractCegarLoop]: Abstraction has 911 states and 2090 transitions. [2022-11-16 11:00:49,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:00:49,529 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 2090 transitions. [2022-11-16 11:00:49,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 11:00:49,537 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:00:49,537 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1] [2022-11-16 11:00:49,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:00:49,537 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 121 more)] === [2022-11-16 11:00:49,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:00:49,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1584977333, now seen corresponding path program 1 times [2022-11-16 11:00:49,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:00:49,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38299483] [2022-11-16 11:00:49,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:00:49,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:00:49,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:49,706 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:00:49,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:00:49,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38299483] [2022-11-16 11:00:49,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38299483] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:00:49,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:00:49,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:00:49,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159660184] [2022-11-16 11:00:49,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:00:49,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:00:49,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:00:49,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:00:49,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:00:49,710 INFO L87 Difference]: Start difference. First operand 911 states and 2090 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2022-11-16 11:00:49,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:00:49,982 INFO L93 Difference]: Finished difference Result 1151 states and 2313 transitions. [2022-11-16 11:00:49,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:00:49,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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 5 [2022-11-16 11:00:49,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:00:49,991 INFO L225 Difference]: With dead ends: 1151 [2022-11-16 11:00:49,991 INFO L226 Difference]: Without dead ends: 1151 [2022-11-16 11:00:49,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:00:49,994 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 57 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:00:49,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 7 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:00:50,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2022-11-16 11:00:50,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 952. [2022-11-16 11:00:50,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 725 states have (on average 3.0344827586206895) internal successors, (2200), 951 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:00:50,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 2200 transitions. [2022-11-16 11:00:50,041 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 2200 transitions. Word has length 5 [2022-11-16 11:00:50,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:00:50,041 INFO L495 AbstractCegarLoop]: Abstraction has 952 states and 2200 transitions. [2022-11-16 11:00:50,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2022-11-16 11:00:50,042 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 2200 transitions. [2022-11-16 11:00:50,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 11:00:50,042 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:00:50,042 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1] [2022-11-16 11:00:50,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:00:50,043 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 121 more)] === [2022-11-16 11:00:50,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:00:50,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1584977334, now seen corresponding path program 1 times [2022-11-16 11:00:50,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:00:50,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230841398] [2022-11-16 11:00:50,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:00:50,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:00:50,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:50,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:00:50,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:00:50,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230841398] [2022-11-16 11:00:50,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230841398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:00:50,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:00:50,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:00:50,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777969487] [2022-11-16 11:00:50,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:00:50,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:00:50,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:00:50,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:00:50,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:00:50,312 INFO L87 Difference]: Start difference. First operand 952 states and 2200 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) [2022-11-16 11:00:50,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:00:50,660 INFO L93 Difference]: Finished difference Result 924 states and 2077 transitions. [2022-11-16 11:00:50,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:00:50,663 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 5 [2022-11-16 11:00:50,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:00:50,669 INFO L225 Difference]: With dead ends: 924 [2022-11-16 11:00:50,670 INFO L226 Difference]: Without dead ends: 924 [2022-11-16 11:00:50,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:00:50,672 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 45 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:00:50,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 10 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:00:50,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2022-11-16 11:00:50,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 907. [2022-11-16 11:00:50,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 681 states have (on average 3.0440528634361232) internal successors, (2073), 906 states have internal predecessors, (2073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:00:50,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 2073 transitions. [2022-11-16 11:00:50,710 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 2073 transitions. Word has length 5 [2022-11-16 11:00:50,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:00:50,710 INFO L495 AbstractCegarLoop]: Abstraction has 907 states and 2073 transitions. [2022-11-16 11:00:50,710 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) [2022-11-16 11:00:50,711 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 2073 transitions. [2022-11-16 11:00:50,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 11:00:50,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:00:50,712 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-16 11:00:50,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:00:50,712 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 121 more)] === [2022-11-16 11:00:50,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:00:50,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1889662943, now seen corresponding path program 2 times [2022-11-16 11:00:50,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:00:50,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841111591] [2022-11-16 11:00:50,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:00:50,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:00:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:50,987 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:00:50,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:00:50,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841111591] [2022-11-16 11:00:50,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841111591] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:00:50,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119153751] [2022-11-16 11:00:50,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:00:50,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:00:50,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:00:50,991 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:00:51,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:00:51,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:00:51,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:00:51,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:00:51,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:00:51,230 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:00:51,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:00:51,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119153751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:00:51,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:00:51,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9 [2022-11-16 11:00:51,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710637798] [2022-11-16 11:00:51,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:00:51,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:00:51,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:00:51,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:00:51,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:00:51,233 INFO L87 Difference]: Start difference. First operand 907 states and 2073 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 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) [2022-11-16 11:00:51,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:00:51,393 INFO L93 Difference]: Finished difference Result 904 states and 2067 transitions. [2022-11-16 11:00:51,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:00:51,394 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 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 [2022-11-16 11:00:51,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:00:51,400 INFO L225 Difference]: With dead ends: 904 [2022-11-16 11:00:51,400 INFO L226 Difference]: Without dead ends: 904 [2022-11-16 11:00:51,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:00:51,401 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 146 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:00:51,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 6 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:00:51,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2022-11-16 11:00:51,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 904. [2022-11-16 11:00:51,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 679 states have (on average 3.044182621502209) internal successors, (2067), 903 states have internal predecessors, (2067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:00:51,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 2067 transitions. [2022-11-16 11:00:51,432 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 2067 transitions. Word has length 6 [2022-11-16 11:00:51,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:00:51,433 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 2067 transitions. [2022-11-16 11:00:51,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 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) [2022-11-16 11:00:51,433 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 2067 transitions. [2022-11-16 11:00:51,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 11:00:51,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:00:51,434 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-16 11:00:51,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:00:51,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 11:00:51,641 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 121 more)] === [2022-11-16 11:00:51,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:00:51,641 INFO L85 PathProgramCache]: Analyzing trace with hash -809578531, now seen corresponding path program 1 times [2022-11-16 11:00:51,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:00:51,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059782521] [2022-11-16 11:00:51,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:00:51,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:00:51,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:51,970 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:00:51,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:00:51,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059782521] [2022-11-16 11:00:51,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059782521] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:00:51,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990439278] [2022-11-16 11:00:51,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:00:51,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:00:51,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:00:51,973 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:00:51,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:00:52,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:52,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 11:00:52,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:00:52,271 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:00:52,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:00:52,403 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:00:52,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990439278] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:00:52,403 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:00:52,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2022-11-16 11:00:52,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546016092] [2022-11-16 11:00:52,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:00:52,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:00:52,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:00:52,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:00:52,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:00:52,405 INFO L87 Difference]: Start difference. First operand 904 states and 2067 transitions. Second operand has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:00:53,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:00:53,225 INFO L93 Difference]: Finished difference Result 1058 states and 2279 transitions. [2022-11-16 11:00:53,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:00:53,226 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 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 8 [2022-11-16 11:00:53,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:00:53,232 INFO L225 Difference]: With dead ends: 1058 [2022-11-16 11:00:53,232 INFO L226 Difference]: Without dead ends: 1058 [2022-11-16 11:00:53,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:00:53,233 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 168 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:00:53,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 26 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:00:53,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2022-11-16 11:00:53,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 864. [2022-11-16 11:00:53,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 639 states have (on average 3.0735524256651017) internal successors, (1964), 863 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:00:53,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1964 transitions. [2022-11-16 11:00:53,264 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1964 transitions. Word has length 8 [2022-11-16 11:00:53,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:00:53,265 INFO L495 AbstractCegarLoop]: Abstraction has 864 states and 1964 transitions. [2022-11-16 11:00:53,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:00:53,265 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1964 transitions. [2022-11-16 11:00:53,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 11:00:53,266 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:00:53,266 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-16 11:00:53,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:00:53,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 11:00:53,471 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 121 more)] === [2022-11-16 11:00:53,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:00:53,471 INFO L85 PathProgramCache]: Analyzing trace with hash 672870426, now seen corresponding path program 1 times [2022-11-16 11:00:53,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:00:53,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358636183] [2022-11-16 11:00:53,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:00:53,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:00:53,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:00:53,507 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:00:53,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:00:53,576 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:00:53,582 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:00:53,587 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (123 of 124 remaining) [2022-11-16 11:00:53,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (122 of 124 remaining) [2022-11-16 11:00:53,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (121 of 124 remaining) [2022-11-16 11:00:53,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (120 of 124 remaining) [2022-11-16 11:00:53,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (119 of 124 remaining) [2022-11-16 11:00:53,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (118 of 124 remaining) [2022-11-16 11:00:53,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (117 of 124 remaining) [2022-11-16 11:00:53,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (116 of 124 remaining) [2022-11-16 11:00:53,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (115 of 124 remaining) [2022-11-16 11:00:53,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (114 of 124 remaining) [2022-11-16 11:00:53,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (113 of 124 remaining) [2022-11-16 11:00:53,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (112 of 124 remaining) [2022-11-16 11:00:53,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (111 of 124 remaining) [2022-11-16 11:00:53,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (110 of 124 remaining) [2022-11-16 11:00:53,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (109 of 124 remaining) [2022-11-16 11:00:53,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (108 of 124 remaining) [2022-11-16 11:00:53,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (107 of 124 remaining) [2022-11-16 11:00:53,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (106 of 124 remaining) [2022-11-16 11:00:53,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr32ASSERT_VIOLATIONMEMORY_LEAK (105 of 124 remaining) [2022-11-16 11:00:53,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (104 of 124 remaining) [2022-11-16 11:00:53,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (103 of 124 remaining) [2022-11-16 11:00:53,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (102 of 124 remaining) [2022-11-16 11:00:53,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (101 of 124 remaining) [2022-11-16 11:00:53,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (100 of 124 remaining) [2022-11-16 11:00:53,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (99 of 124 remaining) [2022-11-16 11:00:53,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (98 of 124 remaining) [2022-11-16 11:00:53,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (97 of 124 remaining) [2022-11-16 11:00:53,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (96 of 124 remaining) [2022-11-16 11:00:53,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (95 of 124 remaining) [2022-11-16 11:00:53,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE (94 of 124 remaining) [2022-11-16 11:00:53,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE (93 of 124 remaining) [2022-11-16 11:00:53,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE (92 of 124 remaining) [2022-11-16 11:00:53,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE (91 of 124 remaining) [2022-11-16 11:00:53,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE (90 of 124 remaining) [2022-11-16 11:00:53,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr54REQUIRES_VIOLATIONMEMORY_DEREFERENCE (89 of 124 remaining) [2022-11-16 11:00:53,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (88 of 124 remaining) [2022-11-16 11:00:53,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (87 of 124 remaining) [2022-11-16 11:00:53,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 124 remaining) [2022-11-16 11:00:53,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 124 remaining) [2022-11-16 11:00:53,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 124 remaining) [2022-11-16 11:00:53,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 124 remaining) [2022-11-16 11:00:53,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 124 remaining) [2022-11-16 11:00:53,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 124 remaining) [2022-11-16 11:00:53,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 124 remaining) [2022-11-16 11:00:53,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 124 remaining) [2022-11-16 11:00:53,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr45REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 124 remaining) [2022-11-16 11:00:53,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 124 remaining) [2022-11-16 11:00:53,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 124 remaining) [2022-11-16 11:00:53,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr48REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 124 remaining) [2022-11-16 11:00:53,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 124 remaining) [2022-11-16 11:00:53,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 124 remaining) [2022-11-16 11:00:53,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 124 remaining) [2022-11-16 11:00:53,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 124 remaining) [2022-11-16 11:00:53,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 124 remaining) [2022-11-16 11:00:53,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 124 remaining) [2022-11-16 11:00:53,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 124 remaining) [2022-11-16 11:00:53,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 124 remaining) [2022-11-16 11:00:53,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 124 remaining) [2022-11-16 11:00:53,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 124 remaining) [2022-11-16 11:00:53,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 124 remaining) [2022-11-16 11:00:53,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 124 remaining) [2022-11-16 11:00:53,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 124 remaining) [2022-11-16 11:00:53,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 124 remaining) [2022-11-16 11:00:53,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 124 remaining) [2022-11-16 11:00:53,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 124 remaining) [2022-11-16 11:00:53,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 124 remaining) [2022-11-16 11:00:53,607 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 124 remaining) [2022-11-16 11:00:53,607 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 124 remaining) [2022-11-16 11:00:53,607 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 124 remaining) [2022-11-16 11:00:53,607 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 124 remaining) [2022-11-16 11:00:53,608 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 124 remaining) [2022-11-16 11:00:53,608 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 124 remaining) [2022-11-16 11:00:53,608 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 124 remaining) [2022-11-16 11:00:53,608 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr32ASSERT_VIOLATIONMEMORY_LEAK (50 of 124 remaining) [2022-11-16 11:00:53,608 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 124 remaining) [2022-11-16 11:00:53,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 124 remaining) [2022-11-16 11:00:53,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 124 remaining) [2022-11-16 11:00:53,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 124 remaining) [2022-11-16 11:00:53,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 124 remaining) [2022-11-16 11:00:53,610 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 124 remaining) [2022-11-16 11:00:53,610 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 124 remaining) [2022-11-16 11:00:53,610 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 124 remaining) [2022-11-16 11:00:53,610 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 124 remaining) [2022-11-16 11:00:53,610 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 124 remaining) [2022-11-16 11:00:53,611 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 124 remaining) [2022-11-16 11:00:53,611 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 124 remaining) [2022-11-16 11:00:53,611 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 124 remaining) [2022-11-16 11:00:53,612 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 124 remaining) [2022-11-16 11:00:53,612 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 124 remaining) [2022-11-16 11:00:53,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr54REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 124 remaining) [2022-11-16 11:00:53,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 124 remaining) [2022-11-16 11:00:53,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 124 remaining) [2022-11-16 11:00:53,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 124 remaining) [2022-11-16 11:00:53,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 124 remaining) [2022-11-16 11:00:53,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 124 remaining) [2022-11-16 11:00:53,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 124 remaining) [2022-11-16 11:00:53,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 124 remaining) [2022-11-16 11:00:53,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 124 remaining) [2022-11-16 11:00:53,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 124 remaining) [2022-11-16 11:00:53,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 124 remaining) [2022-11-16 11:00:53,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr45REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 124 remaining) [2022-11-16 11:00:53,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 124 remaining) [2022-11-16 11:00:53,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 124 remaining) [2022-11-16 11:00:53,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr48REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 124 remaining) [2022-11-16 11:00:53,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 124 remaining) [2022-11-16 11:00:53,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 124 remaining) [2022-11-16 11:00:53,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 124 remaining) [2022-11-16 11:00:53,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 124 remaining) [2022-11-16 11:00:53,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 124 remaining) [2022-11-16 11:00:53,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 124 remaining) [2022-11-16 11:00:53,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 124 remaining) [2022-11-16 11:00:53,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 124 remaining) [2022-11-16 11:00:53,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 124 remaining) [2022-11-16 11:00:53,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 124 remaining) [2022-11-16 11:00:53,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 124 remaining) [2022-11-16 11:00:53,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 124 remaining) [2022-11-16 11:00:53,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 124 remaining) [2022-11-16 11:00:53,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 124 remaining) [2022-11-16 11:00:53,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 124 remaining) [2022-11-16 11:00:53,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 124 remaining) [2022-11-16 11:00:53,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 124 remaining) [2022-11-16 11:00:53,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 124 remaining) [2022-11-16 11:00:53,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 124 remaining) [2022-11-16 11:00:53,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 124 remaining) [2022-11-16 11:00:53,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:00:53,623 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:00:53,626 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 11:00:53,626 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 11:00:53,742 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 11:00:53,748 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 11:00:53,749 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 570 places, 595 transitions, 1208 flow [2022-11-16 11:00:53,749 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 570 places, 595 transitions, 1208 flow [2022-11-16 11:00:53,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 570 places, 595 transitions, 1208 flow [2022-11-16 11:00:53,998 INFO L130 PetriNetUnfolder]: 36/667 cut-off events. [2022-11-16 11:00:53,998 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-16 11:00:54,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 681 conditions, 667 events. 36/667 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2562 event pairs, 0 based on Foata normal form. 0/491 useless extension candidates. Maximal degree in co-relation 526. Up to 8 conditions per place. [2022-11-16 11:00:54,082 INFO L119 LiptonReduction]: Number of co-enabled transitions 147360 [2022-11-16 11:01:30,475 INFO L134 LiptonReduction]: Checked pairs total: 342467 [2022-11-16 11:01:30,475 INFO L136 LiptonReduction]: Total number of compositions: 842 [2022-11-16 11:01:30,477 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 190 places, 206 transitions, 430 flow [2022-11-16 11:01:34,297 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 91541 states, 65880 states have (on average 4.317789921068609) internal successors, (284456), 91540 states have internal predecessors, (284456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:01:34,301 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:01:34,301 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;@339ec5cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:01:34,302 INFO L358 AbstractCegarLoop]: Starting to check reachability of 179 error locations. [2022-11-16 11:01:34,679 INFO L276 IsEmpty]: Start isEmpty. Operand has 91541 states, 65880 states have (on average 4.317789921068609) internal successors, (284456), 91540 states have internal predecessors, (284456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:01:34,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-16 11:01:34,680 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:01:34,680 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-16 11:01:34,680 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 176 more)] === [2022-11-16 11:01:34,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:01:34,701 INFO L85 PathProgramCache]: Analyzing trace with hash 3283, now seen corresponding path program 1 times [2022-11-16 11:01:34,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:01:34,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654010886] [2022-11-16 11:01:34,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:01:34,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:01:34,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:34,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:01:34,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:01:34,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654010886] [2022-11-16 11:01:34,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654010886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:01:34,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:01:34,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-16 11:01:34,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564856786] [2022-11-16 11:01:34,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:01:34,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:01:34,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:01:34,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:01:34,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:01:35,103 INFO L87 Difference]: Start difference. First operand has 91541 states, 65880 states have (on average 4.317789921068609) internal successors, (284456), 91540 states have internal predecessors, (284456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:01:36,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:01:36,594 INFO L93 Difference]: Finished difference Result 45265 states and 139300 transitions. [2022-11-16 11:01:36,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:01:36,595 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2022-11-16 11:01:36,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:01:37,268 INFO L225 Difference]: With dead ends: 45265 [2022-11-16 11:01:37,268 INFO L226 Difference]: Without dead ends: 45258 [2022-11-16 11:01:37,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:01:37,272 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:01:37,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:01:37,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45258 states. [2022-11-16 11:01:38,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45258 to 45258. [2022-11-16 11:01:39,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45258 states, 36741 states have (on average 3.790996434500966) internal successors, (139285), 45257 states have internal predecessors, (139285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:01:39,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45258 states to 45258 states and 139285 transitions. [2022-11-16 11:01:39,527 INFO L78 Accepts]: Start accepts. Automaton has 45258 states and 139285 transitions. Word has length 1 [2022-11-16 11:01:39,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:01:39,528 INFO L495 AbstractCegarLoop]: Abstraction has 45258 states and 139285 transitions. [2022-11-16 11:01:39,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:01:39,528 INFO L276 IsEmpty]: Start isEmpty. Operand 45258 states and 139285 transitions. [2022-11-16 11:01:39,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 11:01:39,529 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:01:39,529 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 11:01:39,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:01:39,530 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 176 more)] === [2022-11-16 11:01:39,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:01:39,530 INFO L85 PathProgramCache]: Analyzing trace with hash 105692, now seen corresponding path program 1 times [2022-11-16 11:01:39,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:01:39,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481921696] [2022-11-16 11:01:39,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:01:39,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:01:39,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:39,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:01:39,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:01:39,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481921696] [2022-11-16 11:01:39,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481921696] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:01:39,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:01:39,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:01:39,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128768608] [2022-11-16 11:01:39,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:01:39,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:01:39,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:01:39,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:01:39,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:01:39,627 INFO L87 Difference]: Start difference. First operand 45258 states and 139285 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:01:41,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:01:41,328 INFO L93 Difference]: Finished difference Result 79325 states and 244934 transitions. [2022-11-16 11:01:41,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:01:41,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2022-11-16 11:01:41,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:01:41,930 INFO L225 Difference]: With dead ends: 79325 [2022-11-16 11:01:41,930 INFO L226 Difference]: Without dead ends: 79325 [2022-11-16 11:01:41,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:01:41,932 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 120 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:01:41,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 16 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 11:01:42,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79325 states. [2022-11-16 11:01:44,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79325 to 63435. [2022-11-16 11:01:44,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63435 states, 54920 states have (on average 3.8399126001456665) internal successors, (210888), 63434 states have internal predecessors, (210888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:01:44,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63435 states to 63435 states and 210888 transitions. [2022-11-16 11:01:44,892 INFO L78 Accepts]: Start accepts. Automaton has 63435 states and 210888 transitions. Word has length 2 [2022-11-16 11:01:44,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:01:44,893 INFO L495 AbstractCegarLoop]: Abstraction has 63435 states and 210888 transitions. [2022-11-16 11:01:44,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:01:44,893 INFO L276 IsEmpty]: Start isEmpty. Operand 63435 states and 210888 transitions. [2022-11-16 11:01:44,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 11:01:44,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:01:44,893 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 11:01:44,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:01:44,894 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 176 more)] === [2022-11-16 11:01:44,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:01:44,894 INFO L85 PathProgramCache]: Analyzing trace with hash 105565, now seen corresponding path program 1 times [2022-11-16 11:01:44,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:01:44,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639829987] [2022-11-16 11:01:44,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:01:44,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:01:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:44,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:01:44,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:01:44,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639829987] [2022-11-16 11:01:44,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639829987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:01:44,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:01:44,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:01:44,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236018149] [2022-11-16 11:01:44,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:01:44,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:01:44,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:01:44,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:01:44,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:01:44,974 INFO L87 Difference]: Start difference. First operand 63435 states and 210888 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:01:46,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:01:46,278 INFO L93 Difference]: Finished difference Result 63437 states and 210890 transitions. [2022-11-16 11:01:46,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:01:46,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2022-11-16 11:01:46,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:01:46,739 INFO L225 Difference]: With dead ends: 63437 [2022-11-16 11:01:46,739 INFO L226 Difference]: Without dead ends: 63437 [2022-11-16 11:01:46,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:01:46,740 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:01:46,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 38 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:01:46,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63437 states. [2022-11-16 11:01:48,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63437 to 63436. [2022-11-16 11:01:49,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63436 states, 54921 states have (on average 3.839879099069573) internal successors, (210890), 63435 states have internal predecessors, (210890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:01:49,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63436 states to 63436 states and 210890 transitions. [2022-11-16 11:01:49,755 INFO L78 Accepts]: Start accepts. Automaton has 63436 states and 210890 transitions. Word has length 2 [2022-11-16 11:01:49,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:01:49,755 INFO L495 AbstractCegarLoop]: Abstraction has 63436 states and 210890 transitions. [2022-11-16 11:01:49,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:01:49,756 INFO L276 IsEmpty]: Start isEmpty. Operand 63436 states and 210890 transitions. [2022-11-16 11:01:49,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 11:01:49,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:01:49,756 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 11:01:49,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:01:49,756 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 176 more)] === [2022-11-16 11:01:49,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:01:49,757 INFO L85 PathProgramCache]: Analyzing trace with hash 105693, now seen corresponding path program 1 times [2022-11-16 11:01:49,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:01:49,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981161292] [2022-11-16 11:01:49,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:01:49,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:01:49,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:49,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:01:49,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:01:49,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981161292] [2022-11-16 11:01:49,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981161292] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:01:49,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:01:49,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:01:49,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570033352] [2022-11-16 11:01:49,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:01:49,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:01:49,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:01:49,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:01:49,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:01:49,880 INFO L87 Difference]: Start difference. First operand 63436 states and 210890 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:01:50,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:01:50,607 INFO L93 Difference]: Finished difference Result 63436 states and 210889 transitions. [2022-11-16 11:01:50,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:01:50,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2022-11-16 11:01:50,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:01:51,771 INFO L225 Difference]: With dead ends: 63436 [2022-11-16 11:01:51,771 INFO L226 Difference]: Without dead ends: 63436 [2022-11-16 11:01:51,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:01:51,772 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:01:51,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:01:51,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63436 states. [2022-11-16 11:01:53,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63436 to 63436. [2022-11-16 11:01:53,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63436 states, 54921 states have (on average 3.8398608910981227) internal successors, (210889), 63435 states have internal predecessors, (210889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:01:53,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63436 states to 63436 states and 210889 transitions. [2022-11-16 11:01:53,755 INFO L78 Accepts]: Start accepts. Automaton has 63436 states and 210889 transitions. Word has length 2 [2022-11-16 11:01:53,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:01:53,755 INFO L495 AbstractCegarLoop]: Abstraction has 63436 states and 210889 transitions. [2022-11-16 11:01:53,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:01:53,755 INFO L276 IsEmpty]: Start isEmpty. Operand 63436 states and 210889 transitions. [2022-11-16 11:01:53,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 11:01:53,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:01:53,756 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 11:01:53,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 11:01:53,756 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 176 more)] === [2022-11-16 11:01:53,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:01:53,757 INFO L85 PathProgramCache]: Analyzing trace with hash 3279531, now seen corresponding path program 1 times [2022-11-16 11:01:53,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:01:53,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160190343] [2022-11-16 11:01:53,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:01:53,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:01:53,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:53,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:01:53,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:01:53,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160190343] [2022-11-16 11:01:53,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160190343] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:01:53,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443339149] [2022-11-16 11:01:53,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:01:53,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:01:53,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:01:53,853 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:01:53,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:01:54,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:54,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:01:54,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:01:54,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:01:54,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:01:54,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:01:54,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443339149] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:01:54,067 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:01:54,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2022-11-16 11:01:54,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233705872] [2022-11-16 11:01:54,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:01:54,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:01:54,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:01:54,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:01:54,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:01:54,071 INFO L87 Difference]: Start difference. First operand 63436 states and 210889 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 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) [2022-11-16 11:01:55,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:01:55,560 INFO L93 Difference]: Finished difference Result 63438 states and 210891 transitions. [2022-11-16 11:01:55,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:01:55,561 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 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 3 [2022-11-16 11:01:55,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:01:55,893 INFO L225 Difference]: With dead ends: 63438 [2022-11-16 11:01:55,893 INFO L226 Difference]: Without dead ends: 63438 [2022-11-16 11:01:55,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:01:55,894 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 2 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:01:55,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 76 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:01:56,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63438 states. [2022-11-16 11:01:57,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63438 to 63437. [2022-11-16 11:01:57,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63437 states, 54922 states have (on average 3.8398273915735044) internal successors, (210891), 63436 states have internal predecessors, (210891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:01:58,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63437 states to 63437 states and 210891 transitions. [2022-11-16 11:01:58,055 INFO L78 Accepts]: Start accepts. Automaton has 63437 states and 210891 transitions. Word has length 3 [2022-11-16 11:01:58,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:01:58,055 INFO L495 AbstractCegarLoop]: Abstraction has 63437 states and 210891 transitions. [2022-11-16 11:01:58,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 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) [2022-11-16 11:01:58,056 INFO L276 IsEmpty]: Start isEmpty. Operand 63437 states and 210891 transitions. [2022-11-16 11:01:58,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 11:01:58,056 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:01:58,056 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 11:01:58,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:01:58,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:01:58,257 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 176 more)] === [2022-11-16 11:01:58,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:01:58,257 INFO L85 PathProgramCache]: Analyzing trace with hash 3279659, now seen corresponding path program 1 times [2022-11-16 11:01:58,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:01:58,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662571207] [2022-11-16 11:01:58,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:01:58,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:01:58,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:58,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:01:58,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:01:58,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662571207] [2022-11-16 11:01:58,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662571207] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:01:58,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773255630] [2022-11-16 11:01:58,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:01:58,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:01:58,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:01:58,410 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:01:58,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:01:58,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:58,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 11:01:58,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:01:58,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:01:58,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:01:58,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:01:58,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773255630] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:01:58,645 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:01:58,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2022-11-16 11:01:58,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448380353] [2022-11-16 11:01:58,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:01:58,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:01:58,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:01:58,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:01:58,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:01:58,646 INFO L87 Difference]: Start difference. First operand 63437 states and 210891 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 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) [2022-11-16 11:02:00,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:02:00,665 INFO L93 Difference]: Finished difference Result 73385 states and 242392 transitions. [2022-11-16 11:02:00,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:02:00,666 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 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 3 [2022-11-16 11:02:00,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:02:01,007 INFO L225 Difference]: With dead ends: 73385 [2022-11-16 11:02:01,007 INFO L226 Difference]: Without dead ends: 73385 [2022-11-16 11:02:01,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:02:01,008 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 177 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:02:01,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 40 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 11:02:01,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73385 states. [2022-11-16 11:02:02,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73385 to 63439. [2022-11-16 11:02:02,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63439 states, 54924 states have (on average 3.839778603160731) internal successors, (210896), 63438 states have internal predecessors, (210896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:02:03,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63439 states to 63439 states and 210896 transitions. [2022-11-16 11:02:03,212 INFO L78 Accepts]: Start accepts. Automaton has 63439 states and 210896 transitions. Word has length 3 [2022-11-16 11:02:03,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:02:03,212 INFO L495 AbstractCegarLoop]: Abstraction has 63439 states and 210896 transitions. [2022-11-16 11:02:03,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 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) [2022-11-16 11:02:03,213 INFO L276 IsEmpty]: Start isEmpty. Operand 63439 states and 210896 transitions. [2022-11-16 11:02:03,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 11:02:03,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:02:03,214 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1] [2022-11-16 11:02:03,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-16 11:02:03,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91d9a1e2-7697-42d5-bd0e-cf86b4304acc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 11:02:03,427 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 176 more)] === [2022-11-16 11:02:03,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:02:03,427 INFO L85 PathProgramCache]: Analyzing trace with hash 101672477, now seen corresponding path program 2 times [2022-11-16 11:02:03,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:02:03,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379651822] [2022-11-16 11:02:03,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:02:03,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:02:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:03,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:02:03,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:02:03,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379651822] [2022-11-16 11:02:03,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379651822] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:02:03,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:02:03,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:02:03,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469030636] [2022-11-16 11:02:03,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:02:03,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:02:03,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:02:03,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:02:03,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:02:03,589 INFO L87 Difference]: Start difference. First operand 63439 states and 210896 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:02:05,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:02:05,334 INFO L93 Difference]: Finished difference Result 63264 states and 208603 transitions. [2022-11-16 11:02:05,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:02:05,334 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 4 [2022-11-16 11:02:05,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:02:05,682 INFO L225 Difference]: With dead ends: 63264 [2022-11-16 11:02:05,683 INFO L226 Difference]: Without dead ends: 63264 [2022-11-16 11:02:05,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:02:05,683 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 55 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:02:05,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 19 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:02:05,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63264 states. [2022-11-16 11:02:07,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63264 to 62814. [2022-11-16 11:02:07,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62814 states, 54300 states have (on average 3.8340147329650094) internal successors, (208187), 62813 states have internal predecessors, (208187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:02:08,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62814 states to 62814 states and 208187 transitions. [2022-11-16 11:02:08,060 INFO L78 Accepts]: Start accepts. Automaton has 62814 states and 208187 transitions. Word has length 4 [2022-11-16 11:02:08,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:02:08,060 INFO L495 AbstractCegarLoop]: Abstraction has 62814 states and 208187 transitions. [2022-11-16 11:02:08,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:02:08,061 INFO L276 IsEmpty]: Start isEmpty. Operand 62814 states and 208187 transitions. [2022-11-16 11:02:08,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 11:02:08,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:02:08,061 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1] [2022-11-16 11:02:08,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 11:02:08,061 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 176 more)] === [2022-11-16 11:02:08,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:02:08,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1143115312, now seen corresponding path program 1 times [2022-11-16 11:02:08,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:02:08,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568826040] [2022-11-16 11:02:08,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:02:08,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:02:08,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:08,158 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:02:08,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:02:08,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568826040] [2022-11-16 11:02:08,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568826040] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:02:08,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:02:08,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:02:08,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641531338] [2022-11-16 11:02:08,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:02:08,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:02:08,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:02:08,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:02:08,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:02:08,161 INFO L87 Difference]: Start difference. First operand 62814 states and 208187 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2022-11-16 11:02:10,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:02:10,019 INFO L93 Difference]: Finished difference Result 73619 states and 226940 transitions. [2022-11-16 11:02:10,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:02:10,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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 5 [2022-11-16 11:02:10,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:02:10,339 INFO L225 Difference]: With dead ends: 73619 [2022-11-16 11:02:10,339 INFO L226 Difference]: Without dead ends: 73619 [2022-11-16 11:02:10,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:02:10,340 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 115 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:02:10,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 24 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 11:02:10,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73619 states. [2022-11-16 11:02:12,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73619 to 64834. [2022-11-16 11:02:12,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64834 states, 56321 states have (on average 3.7955647094334264) internal successors, (213770), 64833 states have internal predecessors, (213770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:02:12,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64834 states to 64834 states and 213770 transitions. [2022-11-16 11:02:12,607 INFO L78 Accepts]: Start accepts. Automaton has 64834 states and 213770 transitions. Word has length 5 [2022-11-16 11:02:12,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:02:12,607 INFO L495 AbstractCegarLoop]: Abstraction has 64834 states and 213770 transitions. [2022-11-16 11:02:12,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2022-11-16 11:02:12,607 INFO L276 IsEmpty]: Start isEmpty. Operand 64834 states and 213770 transitions. [2022-11-16 11:02:12,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 11:02:12,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:02:12,608 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1] [2022-11-16 11:02:12,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 11:02:12,608 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 176 more)] === [2022-11-16 11:02:12,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:02:12,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1143115311, now seen corresponding path program 1 times [2022-11-16 11:02:12,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:02:12,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640880769] [2022-11-16 11:02:12,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:02:12,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:02:12,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:12,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:02:12,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:02:12,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640880769] [2022-11-16 11:02:12,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640880769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:02:12,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:02:12,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:02:12,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244967120] [2022-11-16 11:02:12,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:02:12,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:02:12,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:02:12,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:02:12,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:02:12,833 INFO L87 Difference]: Start difference. First operand 64834 states and 213770 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) [2022-11-16 11:02:14,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:02:14,613 INFO L93 Difference]: Finished difference Result 64085 states and 210432 transitions. [2022-11-16 11:02:14,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:02:14,614 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 5 [2022-11-16 11:02:14,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:02:14,972 INFO L225 Difference]: With dead ends: 64085 [2022-11-16 11:02:14,973 INFO L226 Difference]: Without dead ends: 64085 [2022-11-16 11:02:14,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:02:14,974 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 94 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:02:14,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 33 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 11:02:15,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64085 states.