./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/queue_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 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_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/config/GemCutterMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/queue_ok.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w --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 GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7cc273f13a619f37768d5108c297b75ab7c37145fe391daced9c134730721251 --- 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-2329fc7 [2022-12-13 09:28:08,449 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 09:28:08,451 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 09:28:08,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 09:28:08,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 09:28:08,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 09:28:08,473 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 09:28:08,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 09:28:08,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 09:28:08,477 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 09:28:08,478 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 09:28:08,479 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 09:28:08,479 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 09:28:08,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 09:28:08,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 09:28:08,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 09:28:08,483 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 09:28:08,484 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 09:28:08,486 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 09:28:08,488 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 09:28:08,489 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 09:28:08,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 09:28:08,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 09:28:08,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 09:28:08,493 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 09:28:08,493 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 09:28:08,494 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 09:28:08,494 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 09:28:08,494 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 09:28:08,495 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 09:28:08,495 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 09:28:08,496 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 09:28:08,496 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 09:28:08,497 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 09:28:08,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 09:28:08,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 09:28:08,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 09:28:08,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 09:28:08,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 09:28:08,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 09:28:08,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 09:28:08,499 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Default.epf [2022-12-13 09:28:08,520 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 09:28:08,520 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 09:28:08,520 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 09:28:08,521 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 09:28:08,521 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 09:28:08,521 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 09:28:08,522 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 09:28:08,522 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 09:28:08,522 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 09:28:08,522 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 09:28:08,522 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 09:28:08,522 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 09:28:08,523 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 09:28:08,523 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 09:28:08,523 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 09:28:08,523 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 09:28:08,523 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 09:28:08,523 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 09:28:08,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 09:28:08,523 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 09:28:08,523 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 09:28:08,524 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 09:28:08,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 09:28:08,524 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 09:28:08,524 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 09:28:08,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 09:28:08,524 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 09:28:08,524 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 09:28:08,524 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 09:28:08,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 09:28:08,525 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-13 09:28:08,525 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-12-13 09:28:08,525 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-12-13 09:28:08,525 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2022-12-13 09:28:08,525 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2022-12-13 09:28:08,525 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_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cc273f13a619f37768d5108c297b75ab7c37145fe391daced9c134730721251 [2022-12-13 09:28:08,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 09:28:08,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 09:28:08,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 09:28:08,739 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 09:28:08,739 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 09:28:08,741 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/../../sv-benchmarks/c/pthread/queue_ok.i [2022-12-13 09:28:11,394 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 09:28:11,582 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 09:28:11,582 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/sv-benchmarks/c/pthread/queue_ok.i [2022-12-13 09:28:11,592 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/data/d87d998d6/947a5d435e044d9985e35ce3f549a43a/FLAG097a25285 [2022-12-13 09:28:11,604 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/data/d87d998d6/947a5d435e044d9985e35ce3f549a43a [2022-12-13 09:28:11,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 09:28:11,607 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 09:28:11,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 09:28:11,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 09:28:11,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 09:28:11,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:28:11" (1/1) ... [2022-12-13 09:28:11,613 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a902be3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:11, skipping insertion in model container [2022-12-13 09:28:11,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:28:11" (1/1) ... [2022-12-13 09:28:11,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 09:28:11,644 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 09:28:11,915 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/sv-benchmarks/c/pthread/queue_ok.i[43266,43279] [2022-12-13 09:28:11,918 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/sv-benchmarks/c/pthread/queue_ok.i[43543,43556] [2022-12-13 09:28:11,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 09:28:11,930 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 09:28:11,960 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/sv-benchmarks/c/pthread/queue_ok.i[43266,43279] [2022-12-13 09:28:11,963 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/sv-benchmarks/c/pthread/queue_ok.i[43543,43556] [2022-12-13 09:28:11,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 09:28:11,995 INFO L208 MainTranslator]: Completed translation [2022-12-13 09:28:11,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:11 WrapperNode [2022-12-13 09:28:11,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 09:28:11,996 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 09:28:11,997 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 09:28:11,997 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 09:28:12,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:11" (1/1) ... [2022-12-13 09:28:12,014 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:11" (1/1) ... [2022-12-13 09:28:12,033 INFO L138 Inliner]: procedures = 274, calls = 57, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 202 [2022-12-13 09:28:12,033 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 09:28:12,034 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 09:28:12,034 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 09:28:12,034 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 09:28:12,041 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:11" (1/1) ... [2022-12-13 09:28:12,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:11" (1/1) ... [2022-12-13 09:28:12,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:11" (1/1) ... [2022-12-13 09:28:12,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:11" (1/1) ... [2022-12-13 09:28:12,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:11" (1/1) ... [2022-12-13 09:28:12,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:11" (1/1) ... [2022-12-13 09:28:12,055 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:11" (1/1) ... [2022-12-13 09:28:12,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:11" (1/1) ... [2022-12-13 09:28:12,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 09:28:12,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 09:28:12,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 09:28:12,059 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 09:28:12,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:11" (1/1) ... [2022-12-13 09:28:12,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 09:28:12,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 [2022-12-13 09:28:12,084 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 09:28:12,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 09:28:12,115 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-13 09:28:12,115 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-13 09:28:12,115 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-13 09:28:12,116 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-13 09:28:12,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 09:28:12,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 09:28:12,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 09:28:12,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 09:28:12,116 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 09:28:12,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 09:28:12,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 09:28:12,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 09:28:12,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 09:28:12,117 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 09:28:12,232 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 09:28:12,234 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 09:28:12,616 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 09:28:12,625 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 09:28:12,625 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 09:28:12,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:28:12 BoogieIcfgContainer [2022-12-13 09:28:12,626 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 09:28:12,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 09:28:12,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 09:28:12,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 09:28:12,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:28:11" (1/3) ... [2022-12-13 09:28:12,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57a71ea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:28:12, skipping insertion in model container [2022-12-13 09:28:12,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:11" (2/3) ... [2022-12-13 09:28:12,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57a71ea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:28:12, skipping insertion in model container [2022-12-13 09:28:12,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:28:12" (3/3) ... [2022-12-13 09:28:12,635 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok.i [2022-12-13 09:28:12,651 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 09:28:12,651 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 61 error locations. [2022-12-13 09:28:12,651 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 09:28:12,732 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 09:28:12,767 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 09:28:12,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-12-13 09:28:12,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 [2022-12-13 09:28:12,769 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-12-13 09:28:12,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-12-13 09:28:12,810 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-12-13 09:28:12,821 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t1Thread1of1ForFork1 ======== [2022-12-13 09:28:12,827 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=PARTIAL_ORDER_FA, 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;@14e83932, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 09:28:12,828 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-12-13 09:28:13,100 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 09:28:13,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:28:13,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1604496347, now seen corresponding path program 1 times [2022-12-13 09:28:13,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:28:13,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876224010] [2022-12-13 09:28:13,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:28:13,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:28:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:28:13,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:28:13,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:28:13,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876224010] [2022-12-13 09:28:13,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876224010] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:28:13,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:28:13,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 09:28:13,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735768088] [2022-12-13 09:28:13,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:28:13,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 09:28:13,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:28:13,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 09:28:13,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 09:28:13,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:13,362 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-12-13 09:28:13,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 49.5) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:28:13,363 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:13,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:13,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 09:28:13,407 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 09:28:13,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:28:13,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1668741918, now seen corresponding path program 1 times [2022-12-13 09:28:13,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:28:13,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605776359] [2022-12-13 09:28:13,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:28:13,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:28:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:28:14,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:28:14,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:28:14,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605776359] [2022-12-13 09:28:14,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605776359] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:28:14,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:28:14,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-13 09:28:14,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301436243] [2022-12-13 09:28:14,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:28:14,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 09:28:14,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:28:14,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 09:28:14,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-12-13 09:28:14,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:14,777 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-12-13 09:28:14,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.0625) internal successors, (97), 16 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:28:14,777 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:14,777 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:15,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:15,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 09:28:15,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 09:28:15,853 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 09:28:15,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:28:15,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1434799636, now seen corresponding path program 1 times [2022-12-13 09:28:15,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:28:15,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901052393] [2022-12-13 09:28:15,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:28:15,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:28:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:28:15,907 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 09:28:15,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:28:15,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901052393] [2022-12-13 09:28:15,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901052393] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:28:15,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:28:15,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 09:28:15,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723862542] [2022-12-13 09:28:15,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:28:15,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 09:28:15,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:28:15,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 09:28:15,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 09:28:15,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:15,912 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-12-13 09:28:15,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 58.0) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:28:15,912 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:15,913 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2022-12-13 09:28:15,913 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:16,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:16,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 09:28:16,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:16,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 09:28:16,058 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 09:28:16,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:28:16,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1434799637, now seen corresponding path program 1 times [2022-12-13 09:28:16,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:28:16,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665073983] [2022-12-13 09:28:16,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:28:16,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:28:16,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:28:16,179 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 09:28:16,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:28:16,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665073983] [2022-12-13 09:28:16,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665073983] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 09:28:16,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307882676] [2022-12-13 09:28:16,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:28:16,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 09:28:16,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 [2022-12-13 09:28:16,205 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 09:28:16,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 09:28:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:28:16,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 09:28:16,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 09:28:16,379 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 09:28:16,379 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 09:28:16,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307882676] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:28:16,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 09:28:16,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-12-13 09:28:16,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812414612] [2022-12-13 09:28:16,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:28:16,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 09:28:16,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:28:16,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 09:28:16,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 09:28:16,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:16,383 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-12-13 09:28:16,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 58.0) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:28:16,383 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:16,383 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2022-12-13 09:28:16,383 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:16,383 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:16,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:16,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 09:28:16,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:16,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:16,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 09:28:17,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 09:28:17,091 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 09:28:17,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:28:17,092 INFO L85 PathProgramCache]: Analyzing trace with hash -583036108, now seen corresponding path program 1 times [2022-12-13 09:28:17,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:28:17,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267440897] [2022-12-13 09:28:17,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:28:17,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:28:17,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:28:17,515 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-12-13 09:28:17,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:28:17,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267440897] [2022-12-13 09:28:17,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267440897] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:28:17,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:28:17,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 09:28:17,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470173517] [2022-12-13 09:28:17,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:28:17,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 09:28:17,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:28:17,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 09:28:17,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 09:28:17,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:17,519 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-12-13 09:28:17,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:28:17,520 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:17,520 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2022-12-13 09:28:17,520 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:17,520 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:17,520 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:17,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:17,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 09:28:17,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:17,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:17,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:17,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 09:28:17,583 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 09:28:17,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:28:17,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1407361867, now seen corresponding path program 1 times [2022-12-13 09:28:17,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:28:17,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261434488] [2022-12-13 09:28:17,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:28:17,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:28:17,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:28:17,736 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-12-13 09:28:17,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:28:17,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261434488] [2022-12-13 09:28:17,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261434488] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 09:28:17,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046198153] [2022-12-13 09:28:17,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:28:17,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 09:28:17,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 [2022-12-13 09:28:17,738 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 09:28:17,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 09:28:17,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:28:17,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 09:28:17,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 09:28:17,880 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-12-13 09:28:17,880 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 09:28:17,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046198153] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:28:17,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 09:28:17,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-12-13 09:28:17,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695365083] [2022-12-13 09:28:17,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:28:17,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 09:28:17,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:28:17,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 09:28:17,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 09:28:17,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:17,884 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-12-13 09:28:17,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 57.5) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:28:17,884 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:17,884 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2022-12-13 09:28:17,884 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:17,884 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:17,884 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:17,885 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:17,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:17,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 09:28:17,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:17,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:17,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:17,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:17,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 09:28:18,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 09:28:18,178 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 09:28:18,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:28:18,178 INFO L85 PathProgramCache]: Analyzing trace with hash 586938666, now seen corresponding path program 1 times [2022-12-13 09:28:18,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:28:18,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577320980] [2022-12-13 09:28:18,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:28:18,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:28:18,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:28:18,518 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-12-13 09:28:18,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:28:18,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577320980] [2022-12-13 09:28:18,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577320980] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 09:28:18,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637657398] [2022-12-13 09:28:18,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:28:18,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 09:28:18,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 [2022-12-13 09:28:18,520 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 09:28:18,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 09:28:18,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:28:18,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 09:28:18,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 09:28:19,065 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-12-13 09:28:19,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 09:28:19,508 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 09:28:19,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2022-12-13 09:28:19,598 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-12-13 09:28:19,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637657398] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 09:28:19,598 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 09:28:19,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 22 [2022-12-13 09:28:19,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497979533] [2022-12-13 09:28:19,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 09:28:19,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 09:28:19,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:28:19,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 09:28:19,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2022-12-13 09:28:19,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:19,601 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-12-13 09:28:19,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 14.681818181818182) internal successors, (323), 23 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:28:19,602 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:19,602 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2022-12-13 09:28:19,602 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:19,602 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:19,602 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:19,602 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:19,602 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:20,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:20,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 09:28:20,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:20,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:20,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:20,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:20,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 09:28:20,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-13 09:28:20,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 09:28:20,216 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 09:28:20,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:28:20,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1189436233, now seen corresponding path program 1 times [2022-12-13 09:28:20,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:28:20,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962815967] [2022-12-13 09:28:20,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:28:20,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:28:20,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:28:20,896 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 20 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 09:28:20,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:28:20,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962815967] [2022-12-13 09:28:20,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962815967] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 09:28:20,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639599863] [2022-12-13 09:28:20,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:28:20,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 09:28:20,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 [2022-12-13 09:28:20,899 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 09:28:20,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 09:28:21,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:28:21,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 35 conjunts are in the unsatisfiable core [2022-12-13 09:28:21,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 09:28:21,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 09:28:21,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 09:28:21,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 09:28:21,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-13 09:28:22,026 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 20 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 09:28:22,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 09:28:22,293 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 09:28:22,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2022-12-13 09:28:22,301 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 09:28:22,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2022-12-13 09:28:22,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 09:28:22,320 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 09:28:22,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-12-13 09:28:22,323 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 09:28:22,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 09:28:22,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-12-13 09:28:22,909 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 09:28:22,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 30 [2022-12-13 09:28:23,107 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 14 proven. 33 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 09:28:23,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639599863] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 09:28:23,108 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 09:28:23,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 38 [2022-12-13 09:28:23,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522487089] [2022-12-13 09:28:23,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 09:28:23,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-12-13 09:28:23,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:28:23,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-12-13 09:28:23,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1308, Unknown=7, NotChecked=0, Total=1482 [2022-12-13 09:28:23,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:23,113 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-12-13 09:28:23,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 10.68421052631579) internal successors, (406), 39 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:28:23,114 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:23,114 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2022-12-13 09:28:23,114 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:23,114 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:23,114 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:23,114 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:23,114 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-12-13 09:28:23,114 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:24,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:24,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 09:28:24,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:24,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:24,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:24,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:24,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 09:28:24,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 09:28:24,738 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 09:28:24,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 09:28:24,934 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 09:28:24,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:28:24,934 INFO L85 PathProgramCache]: Analyzing trace with hash -237801014, now seen corresponding path program 2 times [2022-12-13 09:28:24,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:28:24,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215330312] [2022-12-13 09:28:24,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:28:24,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:28:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:28:26,028 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 160 proven. 43 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-13 09:28:26,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:28:26,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215330312] [2022-12-13 09:28:26,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215330312] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 09:28:26,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569297176] [2022-12-13 09:28:26,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 09:28:26,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 09:28:26,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 [2022-12-13 09:28:26,030 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 09:28:26,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 09:28:26,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 09:28:26,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 09:28:26,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 64 conjunts are in the unsatisfiable core [2022-12-13 09:28:26,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 09:28:26,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 09:28:26,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 09:28:26,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 09:28:26,824 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 09:28:26,830 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-12-13 09:28:26,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2022-12-13 09:28:26,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 09:28:26,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 09:28:26,896 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 09:28:26,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-13 09:28:26,932 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 203 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-13 09:28:26,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 09:28:26,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569297176] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:28:26,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 09:28:26,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15] total 25 [2022-12-13 09:28:26,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656182213] [2022-12-13 09:28:26,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:28:26,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 09:28:26,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:28:26,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 09:28:26,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2022-12-13 09:28:26,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:26,936 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-12-13 09:28:26,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.846153846153847) internal successors, (193), 13 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:28:26,936 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:26,936 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2022-12-13 09:28:26,936 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:26,936 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:26,936 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:26,936 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:26,936 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-12-13 09:28:26,937 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2022-12-13 09:28:26,937 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:27,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:27,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 09:28:27,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:27,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:27,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:27,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:27,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 09:28:27,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 09:28:27,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 09:28:27,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 09:28:27,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-13 09:28:27,476 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 09:28:27,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:28:27,477 INFO L85 PathProgramCache]: Analyzing trace with hash 423876573, now seen corresponding path program 1 times [2022-12-13 09:28:27,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:28:27,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335156862] [2022-12-13 09:28:27,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:28:27,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:28:27,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:28:27,686 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2022-12-13 09:28:27,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:28:27,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335156862] [2022-12-13 09:28:27,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335156862] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 09:28:27,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5750668] [2022-12-13 09:28:27,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:28:27,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 09:28:27,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 [2022-12-13 09:28:27,689 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 09:28:27,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 09:28:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:28:27,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 09:28:27,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 09:28:28,260 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2022-12-13 09:28:28,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 09:28:28,426 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-12-13 09:28:28,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 11 [2022-12-13 09:28:28,432 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2022-12-13 09:28:28,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5750668] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 09:28:28,433 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 09:28:28,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2022-12-13 09:28:28,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301969994] [2022-12-13 09:28:28,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 09:28:28,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 09:28:28,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:28:28,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 09:28:28,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-12-13 09:28:28,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:28,436 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-12-13 09:28:28,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 16.846153846153847) internal successors, (219), 14 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:28:28,437 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:28,437 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2022-12-13 09:28:28,437 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:28,437 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:28,437 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:28,437 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:28,437 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-12-13 09:28:28,437 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2022-12-13 09:28:28,437 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-12-13 09:28:28,437 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:28,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:28,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 09:28:28,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:28,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:28,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:28,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:28,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 09:28:28,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 09:28:28,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 09:28:28,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 09:28:28,595 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 09:28:28,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 09:28:28,791 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 09:28:28,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:28:28,793 INFO L85 PathProgramCache]: Analyzing trace with hash 753619954, now seen corresponding path program 1 times [2022-12-13 09:28:28,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:28:28,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253014119] [2022-12-13 09:28:28,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:28:28,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:28:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:28:28,890 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-12-13 09:28:28,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:28:28,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253014119] [2022-12-13 09:28:28,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253014119] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:28:28,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:28:28,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 09:28:28,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803921737] [2022-12-13 09:28:28,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:28:28,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 09:28:28,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:28:28,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 09:28:28,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 09:28:28,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:28,893 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-12-13 09:28:28,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 72.5) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:28:28,893 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:28,893 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2022-12-13 09:28:28,893 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:28,893 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:28,893 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:28,894 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:28,894 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-12-13 09:28:28,894 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2022-12-13 09:28:28,894 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-12-13 09:28:28,894 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-12-13 09:28:28,894 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:28,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:28,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 09:28:28,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:28,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:28,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:28,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:28,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 09:28:28,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 09:28:28,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 09:28:28,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 09:28:28,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:28,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 09:28:28,949 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 09:28:28,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:28:28,949 INFO L85 PathProgramCache]: Analyzing trace with hash -187764115, now seen corresponding path program 1 times [2022-12-13 09:28:28,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:28:28,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327983561] [2022-12-13 09:28:28,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:28:28,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:28:28,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:28:30,430 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 61 proven. 20 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 09:28:30,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:28:30,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327983561] [2022-12-13 09:28:30,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327983561] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 09:28:30,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912672981] [2022-12-13 09:28:30,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:28:30,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 09:28:30,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 [2022-12-13 09:28:30,431 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 09:28:30,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 09:28:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:28:30,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 09:28:30,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 09:28:30,665 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 09:28:30,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 09:28:30,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-13 09:28:30,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 09:28:30,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-13 09:28:31,297 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:28:31,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 09:28:33,958 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 09:28:33,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 52 [2022-12-13 09:28:33,970 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 09:28:33,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 64 [2022-12-13 09:28:34,033 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:28:34,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912672981] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 09:28:34,033 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 09:28:34,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 9, 9] total 41 [2022-12-13 09:28:34,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130349946] [2022-12-13 09:28:34,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 09:28:34,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-12-13 09:28:34,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:28:34,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-12-13 09:28:34,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1449, Unknown=0, NotChecked=0, Total=1640 [2022-12-13 09:28:34,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:34,036 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-12-13 09:28:34,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 11.365853658536585) internal successors, (466), 41 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:28:34,036 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:34,036 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2022-12-13 09:28:34,036 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:34,036 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:34,036 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:34,036 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:34,036 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-12-13 09:28:34,036 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2022-12-13 09:28:34,036 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-12-13 09:28:34,036 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-12-13 09:28:34,036 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:34,036 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:36,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:36,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 09:28:36,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:36,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:36,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:36,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:36,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 09:28:36,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 09:28:36,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 09:28:36,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 09:28:36,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:36,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-12-13 09:28:36,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-13 09:28:36,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 09:28:36,334 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 09:28:36,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:28:36,335 INFO L85 PathProgramCache]: Analyzing trace with hash 955656561, now seen corresponding path program 2 times [2022-12-13 09:28:36,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:28:36,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078343167] [2022-12-13 09:28:36,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:28:36,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:28:36,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:28:38,636 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 350 proven. 131 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-12-13 09:28:38,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:28:38,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078343167] [2022-12-13 09:28:38,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078343167] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 09:28:38,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437492181] [2022-12-13 09:28:38,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 09:28:38,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 09:28:38,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 [2022-12-13 09:28:38,637 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 09:28:38,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 09:28:38,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 09:28:38,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 09:28:38,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 09:28:38,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 09:28:38,905 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 09:28:38,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 09:28:38,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-13 09:28:38,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 09:28:38,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-13 09:28:40,548 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 633 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:28:40,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 09:28:40,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437492181] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:28:40,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 09:28:40,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [21] total 38 [2022-12-13 09:28:40,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680969194] [2022-12-13 09:28:40,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:28:40,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 09:28:40,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:28:40,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 09:28:40,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1195, Unknown=0, NotChecked=0, Total=1406 [2022-12-13 09:28:40,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:40,552 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-12-13 09:28:40,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 16.61111111111111) internal successors, (299), 19 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:28:40,552 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:40,552 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2022-12-13 09:28:40,552 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:40,552 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:40,552 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:40,552 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:40,553 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-12-13 09:28:40,553 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2022-12-13 09:28:40,553 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-12-13 09:28:40,553 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-12-13 09:28:40,553 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:40,553 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 40 states. [2022-12-13 09:28:40,553 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:41,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:28:41,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 09:28:41,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:41,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:41,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:41,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:41,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 09:28:41,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 09:28:41,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 09:28:41,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 09:28:41,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:41,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-12-13 09:28:41,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-13 09:28:41,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 09:28:41,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 09:28:41,592 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 09:28:41,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:28:41,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1302616781, now seen corresponding path program 3 times [2022-12-13 09:28:41,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:28:41,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026567449] [2022-12-13 09:28:41,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:28:41,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:28:41,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:28:43,489 INFO L134 CoverageAnalysis]: Checked inductivity of 974 backedges. 638 proven. 99 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2022-12-13 09:28:43,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:28:43,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026567449] [2022-12-13 09:28:43,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026567449] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 09:28:43,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771082028] [2022-12-13 09:28:43,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 09:28:43,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 09:28:43,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 [2022-12-13 09:28:43,490 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 09:28:43,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 09:28:43,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 09:28:43,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 09:28:43,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 77 conjunts are in the unsatisfiable core [2022-12-13 09:28:43,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 09:28:43,756 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 09:28:43,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 09:28:43,766 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 09:28:43,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 09:28:45,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 09:28:46,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 09:28:46,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 09:28:46,284 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 09:28:46,292 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-12-13 09:28:46,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 27 [2022-12-13 09:28:46,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 09:28:46,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 09:28:46,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2022-12-13 09:28:46,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 09:28:46,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 09:28:46,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 09:28:46,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-13 09:28:46,940 INFO L134 CoverageAnalysis]: Checked inductivity of 974 backedges. 336 proven. 129 refuted. 0 times theorem prover too weak. 509 trivial. 0 not checked. [2022-12-13 09:28:46,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 09:28:47,103 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ 84 |c_~#queue~0.offset|))) (and (forall ((v_ArrVal_1119 (Array Int Int))) (<= (+ (* (select (select (store |c_#memory_int| |c_~#stored_elements~0.base| v_ArrVal_1119) |c_~#queue~0.base|) .cse0) 4) |c_~#queue~0.offset| 4) (select |c_#length| |c_~#queue~0.base|))) (forall ((v_ArrVal_1119 (Array Int Int))) (<= 0 (+ (* (select (select (store |c_#memory_int| |c_~#stored_elements~0.base| v_ArrVal_1119) |c_~#queue~0.base|) .cse0) 4) |c_~#queue~0.offset|))))) is different from false [2022-12-13 09:28:47,112 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ 84 |c_~#queue~0.offset|))) (and (forall ((v_ArrVal_1119 (Array Int Int)) (v_ArrVal_1118 (Array Int Int))) (<= (+ |c_~#queue~0.offset| 4 (* 4 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1118) |c_~#stored_elements~0.base| v_ArrVal_1119) |c_~#queue~0.base|) .cse0))) (select |c_#length| |c_~#queue~0.base|))) (forall ((v_ArrVal_1119 (Array Int Int)) (v_ArrVal_1118 (Array Int Int))) (<= 0 (+ |c_~#queue~0.offset| (* 4 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1118) |c_~#stored_elements~0.base| v_ArrVal_1119) |c_~#queue~0.base|) .cse0))))))) is different from false [2022-12-13 09:28:49,169 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (store |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base| (store (select |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base|) (+ 84 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|) (+ |c_t1Thread1of1ForFork1_enqueue_#t~post41#1| 1)))) (.cse1 (+ 84 |c_~#queue~0.offset|))) (and (forall ((v_ArrVal_1119 (Array Int Int)) (v_ArrVal_1118 (Array Int Int))) (<= (+ |c_~#queue~0.offset| 4 (* 4 (select (select (store (store .cse0 |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1118) |c_~#stored_elements~0.base| v_ArrVal_1119) |c_~#queue~0.base|) .cse1))) (select |c_#length| |c_~#queue~0.base|))) (forall ((v_ArrVal_1119 (Array Int Int)) (v_ArrVal_1118 (Array Int Int))) (<= 0 (+ |c_~#queue~0.offset| (* 4 (select (select (store (store .cse0 |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1118) |c_~#stored_elements~0.base| v_ArrVal_1119) |c_~#queue~0.base|) .cse1))))))) is different from false [2022-12-13 09:28:51,197 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (store |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base| (store (select |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base|) (+ 84 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|) (+ |c_t1Thread1of1ForFork1_enqueue_#t~mem40#1| 1)))) (.cse1 (+ 84 |c_~#queue~0.offset|))) (and (forall ((v_ArrVal_1119 (Array Int Int)) (v_ArrVal_1118 (Array Int Int))) (<= 0 (+ (* (select (select (store (store .cse0 |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1118) |c_~#stored_elements~0.base| v_ArrVal_1119) |c_~#queue~0.base|) .cse1) 4) |c_~#queue~0.offset|))) (forall ((v_ArrVal_1119 (Array Int Int)) (v_ArrVal_1118 (Array Int Int))) (<= (+ (* (select (select (store (store .cse0 |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1118) |c_~#stored_elements~0.base| v_ArrVal_1119) |c_~#queue~0.base|) .cse1) 4) |c_~#queue~0.offset| 4) (select |c_#length| |c_~#queue~0.base|))))) is different from false [2022-12-13 09:28:51,215 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (store |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base| (let ((.cse2 (select |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base|)) (.cse3 (+ 84 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|))) (store .cse2 .cse3 (+ (select .cse2 .cse3) 1))))) (.cse1 (+ 84 |c_~#queue~0.offset|))) (and (forall ((v_ArrVal_1119 (Array Int Int)) (v_ArrVal_1118 (Array Int Int))) (<= 0 (+ |c_~#queue~0.offset| (* (select (select (store (store .cse0 |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1118) |c_~#stored_elements~0.base| v_ArrVal_1119) |c_~#queue~0.base|) .cse1) 4)))) (forall ((v_ArrVal_1119 (Array Int Int)) (v_ArrVal_1118 (Array Int Int))) (<= (+ |c_~#queue~0.offset| (* (select (select (store (store .cse0 |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1118) |c_~#stored_elements~0.base| v_ArrVal_1119) |c_~#queue~0.base|) .cse1) 4) 4) (select |c_#length| |c_~#queue~0.base|))))) is different from false [2022-12-13 09:28:56,760 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (select |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base|)) (.cse2 (+ 84 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|))) (let ((.cse1 (+ 88 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|)) (.cse4 (+ (* (select .cse3 .cse2) 4) |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|)) (.cse5 (+ 84 |c_~#queue~0.offset|))) (and (forall ((v_ArrVal_1119 (Array Int Int)) (v_ArrVal_1118 (Array Int Int)) (v_ArrVal_1112 Int) (v_ArrVal_1114 Int)) (<= 0 (+ (* (select (select (store (store (store |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base| (let ((.cse0 (store .cse3 .cse4 v_ArrVal_1112))) (store (store .cse0 .cse1 v_ArrVal_1114) .cse2 (+ (select .cse0 .cse2) 1)))) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1118) |c_~#stored_elements~0.base| v_ArrVal_1119) |c_~#queue~0.base|) .cse5) 4) |c_~#queue~0.offset|))) (forall ((v_ArrVal_1119 (Array Int Int)) (v_ArrVal_1118 (Array Int Int)) (v_ArrVal_1112 Int) (v_ArrVal_1114 Int)) (<= (+ (* (select (select (store (store (store |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base| (let ((.cse6 (store .cse3 .cse4 v_ArrVal_1112))) (store (store .cse6 .cse1 v_ArrVal_1114) .cse2 (+ (select .cse6 .cse2) 1)))) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1118) |c_~#stored_elements~0.base| v_ArrVal_1119) |c_~#queue~0.base|) .cse5) 4) |c_~#queue~0.offset| 4) (select |c_#length| |c_~#queue~0.base|)))))) is different from false [2022-12-13 09:29:02,266 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (select |c_#memory_int| |c_~#queue~0.base|)) (.cse2 (+ 84 |c_~#queue~0.offset|))) (let ((.cse1 (+ 88 |c_~#queue~0.offset|)) (.cse4 (+ (* (select .cse3 .cse2) 4) |c_~#queue~0.offset|))) (and (forall ((v_ArrVal_1119 (Array Int Int)) (v_ArrVal_1118 (Array Int Int)) (v_ArrVal_1112 Int) (v_ArrVal_1114 Int)) (<= 0 (+ |c_~#queue~0.offset| (* 4 (select (select (store (store (store |c_#memory_int| |c_~#queue~0.base| (let ((.cse0 (store .cse3 .cse4 v_ArrVal_1112))) (store (store .cse0 .cse1 v_ArrVal_1114) .cse2 (+ (select .cse0 .cse2) 1)))) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1118) |c_~#stored_elements~0.base| v_ArrVal_1119) |c_~#queue~0.base|) .cse2))))) (forall ((v_ArrVal_1119 (Array Int Int)) (v_ArrVal_1118 (Array Int Int)) (v_ArrVal_1112 Int) (v_ArrVal_1114 Int)) (<= (+ |c_~#queue~0.offset| 4 (* 4 (select (select (store (store (store |c_#memory_int| |c_~#queue~0.base| (let ((.cse5 (store .cse3 .cse4 v_ArrVal_1112))) (store (store .cse5 .cse1 v_ArrVal_1114) .cse2 (+ (select .cse5 .cse2) 1)))) |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1118) |c_~#stored_elements~0.base| v_ArrVal_1119) |c_~#queue~0.base|) .cse2))) (select |c_#length| |c_~#queue~0.base|)))))) is different from false [2022-12-13 09:29:29,890 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 09:29:29,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 136 treesize of output 97 [2022-12-13 09:29:29,915 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 09:29:29,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 325 treesize of output 327 [2022-12-13 09:29:29,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 311 treesize of output 287 [2022-12-13 09:29:29,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 234 treesize of output 210 [2022-12-13 09:29:29,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 305 treesize of output 293 [2022-12-13 09:29:29,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-12-13 09:29:30,013 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 09:29:30,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 124 treesize of output 116 [2022-12-13 09:29:30,276 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 09:29:30,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 133 treesize of output 94 [2022-12-13 09:29:30,282 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 09:29:30,283 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 09:29:30,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 32 [2022-12-13 09:29:30,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 09:29:30,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 34 [2022-12-13 09:29:38,312 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 09:29:38,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 34 [2022-12-13 09:29:40,232 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 09:29:40,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 77 [2022-12-13 09:29:43,291 INFO L134 CoverageAnalysis]: Checked inductivity of 974 backedges. 88 proven. 198 refuted. 0 times theorem prover too weak. 509 trivial. 179 not checked. [2022-12-13 09:29:43,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771082028] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 09:29:43,292 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 09:29:43,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 23, 25] total 63 [2022-12-13 09:29:43,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207831573] [2022-12-13 09:29:43,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 09:29:43,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-12-13 09:29:43,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:29:43,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-12-13 09:29:43,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=389, Invalid=2669, Unknown=50, NotChecked=798, Total=3906 [2022-12-13 09:29:43,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:29:43,295 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-12-13 09:29:43,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 8.984126984126984) internal successors, (566), 63 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:29:43,296 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:29:43,296 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2022-12-13 09:29:43,296 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:29:43,296 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:29:43,296 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:29:43,296 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:29:43,296 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-12-13 09:29:43,296 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2022-12-13 09:29:43,296 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-12-13 09:29:43,296 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-12-13 09:29:43,297 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:29:43,297 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 40 states. [2022-12-13 09:29:43,297 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2022-12-13 09:29:43,297 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:29:48,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:29:50,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:30:45,621 WARN L233 SmtUtils]: Spent 9.15s on a formula simplification. DAG size of input: 130 DAG size of output: 84 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 09:31:01,131 WARN L233 SmtUtils]: Spent 12.71s on a formula simplification. DAG size of input: 130 DAG size of output: 84 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 09:31:05,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:31:05,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 09:31:05,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:31:05,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:31:05,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:31:05,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:31:05,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 09:31:05,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 09:31:05,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 09:31:05,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 09:31:05,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:31:05,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-12-13 09:31:05,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-13 09:31:05,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-13 09:31:05,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-13 09:31:05,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 09:31:05,545 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 09:31:05,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:31:05,546 INFO L85 PathProgramCache]: Analyzing trace with hash -787585431, now seen corresponding path program 4 times [2022-12-13 09:31:05,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:31:05,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008102681] [2022-12-13 09:31:05,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:31:05,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:31:05,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:31:11,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2280 backedges. 1647 proven. 177 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2022-12-13 09:31:11,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:31:11,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008102681] [2022-12-13 09:31:11,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008102681] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 09:31:11,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692312257] [2022-12-13 09:31:11,769 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 09:31:11,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 09:31:11,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 [2022-12-13 09:31:11,770 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 09:31:11,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 09:31:12,971 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 09:31:12,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 09:31:12,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 1438 conjuncts, 109 conjunts are in the unsatisfiable core [2022-12-13 09:31:12,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 09:31:13,455 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 09:31:13,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 09:31:14,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 09:31:14,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 09:31:15,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 09:31:17,056 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 09:31:17,090 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-12-13 09:31:17,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 27 [2022-12-13 09:31:17,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 09:31:17,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 09:31:18,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2022-12-13 09:31:18,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 09:31:18,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 09:31:20,330 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 09:31:20,358 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-12-13 09:31:20,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2022-12-13 09:31:20,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 09:31:20,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 09:31:21,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2022-12-13 09:31:22,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 09:31:22,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 09:31:23,633 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 09:31:23,669 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-12-13 09:31:23,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2022-12-13 09:31:23,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 09:31:23,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 09:31:24,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-13 09:31:24,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2280 backedges. 840 proven. 75 refuted. 0 times theorem prover too weak. 1365 trivial. 0 not checked. [2022-12-13 09:31:24,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 09:34:05,650 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1360 Int) (v_ArrVal_1362 Int) (v_ArrVal_1356 (Array Int Int)) (|v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_116| Int) (v_ArrVal_1364 Int) (v_ArrVal_1366 Int) (v_ArrVal_1363 (Array Int Int)) (v_ArrVal_1357 Int) (v_ArrVal_1368 Int) (v_ArrVal_1370 (Array Int Int))) (let ((.cse3 (+ 84 |c_~#queue~0.offset|)) (.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~#id1~0#1.base| v_ArrVal_1356))) (let ((.cse5 (let ((.cse7 (select .cse6 |c_~#queue~0.base|))) (store .cse7 (+ (* (select .cse7 .cse3) 4) |c_~#queue~0.offset|) v_ArrVal_1357))) (.cse2 (+ 88 |c_~#queue~0.offset|))) (let ((.cse0 (store (store .cse6 |c_~#queue~0.base| (store (store .cse5 .cse2 v_ArrVal_1360) .cse3 v_ArrVal_1362)) |c_~#stored_elements~0.base| v_ArrVal_1363))) (let ((.cse4 (select .cse0 |c_~#queue~0.base|))) (let ((.cse1 (store .cse4 (+ (* |v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_116| 4) |c_~#queue~0.offset|) v_ArrVal_1364))) (or (< (select (select (store (store .cse0 |c_~#queue~0.base| (store (store .cse1 .cse2 v_ArrVal_1366) .cse3 v_ArrVal_1368)) |c_~#stored_elements~0.base| v_ArrVal_1370) |c_~#queue~0.base|) .cse3) 20) (not (<= |v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_116| (select .cse4 .cse3))) (< (+ (select .cse5 .cse3) 1) v_ArrVal_1362) (< (+ (select .cse1 .cse3) 1) v_ArrVal_1368)))))))) is different from false [2022-12-13 09:34:06,600 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1360 Int) (v_ArrVal_1362 Int) (v_ArrVal_1356 (Array Int Int)) (|v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_116| Int) (v_ArrVal_1364 Int) (v_ArrVal_1355 Int) (v_ArrVal_1366 Int) (v_ArrVal_1363 (Array Int Int)) (v_ArrVal_1357 Int) (v_ArrVal_1368 Int) (v_ArrVal_1370 (Array Int Int))) (let ((.cse3 (+ 84 |c_~#queue~0.offset|)) (.cse6 (store (store |c_#memory_int| |c_ULTIMATE.start_init_~q#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_init_~q#1.base|) (+ 88 |c_ULTIMATE.start_init_~q#1.offset|) v_ArrVal_1355)) |c_ULTIMATE.start_main_~#id1~0#1.base| v_ArrVal_1356))) (let ((.cse5 (let ((.cse7 (select .cse6 |c_~#queue~0.base|))) (store .cse7 (+ (* 4 (select .cse7 .cse3)) |c_~#queue~0.offset|) v_ArrVal_1357))) (.cse2 (+ 88 |c_~#queue~0.offset|))) (let ((.cse0 (store (store .cse6 |c_~#queue~0.base| (store (store .cse5 .cse2 v_ArrVal_1360) .cse3 v_ArrVal_1362)) |c_~#stored_elements~0.base| v_ArrVal_1363))) (let ((.cse4 (select .cse0 |c_~#queue~0.base|))) (let ((.cse1 (store .cse4 (+ (* |v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_116| 4) |c_~#queue~0.offset|) v_ArrVal_1364))) (or (< (select (select (store (store .cse0 |c_~#queue~0.base| (store (store .cse1 .cse2 v_ArrVal_1366) .cse3 v_ArrVal_1368)) |c_~#stored_elements~0.base| v_ArrVal_1370) |c_~#queue~0.base|) .cse3) 20) (not (<= |v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_116| (select .cse4 .cse3))) (< (+ (select .cse1 .cse3) 1) v_ArrVal_1368) (< (+ 1 (select .cse5 .cse3)) v_ArrVal_1362)))))))) is different from false [2022-12-13 09:34:06,647 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 09:34:06,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 463 treesize of output 273 [2022-12-13 09:34:06,684 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 09:34:06,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 366 treesize of output 364 [2022-12-13 09:34:06,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 83 [2022-12-13 09:34:06,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 201 treesize of output 185 [2022-12-13 09:34:06,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 94 [2022-12-13 09:34:06,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-12-13 09:34:06,827 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 09:34:06,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 117 treesize of output 109 [2022-12-13 09:34:08,560 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 09:34:08,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 43 [2022-12-13 09:34:08,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2280 backedges. 840 proven. 67 refuted. 8 times theorem prover too weak. 1365 trivial. 0 not checked. [2022-12-13 09:34:08,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692312257] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 09:34:08,975 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 09:34:08,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 34, 33] total 88 [2022-12-13 09:34:08,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029086799] [2022-12-13 09:34:08,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 09:34:08,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-12-13 09:34:08,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:34:08,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-12-13 09:34:08,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=880, Invalid=6287, Unknown=151, NotChecked=338, Total=7656 [2022-12-13 09:34:08,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:34:08,979 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-12-13 09:34:08,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 6.465909090909091) internal successors, (569), 88 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:34:08,980 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:34:08,980 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2022-12-13 09:34:08,980 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:34:08,980 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:34:08,980 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:34:08,980 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:34:08,980 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-12-13 09:34:08,980 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2022-12-13 09:34:08,980 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-12-13 09:34:08,980 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-12-13 09:34:08,980 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:34:08,980 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 40 states. [2022-12-13 09:34:08,981 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2022-12-13 09:34:08,981 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 42 states. [2022-12-13 09:34:08,981 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:34:30,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:34:34,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:34:41,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:34:44,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:34:49,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:34:53,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:34:55,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:34:58,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:35:00,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:35:03,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:35:06,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:35:21,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 09:35:22,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:35:22,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 09:35:22,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:35:22,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:35:22,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:35:22,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:35:22,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 09:35:22,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 09:35:22,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 09:35:22,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 09:35:22,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:35:22,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-12-13 09:35:22,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-13 09:35:22,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-13 09:35:22,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-12-13 09:35:22,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 09:35:22,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 09:35:22,779 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 09:35:22,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:35:22,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1347259961, now seen corresponding path program 5 times [2022-12-13 09:35:22,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:35:22,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554088252] [2022-12-13 09:35:22,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:35:22,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:35:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:35:38,780 INFO L134 CoverageAnalysis]: Checked inductivity of 4780 backedges. 1978 proven. 486 refuted. 0 times theorem prover too weak. 2316 trivial. 0 not checked. [2022-12-13 09:35:38,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:35:38,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554088252] [2022-12-13 09:35:38,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554088252] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 09:35:38,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710230873] [2022-12-13 09:35:38,781 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 09:35:38,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 09:35:38,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 [2022-12-13 09:35:38,782 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 09:35:38,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3e22d4d-9e81-47da-97b1-df544b4b1c36/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 09:37:18,602 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2022-12-13 09:37:18,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 09:37:18,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 1952 conjuncts, 206 conjunts are in the unsatisfiable core [2022-12-13 09:37:18,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 09:37:19,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 09:37:37,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 09:37:38,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 09:37:38,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 09:37:40,873 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 09:37:40,904 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-12-13 09:37:40,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2022-12-13 09:37:41,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 09:37:41,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 09:37:42,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2022-12-13 09:37:43,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 09:37:43,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 09:37:45,381 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 09:37:45,419 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-12-13 09:37:45,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 27 [2022-12-13 09:37:45,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 09:37:45,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 09:37:47,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2022-12-13 09:37:47,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 09:37:47,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 09:37:49,213 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 09:37:49,248 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-12-13 09:37:49,249 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 27 [2022-12-13 09:37:49,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 09:37:49,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 09:37:50,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2022-12-13 09:37:51,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 09:37:51,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 09:37:53,282 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 09:37:53,319 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-12-13 09:37:53,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 27 [2022-12-13 09:37:53,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 09:37:53,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 09:37:54,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2022-12-13 09:37:55,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 09:37:55,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 09:37:57,006 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 09:37:57,041 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-12-13 09:37:57,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2022-12-13 09:37:57,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 09:37:57,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 09:37:58,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2022-12-13 09:37:59,112 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 09:37:59,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-12-13 09:37:59,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-13 09:37:59,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 09:37:59,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-12-13 09:38:01,392 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-12-13 09:38:01,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 45 [2022-12-13 09:38:01,766 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 09:38:01,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 27 [2022-12-13 09:38:02,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 09:38:02,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-13 09:38:02,472 INFO L134 CoverageAnalysis]: Checked inductivity of 4780 backedges. 2002 proven. 2484 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2022-12-13 09:38:02,472 INFO L328 TraceCheckSpWp]: Computing backward predicates...