./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/config/GemCutterReach.xml -i ../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a5ee9b9286f55973fff2cea9c449f3602c5be2a48fed2e7e6cce6beebc18d9bc --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:09:56,414 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:09:56,498 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/config/svcomp-Reach-32bit-GemCutter_Default.epf [2023-11-24 22:09:56,504 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:09:56,504 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 22:09:56,530 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:09:56,530 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 22:09:56,531 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 22:09:56,532 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 22:09:56,533 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 22:09:56,533 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:09:56,534 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:09:56,535 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 22:09:56,535 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:09:56,536 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 22:09:56,536 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 22:09:56,537 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 22:09:56,537 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 22:09:56,538 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:09:56,538 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 22:09:56,539 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:09:56,540 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 22:09:56,540 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 22:09:56,541 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 22:09:56,541 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:09:56,541 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:09:56,542 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 22:09:56,542 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 22:09:56,543 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 22:09:56,543 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 22:09:56,544 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:09:56,544 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:09:56,545 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 22:09:56,545 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 22:09:56,545 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2023-11-24 22:09:56,546 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 22:09:56,546 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 22:09:56,547 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-11-24 22:09:56,547 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 22:09:56,547 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-11-24 22:09:56,547 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-11-24 22:09:56,549 INFO L153 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_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5ee9b9286f55973fff2cea9c449f3602c5be2a48fed2e7e6cce6beebc18d9bc [2023-11-24 22:09:56,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:09:56,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:09:56,834 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:09:56,835 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:09:56,836 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:09:56,837 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/../../sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i [2023-11-24 22:09:59,997 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:10:00,294 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:10:00,294 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i [2023-11-24 22:10:00,324 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/data/f2cc83793/6efc6c55bfae45709b415c8d70096ba6/FLAGcecec733d [2023-11-24 22:10:00,347 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/data/f2cc83793/6efc6c55bfae45709b415c8d70096ba6 [2023-11-24 22:10:00,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:10:00,356 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:10:00,360 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:10:00,360 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:10:00,365 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:10:00,365 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:10:00" (1/1) ... [2023-11-24 22:10:00,367 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1375e999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:10:00, skipping insertion in model container [2023-11-24 22:10:00,367 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:10:00" (1/1) ... [2023-11-24 22:10:00,415 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:10:00,809 WARN L240 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_4191557a-8b85-42d1-9311-af9629add66c/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i[30440,30453] [2023-11-24 22:10:00,827 WARN L240 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_4191557a-8b85-42d1-9311-af9629add66c/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i[30895,30908] [2023-11-24 22:10:00,835 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:10:00,859 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 22:10:00,899 WARN L240 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_4191557a-8b85-42d1-9311-af9629add66c/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i[30440,30453] [2023-11-24 22:10:00,903 WARN L240 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_4191557a-8b85-42d1-9311-af9629add66c/sv-benchmarks/c/pthread-deagle/circular_buffer_bad.i[30895,30908] [2023-11-24 22:10:00,908 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:10:00,957 INFO L206 MainTranslator]: Completed translation [2023-11-24 22:10:00,958 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:10:00 WrapperNode [2023-11-24 22:10:00,958 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:10:00,960 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 22:10:00,960 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 22:10:00,960 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 22:10:00,968 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:10:00" (1/1) ... [2023-11-24 22:10:01,003 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:10:00" (1/1) ... [2023-11-24 22:10:01,057 INFO L138 Inliner]: procedures = 169, calls = 38, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 140 [2023-11-24 22:10:01,057 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 22:10:01,058 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 22:10:01,058 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 22:10:01,059 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 22:10:01,069 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:10:00" (1/1) ... [2023-11-24 22:10:01,069 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:10:00" (1/1) ... [2023-11-24 22:10:01,084 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:10:00" (1/1) ... [2023-11-24 22:10:01,086 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:10:00" (1/1) ... [2023-11-24 22:10:01,099 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:10:00" (1/1) ... [2023-11-24 22:10:01,111 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:10:00" (1/1) ... [2023-11-24 22:10:01,115 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:10:00" (1/1) ... [2023-11-24 22:10:01,127 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:10:00" (1/1) ... [2023-11-24 22:10:01,130 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 22:10:01,131 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 22:10:01,131 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 22:10:01,132 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 22:10:01,133 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:10:00" (1/1) ... [2023-11-24 22:10:01,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 22:10:01,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:10:01,174 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 22:10:01,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 22:10:01,232 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-24 22:10:01,232 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-24 22:10:01,232 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-24 22:10:01,232 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-24 22:10:01,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 22:10:01,233 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-24 22:10:01,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 22:10:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 22:10:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 22:10:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 22:10:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 22:10:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-24 22:10:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 22:10:01,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 22:10:01,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 22:10:01,239 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 22:10:01,387 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 22:10:01,389 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 22:10:01,673 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 22:10:02,028 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 22:10:02,028 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-24 22:10:02,029 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:10:02 BoogieIcfgContainer [2023-11-24 22:10:02,029 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 22:10:02,033 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 22:10:02,033 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 22:10:02,037 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 22:10:02,038 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 10:10:00" (1/3) ... [2023-11-24 22:10:02,039 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f0b9f13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:10:02, skipping insertion in model container [2023-11-24 22:10:02,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:10:00" (2/3) ... [2023-11-24 22:10:02,039 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f0b9f13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:10:02, skipping insertion in model container [2023-11-24 22:10:02,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:10:02" (3/3) ... [2023-11-24 22:10:02,041 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_bad.i [2023-11-24 22:10:02,051 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-24 22:10:02,064 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 22:10:02,065 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-24 22:10:02,065 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 22:10:02,164 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-24 22:10:02,226 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:10:02,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:10:02,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:10:02,236 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:10:02,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2023-11-24 22:10:02,292 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:10:02,325 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t1Thread1of1ForFork1 ======== [2023-11-24 22:10:02,332 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=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@69973a71, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:10:02,332 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 22:10:03,737 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:10:03,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:10:03,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1324442895, now seen corresponding path program 1 times [2023-11-24 22:10:03,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:10:03,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929837183] [2023-11-24 22:10:03,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:10:03,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:10:03,966 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 22:10:03,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [741190573] [2023-11-24 22:10:03,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:10:03,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:10:03,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:10:04,004 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:10:04,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 22:10:04,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:10:04,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 22:10:04,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:10:04,306 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:10:04,307 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:10:04,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:10:04,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929837183] [2023-11-24 22:10:04,309 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 22:10:04,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741190573] [2023-11-24 22:10:04,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741190573] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:10:04,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:10:04,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 22:10:04,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845706576] [2023-11-24 22:10:04,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:10:04,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:10:04,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:10:04,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:10:04,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:10:04,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:10:04,354 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:10:04,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:10:04,356 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:10:04,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:04,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 22:10:04,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-24 22:10:04,745 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:10:04,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:10:04,746 INFO L85 PathProgramCache]: Analyzing trace with hash 945741605, now seen corresponding path program 1 times [2023-11-24 22:10:04,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:10:04,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884664551] [2023-11-24 22:10:04,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:10:04,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:10:04,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:10:04,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:10:04,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884664551] [2023-11-24 22:10:04,926 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-24 22:10:04,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404902469] [2023-11-24 22:10:04,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:10:04,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:10:04,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:10:04,928 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:10:04,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 22:10:05,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:10:05,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 22:10:05,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:10:05,312 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-24 22:10:05,313 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:10:05,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404902469] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:10:05,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:10:05,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 22:10:05,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752421445] [2023-11-24 22:10:05,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:10:05,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:10:05,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:10:05,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:10:05,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:10:05,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:10:05,318 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:10:05,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:10:05,319 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:05,319 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:10:05,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:05,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:05,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 22:10:05,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:10:05,787 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:10:05,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:10:05,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1527975550, now seen corresponding path program 1 times [2023-11-24 22:10:05,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:10:05,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598714416] [2023-11-24 22:10:05,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:10:05,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:10:05,838 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 22:10:05,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [10471060] [2023-11-24 22:10:05,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:10:05,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:10:05,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:10:05,845 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:10:05,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 22:10:06,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:10:06,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 22:10:06,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:10:06,064 INFO L378 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 11 treesize of output 7 [2023-11-24 22:10:06,075 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-24 22:10:06,075 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:10:06,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:10:06,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598714416] [2023-11-24 22:10:06,076 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 22:10:06,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10471060] [2023-11-24 22:10:06,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10471060] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:10:06,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:10:06,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 22:10:06,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148597360] [2023-11-24 22:10:06,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:10:06,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:10:06,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:10:06,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:10:06,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:10:06,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:10:06,079 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:10:06,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:10:06,080 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:06,080 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:06,080 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:10:06,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:06,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:06,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:06,174 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-24 22:10:06,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:10:06,369 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:10:06,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:10:06,369 INFO L85 PathProgramCache]: Analyzing trace with hash 888484601, now seen corresponding path program 1 times [2023-11-24 22:10:06,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:10:06,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177892446] [2023-11-24 22:10:06,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:10:06,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:10:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:10:06,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:10:06,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177892446] [2023-11-24 22:10:06,456 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-24 22:10:06,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544598985] [2023-11-24 22:10:06,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:10:06,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:10:06,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:10:06,458 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:10:06,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 22:10:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:10:06,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 22:10:06,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:10:06,644 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:10:06,644 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:10:06,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544598985] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:10:06,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:10:06,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 22:10:06,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301981528] [2023-11-24 22:10:06,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:10:06,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:10:06,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:10:06,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:10:06,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:10:06,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:10:06,648 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:10:06,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:10:06,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:06,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:06,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:06,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:10:06,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:06,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:06,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:06,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:06,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 22:10:06,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:10:06,940 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:10:06,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:10:06,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1310186668, now seen corresponding path program 1 times [2023-11-24 22:10:06,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:10:06,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192936991] [2023-11-24 22:10:06,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:10:06,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:10:06,967 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 22:10:06,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [353659270] [2023-11-24 22:10:06,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:10:06,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:10:06,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:10:06,969 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:10:06,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-24 22:10:07,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:10:07,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 22:10:07,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:10:07,440 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:10:07,441 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:10:07,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:10:07,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192936991] [2023-11-24 22:10:07,442 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 22:10:07,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353659270] [2023-11-24 22:10:07,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353659270] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:10:07,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:10:07,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 22:10:07,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561730303] [2023-11-24 22:10:07,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:10:07,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 22:10:07,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:10:07,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 22:10:07,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 22:10:07,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:10:07,447 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:10:07,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:10:07,447 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:07,448 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:07,448 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:07,448 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:07,448 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:10:09,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:09,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:09,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:09,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:09,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:09,825 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-24 22:10:09,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-24 22:10:10,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:10:10,040 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-24 22:10:10,042 INFO L307 ceAbstractionStarter]: Result for error location t1Thread1of1ForFork1 was SAFE (1/3) [2023-11-24 22:10:10,048 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:10:10,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:10:10,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:10:10,051 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:10:10,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (8)] Waiting until timeout for monitored process [2023-11-24 22:10:10,057 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:10:10,058 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-24 22:10:10,059 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=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@69973a71, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:10:10,059 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-24 22:10:12,317 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-11-24 22:10:12,318 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-11-24 22:10:12,322 INFO L445 BasicCegarLoop]: Path program histogram: [] [2023-11-24 22:10:12,324 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE,SAFE (2/3) [2023-11-24 22:10:12,327 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:10:12,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:10:12,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:10:12,334 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:10:12,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (9)] Waiting until timeout for monitored process [2023-11-24 22:10:12,350 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:10:12,351 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t2Thread1of1ForFork0 ======== [2023-11-24 22:10:12,351 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=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@69973a71, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:10:12,351 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 22:10:13,590 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:10:13,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:10:13,591 INFO L85 PathProgramCache]: Analyzing trace with hash 599742884, now seen corresponding path program 1 times [2023-11-24 22:10:13,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:10:13,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344353144] [2023-11-24 22:10:13,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:10:13,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:10:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:10:13,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:10:13,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:10:13,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344353144] [2023-11-24 22:10:13,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344353144] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:10:13,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:10:13,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:10:13,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000947608] [2023-11-24 22:10:13,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:10:13,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:10:13,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:10:13,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:10:13,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:10:13,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:10:13,769 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:10:13,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:10:13,770 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:10:13,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:13,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 22:10:13,870 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:10:13,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:10:13,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1392096946, now seen corresponding path program 1 times [2023-11-24 22:10:13,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:10:13,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066106950] [2023-11-24 22:10:13,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:10:13,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:10:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:10:14,135 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-24 22:10:14,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:10:14,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066106950] [2023-11-24 22:10:14,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066106950] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:10:14,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:10:14,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 22:10:14,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637270332] [2023-11-24 22:10:14,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:10:14,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:10:14,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:10:14,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:10:14,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:10:14,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:10:14,140 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:10:14,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:10:14,141 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:14,141 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:10:14,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:14,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:14,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 22:10:14,214 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:10:14,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:10:14,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1838467984, now seen corresponding path program 1 times [2023-11-24 22:10:14,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:10:14,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197257082] [2023-11-24 22:10:14,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:10:14,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:10:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:10:14,315 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-24 22:10:14,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:10:14,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197257082] [2023-11-24 22:10:14,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197257082] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:10:14,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:10:14,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 22:10:14,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862895522] [2023-11-24 22:10:14,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:10:14,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:10:14,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:10:14,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:10:14,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:10:14,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:10:14,318 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:10:14,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:10:14,318 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:14,318 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:14,319 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:10:14,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:14,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:14,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:14,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 22:10:14,415 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:10:14,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:10:14,416 INFO L85 PathProgramCache]: Analyzing trace with hash 246061280, now seen corresponding path program 1 times [2023-11-24 22:10:14,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:10:14,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293901974] [2023-11-24 22:10:14,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:10:14,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:10:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:10:14,491 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-24 22:10:14,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:10:14,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293901974] [2023-11-24 22:10:14,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293901974] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:10:14,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:10:14,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 22:10:14,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670477595] [2023-11-24 22:10:14,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:10:14,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:10:14,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:10:14,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:10:14,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:10:14,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:10:14,496 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:10:14,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:10:14,497 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:14,497 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:14,497 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:14,498 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:10:14,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:14,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:14,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:14,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:14,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 22:10:14,604 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:10:14,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:10:14,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1043605464, now seen corresponding path program 1 times [2023-11-24 22:10:14,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:10:14,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734853026] [2023-11-24 22:10:14,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:10:14,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:10:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:10:14,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:10:14,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:10:14,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734853026] [2023-11-24 22:10:14,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734853026] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:10:14,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:10:14,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:10:14,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163117088] [2023-11-24 22:10:14,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:10:14,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:10:14,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:10:14,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:10:14,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:10:14,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:10:14,873 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:10:14,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:10:14,874 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:14,874 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:14,874 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:14,874 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:14,875 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:10:14,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:14,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:14,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:14,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:14,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:14,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 22:10:14,964 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:10:14,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:10:14,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1019686366, now seen corresponding path program 1 times [2023-11-24 22:10:14,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:10:14,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526003565] [2023-11-24 22:10:14,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:10:14,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:10:14,990 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 22:10:14,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [752119409] [2023-11-24 22:10:14,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:10:14,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:10:14,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:10:14,998 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:10:15,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-24 22:10:15,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:10:15,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 22:10:15,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:10:15,378 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-24 22:10:15,378 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:10:15,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:10:15,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526003565] [2023-11-24 22:10:15,379 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 22:10:15,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752119409] [2023-11-24 22:10:15,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752119409] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:10:15,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:10:15,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 22:10:15,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602361572] [2023-11-24 22:10:15,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:10:15,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 22:10:15,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:10:15,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 22:10:15,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 22:10:15,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:10:15,386 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:10:15,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:10:15,386 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:15,387 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:15,387 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:15,387 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:15,387 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:15,387 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:10:15,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:15,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:15,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:15,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:15,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:15,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:10:15,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-24 22:10:15,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-24 22:10:15,664 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:10:15,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:10:15,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1744275397, now seen corresponding path program 1 times [2023-11-24 22:10:15,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:10:15,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043945238] [2023-11-24 22:10:15,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:10:15,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:10:15,695 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 22:10:15,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1983237210] [2023-11-24 22:10:15,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:10:15,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:10:15,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:10:15,697 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:10:15,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-24 22:10:16,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:10:16,974 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:10:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:10:17,293 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-24 22:10:17,294 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 22:10:17,294 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-24 22:10:17,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-24 22:10:17,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-24 22:10:17,510 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:10:17,510 INFO L307 ceAbstractionStarter]: Result for error location t2Thread1of1ForFork0 was UNSAFE (3/3) [2023-11-24 22:10:17,513 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-24 22:10:17,513 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 22:10:17,596 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre11 could not be translated [2023-11-24 22:10:17,598 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre13 could not be translated [2023-11-24 22:10:17,599 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem15 could not be translated [2023-11-24 22:10:17,628 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 10:10:17 BasicIcfg [2023-11-24 22:10:17,628 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 22:10:17,629 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 22:10:17,629 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 22:10:17,629 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 22:10:17,630 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:10:02" (3/4) ... [2023-11-24 22:10:17,631 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-24 22:10:17,677 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre11 could not be translated [2023-11-24 22:10:17,678 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre13 could not be translated [2023-11-24 22:10:17,679 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem15 could not be translated [2023-11-24 22:10:17,745 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/witness.graphml [2023-11-24 22:10:17,745 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 22:10:17,746 INFO L158 Benchmark]: Toolchain (without parser) took 17390.61ms. Allocated memory was 161.5MB in the beginning and 262.1MB in the end (delta: 100.7MB). Free memory was 110.9MB in the beginning and 154.1MB in the end (delta: -43.2MB). Peak memory consumption was 58.9MB. Max. memory is 16.1GB. [2023-11-24 22:10:17,746 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 161.5MB. Free memory was 131.1MB in the beginning and 131.0MB in the end (delta: 98.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:10:17,747 INFO L158 Benchmark]: CACSL2BoogieTranslator took 598.80ms. Allocated memory is still 161.5MB. Free memory was 110.9MB in the beginning and 90.0MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-24 22:10:17,747 INFO L158 Benchmark]: Boogie Procedure Inliner took 98.00ms. Allocated memory is still 161.5MB. Free memory was 90.0MB in the beginning and 87.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 22:10:17,748 INFO L158 Benchmark]: Boogie Preprocessor took 72.32ms. Allocated memory is still 161.5MB. Free memory was 87.4MB in the beginning and 85.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 22:10:17,748 INFO L158 Benchmark]: RCFGBuilder took 898.13ms. Allocated memory was 161.5MB in the beginning and 218.1MB in the end (delta: 56.6MB). Free memory was 85.7MB in the beginning and 177.4MB in the end (delta: -91.7MB). Peak memory consumption was 42.8MB. Max. memory is 16.1GB. [2023-11-24 22:10:17,749 INFO L158 Benchmark]: TraceAbstraction took 15595.95ms. Allocated memory was 218.1MB in the beginning and 262.1MB in the end (delta: 44.0MB). Free memory was 176.5MB in the beginning and 166.7MB in the end (delta: 9.8MB). Peak memory consumption was 56.0MB. Max. memory is 16.1GB. [2023-11-24 22:10:17,752 INFO L158 Benchmark]: Witness Printer took 116.42ms. Allocated memory is still 262.1MB. Free memory was 166.7MB in the beginning and 154.1MB in the end (delta: 12.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-24 22:10:17,755 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 161.5MB. Free memory was 131.1MB in the beginning and 131.0MB in the end (delta: 98.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 598.80ms. Allocated memory is still 161.5MB. Free memory was 110.9MB in the beginning and 90.0MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 98.00ms. Allocated memory is still 161.5MB. Free memory was 90.0MB in the beginning and 87.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.32ms. Allocated memory is still 161.5MB. Free memory was 87.4MB in the beginning and 85.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 898.13ms. Allocated memory was 161.5MB in the beginning and 218.1MB in the end (delta: 56.6MB). Free memory was 85.7MB in the beginning and 177.4MB in the end (delta: -91.7MB). Peak memory consumption was 42.8MB. Max. memory is 16.1GB. * TraceAbstraction took 15595.95ms. Allocated memory was 218.1MB in the beginning and 262.1MB in the end (delta: 44.0MB). Free memory was 176.5MB in the beginning and 166.7MB in the end (delta: 9.8MB). Peak memory consumption was 56.0MB. Max. memory is 16.1GB. * Witness Printer took 116.42ms. Allocated memory is still 262.1MB. Free memory was 166.7MB in the beginning and 154.1MB in the end (delta: 12.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre13 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem15 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre13 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem15 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation #1 benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 5179, independent: 4427, independent conditional: 3339, independent unconditional: 1088, dependent: 749, dependent conditional: 731, dependent unconditional: 18, unknown: 3, unknown conditional: 1, unknown unconditional: 2] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4503, independent: 4427, independent conditional: 3339, independent unconditional: 1088, dependent: 73, dependent conditional: 55, dependent unconditional: 18, unknown: 3, unknown conditional: 1, unknown unconditional: 2] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 4503, independent: 4427, independent conditional: 3339, independent unconditional: 1088, dependent: 73, dependent conditional: 55, dependent unconditional: 18, unknown: 3, unknown conditional: 1, unknown unconditional: 2] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4734, independent: 4427, independent conditional: 34, independent unconditional: 4393, dependent: 301, dependent conditional: 194, dependent unconditional: 107, unknown: 6, unknown conditional: 3, unknown unconditional: 3] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 4734, independent: 4427, independent conditional: 34, independent unconditional: 4393, dependent: 301, dependent conditional: 45, dependent unconditional: 256, unknown: 6, unknown conditional: 1, unknown unconditional: 5] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 4734, independent: 4427, independent conditional: 34, independent unconditional: 4393, dependent: 301, dependent conditional: 45, dependent unconditional: 256, unknown: 6, unknown conditional: 1, unknown unconditional: 5] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 810, independent: 783, independent conditional: 5, independent unconditional: 778, dependent: 24, dependent conditional: 6, dependent unconditional: 18, unknown: 3, unknown conditional: 1, unknown unconditional: 2] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 810, independent: 769, independent conditional: 0, independent unconditional: 769, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 41, independent: 14, independent conditional: 5, independent unconditional: 9, dependent: 24, dependent conditional: 6, dependent unconditional: 18, unknown: 3, unknown conditional: 1, unknown unconditional: 2] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 41, independent: 14, independent conditional: 5, independent unconditional: 9, dependent: 24, dependent conditional: 6, dependent unconditional: 18, unknown: 3, unknown conditional: 1, unknown unconditional: 2] , SemanticIndependenceRelation.Query Time [ms]: [ total: 3502, independent: 76, independent conditional: 38, independent unconditional: 37, dependent: 220, dependent conditional: 35, dependent unconditional: 186, unknown: 3206, unknown conditional: 1043, unknown unconditional: 2163] , Protected Queries: 0 ], Cache Queries: [ total: 4734, independent: 3644, independent conditional: 29, independent unconditional: 3615, dependent: 277, dependent conditional: 39, dependent unconditional: 238, unknown: 813, unknown conditional: 12, unknown unconditional: 801] , Statistics on independence cache: Total cache size (in pairs): 807, Positive cache size: 783, Positive conditional cache size: 5, Positive unconditional cache size: 778, Negative cache size: 24, Negative conditional cache size: 6, Negative unconditional cache size: 18, Unknown cache size: 3, Unknown conditional cache size: 1, Unknown unconditional cache size: 2, Eliminated conditions: 151, Maximal queried relation: 5, Independence queries for same thread: 676 - StatisticsResult: Persistent set benchmarks Persistent set computation time: 2.5s, Number of persistent set computation: 306, Number of trivial persistent sets: 282, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1108, independent: 1088, independent conditional: 0, independent unconditional: 1088, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 5179, independent: 4427, independent conditional: 3339, independent unconditional: 1088, dependent: 749, dependent conditional: 731, dependent unconditional: 18, unknown: 3, unknown conditional: 1, unknown unconditional: 2] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4503, independent: 4427, independent conditional: 3339, independent unconditional: 1088, dependent: 73, dependent conditional: 55, dependent unconditional: 18, unknown: 3, unknown conditional: 1, unknown unconditional: 2] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 4503, independent: 4427, independent conditional: 3339, independent unconditional: 1088, dependent: 73, dependent conditional: 55, dependent unconditional: 18, unknown: 3, unknown conditional: 1, unknown unconditional: 2] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4734, independent: 4427, independent conditional: 34, independent unconditional: 4393, dependent: 301, dependent conditional: 194, dependent unconditional: 107, unknown: 6, unknown conditional: 3, unknown unconditional: 3] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 4734, independent: 4427, independent conditional: 34, independent unconditional: 4393, dependent: 301, dependent conditional: 45, dependent unconditional: 256, unknown: 6, unknown conditional: 1, unknown unconditional: 5] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 4734, independent: 4427, independent conditional: 34, independent unconditional: 4393, dependent: 301, dependent conditional: 45, dependent unconditional: 256, unknown: 6, unknown conditional: 1, unknown unconditional: 5] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 810, independent: 783, independent conditional: 5, independent unconditional: 778, dependent: 24, dependent conditional: 6, dependent unconditional: 18, unknown: 3, unknown conditional: 1, unknown unconditional: 2] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 810, independent: 769, independent conditional: 0, independent unconditional: 769, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 41, independent: 14, independent conditional: 5, independent unconditional: 9, dependent: 24, dependent conditional: 6, dependent unconditional: 18, unknown: 3, unknown conditional: 1, unknown unconditional: 2] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 41, independent: 14, independent conditional: 5, independent unconditional: 9, dependent: 24, dependent conditional: 6, dependent unconditional: 18, unknown: 3, unknown conditional: 1, unknown unconditional: 2] , SemanticIndependenceRelation.Query Time [ms]: [ total: 3502, independent: 76, independent conditional: 38, independent unconditional: 37, dependent: 220, dependent conditional: 35, dependent unconditional: 186, unknown: 3206, unknown conditional: 1043, unknown unconditional: 2163] , Protected Queries: 0 ], Cache Queries: [ total: 4734, independent: 3644, independent conditional: 29, independent unconditional: 3615, dependent: 277, dependent conditional: 39, dependent unconditional: 238, unknown: 813, unknown conditional: 12, unknown unconditional: 801] , Statistics on independence cache: Total cache size (in pairs): 807, Positive cache size: 783, Positive conditional cache size: 5, Positive unconditional cache size: 778, Negative cache size: 24, Negative conditional cache size: 6, Negative unconditional cache size: 18, Unknown cache size: 3, Unknown conditional cache size: 1, Unknown unconditional cache size: 2, Eliminated conditions: 151, Maximal queried relation: 5, Independence queries for same thread: 676 - StatisticsResult: Independence relation #1 benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 486, independent: 468, independent conditional: 20, independent unconditional: 448, dependent: 15, dependent conditional: 8, dependent unconditional: 7, unknown: 3, unknown conditional: 1, unknown unconditional: 2] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 478, independent: 468, independent conditional: 20, independent unconditional: 448, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 3, unknown conditional: 1, unknown unconditional: 2] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 478, independent: 468, independent conditional: 20, independent unconditional: 448, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 3, unknown conditional: 1, unknown unconditional: 2] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 478, independent: 468, independent conditional: 0, independent unconditional: 468, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 478, independent: 468, independent conditional: 0, independent unconditional: 468, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 478, independent: 468, independent conditional: 0, independent unconditional: 468, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 419, independent: 410, independent conditional: 0, independent unconditional: 410, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 419, independent: 407, independent conditional: 0, independent unconditional: 407, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 12, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 12, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2246, independent: 9, independent conditional: 0, independent unconditional: 9, dependent: 80, dependent conditional: 0, dependent unconditional: 80, unknown: 2157, unknown conditional: 0, unknown unconditional: 2157] , Protected Queries: 0 ], Cache Queries: [ total: 478, independent: 58, independent conditional: 0, independent unconditional: 58, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 420, unknown conditional: 0, unknown unconditional: 420] , Statistics on independence cache: Total cache size (in pairs): 417, Positive cache size: 410, Positive conditional cache size: 0, Positive unconditional cache size: 410, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 2, Unknown conditional cache size: 0, Unknown unconditional cache size: 2, Eliminated conditions: 0, Maximal queried relation: 0, Independence queries for same thread: 8 - StatisticsResult: Persistent set benchmarks Persistent set computation time: 2.3s, Number of persistent set computation: 19, Number of trivial persistent sets: 17, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 457, independent: 448, independent conditional: 0, independent unconditional: 448, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 486, independent: 468, independent conditional: 20, independent unconditional: 448, dependent: 15, dependent conditional: 8, dependent unconditional: 7, unknown: 3, unknown conditional: 1, unknown unconditional: 2] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 478, independent: 468, independent conditional: 20, independent unconditional: 448, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 3, unknown conditional: 1, unknown unconditional: 2] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 478, independent: 468, independent conditional: 20, independent unconditional: 448, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 3, unknown conditional: 1, unknown unconditional: 2] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 478, independent: 468, independent conditional: 0, independent unconditional: 468, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 478, independent: 468, independent conditional: 0, independent unconditional: 468, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 478, independent: 468, independent conditional: 0, independent unconditional: 468, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 419, independent: 410, independent conditional: 0, independent unconditional: 410, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 419, independent: 407, independent conditional: 0, independent unconditional: 407, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 12, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 12, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2246, independent: 9, independent conditional: 0, independent unconditional: 9, dependent: 80, dependent conditional: 0, dependent unconditional: 80, unknown: 2157, unknown conditional: 0, unknown unconditional: 2157] , Protected Queries: 0 ], Cache Queries: [ total: 478, independent: 58, independent conditional: 0, independent unconditional: 58, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 420, unknown conditional: 0, unknown unconditional: 420] , Statistics on independence cache: Total cache size (in pairs): 417, Positive cache size: 410, Positive conditional cache size: 0, Positive unconditional cache size: 410, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 2, Unknown conditional cache size: 0, Unknown unconditional cache size: 2, Eliminated conditions: 0, Maximal queried relation: 0, Independence queries for same thread: 8 - StatisticsResult: Independence relation #1 benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 2189, independent: 1892, independent conditional: 955, independent unconditional: 937, dependent: 296, dependent conditional: 279, dependent unconditional: 17, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1925, independent: 1892, independent conditional: 955, independent unconditional: 937, dependent: 32, dependent conditional: 15, dependent unconditional: 17, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1925, independent: 1892, independent conditional: 955, independent unconditional: 937, dependent: 32, dependent conditional: 15, dependent unconditional: 17, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1983, independent: 1892, independent conditional: 9, independent unconditional: 1883, dependent: 90, dependent conditional: 49, dependent unconditional: 41, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1983, independent: 1892, independent conditional: 9, independent unconditional: 1883, dependent: 90, dependent conditional: 11, dependent unconditional: 79, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1983, independent: 1892, independent conditional: 9, independent unconditional: 1883, dependent: 90, dependent conditional: 11, dependent unconditional: 79, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 699, independent: 679, independent conditional: 2, independent unconditional: 677, dependent: 19, dependent conditional: 2, dependent unconditional: 17, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 699, independent: 668, independent conditional: 0, independent unconditional: 668, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 31, independent: 11, independent conditional: 2, independent unconditional: 9, dependent: 19, dependent conditional: 2, dependent unconditional: 17, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 31, independent: 11, independent conditional: 2, independent unconditional: 9, dependent: 19, dependent conditional: 2, dependent unconditional: 17, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1254, independent: 29, independent conditional: 5, independent unconditional: 25, dependent: 138, dependent conditional: 5, dependent unconditional: 133, unknown: 1087, unknown conditional: 0, unknown unconditional: 1087] , Protected Queries: 0 ], Cache Queries: [ total: 1983, independent: 1213, independent conditional: 7, independent unconditional: 1206, dependent: 71, dependent conditional: 9, dependent unconditional: 62, unknown: 699, unknown conditional: 4, unknown unconditional: 695] , Statistics on independence cache: Total cache size (in pairs): 698, Positive cache size: 679, Positive conditional cache size: 2, Positive unconditional cache size: 677, Negative cache size: 19, Negative conditional cache size: 2, Negative unconditional cache size: 17, Unknown cache size: 1, Unknown conditional cache size: 0, Unknown unconditional cache size: 1, Eliminated conditions: 38, Maximal queried relation: 4, Independence queries for same thread: 264 - StatisticsResult: Persistent set benchmarks Persistent set computation time: 1.3s, Number of persistent set computation: 132, Number of trivial persistent sets: 115, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 955, independent: 937, independent conditional: 0, independent unconditional: 937, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 2189, independent: 1892, independent conditional: 955, independent unconditional: 937, dependent: 296, dependent conditional: 279, dependent unconditional: 17, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1925, independent: 1892, independent conditional: 955, independent unconditional: 937, dependent: 32, dependent conditional: 15, dependent unconditional: 17, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1925, independent: 1892, independent conditional: 955, independent unconditional: 937, dependent: 32, dependent conditional: 15, dependent unconditional: 17, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1983, independent: 1892, independent conditional: 9, independent unconditional: 1883, dependent: 90, dependent conditional: 49, dependent unconditional: 41, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1983, independent: 1892, independent conditional: 9, independent unconditional: 1883, dependent: 90, dependent conditional: 11, dependent unconditional: 79, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1983, independent: 1892, independent conditional: 9, independent unconditional: 1883, dependent: 90, dependent conditional: 11, dependent unconditional: 79, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 699, independent: 679, independent conditional: 2, independent unconditional: 677, dependent: 19, dependent conditional: 2, dependent unconditional: 17, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 699, independent: 668, independent conditional: 0, independent unconditional: 668, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 31, independent: 11, independent conditional: 2, independent unconditional: 9, dependent: 19, dependent conditional: 2, dependent unconditional: 17, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 31, independent: 11, independent conditional: 2, independent unconditional: 9, dependent: 19, dependent conditional: 2, dependent unconditional: 17, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1254, independent: 29, independent conditional: 5, independent unconditional: 25, dependent: 138, dependent conditional: 5, dependent unconditional: 133, unknown: 1087, unknown conditional: 0, unknown unconditional: 1087] , Protected Queries: 0 ], Cache Queries: [ total: 1983, independent: 1213, independent conditional: 7, independent unconditional: 1206, dependent: 71, dependent conditional: 9, dependent unconditional: 62, unknown: 699, unknown conditional: 4, unknown unconditional: 695] , Statistics on independence cache: Total cache size (in pairs): 698, Positive cache size: 679, Positive conditional cache size: 2, Positive unconditional cache size: 677, Negative cache size: 19, Negative conditional cache size: 2, Negative unconditional cache size: 17, Unknown cache size: 1, Unknown conditional cache size: 0, Unknown unconditional cache size: 1, Eliminated conditions: 38, Maximal queried relation: 4, Independence queries for same thread: 264 - PositiveResult [Line: 713]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - CounterExampleResult [Line: 746]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L682] 0 static char buffer[10]; [L683] 0 static unsigned int first; [L684] 0 static unsigned int next; [L685] 0 static int buffer_size; [L686] 0 _Bool send, receive; [L687] 0 pthread_mutex_t m; [L756] 0 pthread_t id1, id2; [L758] CALL 0 initLog(10) [L690] 0 buffer_size = max [L691] EXPR 0 next = 0 [L691] 0 first = next = 0 [L758] RET 0 initLog(10) [L759] 0 send=1 [L760] 0 receive=0 [L761] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [buffer={3:0}, buffer_size=10, first=0, id1={5:0}, id2={6:0}, m={4:0}, next=0, receive=0, send=1] [L723] 1 int i; [L724] 1 i=0 VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L762] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [buffer={3:0}, buffer_size=10, first=0, id1={5:0}, id2={6:0}, m={4:0}, next=0, receive=0, send=1] [L739] 2 int i; [L740] 2 i=0 VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L763] 0 \read(id1) VAL [buffer={3:0}, buffer_size=10, first=0, id1={5:0}, id2={6:0}, m={4:0}, next=0, receive=0, send=1] [L724] COND TRUE 1 i<7 VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=0, i=0, m={4:0}, next=0, receive=0, send=1] [L727] COND TRUE 1 \read(send) [L729] CALL 1 insertLogElement(i) [L707] COND TRUE 1 next < buffer_size && buffer_size > 0 [L709] 1 buffer[next] = b [L710] 1 next = (next+1)%buffer_size VAL [\old(b)=0, b=0, buffer={3:0}, buffer_size=10, first=0, m={4:0}, next=1, receive=0, send=1] [L712] COND TRUE 1 next 0 && first < buffer_size [L697] 2 first++ [L698] EXPR 2 buffer[first-1] [L698] 2 return buffer[first-1]; [L745] RET, EXPR 2 removeLogElement() [L745] COND TRUE 2 removeLogElement()==i [L747] 2 receive=0 [L748] 2 send=1 VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=1, i=0, m={4:0}, next=1, receive=0, send=1] [L740] 2 i++ VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=1, i=1, m={4:0}, next=1, receive=0, send=1] [L724] COND TRUE 1 i<7 VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=1, i=1, m={4:0}, next=1, receive=0, send=1] [L740] COND TRUE 2 i<7 VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=1, i=1, m={4:0}, next=1, receive=0, send=1] [L743] COND FALSE 2 !(\read(receive)) VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=1, i=1, m={4:0}, next=1, receive=0, send=1] [L727] COND TRUE 1 \read(send) [L729] CALL 1 insertLogElement(i) [L707] COND TRUE 1 next < buffer_size && buffer_size > 0 [L709] 1 buffer[next] = b [L710] 1 next = (next+1)%buffer_size VAL [\old(b)=1, b=1, buffer={3:0}, buffer_size=10, first=1, m={4:0}, next=2, receive=0, send=1] [L712] COND TRUE 1 next 0 && first < buffer_size [L697] 2 first++ [L698] EXPR 2 buffer[first-1] [L698] 2 return buffer[first-1]; [L745] RET, EXPR 2 removeLogElement() [L745] COND FALSE 2 !(removeLogElement()==i) [L746] 2 reach_error() VAL [arg={0:0}, arg={0:0}, buffer={3:0}, buffer_size=10, first=2, i=2, m={4:0}, next=2, receive=1, send=0] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: t1Thread1of1ForFork1 with 1 thread instances CFG has 5 procedures, 64 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 7.8s, OverallIterations: 5, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 4.4s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 289 NumberOfCodeBlocks, 289 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 196 ConstructedInterpolants, 1 QuantifiedInterpolants, 660 SizeOfPredicates, 4 NumberOfNonLiveVariables, 1433 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 120/120 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 64 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 0, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 2.3s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: t2Thread1of1ForFork0 with 1 thread instances CFG has 5 procedures, 64 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 5.2s, OverallIterations: 7, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 1.8s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 268 NumberOfCodeBlocks, 268 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 214 ConstructedInterpolants, 0 QuantifiedInterpolants, 795 SizeOfPredicates, 0 NumberOfNonLiveVariables, 303 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 121/121 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-24 22:10:17,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (9)] Forceful destruction successful, exit code 0 [2023-11-24 22:10:18,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (8)] Forceful destruction successful, exit code 0 [2023-11-24 22:10:18,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2023-11-24 22:10:18,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4191557a-8b85-42d1-9311-af9629add66c/bin/ugemcutter-verify-oI9GxRtH0S/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE