./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/bench-exp2x3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_61c6b208-e09a-4cd9-ae57-7eb03c21f3bd/bin/ugemcutter-rbreBovr8w/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c6b208-e09a-4cd9-ae57-7eb03c21f3bd/bin/ugemcutter-rbreBovr8w/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c6b208-e09a-4cd9-ae57-7eb03c21f3bd/bin/ugemcutter-rbreBovr8w/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c6b208-e09a-4cd9-ae57-7eb03c21f3bd/bin/ugemcutter-rbreBovr8w/config/GemCutterReach.xml -i ../../sv-benchmarks/c/weaver/bench-exp2x3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c6b208-e09a-4cd9-ae57-7eb03c21f3bd/bin/ugemcutter-rbreBovr8w/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c6b208-e09a-4cd9-ae57-7eb03c21f3bd/bin/ugemcutter-rbreBovr8w --witnessprinter.witness.filename witness.graphml --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 ebb6bba6491ab996b2a2d1f88baf86906cd5ba5ce7e0ad4dc20017ded9089a97 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 07:00:39,815 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 07:00:39,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 07:00:39,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 07:00:39,837 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 07:00:39,838 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 07:00:39,839 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 07:00:39,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 07:00:39,843 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 07:00:39,844 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 07:00:39,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 07:00:39,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 07:00:39,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 07:00:39,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 07:00:39,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 07:00:39,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 07:00:39,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 07:00:39,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 07:00:39,853 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 07:00:39,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 07:00:39,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 07:00:39,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 07:00:39,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 07:00:39,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 07:00:39,863 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 07:00:39,863 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 07:00:39,864 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 07:00:39,865 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 07:00:39,865 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 07:00:39,866 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 07:00:39,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 07:00:39,867 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 07:00:39,868 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 07:00:39,869 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 07:00:39,869 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 07:00:39,870 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 07:00:39,870 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 07:00:39,870 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 07:00:39,871 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 07:00:39,871 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 07:00:39,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 07:00:39,873 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c6b208-e09a-4cd9-ae57-7eb03c21f3bd/bin/ugemcutter-rbreBovr8w/config/svcomp-Reach-32bit-GemCutter_Default.epf [2022-12-13 07:00:39,893 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 07:00:39,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 07:00:39,894 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 07:00:39,894 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 07:00:39,895 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 07:00:39,895 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 07:00:39,896 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 07:00:39,896 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 07:00:39,896 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 07:00:39,896 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 07:00:39,896 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 07:00:39,896 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 07:00:39,897 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 07:00:39,897 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 07:00:39,897 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 07:00:39,897 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 07:00:39,897 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 07:00:39,898 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 07:00:39,898 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 07:00:39,898 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 07:00:39,898 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 07:00:39,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 07:00:39,899 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 07:00:39,899 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 07:00:39,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 07:00:39,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 07:00:39,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 07:00:39,900 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 07:00:39,900 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 07:00:39,900 INFO L138 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2022-12-13 07:00:39,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 07:00:39,900 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-13 07:00:39,901 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-12-13 07:00:39,901 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 07:00:39,901 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2022-12-13 07:00:39,901 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2022-12-13 07:00:39,901 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c6b208-e09a-4cd9-ae57-7eb03c21f3bd/bin/ugemcutter-rbreBovr8w/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c6b208-e09a-4cd9-ae57-7eb03c21f3bd/bin/ugemcutter-rbreBovr8w Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebb6bba6491ab996b2a2d1f88baf86906cd5ba5ce7e0ad4dc20017ded9089a97 [2022-12-13 07:00:40,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 07:00:40,077 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 07:00:40,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 07:00:40,079 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 07:00:40,080 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 07:00:40,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c6b208-e09a-4cd9-ae57-7eb03c21f3bd/bin/ugemcutter-rbreBovr8w/../../sv-benchmarks/c/weaver/bench-exp2x3.wvr.c [2022-12-13 07:00:42,609 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 07:00:42,766 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 07:00:42,767 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c6b208-e09a-4cd9-ae57-7eb03c21f3bd/sv-benchmarks/c/weaver/bench-exp2x3.wvr.c [2022-12-13 07:00:42,773 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c6b208-e09a-4cd9-ae57-7eb03c21f3bd/bin/ugemcutter-rbreBovr8w/data/77641aab1/c5e97ebbd048412b97d43f1bcb757308/FLAGd2e77c42d [2022-12-13 07:00:43,187 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c6b208-e09a-4cd9-ae57-7eb03c21f3bd/bin/ugemcutter-rbreBovr8w/data/77641aab1/c5e97ebbd048412b97d43f1bcb757308 [2022-12-13 07:00:43,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 07:00:43,190 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 07:00:43,191 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 07:00:43,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 07:00:43,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 07:00:43,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:00:43" (1/1) ... [2022-12-13 07:00:43,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3683b001 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:00:43, skipping insertion in model container [2022-12-13 07:00:43,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:00:43" (1/1) ... [2022-12-13 07:00:43,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 07:00:43,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 07:00:43,342 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c6b208-e09a-4cd9-ae57-7eb03c21f3bd/sv-benchmarks/c/weaver/bench-exp2x3.wvr.c[2237,2250] [2022-12-13 07:00:43,346 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 07:00:43,356 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 07:00:43,370 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c6b208-e09a-4cd9-ae57-7eb03c21f3bd/sv-benchmarks/c/weaver/bench-exp2x3.wvr.c[2237,2250] [2022-12-13 07:00:43,371 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 07:00:43,381 INFO L208 MainTranslator]: Completed translation [2022-12-13 07:00:43,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:00:43 WrapperNode [2022-12-13 07:00:43,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 07:00:43,382 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 07:00:43,382 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 07:00:43,382 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 07:00:43,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:00:43" (1/1) ... [2022-12-13 07:00:43,392 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:00:43" (1/1) ... [2022-12-13 07:00:43,406 INFO L138 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 91 [2022-12-13 07:00:43,406 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 07:00:43,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 07:00:43,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 07:00:43,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 07:00:43,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:00:43" (1/1) ... [2022-12-13 07:00:43,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:00:43" (1/1) ... [2022-12-13 07:00:43,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:00:43" (1/1) ... [2022-12-13 07:00:43,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:00:43" (1/1) ... [2022-12-13 07:00:43,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:00:43" (1/1) ... [2022-12-13 07:00:43,421 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:00:43" (1/1) ... [2022-12-13 07:00:43,422 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:00:43" (1/1) ... [2022-12-13 07:00:43,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:00:43" (1/1) ... [2022-12-13 07:00:43,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 07:00:43,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 07:00:43,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 07:00:43,425 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 07:00:43,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:00:43" (1/1) ... [2022-12-13 07:00:43,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 07:00:43,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c6b208-e09a-4cd9-ae57-7eb03c21f3bd/bin/ugemcutter-rbreBovr8w/z3 [2022-12-13 07:00:43,448 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c6b208-e09a-4cd9-ae57-7eb03c21f3bd/bin/ugemcutter-rbreBovr8w/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 07:00:43,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c6b208-e09a-4cd9-ae57-7eb03c21f3bd/bin/ugemcutter-rbreBovr8w/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 07:00:43,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 07:00:43,474 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 07:00:43,474 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 07:00:43,474 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 07:00:43,474 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 07:00:43,475 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 07:00:43,475 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 07:00:43,475 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-13 07:00:43,475 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-13 07:00:43,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 07:00:43,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 07:00:43,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 07:00:43,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 07:00:43,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 07:00:43,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 07:00:43,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 07:00:43,476 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 07:00:43,553 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 07:00:43,555 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 07:00:43,708 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 07:00:43,714 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 07:00:43,714 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 07:00:43,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:00:43 BoogieIcfgContainer [2022-12-13 07:00:43,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 07:00:43,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 07:00:43,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 07:00:43,720 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 07:00:43,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:00:43" (1/3) ... [2022-12-13 07:00:43,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5485b0bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:00:43, skipping insertion in model container [2022-12-13 07:00:43,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:00:43" (2/3) ... [2022-12-13 07:00:43,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5485b0bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:00:43, skipping insertion in model container [2022-12-13 07:00:43,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:00:43" (3/3) ... [2022-12-13 07:00:43,723 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp2x3.wvr.c [2022-12-13 07:00:43,729 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 07:00:43,738 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 07:00:43,738 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 07:00:43,738 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 07:00:43,796 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 07:00:43,831 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 07:00:43,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-12-13 07:00:43,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c6b208-e09a-4cd9-ae57-7eb03c21f3bd/bin/ugemcutter-rbreBovr8w/z3 [2022-12-13 07:00:43,832 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c6b208-e09a-4cd9-ae57-7eb03c21f3bd/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-12-13 07:00:43,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c6b208-e09a-4cd9-ae57-7eb03c21f3bd/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-12-13 07:00:43,863 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-12-13 07:00:43,875 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2022-12-13 07:00:43,879 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=LoopsAndPotentialCycles, 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;@6f93cbd5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 07:00:43,880 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-13 07:00:44,078 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 07:00:44,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 07:00:44,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1820584709, now seen corresponding path program 1 times [2022-12-13 07:00:44,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 07:00:44,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119898825] [2022-12-13 07:00:44,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 07:00:44,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 07:00:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 07:00:44,361 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 07:00:44,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 07:00:44,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119898825] [2022-12-13 07:00:44,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119898825] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 07:00:44,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 07:00:44,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 07:00:44,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090376152] [2022-12-13 07:00:44,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 07:00:44,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 07:00:44,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 07:00:44,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 07:00:44,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 07:00:44,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 07:00:44,394 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-12-13 07:00:44,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 50.0) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 07:00:44,395 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 07:00:44,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 07:00:44,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 07:00:44,447 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 07:00:44,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 07:00:44,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1260843582, now seen corresponding path program 1 times [2022-12-13 07:00:44,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 07:00:44,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335581236] [2022-12-13 07:00:44,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 07:00:44,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 07:00:44,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 07:00:45,085 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 07:00:45,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 07:00:45,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335581236] [2022-12-13 07:00:45,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335581236] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 07:00:45,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 07:00:45,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 07:00:45,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705204779] [2022-12-13 07:00:45,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 07:00:45,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 07:00:45,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 07:00:45,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 07:00:45,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 07:00:45,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 07:00:45,089 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-12-13 07:00:45,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 07:00:45,090 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 07:00:45,090 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 07:00:45,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 07:00:45,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 07:00:45,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 07:00:45,390 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 07:00:45,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 07:00:45,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1999970230, now seen corresponding path program 1 times [2022-12-13 07:00:45,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 07:00:45,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297240260] [2022-12-13 07:00:45,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 07:00:45,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 07:00:45,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 07:00:45,981 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 07:00:45,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 07:00:45,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297240260] [2022-12-13 07:00:45,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297240260] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 07:00:45,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638172593] [2022-12-13 07:00:45,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 07:00:45,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 07:00:45,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c6b208-e09a-4cd9-ae57-7eb03c21f3bd/bin/ugemcutter-rbreBovr8w/z3 [2022-12-13 07:00:46,004 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c6b208-e09a-4cd9-ae57-7eb03c21f3bd/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 07:00:46,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61c6b208-e09a-4cd9-ae57-7eb03c21f3bd/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process