./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/bench-exp2x6.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e69690-be82-4778-aac0-53f1178d3f30/bin/ugemcutter-rbreBovr8w/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e69690-be82-4778-aac0-53f1178d3f30/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_a4e69690-be82-4778-aac0-53f1178d3f30/bin/ugemcutter-rbreBovr8w/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e69690-be82-4778-aac0-53f1178d3f30/bin/ugemcutter-rbreBovr8w/config/GemCutterReach.xml -i ../../sv-benchmarks/c/weaver/bench-exp2x6.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e69690-be82-4778-aac0-53f1178d3f30/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_a4e69690-be82-4778-aac0-53f1178d3f30/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 19006bb1633253053764e43b8bfff1653449498b05ea53714e3311a41e35d730 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 09:31:21,917 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 09:31:21,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 09:31:21,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 09:31:21,937 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 09:31:21,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 09:31:21,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 09:31:21,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 09:31:21,941 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 09:31:21,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 09:31:21,943 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 09:31:21,944 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 09:31:21,944 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 09:31:21,945 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 09:31:21,946 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 09:31:21,947 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 09:31:21,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 09:31:21,948 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 09:31:21,950 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 09:31:21,951 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 09:31:21,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 09:31:21,954 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 09:31:21,955 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 09:31:21,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 09:31:21,959 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 09:31:21,959 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 09:31:21,959 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 09:31:21,960 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 09:31:21,961 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 09:31:21,962 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 09:31:21,962 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 09:31:21,963 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 09:31:21,963 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 09:31:21,964 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 09:31:21,965 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 09:31:21,965 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 09:31:21,966 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 09:31:21,966 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 09:31:21,966 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 09:31:21,967 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 09:31:21,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 09:31:21,968 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e69690-be82-4778-aac0-53f1178d3f30/bin/ugemcutter-rbreBovr8w/config/svcomp-Reach-32bit-GemCutter_Default.epf [2022-12-13 09:31:21,987 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 09:31:21,987 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 09:31:21,987 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 09:31:21,988 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 09:31:21,988 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 09:31:21,988 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 09:31:21,989 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 09:31:21,989 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 09:31:21,989 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 09:31:21,989 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 09:31:22,002 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 09:31:22,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 09:31:22,002 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 09:31:22,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 09:31:22,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 09:31:22,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 09:31:22,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 09:31:22,003 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 09:31:22,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 09:31:22,004 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 09:31:22,004 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 09:31:22,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 09:31:22,004 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 09:31:22,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 09:31:22,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 09:31:22,005 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 09:31:22,005 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 09:31:22,005 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 09:31:22,005 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 09:31:22,006 INFO L138 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2022-12-13 09:31:22,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 09:31:22,006 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-13 09:31:22,006 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-12-13 09:31:22,006 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 09:31:22,007 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2022-12-13 09:31:22,007 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2022-12-13 09:31:22,007 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_a4e69690-be82-4778-aac0-53f1178d3f30/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e69690-be82-4778-aac0-53f1178d3f30/bin/ugemcutter-rbreBovr8w Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19006bb1633253053764e43b8bfff1653449498b05ea53714e3311a41e35d730 [2022-12-13 09:31:22,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 09:31:22,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 09:31:22,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 09:31:22,194 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 09:31:22,194 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 09:31:22,195 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e69690-be82-4778-aac0-53f1178d3f30/bin/ugemcutter-rbreBovr8w/../../sv-benchmarks/c/weaver/bench-exp2x6.wvr.c [2022-12-13 09:31:24,775 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 09:31:24,912 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 09:31:24,913 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e69690-be82-4778-aac0-53f1178d3f30/sv-benchmarks/c/weaver/bench-exp2x6.wvr.c [2022-12-13 09:31:24,917 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e69690-be82-4778-aac0-53f1178d3f30/bin/ugemcutter-rbreBovr8w/data/daa50f104/b68eb9cf9a1442f2bea5b535455a6dbd/FLAG5e077317b [2022-12-13 09:31:25,334 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e69690-be82-4778-aac0-53f1178d3f30/bin/ugemcutter-rbreBovr8w/data/daa50f104/b68eb9cf9a1442f2bea5b535455a6dbd [2022-12-13 09:31:25,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 09:31:25,337 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 09:31:25,338 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 09:31:25,338 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 09:31:25,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 09:31:25,342 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:31:25" (1/1) ... [2022-12-13 09:31:25,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39f3c22a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:31:25, skipping insertion in model container [2022-12-13 09:31:25,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:31:25" (1/1) ... [2022-12-13 09:31:25,349 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 09:31:25,361 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 09:31:25,471 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_a4e69690-be82-4778-aac0-53f1178d3f30/sv-benchmarks/c/weaver/bench-exp2x6.wvr.c[2453,2466] [2022-12-13 09:31:25,474 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 09:31:25,480 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 09:31:25,496 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_a4e69690-be82-4778-aac0-53f1178d3f30/sv-benchmarks/c/weaver/bench-exp2x6.wvr.c[2453,2466] [2022-12-13 09:31:25,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 09:31:25,506 INFO L208 MainTranslator]: Completed translation [2022-12-13 09:31:25,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:31:25 WrapperNode [2022-12-13 09:31:25,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 09:31:25,507 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 09:31:25,507 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 09:31:25,507 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 09:31:25,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:31:25" (1/1) ... [2022-12-13 09:31:25,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:31:25" (1/1) ... [2022-12-13 09:31:25,530 INFO L138 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 91 [2022-12-13 09:31:25,531 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 09:31:25,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 09:31:25,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 09:31:25,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 09:31:25,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:31:25" (1/1) ... [2022-12-13 09:31:25,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:31:25" (1/1) ... [2022-12-13 09:31:25,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:31:25" (1/1) ... [2022-12-13 09:31:25,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:31:25" (1/1) ... [2022-12-13 09:31:25,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:31:25" (1/1) ... [2022-12-13 09:31:25,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:31:25" (1/1) ... [2022-12-13 09:31:25,546 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:31:25" (1/1) ... [2022-12-13 09:31:25,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:31:25" (1/1) ... [2022-12-13 09:31:25,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 09:31:25,549 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 09:31:25,549 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 09:31:25,550 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 09:31:25,550 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:31:25" (1/1) ... [2022-12-13 09:31:25,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 09:31:25,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e69690-be82-4778-aac0-53f1178d3f30/bin/ugemcutter-rbreBovr8w/z3 [2022-12-13 09:31:25,570 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e69690-be82-4778-aac0-53f1178d3f30/bin/ugemcutter-rbreBovr8w/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 09:31:25,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e69690-be82-4778-aac0-53f1178d3f30/bin/ugemcutter-rbreBovr8w/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 09:31:25,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 09:31:25,595 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 09:31:25,595 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 09:31:25,595 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 09:31:25,595 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 09:31:25,596 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 09:31:25,596 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 09:31:25,596 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-13 09:31:25,596 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-13 09:31:25,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 09:31:25,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 09:31:25,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 09:31:25,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 09:31:25,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 09:31:25,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 09:31:25,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 09:31:25,598 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 09:31:25,665 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 09:31:25,667 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 09:31:25,830 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 09:31:25,836 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 09:31:25,836 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 09:31:25,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:31:25 BoogieIcfgContainer [2022-12-13 09:31:25,838 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 09:31:25,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 09:31:25,840 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 09:31:25,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 09:31:25,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:31:25" (1/3) ... [2022-12-13 09:31:25,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@304273a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:31:25, skipping insertion in model container [2022-12-13 09:31:25,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:31:25" (2/3) ... [2022-12-13 09:31:25,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@304273a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:31:25, skipping insertion in model container [2022-12-13 09:31:25,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:31:25" (3/3) ... [2022-12-13 09:31:25,844 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp2x6.wvr.c [2022-12-13 09:31:25,851 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 09:31:25,866 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 09:31:25,866 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 09:31:25,866 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 09:31:25,945 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 09:31:25,979 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 09:31:25,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-12-13 09:31:25,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e69690-be82-4778-aac0-53f1178d3f30/bin/ugemcutter-rbreBovr8w/z3 [2022-12-13 09:31:25,980 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e69690-be82-4778-aac0-53f1178d3f30/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-12-13 09:31:25,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e69690-be82-4778-aac0-53f1178d3f30/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-12-13 09:31:26,016 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-12-13 09:31:26,028 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2022-12-13 09:31:26,033 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;@65445f1d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 09:31:26,033 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-13 09:31:26,294 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 09:31:26,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:31:26,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1721737292, now seen corresponding path program 1 times [2022-12-13 09:31:26,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:31:26,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873058262] [2022-12-13 09:31:26,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:31:26,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:31:26,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:31:26,530 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-13 09:31:26,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:31:26,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873058262] [2022-12-13 09:31:26,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873058262] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:31:26,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:31:26,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 09:31:26,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600835218] [2022-12-13 09:31:26,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:31:26,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 09:31:26,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:31:26,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 09:31:26,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 09:31:26,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:31:26,559 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-12-13 09:31:26,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 54.5) internal successors, (109), 2 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:31:26,560 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:31:26,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:31:26,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 09:31:26,596 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 09:31:26,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:31:26,597 INFO L85 PathProgramCache]: Analyzing trace with hash -488532144, now seen corresponding path program 1 times [2022-12-13 09:31:26,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:31:26,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141900588] [2022-12-13 09:31:26,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:31:26,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:31:26,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:31:27,168 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 09:31:27,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:31:27,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141900588] [2022-12-13 09:31:27,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141900588] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:31:27,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:31:27,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 09:31:27,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781502410] [2022-12-13 09:31:27,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:31:27,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 09:31:27,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:31:27,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 09:31:27,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 09:31:27,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:31:27,173 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-12-13 09:31:27,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:31:27,173 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:31:27,173 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:31:27,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:31:27,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 09:31:27,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 09:31:27,536 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 09:31:27,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:31:27,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1369193694, now seen corresponding path program 1 times [2022-12-13 09:31:27,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:31:27,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146430918] [2022-12-13 09:31:27,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:31:27,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms