./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/unroll-4.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_407ebc7b-8fa2-4e9b-8108-c9bbe62ee4b2/bin/ugemcutter-rbreBovr8w/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407ebc7b-8fa2-4e9b-8108-c9bbe62ee4b2/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_407ebc7b-8fa2-4e9b-8108-c9bbe62ee4b2/bin/ugemcutter-rbreBovr8w/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407ebc7b-8fa2-4e9b-8108-c9bbe62ee4b2/bin/ugemcutter-rbreBovr8w/config/GemCutterReach.xml -i ../../sv-benchmarks/c/weaver/unroll-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407ebc7b-8fa2-4e9b-8108-c9bbe62ee4b2/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_407ebc7b-8fa2-4e9b-8108-c9bbe62ee4b2/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 7071c3ff0bb3d9f81f254bc51d27ce3551a85cc081b1b878560a7d4c8f67639e --- 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 09:25:12,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 09:25:12,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 09:25:12,068 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 09:25:12,068 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 09:25:12,069 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 09:25:12,071 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 09:25:12,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 09:25:12,073 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 09:25:12,074 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 09:25:12,075 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 09:25:12,076 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 09:25:12,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 09:25:12,077 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 09:25:12,078 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 09:25:12,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 09:25:12,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 09:25:12,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 09:25:12,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 09:25:12,084 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 09:25:12,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 09:25:12,086 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 09:25:12,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 09:25:12,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 09:25:12,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 09:25:12,096 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 09:25:12,096 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 09:25:12,097 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 09:25:12,098 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 09:25:12,099 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 09:25:12,099 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 09:25:12,100 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 09:25:12,100 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 09:25:12,101 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 09:25:12,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 09:25:12,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 09:25:12,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 09:25:12,103 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 09:25:12,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 09:25:12,104 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 09:25:12,105 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 09:25:12,105 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407ebc7b-8fa2-4e9b-8108-c9bbe62ee4b2/bin/ugemcutter-rbreBovr8w/config/svcomp-Reach-32bit-GemCutter_Default.epf [2022-12-13 09:25:12,126 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 09:25:12,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 09:25:12,126 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 09:25:12,126 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 09:25:12,127 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 09:25:12,127 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 09:25:12,128 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 09:25:12,128 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 09:25:12,132 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 09:25:12,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 09:25:12,132 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 09:25:12,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 09:25:12,133 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 09:25:12,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 09:25:12,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 09:25:12,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 09:25:12,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 09:25:12,133 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 09:25:12,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 09:25:12,134 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 09:25:12,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 09:25:12,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 09:25:12,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 09:25:12,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 09:25:12,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 09:25:12,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 09:25:12,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 09:25:12,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 09:25:12,135 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 09:25:12,135 INFO L138 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2022-12-13 09:25:12,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 09:25:12,136 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-13 09:25:12,136 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-12-13 09:25:12,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 09:25:12,136 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2022-12-13 09:25:12,136 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2022-12-13 09:25:12,136 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_407ebc7b-8fa2-4e9b-8108-c9bbe62ee4b2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407ebc7b-8fa2-4e9b-8108-c9bbe62ee4b2/bin/ugemcutter-rbreBovr8w Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7071c3ff0bb3d9f81f254bc51d27ce3551a85cc081b1b878560a7d4c8f67639e [2022-12-13 09:25:12,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 09:25:12,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 09:25:12,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 09:25:12,332 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 09:25:12,332 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 09:25:12,333 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407ebc7b-8fa2-4e9b-8108-c9bbe62ee4b2/bin/ugemcutter-rbreBovr8w/../../sv-benchmarks/c/weaver/unroll-4.wvr.c [2022-12-13 09:25:14,866 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 09:25:15,027 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 09:25:15,028 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407ebc7b-8fa2-4e9b-8108-c9bbe62ee4b2/sv-benchmarks/c/weaver/unroll-4.wvr.c [2022-12-13 09:25:15,033 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407ebc7b-8fa2-4e9b-8108-c9bbe62ee4b2/bin/ugemcutter-rbreBovr8w/data/237957076/3f41f8e79e744d07bd9357b90fcd3139/FLAGeccc706e7 [2022-12-13 09:25:15,044 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407ebc7b-8fa2-4e9b-8108-c9bbe62ee4b2/bin/ugemcutter-rbreBovr8w/data/237957076/3f41f8e79e744d07bd9357b90fcd3139 [2022-12-13 09:25:15,046 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 09:25:15,047 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 09:25:15,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 09:25:15,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 09:25:15,051 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 09:25:15,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:25:15" (1/1) ... [2022-12-13 09:25:15,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57c881c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:25:15, skipping insertion in model container [2022-12-13 09:25:15,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:25:15" (1/1) ... [2022-12-13 09:25:15,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 09:25:15,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 09:25:15,213 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_407ebc7b-8fa2-4e9b-8108-c9bbe62ee4b2/sv-benchmarks/c/weaver/unroll-4.wvr.c[2572,2585] [2022-12-13 09:25:15,221 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 09:25:15,230 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 09:25:15,250 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_407ebc7b-8fa2-4e9b-8108-c9bbe62ee4b2/sv-benchmarks/c/weaver/unroll-4.wvr.c[2572,2585] [2022-12-13 09:25:15,254 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 09:25:15,268 INFO L208 MainTranslator]: Completed translation [2022-12-13 09:25:15,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:25:15 WrapperNode [2022-12-13 09:25:15,268 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 09:25:15,269 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 09:25:15,270 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 09:25:15,270 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 09:25:15,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:25:15" (1/1) ... [2022-12-13 09:25:15,283 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:25:15" (1/1) ... [2022-12-13 09:25:15,308 INFO L138 Inliner]: procedures = 24, calls = 36, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 154 [2022-12-13 09:25:15,308 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 09:25:15,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 09:25:15,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 09:25:15,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 09:25:15,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:25:15" (1/1) ... [2022-12-13 09:25:15,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:25:15" (1/1) ... [2022-12-13 09:25:15,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:25:15" (1/1) ... [2022-12-13 09:25:15,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:25:15" (1/1) ... [2022-12-13 09:25:15,326 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:25:15" (1/1) ... [2022-12-13 09:25:15,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:25:15" (1/1) ... [2022-12-13 09:25:15,332 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:25:15" (1/1) ... [2022-12-13 09:25:15,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:25:15" (1/1) ... [2022-12-13 09:25:15,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 09:25:15,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 09:25:15,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 09:25:15,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 09:25:15,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:25:15" (1/1) ... [2022-12-13 09:25:15,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 09:25:15,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407ebc7b-8fa2-4e9b-8108-c9bbe62ee4b2/bin/ugemcutter-rbreBovr8w/z3 [2022-12-13 09:25:15,362 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407ebc7b-8fa2-4e9b-8108-c9bbe62ee4b2/bin/ugemcutter-rbreBovr8w/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 09:25:15,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407ebc7b-8fa2-4e9b-8108-c9bbe62ee4b2/bin/ugemcutter-rbreBovr8w/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 09:25:15,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 09:25:15,391 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 09:25:15,391 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 09:25:15,391 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 09:25:15,391 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 09:25:15,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 09:25:15,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 09:25:15,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 09:25:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 09:25:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 09:25:15,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 09:25:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 09:25:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 09:25:15,394 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 09:25:15,473 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 09:25:15,475 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 09:25:15,709 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 09:25:15,716 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 09:25:15,716 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 09:25:15,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:25:15 BoogieIcfgContainer [2022-12-13 09:25:15,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 09:25:15,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 09:25:15,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 09:25:15,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 09:25:15,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:25:15" (1/3) ... [2022-12-13 09:25:15,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ab76e56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:25:15, skipping insertion in model container [2022-12-13 09:25:15,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:25:15" (2/3) ... [2022-12-13 09:25:15,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ab76e56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:25:15, skipping insertion in model container [2022-12-13 09:25:15,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:25:15" (3/3) ... [2022-12-13 09:25:15,724 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-4.wvr.c [2022-12-13 09:25:15,730 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 09:25:15,738 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 09:25:15,738 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 09:25:15,738 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 09:25:15,802 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 09:25:15,838 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 09:25:15,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-12-13 09:25:15,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407ebc7b-8fa2-4e9b-8108-c9bbe62ee4b2/bin/ugemcutter-rbreBovr8w/z3 [2022-12-13 09:25:15,840 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407ebc7b-8fa2-4e9b-8108-c9bbe62ee4b2/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-12-13 09:25:15,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407ebc7b-8fa2-4e9b-8108-c9bbe62ee4b2/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-12-13 09:25:15,878 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-12-13 09:25:15,893 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2022-12-13 09:25:15,899 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;@755e9736, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 09:25:15,900 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-13 09:25:16,130 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 09:25:16,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:25:16,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1974096875, now seen corresponding path program 1 times [2022-12-13 09:25:16,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:25:16,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930521666] [2022-12-13 09:25:16,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:25:16,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:25:16,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:25:16,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 09:25:16,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:25:16,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930521666] [2022-12-13 09:25:16,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930521666] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:25:16,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:25:16,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 09:25:16,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454537615] [2022-12-13 09:25:16,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:25:16,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 09:25:16,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:25:16,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 09:25:16,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 09:25:16,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:25:16,340 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-12-13 09:25:16,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 57.5) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:25:16,341 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:25:16,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:25:16,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 09:25:16,377 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 09:25:16,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:25:16,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1511756183, now seen corresponding path program 1 times [2022-12-13 09:25:16,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:25:16,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170297926] [2022-12-13 09:25:16,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:25:16,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:25:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:25:16,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:25:16,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:25:16,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170297926] [2022-12-13 09:25:16,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170297926] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:25:16,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:25:16,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 09:25:16,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88809236] [2022-12-13 09:25:16,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:25:16,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 09:25:16,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:25:16,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 09:25:16,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 09:25:16,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:25:16,700 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-12-13 09:25:16,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 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 09:25:16,700 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:25:16,700 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:25:16,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:25:16,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 09:25:16,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 09:25:16,767 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 09:25:16,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:25:16,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1831892750, now seen corresponding path program 1 times [2022-12-13 09:25:16,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:25:16,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739599552] [2022-12-13 09:25:16,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:25:16,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:25:16,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:25:17,270 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:25:17,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:25:17,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739599552] [2022-12-13 09:25:17,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739599552] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 09:25:17,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953038063] [2022-12-13 09:25:17,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:25:17,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 09:25:17,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407ebc7b-8fa2-4e9b-8108-c9bbe62ee4b2/bin/ugemcutter-rbreBovr8w/z3 [2022-12-13 09:25:17,302 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407ebc7b-8fa2-4e9b-8108-c9bbe62ee4b2/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 09:25:17,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407ebc7b-8fa2-4e9b-8108-c9bbe62ee4b2/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 09:25:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:25:17,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 09:25:17,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 09:25:17,679 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 09:25:17,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 09:25:17,919 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 09:25:17,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953038063] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 09:25:17,920 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 09:25:17,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2022-12-13 09:25:17,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247309802] [2022-12-13 09:25:17,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 09:25:17,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 09:25:17,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:25:17,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 09:25:17,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-12-13 09:25:17,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:25:17,924 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-12-13 09:25:17,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 18.58823529411765) internal successors, (316), 17 states have internal predecessors, (316), 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 09:25:17,925 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:25:17,925 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-12-13 09:25:17,925 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:25:18,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:25:18,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 09:25:18,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 09:25:18,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407ebc7b-8fa2-4e9b-8108-c9bbe62ee4b2/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 09:25:18,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407ebc7b-8fa2-4e9b-8108-c9bbe62ee4b2/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 09:25:18,777 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 09:25:18,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:25:18,778 INFO L85 PathProgramCache]: Analyzing trace with hash -356399117, now seen corresponding path program 1 times [2022-12-13 09:25:18,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:25:18,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101436919] [2022-12-13 09:25:18,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:25:18,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:25:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:25:19,954 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 3 proven. 189 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 09:25:19,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:25:19,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101436919] [2022-12-13 09:25:19,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101436919] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 09:25:19,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934553050] [2022-12-13 09:25:19,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:25:19,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 09:25:19,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407ebc7b-8fa2-4e9b-8108-c9bbe62ee4b2/bin/ugemcutter-rbreBovr8w/z3 [2022-12-13 09:25:19,956 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407ebc7b-8fa2-4e9b-8108-c9bbe62ee4b2/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 09:25:19,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407ebc7b-8fa2-4e9b-8108-c9bbe62ee4b2/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 09:25:20,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:25:20,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 56 conjunts are in the unsatisfiable core [2022-12-13 09:25:20,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 09:25:22,814 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 09:25:22,817 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 09:25:22,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 16 [2022-12-13 09:25:22,949 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-12-13 09:25:22,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 09:25:25,090 INFO L321 Elim1Store]: treesize reduction 5, result has 95.7 percent of original size [2022-12-13 09:25:25,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 137 [2022-12-13 09:25:30,470 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 193 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:25:30,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934553050] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 09:25:30,470 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 09:25:30,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 29, 28] total 69 [2022-12-13 09:25:30,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575354988] [2022-12-13 09:25:30,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 09:25:30,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-12-13 09:25:30,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:25:30,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-12-13 09:25:30,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=4410, Unknown=0, NotChecked=0, Total=4692 [2022-12-13 09:25:30,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:25:30,479 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-12-13 09:25:30,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 10.695652173913043) internal successors, (738), 69 states have internal predecessors, (738), 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 09:25:30,480 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:25:30,480 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-12-13 09:25:30,480 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2022-12-13 09:25:30,480 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:25:35,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 09:25:35,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 09:25:35,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 09:25:35,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-12-13 09:25:35,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407ebc7b-8fa2-4e9b-8108-c9bbe62ee4b2/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 09:25:35,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407ebc7b-8fa2-4e9b-8108-c9bbe62ee4b2/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 09:25:35,745 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 09:25:35,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:25:35,746 INFO L85 PathProgramCache]: Analyzing trace with hash -729397102, now seen corresponding path program 2 times [2022-12-13 09:25:35,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:25:35,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376097061] [2022-12-13 09:25:35,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:25:35,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:25:35,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:25:37,542 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 4 proven. 376 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 09:25:37,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:25:37,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376097061] [2022-12-13 09:25:37,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376097061] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 09:25:37,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860488518] [2022-12-13 09:25:37,543 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 09:25:37,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 09:25:37,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407ebc7b-8fa2-4e9b-8108-c9bbe62ee4b2/bin/ugemcutter-rbreBovr8w/z3 [2022-12-13 09:25:37,544 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407ebc7b-8fa2-4e9b-8108-c9bbe62ee4b2/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 09:25:37,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407ebc7b-8fa2-4e9b-8108-c9bbe62ee4b2/bin/ugemcutter-rbreBovr8w/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 09:25:37,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 09:25:37,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 09:25:37,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 220 conjunts are in the unsatisfiable core [2022-12-13 09:25:37,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 09:25:38,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 09:25:39,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 09:25:39,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 09:25:50,883 INFO L321 Elim1Store]: treesize reduction 100, result has 17.4 percent of original size [2022-12-13 09:25:50,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 91 treesize of output 64 [2022-12-13 09:25:51,242 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 47 proven. 296 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-13 09:25:51,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 09:29:03,492 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 09:29:03,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 7126 treesize of output 3898 [2022-12-13 09:29:13,785 WARN L233 SmtUtils]: Spent 10.26s on a formula simplification that was a NOOP. DAG size: 807 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-13 09:29:13,785 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 09:29:13,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 20 select indices, 20 select index equivalence classes, 0 disjoint index pairs (out of 190 index pairs), introduced 38 new quantified variables, introduced 190 case distinctions, treesize of input 8456 treesize of output 8108 [2022-12-13 09:29:29,711 WARN L233 SmtUtils]: Spent 14.75s on a formula simplification that was a NOOP. DAG size: 807 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-13 09:29:29,712 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 09:29:29,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 20 select indices, 20 select index equivalence classes, 0 disjoint index pairs (out of 190 index pairs), introduced 38 new quantified variables, introduced 190 case distinctions, treesize of input 6296 treesize of output 4868 [2022-12-13 09:29:49,128 WARN L233 SmtUtils]: Spent 16.47s on a formula simplification that was a NOOP. DAG size: 807 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-13 09:29:49,129 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 09:29:49,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 20 select indices, 20 select index equivalence classes, 0 disjoint index pairs (out of 190 index pairs), introduced 38 new quantified variables, introduced 190 case distinctions, treesize of input 2321 treesize of output 2513