./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/mult-dist.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e691f5-8e32-4b1d-acff-02a111a625ff/bin/ugemcutter-verify-SyDpkB78L0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e691f5-8e32-4b1d-acff-02a111a625ff/bin/ugemcutter-verify-SyDpkB78L0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e691f5-8e32-4b1d-acff-02a111a625ff/bin/ugemcutter-verify-SyDpkB78L0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e691f5-8e32-4b1d-acff-02a111a625ff/bin/ugemcutter-verify-SyDpkB78L0/config/GemCutterReach.xml -i ../../sv-benchmarks/c/weaver/mult-dist.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e691f5-8e32-4b1d-acff-02a111a625ff/bin/ugemcutter-verify-SyDpkB78L0/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e691f5-8e32-4b1d-acff-02a111a625ff/bin/ugemcutter-verify-SyDpkB78L0 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c31f1603fd15e011308b2e8fcd1cd45b23f0b00ac0b8b466c4f212460081639c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 14:19:43,010 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 14:19:43,109 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e691f5-8e32-4b1d-acff-02a111a625ff/bin/ugemcutter-verify-SyDpkB78L0/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-11-02 14:19:43,116 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 14:19:43,117 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 14:19:43,149 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 14:19:43,150 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 14:19:43,150 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 14:19:43,151 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 14:19:43,151 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 14:19:43,152 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 14:19:43,153 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 14:19:43,153 INFO L153 SettingsManager]: * Use SBE=true [2024-11-02 14:19:43,153 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 14:19:43,154 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 14:19:43,154 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 14:19:43,154 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 14:19:43,155 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 14:19:43,155 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 14:19:43,155 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 14:19:43,156 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 14:19:43,159 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 14:19:43,159 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 14:19:43,159 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 14:19:43,170 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 14:19:43,171 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 14:19:43,171 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 14:19:43,172 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-02 14:19:43,172 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 14:19:43,173 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 14:19:43,173 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 14:19:43,174 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 14:19:43,174 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 14:19:43,175 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 14:19:43,175 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-02 14:19:43,175 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-11-02 14:19:43,176 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 14:19:43,176 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 14:19:43,176 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-11-02 14:19:43,177 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-11-02 14:19:43,177 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-11-02 14:19:43,178 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e691f5-8e32-4b1d-acff-02a111a625ff/bin/ugemcutter-verify-SyDpkB78L0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e691f5-8e32-4b1d-acff-02a111a625ff/bin/ugemcutter-verify-SyDpkB78L0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c31f1603fd15e011308b2e8fcd1cd45b23f0b00ac0b8b466c4f212460081639c [2024-11-02 14:19:43,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 14:19:43,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 14:19:43,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 14:19:43,530 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 14:19:43,530 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 14:19:43,532 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e691f5-8e32-4b1d-acff-02a111a625ff/bin/ugemcutter-verify-SyDpkB78L0/../../sv-benchmarks/c/weaver/mult-dist.wvr.c Unable to find full path for "g++" [2024-11-02 14:19:45,540 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 14:19:45,748 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 14:19:45,749 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e691f5-8e32-4b1d-acff-02a111a625ff/sv-benchmarks/c/weaver/mult-dist.wvr.c [2024-11-02 14:19:45,758 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e691f5-8e32-4b1d-acff-02a111a625ff/bin/ugemcutter-verify-SyDpkB78L0/data/669967b7d/b493f5d85f354fe7975c7278d5baa398/FLAG9bce8d2b9 [2024-11-02 14:19:46,112 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e691f5-8e32-4b1d-acff-02a111a625ff/bin/ugemcutter-verify-SyDpkB78L0/data/669967b7d/b493f5d85f354fe7975c7278d5baa398 [2024-11-02 14:19:46,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 14:19:46,118 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 14:19:46,119 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 14:19:46,120 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 14:19:46,126 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 14:19:46,127 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 02:19:46" (1/1) ... [2024-11-02 14:19:46,128 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e917f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:19:46, skipping insertion in model container [2024-11-02 14:19:46,129 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 02:19:46" (1/1) ... [2024-11-02 14:19:46,152 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 14:19:46,361 WARN L251 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_64e691f5-8e32-4b1d-acff-02a111a625ff/sv-benchmarks/c/weaver/mult-dist.wvr.c[2155,2168] [2024-11-02 14:19:46,365 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 14:19:46,372 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 14:19:46,392 WARN L251 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_64e691f5-8e32-4b1d-acff-02a111a625ff/sv-benchmarks/c/weaver/mult-dist.wvr.c[2155,2168] [2024-11-02 14:19:46,393 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 14:19:46,411 INFO L204 MainTranslator]: Completed translation [2024-11-02 14:19:46,412 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:19:46 WrapperNode [2024-11-02 14:19:46,412 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 14:19:46,413 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 14:19:46,413 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 14:19:46,413 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 14:19:46,419 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:19:46" (1/1) ... [2024-11-02 14:19:46,425 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:19:46" (1/1) ... [2024-11-02 14:19:46,440 INFO L138 Inliner]: procedures = 21, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2024-11-02 14:19:46,441 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 14:19:46,441 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 14:19:46,442 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 14:19:46,442 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 14:19:46,451 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:19:46" (1/1) ... [2024-11-02 14:19:46,452 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:19:46" (1/1) ... [2024-11-02 14:19:46,453 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:19:46" (1/1) ... [2024-11-02 14:19:46,454 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:19:46" (1/1) ... [2024-11-02 14:19:46,458 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:19:46" (1/1) ... [2024-11-02 14:19:46,462 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:19:46" (1/1) ... [2024-11-02 14:19:46,463 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:19:46" (1/1) ... [2024-11-02 14:19:46,464 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:19:46" (1/1) ... [2024-11-02 14:19:46,466 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 14:19:46,467 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 14:19:46,467 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 14:19:46,467 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 14:19:46,468 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:19:46" (1/1) ... [2024-11-02 14:19:46,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 14:19:46,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e691f5-8e32-4b1d-acff-02a111a625ff/bin/ugemcutter-verify-SyDpkB78L0/z3 [2024-11-02 14:19:46,509 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e691f5-8e32-4b1d-acff-02a111a625ff/bin/ugemcutter-verify-SyDpkB78L0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 14:19:46,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e691f5-8e32-4b1d-acff-02a111a625ff/bin/ugemcutter-verify-SyDpkB78L0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 14:19:46,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 14:19:46,540 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-02 14:19:46,541 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-02 14:19:46,541 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-02 14:19:46,541 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-02 14:19:46,541 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-02 14:19:46,541 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-02 14:19:46,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 14:19:46,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 14:19:46,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 14:19:46,544 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-02 14:19:46,654 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 14:19:46,656 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 14:19:46,858 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-02 14:19:46,858 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 14:19:47,042 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 14:19:47,042 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-02 14:19:47,043 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 02:19:47 BoogieIcfgContainer [2024-11-02 14:19:47,043 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 14:19:47,048 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 14:19:47,048 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 14:19:47,053 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 14:19:47,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 02:19:46" (1/3) ... [2024-11-02 14:19:47,055 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0f3eb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 02:19:47, skipping insertion in model container [2024-11-02 14:19:47,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:19:46" (2/3) ... [2024-11-02 14:19:47,055 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0f3eb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 02:19:47, skipping insertion in model container [2024-11-02 14:19:47,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 02:19:47" (3/3) ... [2024-11-02 14:19:47,057 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-dist.wvr.c [2024-11-02 14:19:47,080 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 14:19:47,080 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 14:19:47,081 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-02 14:19:47,164 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-02 14:19:47,259 INFO L107 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 14:19:47,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-11-02 14:19:47,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e691f5-8e32-4b1d-acff-02a111a625ff/bin/ugemcutter-verify-SyDpkB78L0/z3 [2024-11-02 14:19:47,262 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e691f5-8e32-4b1d-acff-02a111a625ff/bin/ugemcutter-verify-SyDpkB78L0/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-11-02 14:19:47,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e691f5-8e32-4b1d-acff-02a111a625ff/bin/ugemcutter-verify-SyDpkB78L0/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2024-11-02 14:19:47,308 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-11-02 14:19:47,326 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-11-02 14:19:47,335 INFO L333 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, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@72bd4932, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 14:19:47,335 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-02 14:19:48,024 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-02 14:19:48,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 14:19:48,033 INFO L85 PathProgramCache]: Analyzing trace with hash 465831969, now seen corresponding path program 1 times [2024-11-02 14:19:48,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-02 14:19:48,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269581648] [2024-11-02 14:19:48,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 14:19:48,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 14:19:48,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 14:19:49,637 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 14:19:49,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-02 14:19:49,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269581648] [2024-11-02 14:19:49,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269581648] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 14:19:49,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172590312] [2024-11-02 14:19:49,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 14:19:49,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 14:19:49,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e691f5-8e32-4b1d-acff-02a111a625ff/bin/ugemcutter-verify-SyDpkB78L0/z3 [2024-11-02 14:19:49,649 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e691f5-8e32-4b1d-acff-02a111a625ff/bin/ugemcutter-verify-SyDpkB78L0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 14:19:49,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e691f5-8e32-4b1d-acff-02a111a625ff/bin/ugemcutter-verify-SyDpkB78L0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 14:19:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 14:19:49,774 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-02 14:19:49,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 14:19:50,202 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 14:19:50,202 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 14:19:51,276 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 14:19:51,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172590312] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 14:19:51,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 14:19:51,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2024-11-02 14:19:51,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456770568] [2024-11-02 14:19:51,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 14:19:51,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-02 14:19:51,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-02 14:19:51,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-02 14:19:51,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2024-11-02 14:19:51,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 14:19:51,318 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-02 14:19:51,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 14:19:51,320 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-02 14:19:55,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 14:19:55,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-02 14:19:55,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e691f5-8e32-4b1d-acff-02a111a625ff/bin/ugemcutter-verify-SyDpkB78L0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-02 14:19:55,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e691f5-8e32-4b1d-acff-02a111a625ff/bin/ugemcutter-verify-SyDpkB78L0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-02 14:19:55,493 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-02 14:19:55,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 14:19:55,494 INFO L85 PathProgramCache]: Analyzing trace with hash 571738369, now seen corresponding path program 1 times [2024-11-02 14:19:55,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-02 14:19:55,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141354742] [2024-11-02 14:19:55,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 14:19:55,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 14:19:55,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 14:19:57,110 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 14:19:57,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-02 14:19:57,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141354742] [2024-11-02 14:19:57,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141354742] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 14:19:57,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94043876] [2024-11-02 14:19:57,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 14:19:57,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 14:19:57,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e691f5-8e32-4b1d-acff-02a111a625ff/bin/ugemcutter-verify-SyDpkB78L0/z3 [2024-11-02 14:19:57,116 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e691f5-8e32-4b1d-acff-02a111a625ff/bin/ugemcutter-verify-SyDpkB78L0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 14:19:57,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e691f5-8e32-4b1d-acff-02a111a625ff/bin/ugemcutter-verify-SyDpkB78L0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-02 14:19:57,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 14:19:57,295 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-02 14:19:57,298 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 14:20:01,883 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 14:20:01,884 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 14:20:11,152 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 14:20:11,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94043876] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 14:20:11,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 14:20:11,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2024-11-02 14:20:11,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238817582] [2024-11-02 14:20:11,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 14:20:11,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-02 14:20:11,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-02 14:20:11,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-02 14:20:11,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1098, Unknown=2, NotChecked=0, Total=1332 [2024-11-02 14:20:11,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 14:20:11,158 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-02 14:20:11,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.4864864864864864) internal successors, (55), 37 states have internal predecessors, (55), 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) [2024-11-02 14:20:11,159 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2024-11-02 14:20:11,159 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.