./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-collitem-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_37f803e6-acb3-4833-aab8-a399f7118b5a/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37f803e6-acb3-4833-aab8-a399f7118b5a/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37f803e6-acb3-4833-aab8-a399f7118b5a/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37f803e6-acb3-4833-aab8-a399f7118b5a/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-collitem-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37f803e6-acb3-4833-aab8-a399f7118b5a/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37f803e6-acb3-4833-aab8-a399f7118b5a/bin/uautomizer-TMbwUNV5ro --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 64fd5c9a7c03c96af66cf5f857887398d304caaa83220f1caa01f4ec8c71700a --- 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-8393723 [2022-11-18 20:26:27,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:26:27,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:26:27,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:26:27,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:26:27,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:26:27,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:26:27,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:26:27,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:26:27,686 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:26:27,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:26:27,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:26:27,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:26:27,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:26:27,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:26:27,693 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:26:27,698 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:26:27,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:26:27,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:26:27,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:26:27,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:26:27,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:26:27,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:26:27,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:26:27,733 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:26:27,734 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:26:27,734 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:26:27,735 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:26:27,736 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:26:27,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:26:27,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:26:27,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:26:27,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:26:27,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:26:27,749 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:26:27,749 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:26:27,750 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:26:27,750 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:26:27,751 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:26:27,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:26:27,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:26:27,754 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37f803e6-acb3-4833-aab8-a399f7118b5a/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:26:27,800 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:26:27,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:26:27,807 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:26:27,807 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:26:27,808 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:26:27,808 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:26:27,809 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:26:27,809 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:26:27,810 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:26:27,810 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:26:27,811 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:26:27,812 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:26:27,812 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:26:27,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:26:27,813 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:26:27,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:26:27,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:26:27,813 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:26:27,814 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:26:27,814 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:26:27,814 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:26:27,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:26:27,815 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:26:27,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:26:27,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:26:27,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:26:27,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:26:27,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:26:27,816 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:26:27,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:26:27,817 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:26:27,817 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:26:27,818 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:26:27,818 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_37f803e6-acb3-4833-aab8-a399f7118b5a/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37f803e6-acb3-4833-aab8-a399f7118b5a/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64fd5c9a7c03c96af66cf5f857887398d304caaa83220f1caa01f4ec8c71700a [2022-11-18 20:26:28,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:26:28,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:26:28,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:26:28,236 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:26:28,238 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:26:28,240 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37f803e6-acb3-4833-aab8-a399f7118b5a/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/chl-collitem-symm.wvr.c [2022-11-18 20:26:28,321 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37f803e6-acb3-4833-aab8-a399f7118b5a/bin/uautomizer-TMbwUNV5ro/data/a031defdc/9d08209b3d92412c95ce7c66001efe55/FLAG17aa4b1bc [2022-11-18 20:26:28,859 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:26:28,859 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37f803e6-acb3-4833-aab8-a399f7118b5a/sv-benchmarks/c/weaver/chl-collitem-symm.wvr.c [2022-11-18 20:26:28,869 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37f803e6-acb3-4833-aab8-a399f7118b5a/bin/uautomizer-TMbwUNV5ro/data/a031defdc/9d08209b3d92412c95ce7c66001efe55/FLAG17aa4b1bc [2022-11-18 20:26:29,191 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37f803e6-acb3-4833-aab8-a399f7118b5a/bin/uautomizer-TMbwUNV5ro/data/a031defdc/9d08209b3d92412c95ce7c66001efe55 [2022-11-18 20:26:29,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:26:29,196 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:26:29,198 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:26:29,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:26:29,203 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:26:29,204 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:26:29" (1/1) ... [2022-11-18 20:26:29,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15b3e5af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:26:29, skipping insertion in model container [2022-11-18 20:26:29,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:26:29" (1/1) ... [2022-11-18 20:26:29,215 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:26:29,248 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:26:29,527 WARN L234 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_37f803e6-acb3-4833-aab8-a399f7118b5a/sv-benchmarks/c/weaver/chl-collitem-symm.wvr.c[2986,2999] [2022-11-18 20:26:29,537 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:26:29,549 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:26:29,576 WARN L234 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_37f803e6-acb3-4833-aab8-a399f7118b5a/sv-benchmarks/c/weaver/chl-collitem-symm.wvr.c[2986,2999] [2022-11-18 20:26:29,584 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:26:29,601 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:26:29,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:26:29 WrapperNode [2022-11-18 20:26:29,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:26:29,604 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:26:29,604 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:26:29,605 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:26:29,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:26:29" (1/1) ... [2022-11-18 20:26:29,624 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:26:29" (1/1) ... [2022-11-18 20:26:29,664 INFO L138 Inliner]: procedures = 22, calls = 35, calls flagged for inlining = 15, calls inlined = 29, statements flattened = 252 [2022-11-18 20:26:29,664 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:26:29,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:26:29,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:26:29,666 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:26:29,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:26:29" (1/1) ... [2022-11-18 20:26:29,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:26:29" (1/1) ... [2022-11-18 20:26:29,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:26:29" (1/1) ... [2022-11-18 20:26:29,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:26:29" (1/1) ... [2022-11-18 20:26:29,693 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:26:29" (1/1) ... [2022-11-18 20:26:29,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:26:29" (1/1) ... [2022-11-18 20:26:29,700 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:26:29" (1/1) ... [2022-11-18 20:26:29,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:26:29" (1/1) ... [2022-11-18 20:26:29,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:26:29,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:26:29,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:26:29,708 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:26:29,709 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:26:29" (1/1) ... [2022-11-18 20:26:29,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:26:29,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37f803e6-acb3-4833-aab8-a399f7118b5a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:26:29,747 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37f803e6-acb3-4833-aab8-a399f7118b5a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:26:29,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37f803e6-acb3-4833-aab8-a399f7118b5a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:26:29,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:26:29,795 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:26:29,795 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:26:29,795 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:26:29,795 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:26:29,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:26:29,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:26:29,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:26:29,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 20:26:29,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 20:26:29,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:26:29,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:26:29,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:26:29,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:26:29,799 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:26:29,924 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:26:29,940 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:26:30,805 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:26:31,475 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:26:31,476 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 20:26:31,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:26:31 BoogieIcfgContainer [2022-11-18 20:26:31,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:26:31,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:26:31,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:26:31,488 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:26:31,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:26:29" (1/3) ... [2022-11-18 20:26:31,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@337f66f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:26:31, skipping insertion in model container [2022-11-18 20:26:31,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:26:29" (2/3) ... [2022-11-18 20:26:31,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@337f66f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:26:31, skipping insertion in model container [2022-11-18 20:26:31,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:26:31" (3/3) ... [2022-11-18 20:26:31,495 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-collitem-symm.wvr.c [2022-11-18 20:26:31,510 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:26:31,524 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:26:31,524 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:26:31,525 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:26:31,660 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 20:26:31,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 114 transitions, 244 flow [2022-11-18 20:26:31,820 INFO L130 PetriNetUnfolder]: 3/112 cut-off events. [2022-11-18 20:26:31,820 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 20:26:31,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 112 events. 3/112 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 19 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2022-11-18 20:26:31,826 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 114 transitions, 244 flow [2022-11-18 20:26:31,832 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 103 transitions, 218 flow [2022-11-18 20:26:31,844 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:26:31,853 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=PETRI_NET, 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;@5e710f97, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:26:31,853 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-18 20:26:31,889 INFO L130 PetriNetUnfolder]: 3/102 cut-off events. [2022-11-18 20:26:31,890 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 20:26:31,890 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:26:31,891 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:26:31,892 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:26:31,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:26:31,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1512699852, now seen corresponding path program 1 times [2022-11-18 20:26:31,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:26:31,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457453546] [2022-11-18 20:26:31,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:26:31,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:26:32,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:41,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:26:41,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:26:41,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457453546] [2022-11-18 20:26:41,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457453546] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:26:41,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:26:41,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 20:26:41,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533619778] [2022-11-18 20:26:41,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:26:41,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:26:41,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:26:41,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:26:41,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:26:41,929 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 114 [2022-11-18 20:26:41,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 103 transitions, 218 flow. Second operand has 12 states, 12 states have (on average 72.16666666666667) internal successors, (866), 12 states have internal predecessors, (866), 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) [2022-11-18 20:26:41,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:26:41,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 114 [2022-11-18 20:26:41,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:26:44,987 INFO L130 PetriNetUnfolder]: 2/139 cut-off events. [2022-11-18 20:26:44,988 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-18 20:26:44,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 139 events. 2/139 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 130 event pairs, 0 based on Foata normal form. 6/140 useless extension candidates. Maximal degree in co-relation 37. Up to 24 conditions per place. [2022-11-18 20:26:44,990 INFO L137 encePairwiseOnDemand]: 97/114 looper letters, 37 selfloop transitions, 1 changer transitions 21/118 dead transitions. [2022-11-18 20:26:44,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 118 transitions, 375 flow [2022-11-18 20:26:44,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:26:45,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 20:26:45,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1101 transitions. [2022-11-18 20:26:45,020 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.643859649122807 [2022-11-18 20:26:45,021 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1101 transitions. [2022-11-18 20:26:45,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1101 transitions. [2022-11-18 20:26:45,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:26:45,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1101 transitions. [2022-11-18 20:26:45,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 73.4) internal successors, (1101), 15 states have internal predecessors, (1101), 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) [2022-11-18 20:26:45,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 114.0) internal successors, (1824), 16 states have internal predecessors, (1824), 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) [2022-11-18 20:26:45,056 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 114.0) internal successors, (1824), 16 states have internal predecessors, (1824), 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) [2022-11-18 20:26:45,058 INFO L175 Difference]: Start difference. First operand has 107 places, 103 transitions, 218 flow. Second operand 15 states and 1101 transitions. [2022-11-18 20:26:45,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 118 transitions, 375 flow [2022-11-18 20:26:45,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 118 transitions, 361 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:26:45,067 INFO L231 Difference]: Finished difference. Result has 127 places, 97 transitions, 221 flow [2022-11-18 20:26:45,070 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=221, PETRI_PLACES=127, PETRI_TRANSITIONS=97} [2022-11-18 20:26:45,074 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 20 predicate places. [2022-11-18 20:26:45,074 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 97 transitions, 221 flow [2022-11-18 20:26:45,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 72.16666666666667) internal successors, (866), 12 states have internal predecessors, (866), 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) [2022-11-18 20:26:45,075 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:26:45,076 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:26:45,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:26:45,076 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:26:45,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:26:45,077 INFO L85 PathProgramCache]: Analyzing trace with hash 327820372, now seen corresponding path program 2 times [2022-11-18 20:26:45,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:26:45,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536489049] [2022-11-18 20:26:45,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:26:45,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:26:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:49,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:26:49,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:26:49,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536489049] [2022-11-18 20:26:49,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536489049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:26:49,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:26:49,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 20:26:49,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585827297] [2022-11-18 20:26:49,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:26:49,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:26:49,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:26:49,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:26:49,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:26:49,292 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 114 [2022-11-18 20:26:49,294 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 97 transitions, 221 flow. Second operand has 12 states, 12 states have (on average 72.16666666666667) internal successors, (866), 12 states have internal predecessors, (866), 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) [2022-11-18 20:26:49,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:26:49,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 114 [2022-11-18 20:26:49,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:26:51,128 INFO L130 PetriNetUnfolder]: 1/104 cut-off events. [2022-11-18 20:26:51,128 INFO L131 PetriNetUnfolder]: For 11/14 co-relation queries the response was YES. [2022-11-18 20:26:51,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 104 events. 1/104 cut-off events. For 11/14 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 42 event pairs, 1 based on Foata normal form. 3/106 useless extension candidates. Maximal degree in co-relation 160. Up to 27 conditions per place. [2022-11-18 20:26:51,130 INFO L137 encePairwiseOnDemand]: 103/114 looper letters, 0 selfloop transitions, 0 changer transitions 96/96 dead transitions. [2022-11-18 20:26:51,131 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 96 transitions, 299 flow [2022-11-18 20:26:51,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:26:51,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 20:26:51,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 868 transitions. [2022-11-18 20:26:51,135 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6345029239766082 [2022-11-18 20:26:51,135 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 868 transitions. [2022-11-18 20:26:51,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 868 transitions. [2022-11-18 20:26:51,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:26:51,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 868 transitions. [2022-11-18 20:26:51,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 72.33333333333333) internal successors, (868), 12 states have internal predecessors, (868), 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) [2022-11-18 20:26:51,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 114.0) internal successors, (1482), 13 states have internal predecessors, (1482), 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) [2022-11-18 20:26:51,145 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 114.0) internal successors, (1482), 13 states have internal predecessors, (1482), 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) [2022-11-18 20:26:51,145 INFO L175 Difference]: Start difference. First operand has 127 places, 97 transitions, 221 flow. Second operand 12 states and 868 transitions. [2022-11-18 20:26:51,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 96 transitions, 299 flow [2022-11-18 20:26:51,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 96 transitions, 281 flow, removed 8 selfloop flow, removed 9 redundant places. [2022-11-18 20:26:51,149 INFO L231 Difference]: Finished difference. Result has 111 places, 0 transitions, 0 flow [2022-11-18 20:26:51,149 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=111, PETRI_TRANSITIONS=0} [2022-11-18 20:26:51,150 INFO L288 CegarLoopForPetriNet]: 107 programPoint places, 4 predicate places. [2022-11-18 20:26:51,150 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 0 transitions, 0 flow [2022-11-18 20:26:51,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 72.16666666666667) internal successors, (866), 12 states have internal predecessors, (866), 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) [2022-11-18 20:26:51,154 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-11-18 20:26:51,155 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-11-18 20:26:51,156 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-11-18 20:26:51,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:26:51,156 INFO L444 BasicCegarLoop]: Path program histogram: [2] [2022-11-18 20:26:51,161 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-18 20:26:51,161 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 20:26:51,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:26:51 BasicIcfg [2022-11-18 20:26:51,168 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 20:26:51,169 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 20:26:51,169 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 20:26:51,170 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 20:26:51,170 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:26:31" (3/4) ... [2022-11-18 20:26:51,174 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 20:26:51,181 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-18 20:26:51,181 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-18 20:26:51,187 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-11-18 20:26:51,188 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-18 20:26:51,188 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 20:26:51,188 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 20:26:51,243 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37f803e6-acb3-4833-aab8-a399f7118b5a/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 20:26:51,249 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 20:26:51,250 INFO L158 Benchmark]: Toolchain (without parser) took 22054.16ms. Allocated memory was 117.4MB in the beginning and 419.4MB in the end (delta: 302.0MB). Free memory was 78.6MB in the beginning and 304.8MB in the end (delta: -226.2MB). Peak memory consumption was 76.2MB. Max. memory is 16.1GB. [2022-11-18 20:26:51,251 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 117.4MB. Free memory is still 94.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:26:51,251 INFO L158 Benchmark]: CACSL2BoogieTranslator took 405.27ms. Allocated memory is still 117.4MB. Free memory was 78.4MB in the beginning and 91.6MB in the end (delta: -13.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 20:26:51,252 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.43ms. Allocated memory is still 117.4MB. Free memory was 91.6MB in the beginning and 89.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:26:51,252 INFO L158 Benchmark]: Boogie Preprocessor took 41.46ms. Allocated memory is still 117.4MB. Free memory was 89.2MB in the beginning and 87.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:26:51,253 INFO L158 Benchmark]: RCFGBuilder took 1772.25ms. Allocated memory was 117.4MB in the beginning and 146.8MB in the end (delta: 29.4MB). Free memory was 87.6MB in the beginning and 115.2MB in the end (delta: -27.7MB). Peak memory consumption was 52.0MB. Max. memory is 16.1GB. [2022-11-18 20:26:51,253 INFO L158 Benchmark]: TraceAbstraction took 19684.66ms. Allocated memory was 146.8MB in the beginning and 419.4MB in the end (delta: 272.6MB). Free memory was 115.2MB in the beginning and 307.9MB in the end (delta: -192.7MB). Peak memory consumption was 78.8MB. Max. memory is 16.1GB. [2022-11-18 20:26:51,254 INFO L158 Benchmark]: Witness Printer took 80.19ms. Allocated memory is still 419.4MB. Free memory was 307.9MB in the beginning and 304.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-18 20:26:51,259 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 117.4MB. Free memory is still 94.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 405.27ms. Allocated memory is still 117.4MB. Free memory was 78.4MB in the beginning and 91.6MB in the end (delta: -13.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.43ms. Allocated memory is still 117.4MB. Free memory was 91.6MB in the beginning and 89.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.46ms. Allocated memory is still 117.4MB. Free memory was 89.2MB in the beginning and 87.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1772.25ms. Allocated memory was 117.4MB in the beginning and 146.8MB in the end (delta: 29.4MB). Free memory was 87.6MB in the beginning and 115.2MB in the end (delta: -27.7MB). Peak memory consumption was 52.0MB. Max. memory is 16.1GB. * TraceAbstraction took 19684.66ms. Allocated memory was 146.8MB in the beginning and 419.4MB in the end (delta: 272.6MB). Free memory was 115.2MB in the beginning and 307.9MB in the end (delta: -192.7MB). Peak memory consumption was 78.8MB. Max. memory is 16.1GB. * Witness Printer took 80.19ms. Allocated memory is still 419.4MB. Free memory was 307.9MB in the beginning and 304.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 87]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 122 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 19.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 105 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 105 mSDsluCounter, 210 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 163 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 245 IncrementalHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 47 mSDtfsCounter, 245 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 5.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=221occurred in iteration=1, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 13.1s InterpolantComputationTime, 194 NumberOfCodeBlocks, 194 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 192 ConstructedInterpolants, 0 QuantifiedInterpolants, 4812 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-18 20:26:51,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37f803e6-acb3-4833-aab8-a399f7118b5a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE