./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-min-max-1.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_985b52ae-b488-470a-8058-43652c39b315/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985b52ae-b488-470a-8058-43652c39b315/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985b52ae-b488-470a-8058-43652c39b315/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985b52ae-b488-470a-8058-43652c39b315/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985b52ae-b488-470a-8058-43652c39b315/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985b52ae-b488-470a-8058-43652c39b315/bin/utaipan-I9t0OCRTmS --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0e7e1d85f63f5db62c0766d87dec12398108cf8053838b2df867ce8148d55e54 --- 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 [2022-11-19 07:21:08,695 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:21:08,697 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:21:08,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:21:08,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:21:08,741 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:21:08,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:21:08,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:21:08,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:21:08,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:21:08,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:21:08,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:21:08,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:21:08,764 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:21:08,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:21:08,766 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:21:08,769 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:21:08,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:21:08,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:21:08,776 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:21:08,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:21:08,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:21:08,785 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:21:08,786 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:21:08,790 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:21:08,797 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:21:08,798 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:21:08,799 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:21:08,800 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:21:08,801 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:21:08,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:21:08,802 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:21:08,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:21:08,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:21:08,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:21:08,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:21:08,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:21:08,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:21:08,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:21:08,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:21:08,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:21:08,812 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985b52ae-b488-470a-8058-43652c39b315/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:21:08,854 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:21:08,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:21:08,855 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:21:08,855 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:21:08,856 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:21:08,856 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:21:08,856 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:21:08,857 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:21:08,857 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:21:08,857 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:21:08,858 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:21:08,858 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:21:08,859 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:21:08,859 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:21:08,859 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:21:08,859 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:21:08,860 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:21:08,860 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:21:08,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:21:08,861 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:21:08,861 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:21:08,861 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:21:08,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:21:08,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:21:08,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:21:08,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:21:08,862 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:21:08,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:21:08,863 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:21:08,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:21:08,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:21:08,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:21:08,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:21:08,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:21:08,864 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:21:08,865 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:21:08,865 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:21:08,865 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:21:08,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:21:08,867 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:21:08,867 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:21:08,867 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_985b52ae-b488-470a-8058-43652c39b315/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985b52ae-b488-470a-8058-43652c39b315/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e7e1d85f63f5db62c0766d87dec12398108cf8053838b2df867ce8148d55e54 [2022-11-19 07:21:09,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:21:09,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:21:09,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:21:09,166 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:21:09,168 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:21:09,170 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985b52ae-b488-470a-8058-43652c39b315/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2022-11-19 07:21:09,250 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985b52ae-b488-470a-8058-43652c39b315/bin/utaipan-I9t0OCRTmS/data/ce9fb406e/9e04a249df084c08915ba4f2f54da4b9/FLAGc52c3b1dd [2022-11-19 07:21:09,824 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:21:09,824 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985b52ae-b488-470a-8058-43652c39b315/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2022-11-19 07:21:09,832 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985b52ae-b488-470a-8058-43652c39b315/bin/utaipan-I9t0OCRTmS/data/ce9fb406e/9e04a249df084c08915ba4f2f54da4b9/FLAGc52c3b1dd [2022-11-19 07:21:10,158 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985b52ae-b488-470a-8058-43652c39b315/bin/utaipan-I9t0OCRTmS/data/ce9fb406e/9e04a249df084c08915ba4f2f54da4b9 [2022-11-19 07:21:10,161 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:21:10,162 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:21:10,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:21:10,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:21:10,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:21:10,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:21:10" (1/1) ... [2022-11-19 07:21:10,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2181759b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:21:10, skipping insertion in model container [2022-11-19 07:21:10,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:21:10" (1/1) ... [2022-11-19 07:21:10,183 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:21:10,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:21:10,464 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_985b52ae-b488-470a-8058-43652c39b315/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c[3057,3070] [2022-11-19 07:21:10,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:21:10,503 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:21:10,548 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_985b52ae-b488-470a-8058-43652c39b315/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c[3057,3070] [2022-11-19 07:21:10,555 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:21:10,577 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:21:10,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:21:10 WrapperNode [2022-11-19 07:21:10,578 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:21:10,579 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:21:10,579 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:21:10,580 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:21:10,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:21:10" (1/1) ... [2022-11-19 07:21:10,609 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:21:10" (1/1) ... [2022-11-19 07:21:10,645 INFO L138 Inliner]: procedures = 25, calls = 53, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 122 [2022-11-19 07:21:10,646 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:21:10,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:21:10,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:21:10,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:21:10,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:21:10" (1/1) ... [2022-11-19 07:21:10,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:21:10" (1/1) ... [2022-11-19 07:21:10,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:21:10" (1/1) ... [2022-11-19 07:21:10,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:21:10" (1/1) ... [2022-11-19 07:21:10,689 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:21:10" (1/1) ... [2022-11-19 07:21:10,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:21:10" (1/1) ... [2022-11-19 07:21:10,708 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:21:10" (1/1) ... [2022-11-19 07:21:10,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:21:10" (1/1) ... [2022-11-19 07:21:10,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:21:10,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:21:10,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:21:10,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:21:10,713 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:21:10" (1/1) ... [2022-11-19 07:21:10,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:21:10,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985b52ae-b488-470a-8058-43652c39b315/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:21:10,750 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985b52ae-b488-470a-8058-43652c39b315/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:21:10,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985b52ae-b488-470a-8058-43652c39b315/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:21:10,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:21:10,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:21:10,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:21:10,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:21:10,810 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-19 07:21:10,810 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-19 07:21:10,810 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-19 07:21:10,811 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-19 07:21:10,811 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-19 07:21:10,811 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-19 07:21:10,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:21:10,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-19 07:21:10,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-19 07:21:10,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:21:10,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:21:10,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:21:10,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:21:10,814 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-19 07:21:10,991 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:21:10,993 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:21:11,300 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:21:11,360 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:21:11,360 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-19 07:21:11,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:21:11 BoogieIcfgContainer [2022-11-19 07:21:11,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:21:11,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:21:11,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:21:11,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:21:11,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:21:10" (1/3) ... [2022-11-19 07:21:11,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40a71245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:21:11, skipping insertion in model container [2022-11-19 07:21:11,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:21:10" (2/3) ... [2022-11-19 07:21:11,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40a71245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:21:11, skipping insertion in model container [2022-11-19 07:21:11,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:21:11" (3/3) ... [2022-11-19 07:21:11,372 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2022-11-19 07:21:11,380 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-19 07:21:11,390 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:21:11,391 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:21:11,391 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-19 07:21:11,473 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-19 07:21:11,530 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 07:21:11,543 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 174 places, 176 transitions, 376 flow [2022-11-19 07:21:11,546 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 174 places, 176 transitions, 376 flow [2022-11-19 07:21:11,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 176 transitions, 376 flow [2022-11-19 07:21:11,629 INFO L130 PetriNetUnfolder]: 12/173 cut-off events. [2022-11-19 07:21:11,630 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-19 07:21:11,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 173 events. 12/173 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 99 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 142. Up to 2 conditions per place. [2022-11-19 07:21:11,637 INFO L119 LiptonReduction]: Number of co-enabled transitions 1134 [2022-11-19 07:21:20,096 INFO L134 LiptonReduction]: Checked pairs total: 1989 [2022-11-19 07:21:20,096 INFO L136 LiptonReduction]: Total number of compositions: 174 [2022-11-19 07:21:20,104 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 28 transitions, 80 flow [2022-11-19 07:21:20,130 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 129 states, 128 states have (on average 2.78125) internal successors, (356), 128 states have internal predecessors, (356), 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) [2022-11-19 07:21:20,147 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:21:20,153 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=FINITE_AUTOMATA, 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;@1eae4153, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:21:20,154 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-19 07:21:20,156 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 128 states have (on average 2.78125) internal successors, (356), 128 states have internal predecessors, (356), 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) [2022-11-19 07:21:20,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-19 07:21:20,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:21:20,165 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:21:20,166 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-19 07:21:20,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:21:20,171 INFO L85 PathProgramCache]: Analyzing trace with hash 191910469, now seen corresponding path program 1 times [2022-11-19 07:21:20,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:21:20,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049299590] [2022-11-19 07:21:20,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:21:20,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:21:20,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:21:20,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:21:20,650 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:21:20,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049299590] [2022-11-19 07:21:20,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049299590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:21:20,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:21:20,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:21:20,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834874914] [2022-11-19 07:21:20,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:21:20,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:21:20,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:21:20,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:21:20,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:21:20,687 INFO L87 Difference]: Start difference. First operand has 129 states, 128 states have (on average 2.78125) internal successors, (356), 128 states have internal predecessors, (356), 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) Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 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) [2022-11-19 07:21:20,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:21:20,807 INFO L93 Difference]: Finished difference Result 157 states and 438 transitions. [2022-11-19 07:21:20,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:21:20,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 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) Word has length 21 [2022-11-19 07:21:20,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:21:20,829 INFO L225 Difference]: With dead ends: 157 [2022-11-19 07:21:20,830 INFO L226 Difference]: Without dead ends: 157 [2022-11-19 07:21:20,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:21:20,835 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:21:20,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:21:20,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-11-19 07:21:20,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2022-11-19 07:21:20,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 2.8076923076923075) internal successors, (438), 156 states have internal predecessors, (438), 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) [2022-11-19 07:21:20,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 438 transitions. [2022-11-19 07:21:20,912 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 438 transitions. Word has length 21 [2022-11-19 07:21:20,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:21:20,913 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 438 transitions. [2022-11-19 07:21:20,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 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) [2022-11-19 07:21:20,915 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 438 transitions. [2022-11-19 07:21:20,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-19 07:21:20,917 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:21:20,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:21:20,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:21:20,918 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-19 07:21:20,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:21:20,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1669810544, now seen corresponding path program 1 times [2022-11-19 07:21:20,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:21:20,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539123372] [2022-11-19 07:21:20,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:21:20,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:21:20,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:21:21,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:21:21,132 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:21:21,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539123372] [2022-11-19 07:21:21,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539123372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:21:21,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:21:21,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:21:21,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639450128] [2022-11-19 07:21:21,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:21:21,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:21:21,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:21:21,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:21:21,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:21:21,135 INFO L87 Difference]: Start difference. First operand 157 states and 438 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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) [2022-11-19 07:21:21,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:21:21,211 INFO L93 Difference]: Finished difference Result 189 states and 532 transitions. [2022-11-19 07:21:21,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:21:21,212 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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) Word has length 22 [2022-11-19 07:21:21,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:21:21,215 INFO L225 Difference]: With dead ends: 189 [2022-11-19 07:21:21,215 INFO L226 Difference]: Without dead ends: 189 [2022-11-19 07:21:21,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:21:21,218 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:21:21,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 0 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:21:21,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-11-19 07:21:21,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2022-11-19 07:21:21,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.8297872340425534) internal successors, (532), 188 states have internal predecessors, (532), 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) [2022-11-19 07:21:21,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 532 transitions. [2022-11-19 07:21:21,235 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 532 transitions. Word has length 22 [2022-11-19 07:21:21,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:21:21,235 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 532 transitions. [2022-11-19 07:21:21,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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) [2022-11-19 07:21:21,236 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 532 transitions. [2022-11-19 07:21:21,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-19 07:21:21,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:21:21,243 INFO L195 NwaCegarLoop]: 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] [2022-11-19 07:21:21,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:21:21,243 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-19 07:21:21,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:21:21,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1734773454, now seen corresponding path program 1 times [2022-11-19 07:21:21,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:21:21,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084670625] [2022-11-19 07:21:21,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:21:21,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:21:21,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:21:21,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:21:21,483 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:21:21,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084670625] [2022-11-19 07:21:21,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084670625] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:21:21,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:21:21,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:21:21,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413612236] [2022-11-19 07:21:21,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:21:21,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:21:21,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:21:21,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:21:21,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:21:21,488 INFO L87 Difference]: Start difference. First operand 189 states and 532 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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) [2022-11-19 07:21:21,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:21:21,545 INFO L93 Difference]: Finished difference Result 190 states and 533 transitions. [2022-11-19 07:21:21,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:21:21,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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) Word has length 23 [2022-11-19 07:21:21,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:21:21,549 INFO L225 Difference]: With dead ends: 190 [2022-11-19 07:21:21,549 INFO L226 Difference]: Without dead ends: 190 [2022-11-19 07:21:21,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:21:21,553 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:21:21,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:21:21,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-11-19 07:21:21,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2022-11-19 07:21:21,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 2.82010582010582) internal successors, (533), 189 states have internal predecessors, (533), 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) [2022-11-19 07:21:21,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 533 transitions. [2022-11-19 07:21:21,576 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 533 transitions. Word has length 23 [2022-11-19 07:21:21,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:21:21,576 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 533 transitions. [2022-11-19 07:21:21,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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) [2022-11-19 07:21:21,577 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 533 transitions. [2022-11-19 07:21:21,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-19 07:21:21,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:21:21,578 INFO L195 NwaCegarLoop]: 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] [2022-11-19 07:21:21,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:21:21,579 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-19 07:21:21,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:21:21,579 INFO L85 PathProgramCache]: Analyzing trace with hash -848209543, now seen corresponding path program 1 times [2022-11-19 07:21:21,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:21:21,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196556344] [2022-11-19 07:21:21,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:21:21,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:21:21,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:21:22,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:21:22,116 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:21:22,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196556344] [2022-11-19 07:21:22,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196556344] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:21:22,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387552321] [2022-11-19 07:21:22,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:21:22,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:21:22,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985b52ae-b488-470a-8058-43652c39b315/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:21:22,122 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985b52ae-b488-470a-8058-43652c39b315/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:21:22,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985b52ae-b488-470a-8058-43652c39b315/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:21:22,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:21:22,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 07:21:22,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:21:22,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:21:22,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:21:22,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:21:22,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387552321] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:21:22,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1893274804] [2022-11-19 07:21:22,502 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 07:21:22,503 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:21:22,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 3, 3] total 11 [2022-11-19 07:21:22,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324379481] [2022-11-19 07:21:22,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:21:22,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 07:21:22,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:21:22,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 07:21:22,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:21:22,505 INFO L87 Difference]: Start difference. First operand 190 states and 533 transitions. Second operand has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 12 states have internal predecessors, (59), 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) [2022-11-19 07:21:23,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:21:23,255 INFO L93 Difference]: Finished difference Result 464 states and 1275 transitions. [2022-11-19 07:21:23,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-19 07:21:23,256 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 12 states have internal predecessors, (59), 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) Word has length 24 [2022-11-19 07:21:23,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:21:23,258 INFO L225 Difference]: With dead ends: 464 [2022-11-19 07:21:23,258 INFO L226 Difference]: Without dead ends: 277 [2022-11-19 07:21:23,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=296, Invalid=696, Unknown=0, NotChecked=0, Total=992 [2022-11-19 07:21:23,259 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 216 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:21:23,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 0 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:21:23,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-11-19 07:21:23,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 198. [2022-11-19 07:21:23,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 2.700507614213198) internal successors, (532), 197 states have internal predecessors, (532), 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) [2022-11-19 07:21:23,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 532 transitions. [2022-11-19 07:21:23,278 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 532 transitions. Word has length 24 [2022-11-19 07:21:23,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:21:23,279 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 532 transitions. [2022-11-19 07:21:23,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 12 states have internal predecessors, (59), 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) [2022-11-19 07:21:23,280 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 532 transitions. [2022-11-19 07:21:23,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-19 07:21:23,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:21:23,300 INFO L195 NwaCegarLoop]: 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] [2022-11-19 07:21:23,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985b52ae-b488-470a-8058-43652c39b315/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:21:23,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985b52ae-b488-470a-8058-43652c39b315/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:21:23,506 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-19 07:21:23,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:21:23,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1254454867, now seen corresponding path program 2 times [2022-11-19 07:21:23,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:21:23,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527331869] [2022-11-19 07:21:23,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:21:23,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:21:23,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:21:24,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:21:24,175 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:21:24,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527331869] [2022-11-19 07:21:24,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527331869] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:21:24,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938595379] [2022-11-19 07:21:24,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:21:24,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:21:24,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985b52ae-b488-470a-8058-43652c39b315/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:21:24,177 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985b52ae-b488-470a-8058-43652c39b315/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:21:24,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985b52ae-b488-470a-8058-43652c39b315/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:21:24,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 07:21:24,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:21:24,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-19 07:21:24,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:21:24,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:24,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 07:21:24,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:24,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-11-19 07:21:24,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-19 07:21:24,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:21:24,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:21:25,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:21:25,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938595379] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:21:25,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1545239800] [2022-11-19 07:21:25,073 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 07:21:25,074 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:21:25,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 6] total 24 [2022-11-19 07:21:25,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294782739] [2022-11-19 07:21:25,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:21:25,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-19 07:21:25,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:21:25,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-19 07:21:25,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2022-11-19 07:21:25,076 INFO L87 Difference]: Start difference. First operand 198 states and 532 transitions. Second operand has 25 states, 24 states have (on average 3.0) internal successors, (72), 25 states have internal predecessors, (72), 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) [2022-11-19 07:21:26,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:21:26,992 INFO L93 Difference]: Finished difference Result 621 states and 1672 transitions. [2022-11-19 07:21:26,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-19 07:21:26,993 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.0) internal successors, (72), 25 states have internal predecessors, (72), 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) Word has length 24 [2022-11-19 07:21:26,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:21:26,995 INFO L225 Difference]: With dead ends: 621 [2022-11-19 07:21:26,995 INFO L226 Difference]: Without dead ends: 316 [2022-11-19 07:21:26,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=881, Invalid=1875, Unknown=0, NotChecked=0, Total=2756 [2022-11-19 07:21:26,997 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 323 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:21:26,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 0 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-19 07:21:26,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-11-19 07:21:27,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 178. [2022-11-19 07:21:27,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 2.6610169491525424) internal successors, (471), 177 states have internal predecessors, (471), 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) [2022-11-19 07:21:27,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 471 transitions. [2022-11-19 07:21:27,012 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 471 transitions. Word has length 24 [2022-11-19 07:21:27,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:21:27,012 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 471 transitions. [2022-11-19 07:21:27,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.0) internal successors, (72), 25 states have internal predecessors, (72), 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) [2022-11-19 07:21:27,014 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 471 transitions. [2022-11-19 07:21:27,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-19 07:21:27,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:21:27,015 INFO L195 NwaCegarLoop]: 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] [2022-11-19 07:21:27,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985b52ae-b488-470a-8058-43652c39b315/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:21:27,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985b52ae-b488-470a-8058-43652c39b315/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:21:27,222 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-19 07:21:27,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:21:27,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1447593933, now seen corresponding path program 3 times [2022-11-19 07:21:27,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:21:27,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648504523] [2022-11-19 07:21:27,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:21:27,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:21:27,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:21:27,849 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:21:27,849 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:21:27,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648504523] [2022-11-19 07:21:27,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648504523] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:21:27,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193529287] [2022-11-19 07:21:27,850 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 07:21:27,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:21:27,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985b52ae-b488-470a-8058-43652c39b315/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:21:27,851 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985b52ae-b488-470a-8058-43652c39b315/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:21:27,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985b52ae-b488-470a-8058-43652c39b315/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:21:27,970 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 07:21:27,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:21:27,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-19 07:21:27,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:21:28,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:21:28,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 07:21:28,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:28,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 07:21:28,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:28,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-19 07:21:28,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-19 07:21:28,307 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:21:28,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:21:28,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:21:28,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193529287] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:21:28,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2008149687] [2022-11-19 07:21:28,559 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 07:21:28,561 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:21:28,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 7] total 23 [2022-11-19 07:21:28,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914713338] [2022-11-19 07:21:28,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:21:28,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-19 07:21:28,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:21:28,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-19 07:21:28,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2022-11-19 07:21:28,563 INFO L87 Difference]: Start difference. First operand 178 states and 471 transitions. Second operand has 24 states, 23 states have (on average 3.130434782608696) internal successors, (72), 24 states have internal predecessors, (72), 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) [2022-11-19 07:21:29,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:21:29,449 INFO L93 Difference]: Finished difference Result 331 states and 894 transitions. [2022-11-19 07:21:29,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-19 07:21:29,450 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.130434782608696) internal successors, (72), 24 states have internal predecessors, (72), 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) Word has length 24 [2022-11-19 07:21:29,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:21:29,451 INFO L225 Difference]: With dead ends: 331 [2022-11-19 07:21:29,451 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 07:21:29,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=457, Invalid=1103, Unknown=0, NotChecked=0, Total=1560 [2022-11-19 07:21:29,452 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 378 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:21:29,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 0 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:21:29,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 07:21:29,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 07:21:29,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-11-19 07:21:29,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 07:21:29,453 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2022-11-19 07:21:29,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:21:29,454 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 07:21:29,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.130434782608696) internal successors, (72), 24 states have internal predecessors, (72), 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) [2022-11-19 07:21:29,454 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 07:21:29,454 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 07:21:29,456 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-11-19 07:21:29,457 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-11-19 07:21:29,457 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-19 07:21:29,457 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-11-19 07:21:29,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985b52ae-b488-470a-8058-43652c39b315/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:21:29,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985b52ae-b488-470a-8058-43652c39b315/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:21:29,671 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2022-11-19 07:21:29,674 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-19 07:21:29,674 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:21:29,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:21:29 BasicIcfg [2022-11-19 07:21:29,679 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:21:29,679 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:21:29,680 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:21:29,680 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:21:29,680 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:21:11" (3/4) ... [2022-11-19 07:21:29,683 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 07:21:29,689 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-19 07:21:29,689 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-19 07:21:29,689 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-19 07:21:29,697 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2022-11-19 07:21:29,698 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-19 07:21:29,698 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-19 07:21:29,698 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 07:21:29,756 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985b52ae-b488-470a-8058-43652c39b315/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 07:21:29,756 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:21:29,757 INFO L158 Benchmark]: Toolchain (without parser) took 19594.76ms. Allocated memory was 119.5MB in the beginning and 188.7MB in the end (delta: 69.2MB). Free memory was 93.7MB in the beginning and 71.0MB in the end (delta: 22.7MB). Peak memory consumption was 92.9MB. Max. memory is 16.1GB. [2022-11-19 07:21:29,757 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 119.5MB. Free memory was 74.2MB in the beginning and 74.1MB in the end (delta: 83.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:21:29,758 INFO L158 Benchmark]: CACSL2BoogieTranslator took 414.44ms. Allocated memory is still 119.5MB. Free memory was 93.4MB in the beginning and 91.5MB in the end (delta: 1.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-19 07:21:29,758 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.57ms. Allocated memory is still 119.5MB. Free memory was 91.5MB in the beginning and 89.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:21:29,759 INFO L158 Benchmark]: Boogie Preprocessor took 63.57ms. Allocated memory is still 119.5MB. Free memory was 89.8MB in the beginning and 88.0MB in the end (delta: 1.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-19 07:21:29,759 INFO L158 Benchmark]: RCFGBuilder took 651.15ms. Allocated memory is still 119.5MB. Free memory was 88.0MB in the beginning and 66.4MB in the end (delta: 21.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-19 07:21:29,760 INFO L158 Benchmark]: TraceAbstraction took 18313.67ms. Allocated memory was 119.5MB in the beginning and 188.7MB in the end (delta: 69.2MB). Free memory was 65.6MB in the beginning and 74.7MB in the end (delta: -9.1MB). Peak memory consumption was 61.3MB. Max. memory is 16.1GB. [2022-11-19 07:21:29,760 INFO L158 Benchmark]: Witness Printer took 77.00ms. Allocated memory is still 188.7MB. Free memory was 74.7MB in the beginning and 71.0MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-19 07:21:29,765 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 119.5MB. Free memory was 74.2MB in the beginning and 74.1MB in the end (delta: 83.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 414.44ms. Allocated memory is still 119.5MB. Free memory was 93.4MB in the beginning and 91.5MB in the end (delta: 1.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.57ms. Allocated memory is still 119.5MB. Free memory was 91.5MB in the beginning and 89.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 63.57ms. Allocated memory is still 119.5MB. Free memory was 89.8MB in the beginning and 88.0MB in the end (delta: 1.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 651.15ms. Allocated memory is still 119.5MB. Free memory was 88.0MB in the beginning and 66.4MB in the end (delta: 21.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 18313.67ms. Allocated memory was 119.5MB in the beginning and 188.7MB in the end (delta: 69.2MB). Free memory was 65.6MB in the beginning and 74.7MB in the end (delta: -9.1MB). Peak memory consumption was 61.3MB. Max. memory is 16.1GB. * Witness Printer took 77.00ms. Allocated memory is still 188.7MB. Free memory was 74.7MB in the beginning and 71.0MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.6s, 174 PlacesBefore, 35 PlacesAfterwards, 176 TransitionsBefore, 28 TransitionsAfterwards, 1134 CoEnabledTransitionPairs, 8 FixpointIterations, 115 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 20 TrivialYvCompositions, 4 ConcurrentYvCompositions, 9 ChoiceCompositions, 174 TotalNumberOfCompositions, 1989 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1518, independent: 1438, independent conditional: 0, independent unconditional: 1438, dependent: 80, dependent conditional: 0, dependent unconditional: 80, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 777, independent: 757, independent conditional: 0, independent unconditional: 757, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 777, independent: 757, independent conditional: 0, independent unconditional: 757, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 20, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 103, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 103, dependent conditional: 0, dependent unconditional: 103, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1518, independent: 681, independent conditional: 0, independent unconditional: 681, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 777, unknown conditional: 0, unknown unconditional: 777] , Statistics on independence cache: Total cache size (in pairs): 74, Positive cache size: 67, Positive conditional cache size: 0, Positive unconditional cache size: 67, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 115]: 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 7 procedures, 194 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 18.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 962 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 962 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 133 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1747 IncrementalHoareTripleChecker+Invalid, 1880 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 133 mSolverCounterUnsat, 0 mSDtfsCounter, 1747 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 276 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1130 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred in iteration=4, InterpolantAutomatonStates: 81, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 217 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 210 NumberOfCodeBlocks, 210 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 270 ConstructedInterpolants, 0 QuantifiedInterpolants, 1869 SizeOfPredicates, 44 NumberOfNonLiveVariables, 684 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 15/30 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! [2022-11-19 07:21:29,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985b52ae-b488-470a-8058-43652c39b315/bin/utaipan-I9t0OCRTmS/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