./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/bigshot_s2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884d44c9-4350-44bc-ada6-21882d569513/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884d44c9-4350-44bc-ada6-21882d569513/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884d44c9-4350-44bc-ada6-21882d569513/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884d44c9-4350-44bc-ada6-21882d569513/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/bigshot_s2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884d44c9-4350-44bc-ada6-21882d569513/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884d44c9-4350-44bc-ada6-21882d569513/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fa644cc26c2bb4f900e6af52233648196eb4dff503d36a50559ddcf2a4270ffb --- 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-38b53e6 [2022-11-25 18:35:51,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:35:51,037 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:35:51,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:35:51,067 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:35:51,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:35:51,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:35:51,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:35:51,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:35:51,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:35:51,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:35:51,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:35:51,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:35:51,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:35:51,093 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:35:51,094 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:35:51,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:35:51,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:35:51,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:35:51,099 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:35:51,101 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:35:51,102 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:35:51,104 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:35:51,105 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:35:51,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:35:51,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:35:51,109 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:35:51,110 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:35:51,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:35:51,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:35:51,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:35:51,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:35:51,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:35:51,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:35:51,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:35:51,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:35:51,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:35:51,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:35:51,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:35:51,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:35:51,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:35:51,121 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884d44c9-4350-44bc-ada6-21882d569513/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 18:35:51,155 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:35:51,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:35:51,156 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:35:51,156 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:35:51,157 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:35:51,157 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:35:51,158 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:35:51,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:35:51,159 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:35:51,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:35:51,159 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:35:51,160 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:35:51,160 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:35:51,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:35:51,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:35:51,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:35:51,161 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:35:51,161 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:35:51,161 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:35:51,162 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:35:51,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:35:51,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:35:51,162 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:35:51,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:35:51,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:35:51,163 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:35:51,163 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:35:51,164 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:35:51,164 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:35:51,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:35:51,164 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:35:51,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:35:51,165 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:35:51,165 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:35:51,165 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_884d44c9-4350-44bc-ada6-21882d569513/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884d44c9-4350-44bc-ada6-21882d569513/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa644cc26c2bb4f900e6af52233648196eb4dff503d36a50559ddcf2a4270ffb [2022-11-25 18:35:51,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:35:51,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:35:51,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:35:51,445 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:35:51,446 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:35:51,447 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884d44c9-4350-44bc-ada6-21882d569513/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread/bigshot_s2.i [2022-11-25 18:35:54,754 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:35:55,040 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:35:55,041 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884d44c9-4350-44bc-ada6-21882d569513/sv-benchmarks/c/pthread/bigshot_s2.i [2022-11-25 18:35:55,065 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884d44c9-4350-44bc-ada6-21882d569513/bin/uautomizer-ZsLfNo2U6R/data/8bd89e960/63553b268354466887974ae2a540ad7f/FLAG1e1f8ad03 [2022-11-25 18:35:55,080 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884d44c9-4350-44bc-ada6-21882d569513/bin/uautomizer-ZsLfNo2U6R/data/8bd89e960/63553b268354466887974ae2a540ad7f [2022-11-25 18:35:55,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:35:55,085 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:35:55,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:35:55,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:35:55,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:35:55,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:35:55" (1/1) ... [2022-11-25 18:35:55,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@87dc713 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:55, skipping insertion in model container [2022-11-25 18:35:55,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:35:55" (1/1) ... [2022-11-25 18:35:55,102 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:35:55,173 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:35:55,680 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884d44c9-4350-44bc-ada6-21882d569513/sv-benchmarks/c/pthread/bigshot_s2.i[55203,55216] [2022-11-25 18:35:55,707 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:35:55,719 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:35:55,759 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884d44c9-4350-44bc-ada6-21882d569513/sv-benchmarks/c/pthread/bigshot_s2.i[55203,55216] [2022-11-25 18:35:55,765 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:35:55,834 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:35:55,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:55 WrapperNode [2022-11-25 18:35:55,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:35:55,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:35:55,836 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:35:55,836 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:35:55,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:55" (1/1) ... [2022-11-25 18:35:55,867 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:55" (1/1) ... [2022-11-25 18:35:55,904 INFO L138 Inliner]: procedures = 323, calls = 33, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-11-25 18:35:55,904 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:35:55,905 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:35:55,905 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:35:55,905 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:35:55,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:55" (1/1) ... [2022-11-25 18:35:55,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:55" (1/1) ... [2022-11-25 18:35:55,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:55" (1/1) ... [2022-11-25 18:35:55,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:55" (1/1) ... [2022-11-25 18:35:55,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:55" (1/1) ... [2022-11-25 18:35:55,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:55" (1/1) ... [2022-11-25 18:35:55,928 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:55" (1/1) ... [2022-11-25 18:35:55,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:55" (1/1) ... [2022-11-25 18:35:55,932 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:35:55,933 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:35:55,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:35:55,934 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:35:55,935 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:55" (1/1) ... [2022-11-25 18:35:55,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:35:55,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884d44c9-4350-44bc-ada6-21882d569513/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:35:55,975 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884d44c9-4350-44bc-ada6-21882d569513/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:35:55,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884d44c9-4350-44bc-ada6-21882d569513/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:35:56,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:35:56,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:35:56,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-25 18:35:56,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 18:35:56,026 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 18:35:56,026 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 18:35:56,027 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 18:35:56,027 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 18:35:56,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 18:35:56,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 18:35:56,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:35:56,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:35:56,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:35:56,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:35:56,029 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 18:35:56,223 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:35:56,226 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:35:56,523 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:35:56,531 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:35:56,531 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 18:35:56,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:35:56 BoogieIcfgContainer [2022-11-25 18:35:56,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:35:56,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:35:56,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:35:56,540 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:35:56,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:35:55" (1/3) ... [2022-11-25 18:35:56,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23f9bb5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:35:56, skipping insertion in model container [2022-11-25 18:35:56,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:35:55" (2/3) ... [2022-11-25 18:35:56,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23f9bb5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:35:56, skipping insertion in model container [2022-11-25 18:35:56,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:35:56" (3/3) ... [2022-11-25 18:35:56,544 INFO L112 eAbstractionObserver]: Analyzing ICFG bigshot_s2.i [2022-11-25 18:35:56,554 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 18:35:56,566 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:35:56,567 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 18:35:56,567 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 18:35:56,635 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 18:35:56,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 90 transitions, 196 flow [2022-11-25 18:35:56,726 INFO L130 PetriNetUnfolder]: 4/88 cut-off events. [2022-11-25 18:35:56,726 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 18:35:56,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 88 events. 4/88 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2022-11-25 18:35:56,731 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 90 transitions, 196 flow [2022-11-25 18:35:56,736 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 75 transitions, 162 flow [2022-11-25 18:35:56,740 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:35:56,798 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 75 transitions, 162 flow [2022-11-25 18:35:56,802 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 75 transitions, 162 flow [2022-11-25 18:35:56,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 75 transitions, 162 flow [2022-11-25 18:35:56,848 INFO L130 PetriNetUnfolder]: 3/75 cut-off events. [2022-11-25 18:35:56,848 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 18:35:56,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 75 events. 3/75 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 40. Up to 2 conditions per place. [2022-11-25 18:35:56,850 INFO L119 LiptonReduction]: Number of co-enabled transitions 156 [2022-11-25 18:36:00,162 INFO L134 LiptonReduction]: Checked pairs total: 195 [2022-11-25 18:36:00,163 INFO L136 LiptonReduction]: Total number of compositions: 67 [2022-11-25 18:36:00,180 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:36:00,187 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@45559a3e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:36:00,187 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-25 18:36:00,193 INFO L130 PetriNetUnfolder]: 2/13 cut-off events. [2022-11-25 18:36:00,193 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 18:36:00,193 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:36:00,194 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:36:00,195 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 18:36:00,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:36:00,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1365972972, now seen corresponding path program 1 times [2022-11-25 18:36:00,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:36:00,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578119981] [2022-11-25 18:36:00,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:36:00,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:36:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:36:00,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:36:00,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:36:00,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578119981] [2022-11-25 18:36:00,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578119981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:36:00,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:36:00,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:36:00,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297102241] [2022-11-25 18:36:00,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:36:00,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:36:00,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:36:00,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:36:00,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:36:00,592 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 157 [2022-11-25 18:36:00,596 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 14 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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) [2022-11-25 18:36:00,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:36:00,597 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 157 [2022-11-25 18:36:00,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:36:00,663 INFO L130 PetriNetUnfolder]: 5/20 cut-off events. [2022-11-25 18:36:00,664 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 18:36:00,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 20 events. 5/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 11 event pairs, 2 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 29. Up to 17 conditions per place. [2022-11-25 18:36:00,665 INFO L137 encePairwiseOnDemand]: 155/157 looper letters, 13 selfloop transitions, 1 changer transitions 0/14 dead transitions. [2022-11-25 18:36:00,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 14 transitions, 68 flow [2022-11-25 18:36:00,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:36:00,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:36:00,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 255 transitions. [2022-11-25 18:36:00,681 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5414012738853503 [2022-11-25 18:36:00,682 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 255 transitions. [2022-11-25 18:36:00,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 255 transitions. [2022-11-25 18:36:00,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:36:00,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 255 transitions. [2022-11-25 18:36:00,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 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) [2022-11-25 18:36:00,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 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) [2022-11-25 18:36:00,697 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 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) [2022-11-25 18:36:00,699 INFO L175 Difference]: Start difference. First operand has 19 places, 14 transitions, 40 flow. Second operand 3 states and 255 transitions. [2022-11-25 18:36:00,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 14 transitions, 68 flow [2022-11-25 18:36:00,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 14 transitions, 60 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-25 18:36:00,704 INFO L231 Difference]: Finished difference. Result has 17 places, 13 transitions, 32 flow [2022-11-25 18:36:00,706 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=32, PETRI_PLACES=17, PETRI_TRANSITIONS=13} [2022-11-25 18:36:00,710 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, -2 predicate places. [2022-11-25 18:36:00,711 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 13 transitions, 32 flow [2022-11-25 18:36:00,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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) [2022-11-25 18:36:00,711 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:36:00,711 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:36:00,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:36:00,712 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 18:36:00,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:36:00,713 INFO L85 PathProgramCache]: Analyzing trace with hash 599447548, now seen corresponding path program 1 times [2022-11-25 18:36:00,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:36:00,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673998181] [2022-11-25 18:36:00,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:36:00,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:36:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:36:01,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:36:01,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:36:01,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673998181] [2022-11-25 18:36:01,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673998181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:36:01,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:36:01,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:36:01,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043330717] [2022-11-25 18:36:01,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:36:01,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:36:01,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:36:01,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:36:01,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:36:01,360 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 157 [2022-11-25 18:36:01,361 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 13 transitions, 32 flow. Second operand has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 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) [2022-11-25 18:36:01,361 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:36:01,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 157 [2022-11-25 18:36:01,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:36:01,436 INFO L130 PetriNetUnfolder]: 9/28 cut-off events. [2022-11-25 18:36:01,436 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 18:36:01,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 28 events. 9/28 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 2 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 45. Up to 13 conditions per place. [2022-11-25 18:36:01,437 INFO L137 encePairwiseOnDemand]: 153/157 looper letters, 13 selfloop transitions, 5 changer transitions 0/18 dead transitions. [2022-11-25 18:36:01,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 18 transitions, 78 flow [2022-11-25 18:36:01,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:36:01,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 18:36:01,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 303 transitions. [2022-11-25 18:36:01,440 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.482484076433121 [2022-11-25 18:36:01,441 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 303 transitions. [2022-11-25 18:36:01,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 303 transitions. [2022-11-25 18:36:01,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:36:01,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 303 transitions. [2022-11-25 18:36:01,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 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) [2022-11-25 18:36:01,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 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) [2022-11-25 18:36:01,446 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 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) [2022-11-25 18:36:01,446 INFO L175 Difference]: Start difference. First operand has 17 places, 13 transitions, 32 flow. Second operand 4 states and 303 transitions. [2022-11-25 18:36:01,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 18 transitions, 78 flow [2022-11-25 18:36:01,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 77 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:36:01,447 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 60 flow [2022-11-25 18:36:01,448 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=60, PETRI_PLACES=21, PETRI_TRANSITIONS=16} [2022-11-25 18:36:01,448 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 2 predicate places. [2022-11-25 18:36:01,449 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 60 flow [2022-11-25 18:36:01,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 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) [2022-11-25 18:36:01,449 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:36:01,450 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:36:01,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 18:36:01,450 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 18:36:01,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:36:01,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1402529338, now seen corresponding path program 1 times [2022-11-25 18:36:01,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:36:01,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814773878] [2022-11-25 18:36:01,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:36:01,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:36:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:36:01,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:36:01,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:36:01,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814773878] [2022-11-25 18:36:01,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814773878] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:36:01,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242163579] [2022-11-25 18:36:01,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:36:01,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:36:01,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884d44c9-4350-44bc-ada6-21882d569513/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:36:01,958 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884d44c9-4350-44bc-ada6-21882d569513/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:36:01,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884d44c9-4350-44bc-ada6-21882d569513/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 18:36:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:36:02,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-25 18:36:02,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:36:02,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:36:02,180 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 [2022-11-25 18:36:02,201 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-25 18:36:02,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-11-25 18:36:02,273 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 [2022-11-25 18:36:02,411 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:36:02,413 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:36:02,424 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-25 18:36:02,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 23 [2022-11-25 18:36:02,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:36:02,513 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-25 18:36:02,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-11-25 18:36:02,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:36:02,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:36:02,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:36:02,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242163579] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:36:02,788 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:36:02,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 17 [2022-11-25 18:36:02,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352261804] [2022-11-25 18:36:02,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:36:02,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-25 18:36:02,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:36:02,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-25 18:36:02,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-11-25 18:36:04,478 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 157 [2022-11-25 18:36:04,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 60 flow. Second operand has 18 states, 18 states have (on average 67.0) internal successors, (1206), 18 states have internal predecessors, (1206), 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) [2022-11-25 18:36:04,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:36:04,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 157 [2022-11-25 18:36:04,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:36:05,080 INFO L130 PetriNetUnfolder]: 14/45 cut-off events. [2022-11-25 18:36:05,081 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-25 18:36:05,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 45 events. 14/45 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 70 event pairs, 1 based on Foata normal form. 2/47 useless extension candidates. Maximal degree in co-relation 115. Up to 14 conditions per place. [2022-11-25 18:36:05,082 INFO L137 encePairwiseOnDemand]: 152/157 looper letters, 17 selfloop transitions, 8 changer transitions 5/30 dead transitions. [2022-11-25 18:36:05,085 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 165 flow [2022-11-25 18:36:05,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:36:05,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 18:36:05,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 618 transitions. [2022-11-25 18:36:05,089 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43736730360934184 [2022-11-25 18:36:05,090 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 618 transitions. [2022-11-25 18:36:05,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 618 transitions. [2022-11-25 18:36:05,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:36:05,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 618 transitions. [2022-11-25 18:36:05,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 68.66666666666667) internal successors, (618), 9 states have internal predecessors, (618), 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) [2022-11-25 18:36:05,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 157.0) internal successors, (1570), 10 states have internal predecessors, (1570), 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) [2022-11-25 18:36:05,099 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 157.0) internal successors, (1570), 10 states have internal predecessors, (1570), 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) [2022-11-25 18:36:05,100 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 60 flow. Second operand 9 states and 618 transitions. [2022-11-25 18:36:05,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 165 flow [2022-11-25 18:36:05,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 30 transitions, 163 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-25 18:36:05,102 INFO L231 Difference]: Finished difference. Result has 33 places, 19 transitions, 104 flow [2022-11-25 18:36:05,103 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=104, PETRI_PLACES=33, PETRI_TRANSITIONS=19} [2022-11-25 18:36:05,104 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 14 predicate places. [2022-11-25 18:36:05,104 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 19 transitions, 104 flow [2022-11-25 18:36:05,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 67.0) internal successors, (1206), 18 states have internal predecessors, (1206), 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) [2022-11-25 18:36:05,106 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:36:05,106 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:36:05,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884d44c9-4350-44bc-ada6-21882d569513/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 18:36:05,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884d44c9-4350-44bc-ada6-21882d569513/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-25 18:36:05,313 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 18:36:05,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:36:05,314 INFO L85 PathProgramCache]: Analyzing trace with hash 837515132, now seen corresponding path program 2 times [2022-11-25 18:36:05,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:36:05,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424837555] [2022-11-25 18:36:05,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:36:05,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:36:05,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:36:06,117 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:36:06,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:36:06,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424837555] [2022-11-25 18:36:06,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424837555] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:36:06,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515517139] [2022-11-25 18:36:06,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:36:06,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:36:06,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884d44c9-4350-44bc-ada6-21882d569513/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:36:06,123 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884d44c9-4350-44bc-ada6-21882d569513/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:36:06,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884d44c9-4350-44bc-ada6-21882d569513/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 18:36:06,266 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:36:06,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:36:06,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-25 18:36:06,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:36:06,341 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-25 18:36:06,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-11-25 18:36:06,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2022-11-25 18:36:06,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:36:06,486 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-25 18:36:06,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2022-11-25 18:36:06,540 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 [2022-11-25 18:36:06,643 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 [2022-11-25 18:36:06,690 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 [2022-11-25 18:36:06,745 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 [2022-11-25 18:36:06,790 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 [2022-11-25 18:36:06,830 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:36:06,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:36:06,865 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_113 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_113) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| 1)))) is different from false [2022-11-25 18:36:06,872 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_113 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_113) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (+ 2 |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1|)))) is different from false [2022-11-25 18:36:06,905 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_113 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_113) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (+ 3 |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1|)))) is different from false [2022-11-25 18:36:06,912 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_113 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_113) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| 4)))) is different from false [2022-11-25 18:36:07,126 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2022-11-25 18:36:07,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515517139] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:36:07,127 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:36:07,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 26 [2022-11-25 18:36:07,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087649529] [2022-11-25 18:36:07,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:36:07,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-25 18:36:07,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:36:07,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-25 18:36:07,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=450, Unknown=5, NotChecked=180, Total=702 [2022-11-25 18:36:07,209 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 157 [2022-11-25 18:36:07,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 19 transitions, 104 flow. Second operand has 27 states, 27 states have (on average 45.629629629629626) internal successors, (1232), 27 states have internal predecessors, (1232), 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) [2022-11-25 18:36:07,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:36:07,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 157 [2022-11-25 18:36:07,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:36:08,253 INFO L130 PetriNetUnfolder]: 14/48 cut-off events. [2022-11-25 18:36:08,253 INFO L131 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2022-11-25 18:36:08,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 48 events. 14/48 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 75 event pairs, 1 based on Foata normal form. 2/50 useless extension candidates. Maximal degree in co-relation 176. Up to 16 conditions per place. [2022-11-25 18:36:08,255 INFO L137 encePairwiseOnDemand]: 152/157 looper letters, 16 selfloop transitions, 13 changer transitions 4/33 dead transitions. [2022-11-25 18:36:08,255 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 33 transitions, 233 flow [2022-11-25 18:36:08,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 18:36:08,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-25 18:36:08,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 518 transitions. [2022-11-25 18:36:08,258 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.2999420961204401 [2022-11-25 18:36:08,258 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 518 transitions. [2022-11-25 18:36:08,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 518 transitions. [2022-11-25 18:36:08,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:36:08,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 518 transitions. [2022-11-25 18:36:08,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 47.09090909090909) internal successors, (518), 11 states have internal predecessors, (518), 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) [2022-11-25 18:36:08,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 157.0) internal successors, (1884), 12 states have internal predecessors, (1884), 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) [2022-11-25 18:36:08,264 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 157.0) internal successors, (1884), 12 states have internal predecessors, (1884), 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) [2022-11-25 18:36:08,264 INFO L175 Difference]: Start difference. First operand has 33 places, 19 transitions, 104 flow. Second operand 11 states and 518 transitions. [2022-11-25 18:36:08,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 33 transitions, 233 flow [2022-11-25 18:36:08,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 33 transitions, 199 flow, removed 12 selfloop flow, removed 5 redundant places. [2022-11-25 18:36:08,267 INFO L231 Difference]: Finished difference. Result has 40 places, 24 transitions, 142 flow [2022-11-25 18:36:08,267 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=142, PETRI_PLACES=40, PETRI_TRANSITIONS=24} [2022-11-25 18:36:08,268 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 21 predicate places. [2022-11-25 18:36:08,268 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 24 transitions, 142 flow [2022-11-25 18:36:08,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 45.629629629629626) internal successors, (1232), 27 states have internal predecessors, (1232), 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) [2022-11-25 18:36:08,269 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:36:08,270 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:36:08,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884d44c9-4350-44bc-ada6-21882d569513/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 18:36:08,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884d44c9-4350-44bc-ada6-21882d569513/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:36:08,475 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 18:36:08,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:36:08,476 INFO L85 PathProgramCache]: Analyzing trace with hash 192689850, now seen corresponding path program 3 times [2022-11-25 18:36:08,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:36:08,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888298883] [2022-11-25 18:36:08,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:36:08,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:36:08,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:36:09,196 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:36:09,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:36:09,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888298883] [2022-11-25 18:36:09,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888298883] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:36:09,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847262258] [2022-11-25 18:36:09,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 18:36:09,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:36:09,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884d44c9-4350-44bc-ada6-21882d569513/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:36:09,198 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884d44c9-4350-44bc-ada6-21882d569513/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:36:09,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884d44c9-4350-44bc-ada6-21882d569513/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 18:36:09,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-25 18:36:09,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:36:09,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-25 18:36:09,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:36:09,388 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-25 18:36:09,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-11-25 18:36:09,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2022-11-25 18:36:09,494 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-25 18:36:09,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-25 18:36:09,538 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 [2022-11-25 18:36:09,638 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 [2022-11-25 18:36:09,694 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 [2022-11-25 18:36:09,746 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 [2022-11-25 18:36:09,796 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 [2022-11-25 18:36:09,847 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 [2022-11-25 18:36:09,887 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:36:09,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:36:09,925 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_169 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_169) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| 1)))) is different from false [2022-11-25 18:36:09,990 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_169 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_169) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (+ 3 |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1|)))) is different from false [2022-11-25 18:36:09,997 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_169 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_169) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| 4)))) is different from false [2022-11-25 18:36:10,004 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_169 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_169) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (+ 5 |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1|)))) is different from false [2022-11-25 18:36:10,225 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 14 not checked. [2022-11-25 18:36:10,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847262258] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:36:10,225 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:36:10,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 29 [2022-11-25 18:36:10,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710667900] [2022-11-25 18:36:10,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:36:10,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-25 18:36:10,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:36:10,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-25 18:36:10,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=583, Unknown=7, NotChecked=204, Total=870 [2022-11-25 18:36:10,367 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 157 [2022-11-25 18:36:10,369 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 24 transitions, 142 flow. Second operand has 30 states, 30 states have (on average 45.56666666666667) internal successors, (1367), 30 states have internal predecessors, (1367), 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) [2022-11-25 18:36:10,369 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:36:10,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 157 [2022-11-25 18:36:10,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:36:12,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 18:36:13,932 INFO L130 PetriNetUnfolder]: 14/48 cut-off events. [2022-11-25 18:36:13,932 INFO L131 PetriNetUnfolder]: For 100/100 co-relation queries the response was YES. [2022-11-25 18:36:13,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 48 events. 14/48 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 58 event pairs, 1 based on Foata normal form. 2/50 useless extension candidates. Maximal degree in co-relation 189. Up to 17 conditions per place. [2022-11-25 18:36:13,934 INFO L137 encePairwiseOnDemand]: 152/157 looper letters, 18 selfloop transitions, 14 changer transitions 2/34 dead transitions. [2022-11-25 18:36:13,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 34 transitions, 277 flow [2022-11-25 18:36:13,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 18:36:13,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 18:36:13,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 561 transitions. [2022-11-25 18:36:13,938 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.29777070063694266 [2022-11-25 18:36:13,938 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 561 transitions. [2022-11-25 18:36:13,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 561 transitions. [2022-11-25 18:36:13,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:36:13,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 561 transitions. [2022-11-25 18:36:13,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 46.75) internal successors, (561), 12 states have internal predecessors, (561), 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) [2022-11-25 18:36:13,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 157.0) internal successors, (2041), 13 states have internal predecessors, (2041), 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) [2022-11-25 18:36:13,945 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 157.0) internal successors, (2041), 13 states have internal predecessors, (2041), 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) [2022-11-25 18:36:13,945 INFO L175 Difference]: Start difference. First operand has 40 places, 24 transitions, 142 flow. Second operand 12 states and 561 transitions. [2022-11-25 18:36:13,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 34 transitions, 277 flow [2022-11-25 18:36:13,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 34 transitions, 251 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-11-25 18:36:13,949 INFO L231 Difference]: Finished difference. Result has 47 places, 27 transitions, 182 flow [2022-11-25 18:36:13,949 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=182, PETRI_PLACES=47, PETRI_TRANSITIONS=27} [2022-11-25 18:36:13,950 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 28 predicate places. [2022-11-25 18:36:13,951 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 27 transitions, 182 flow [2022-11-25 18:36:13,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 45.56666666666667) internal successors, (1367), 30 states have internal predecessors, (1367), 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) [2022-11-25 18:36:13,952 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:36:13,952 INFO L209 CegarLoopForPetriNet]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:36:13,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884d44c9-4350-44bc-ada6-21882d569513/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 18:36:14,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884d44c9-4350-44bc-ada6-21882d569513/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:36:14,159 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 18:36:14,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:36:14,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1677942588, now seen corresponding path program 4 times [2022-11-25 18:36:14,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:36:14,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603431172] [2022-11-25 18:36:14,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:36:14,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:36:14,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:36:15,024 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:36:15,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:36:15,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603431172] [2022-11-25 18:36:15,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603431172] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:36:15,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053663907] [2022-11-25 18:36:15,025 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 18:36:15,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:36:15,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884d44c9-4350-44bc-ada6-21882d569513/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:36:15,031 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884d44c9-4350-44bc-ada6-21882d569513/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:36:15,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884d44c9-4350-44bc-ada6-21882d569513/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 18:36:15,176 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 18:36:15,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:36:15,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-25 18:36:15,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:36:15,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:36:15,208 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 [2022-11-25 18:36:15,236 INFO L321 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2022-11-25 18:36:15,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2022-11-25 18:36:15,340 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 [2022-11-25 18:36:15,455 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:36:15,458 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:36:15,472 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-25 18:36:15,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 23 [2022-11-25 18:36:15,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:36:15,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:36:15,547 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:36:15,550 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-25 18:36:15,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2022-11-25 18:36:15,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:36:15,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:36:15,622 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:36:15,625 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-25 18:36:15,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2022-11-25 18:36:15,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:36:15,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:36:15,713 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:36:15,718 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-25 18:36:15,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2022-11-25 18:36:15,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:36:15,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:36:15,794 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:36:15,797 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-25 18:36:15,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2022-11-25 18:36:15,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:36:15,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:36:15,876 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:36:15,878 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-25 18:36:15,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2022-11-25 18:36:15,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:36:15,958 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-25 18:36:15,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2022-11-25 18:36:16,019 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:36:16,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:36:33,903 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 6 refuted. 6 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 18:36:33,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053663907] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:36:33,903 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:36:33,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 7] total 29 [2022-11-25 18:36:33,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912843445] [2022-11-25 18:36:33,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:36:33,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-25 18:36:33,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:36:33,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-25 18:36:33,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=743, Unknown=1, NotChecked=0, Total=870 [2022-11-25 18:36:36,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 18:36:38,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 18:36:43,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 18:36:45,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 18:36:47,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 18:36:49,153 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 157 [2022-11-25 18:36:49,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 27 transitions, 182 flow. Second operand has 30 states, 30 states have (on average 45.666666666666664) internal successors, (1370), 30 states have internal predecessors, (1370), 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) [2022-11-25 18:36:49,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:36:49,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 157 [2022-11-25 18:36:49,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:36:50,339 INFO L130 PetriNetUnfolder]: 12/43 cut-off events. [2022-11-25 18:36:50,339 INFO L131 PetriNetUnfolder]: For 115/115 co-relation queries the response was YES. [2022-11-25 18:36:50,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 43 events. 12/43 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 1 based on Foata normal form. 3/46 useless extension candidates. Maximal degree in co-relation 180. Up to 14 conditions per place. [2022-11-25 18:36:50,340 INFO L137 encePairwiseOnDemand]: 152/157 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2022-11-25 18:36:50,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 30 transitions, 261 flow [2022-11-25 18:36:50,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 18:36:50,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-25 18:36:50,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 513 transitions. [2022-11-25 18:36:50,343 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.29704690214244356 [2022-11-25 18:36:50,343 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 513 transitions. [2022-11-25 18:36:50,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 513 transitions. [2022-11-25 18:36:50,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:36:50,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 513 transitions. [2022-11-25 18:36:50,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 46.63636363636363) internal successors, (513), 11 states have internal predecessors, (513), 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) [2022-11-25 18:36:50,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 157.0) internal successors, (1884), 12 states have internal predecessors, (1884), 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) [2022-11-25 18:36:50,348 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 157.0) internal successors, (1884), 12 states have internal predecessors, (1884), 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) [2022-11-25 18:36:50,349 INFO L175 Difference]: Start difference. First operand has 47 places, 27 transitions, 182 flow. Second operand 11 states and 513 transitions. [2022-11-25 18:36:50,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 30 transitions, 261 flow [2022-11-25 18:36:50,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 30 transitions, 223 flow, removed 6 selfloop flow, removed 9 redundant places. [2022-11-25 18:36:50,352 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2022-11-25 18:36:50,352 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2022-11-25 18:36:50,353 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 27 predicate places. [2022-11-25 18:36:50,353 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2022-11-25 18:36:50,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 45.666666666666664) internal successors, (1370), 30 states have internal predecessors, (1370), 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) [2022-11-25 18:36:50,356 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-11-25 18:36:50,357 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-11-25 18:36:50,357 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-11-25 18:36:50,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884d44c9-4350-44bc-ada6-21882d569513/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 18:36:50,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884d44c9-4350-44bc-ada6-21882d569513/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-25 18:36:50,564 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2022-11-25 18:36:50,567 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 18:36:50,568 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 18:36:50,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:36:50 BasicIcfg [2022-11-25 18:36:50,570 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 18:36:50,571 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 18:36:50,571 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 18:36:50,571 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 18:36:50,572 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:35:56" (3/4) ... [2022-11-25 18:36:50,575 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 18:36:50,582 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-25 18:36:50,582 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-25 18:36:50,587 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-25 18:36:50,587 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-11-25 18:36:50,588 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-25 18:36:50,588 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 18:36:50,588 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 18:36:50,617 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884d44c9-4350-44bc-ada6-21882d569513/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 18:36:50,617 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 18:36:50,618 INFO L158 Benchmark]: Toolchain (without parser) took 55533.25ms. Allocated memory was 151.0MB in the beginning and 226.5MB in the end (delta: 75.5MB). Free memory was 120.9MB in the beginning and 156.2MB in the end (delta: -35.3MB). Peak memory consumption was 40.1MB. Max. memory is 16.1GB. [2022-11-25 18:36:50,618 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 121.6MB. Free memory is still 90.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:36:50,619 INFO L158 Benchmark]: CACSL2BoogieTranslator took 748.79ms. Allocated memory is still 151.0MB. Free memory was 120.5MB in the beginning and 88.3MB in the end (delta: 32.2MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-11-25 18:36:50,619 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.56ms. Allocated memory is still 151.0MB. Free memory was 88.3MB in the beginning and 85.8MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 18:36:50,619 INFO L158 Benchmark]: Boogie Preprocessor took 27.68ms. Allocated memory is still 151.0MB. Free memory was 85.8MB in the beginning and 84.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:36:50,620 INFO L158 Benchmark]: RCFGBuilder took 600.36ms. Allocated memory is still 151.0MB. Free memory was 84.1MB in the beginning and 118.4MB in the end (delta: -34.3MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. [2022-11-25 18:36:50,620 INFO L158 Benchmark]: TraceAbstraction took 54034.26ms. Allocated memory was 151.0MB in the beginning and 226.5MB in the end (delta: 75.5MB). Free memory was 117.5MB in the beginning and 159.3MB in the end (delta: -41.8MB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. [2022-11-25 18:36:50,620 INFO L158 Benchmark]: Witness Printer took 46.63ms. Allocated memory is still 226.5MB. Free memory was 159.3MB in the beginning and 156.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 18:36:50,622 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 121.6MB. Free memory is still 90.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 748.79ms. Allocated memory is still 151.0MB. Free memory was 120.5MB in the beginning and 88.3MB in the end (delta: 32.2MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.56ms. Allocated memory is still 151.0MB. Free memory was 88.3MB in the beginning and 85.8MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.68ms. Allocated memory is still 151.0MB. Free memory was 85.8MB in the beginning and 84.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 600.36ms. Allocated memory is still 151.0MB. Free memory was 84.1MB in the beginning and 118.4MB in the end (delta: -34.3MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. * TraceAbstraction took 54034.26ms. Allocated memory was 151.0MB in the beginning and 226.5MB in the end (delta: 75.5MB). Free memory was 117.5MB in the beginning and 159.3MB in the end (delta: -41.8MB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. * Witness Printer took 46.63ms. Allocated memory is still 226.5MB. Free memory was 159.3MB in the beginning and 156.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.4s, 79 PlacesBefore, 19 PlacesAfterwards, 75 TransitionsBefore, 14 TransitionsAfterwards, 156 CoEnabledTransitionPairs, 6 FixpointIterations, 36 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 67 TotalNumberOfCompositions, 195 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 174, independent: 164, independent conditional: 0, independent unconditional: 164, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 129, independent: 122, independent conditional: 0, independent unconditional: 122, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 129, independent: 122, independent conditional: 0, independent unconditional: 122, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 7, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 19, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 174, independent: 42, independent conditional: 0, independent unconditional: 42, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 129, unknown conditional: 0, unknown unconditional: 129] , Statistics on independence cache: Total cache size (in pairs): 7, Positive cache size: 5, Positive conditional cache size: 0, Positive unconditional cache size: 5, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 1107]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 114 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 53.9s, OverallIterations: 6, TraceHistogramMax: 6, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 24.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 82 mSolverCounterUnknown, 1035 SdHoareTripleChecker+Valid, 21.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 920 mSDsluCounter, 1678 SdHoareTripleChecker+Invalid, 20.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 283 IncrementalHoareTripleChecker+Unchecked, 1660 mSDsCounter, 221 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4792 IncrementalHoareTripleChecker+Invalid, 5378 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 221 mSolverCounterUnsat, 18 mSDtfsCounter, 4792 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 210 GetRequests, 66 SyntacticMatches, 10 SemanticMatches, 134 ConstructedPredicates, 8 IntricatePredicates, 2 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 22.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=182occurred in iteration=5, InterpolantAutomatonStates: 50, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 24.5s InterpolantComputationTime, 151 NumberOfCodeBlocks, 151 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 201 ConstructedInterpolants, 43 QuantifiedInterpolants, 3199 SizeOfPredicates, 35 NumberOfNonLiveVariables, 840 ConjunctsInSsa, 187 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 9/141 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! [2022-11-25 18:36:50,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884d44c9-4350-44bc-ada6-21882d569513/bin/uautomizer-ZsLfNo2U6R/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