./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b68e155d55184c39a54e11a2c420443b840324481c8995060134516395f2d120 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 21:10:12,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 21:10:12,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 21:10:12,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 21:10:12,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 21:10:12,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 21:10:12,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 21:10:12,179 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 21:10:12,182 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 21:10:12,187 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 21:10:12,190 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 21:10:12,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 21:10:12,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 21:10:12,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 21:10:12,205 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 21:10:12,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 21:10:12,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 21:10:12,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 21:10:12,214 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 21:10:12,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 21:10:12,225 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 21:10:12,227 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 21:10:12,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 21:10:12,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 21:10:12,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 21:10:12,242 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 21:10:12,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 21:10:12,245 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 21:10:12,246 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 21:10:12,248 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 21:10:12,250 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 21:10:12,251 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 21:10:12,254 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 21:10:12,257 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 21:10:12,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 21:10:12,259 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 21:10:12,260 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 21:10:12,261 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 21:10:12,261 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 21:10:12,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 21:10:12,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 21:10:12,265 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 21:10:12,327 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 21:10:12,331 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 21:10:12,332 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 21:10:12,333 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 21:10:12,334 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 21:10:12,334 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 21:10:12,336 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 21:10:12,336 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 21:10:12,336 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 21:10:12,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 21:10:12,338 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 21:10:12,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 21:10:12,339 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 21:10:12,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 21:10:12,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 21:10:12,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 21:10:12,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 21:10:12,341 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 21:10:12,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 21:10:12,342 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 21:10:12,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 21:10:12,343 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 21:10:12,343 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 21:10:12,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 21:10:12,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:10:12,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 21:10:12,345 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 21:10:12,345 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 21:10:12,345 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 21:10:12,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 21:10:12,346 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 21:10:12,347 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 21:10:12,347 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 21:10:12,348 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b68e155d55184c39a54e11a2c420443b840324481c8995060134516395f2d120 [2022-11-18 21:10:12,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 21:10:12,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 21:10:12,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 21:10:12,830 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 21:10:12,832 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 21:10:12,834 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c [2022-11-18 21:10:12,935 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/data/457410019/27e8725a096046d5a2dfc3777d302224/FLAGededf5e19 [2022-11-18 21:10:13,707 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 21:10:13,714 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c [2022-11-18 21:10:13,724 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/data/457410019/27e8725a096046d5a2dfc3777d302224/FLAGededf5e19 [2022-11-18 21:10:14,007 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/data/457410019/27e8725a096046d5a2dfc3777d302224 [2022-11-18 21:10:14,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 21:10:14,015 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 21:10:14,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 21:10:14,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 21:10:14,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 21:10:14,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:10:14" (1/1) ... [2022-11-18 21:10:14,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c28f0f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:14, skipping insertion in model container [2022-11-18 21:10:14,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:10:14" (1/1) ... [2022-11-18 21:10:14,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 21:10:14,067 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 21:10:14,458 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c[3097,3110] [2022-11-18 21:10:14,489 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:10:14,507 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 21:10:14,581 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c[3097,3110] [2022-11-18 21:10:14,591 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:10:14,620 INFO L208 MainTranslator]: Completed translation [2022-11-18 21:10:14,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:14 WrapperNode [2022-11-18 21:10:14,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 21:10:14,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 21:10:14,624 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 21:10:14,624 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 21:10:14,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:14" (1/1) ... [2022-11-18 21:10:14,669 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:14" (1/1) ... [2022-11-18 21:10:14,727 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 17, calls inlined = 25, statements flattened = 275 [2022-11-18 21:10:14,728 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 21:10:14,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 21:10:14,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 21:10:14,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 21:10:14,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:14" (1/1) ... [2022-11-18 21:10:14,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:14" (1/1) ... [2022-11-18 21:10:14,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:14" (1/1) ... [2022-11-18 21:10:14,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:14" (1/1) ... [2022-11-18 21:10:14,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:14" (1/1) ... [2022-11-18 21:10:14,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:14" (1/1) ... [2022-11-18 21:10:14,821 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:14" (1/1) ... [2022-11-18 21:10:14,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:14" (1/1) ... [2022-11-18 21:10:14,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 21:10:14,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 21:10:14,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 21:10:14,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 21:10:14,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:14" (1/1) ... [2022-11-18 21:10:14,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:10:14,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:10:14,886 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 21:10:14,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 21:10:14,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 21:10:14,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 21:10:14,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 21:10:14,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 21:10:14,948 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 21:10:14,948 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 21:10:14,949 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 21:10:14,949 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 21:10:14,949 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 21:10:14,949 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 21:10:14,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 21:10:14,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 21:10:14,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 21:10:14,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 21:10:14,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 21:10:14,953 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 21:10:15,230 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 21:10:15,245 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 21:10:15,973 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 21:10:15,990 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 21:10:15,990 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-18 21:10:15,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:10:15 BoogieIcfgContainer [2022-11-18 21:10:15,993 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 21:10:15,996 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 21:10:15,996 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 21:10:16,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 21:10:16,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:10:14" (1/3) ... [2022-11-18 21:10:16,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@582deb56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:10:16, skipping insertion in model container [2022-11-18 21:10:16,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:14" (2/3) ... [2022-11-18 21:10:16,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@582deb56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:10:16, skipping insertion in model container [2022-11-18 21:10:16,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:10:15" (3/3) ... [2022-11-18 21:10:16,005 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-subst.wvr.c [2022-11-18 21:10:16,020 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 21:10:16,037 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 21:10:16,038 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 21:10:16,038 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 21:10:16,253 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 21:10:16,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 345 places, 364 transitions, 752 flow [2022-11-18 21:10:16,621 INFO L130 PetriNetUnfolder]: 29/361 cut-off events. [2022-11-18 21:10:16,621 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 21:10:16,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 374 conditions, 361 events. 29/361 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 565 event pairs, 0 based on Foata normal form. 0/331 useless extension candidates. Maximal degree in co-relation 272. Up to 2 conditions per place. [2022-11-18 21:10:16,634 INFO L82 GeneralOperation]: Start removeDead. Operand has 345 places, 364 transitions, 752 flow [2022-11-18 21:10:16,644 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 331 places, 350 transitions, 718 flow [2022-11-18 21:10:16,658 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 21:10:16,667 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;@5084eaf2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 21:10:16,667 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-18 21:10:16,785 INFO L130 PetriNetUnfolder]: 29/349 cut-off events. [2022-11-18 21:10:16,785 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 21:10:16,786 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:10:16,787 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:10:16,788 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 21:10:16,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:16,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1164257302, now seen corresponding path program 1 times [2022-11-18 21:10:16,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:16,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701105856] [2022-11-18 21:10:16,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:16,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:17,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:17,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:10:17,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:17,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701105856] [2022-11-18 21:10:17,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701105856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:10:17,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:10:17,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:10:17,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334267799] [2022-11-18 21:10:17,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:10:17,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 21:10:17,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:17,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 21:10:17,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 21:10:17,407 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 334 out of 364 [2022-11-18 21:10:17,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 350 transitions, 718 flow. Second operand has 2 states, 2 states have (on average 340.0) internal successors, (680), 2 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:17,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:10:17,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 334 of 364 [2022-11-18 21:10:17,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:10:17,555 INFO L130 PetriNetUnfolder]: 6/327 cut-off events. [2022-11-18 21:10:17,556 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-11-18 21:10:17,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 327 events. 6/327 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 542 event pairs, 0 based on Foata normal form. 35/339 useless extension candidates. Maximal degree in co-relation 257. Up to 7 conditions per place. [2022-11-18 21:10:17,563 INFO L137 encePairwiseOnDemand]: 341/364 looper letters, 6 selfloop transitions, 0 changer transitions 8/327 dead transitions. [2022-11-18 21:10:17,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 327 transitions, 684 flow [2022-11-18 21:10:17,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 21:10:17,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 21:10:17,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 697 transitions. [2022-11-18 21:10:17,597 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9574175824175825 [2022-11-18 21:10:17,598 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 697 transitions. [2022-11-18 21:10:17,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 697 transitions. [2022-11-18 21:10:17,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:10:17,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 697 transitions. [2022-11-18 21:10:17,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 348.5) internal successors, (697), 2 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:17,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 364.0) internal successors, (1092), 3 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:17,633 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 364.0) internal successors, (1092), 3 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:17,636 INFO L175 Difference]: Start difference. First operand has 331 places, 350 transitions, 718 flow. Second operand 2 states and 697 transitions. [2022-11-18 21:10:17,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 327 transitions, 684 flow [2022-11-18 21:10:17,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 327 transitions, 672 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 21:10:17,660 INFO L231 Difference]: Finished difference. Result has 326 places, 319 transitions, 644 flow [2022-11-18 21:10:17,663 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=644, PETRI_PLACES=326, PETRI_TRANSITIONS=319} [2022-11-18 21:10:17,668 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, -5 predicate places. [2022-11-18 21:10:17,669 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 319 transitions, 644 flow [2022-11-18 21:10:17,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 340.0) internal successors, (680), 2 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:17,670 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:10:17,671 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:10:17,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 21:10:17,673 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 21:10:17,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:17,675 INFO L85 PathProgramCache]: Analyzing trace with hash -487977546, now seen corresponding path program 1 times [2022-11-18 21:10:17,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:17,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147573016] [2022-11-18 21:10:17,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:17,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:18,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:10:18,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:18,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147573016] [2022-11-18 21:10:18,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147573016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:10:18,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:10:18,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:10:18,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683842770] [2022-11-18 21:10:18,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:10:18,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 21:10:18,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:18,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 21:10:18,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:10:18,377 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 364 [2022-11-18 21:10:18,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 319 transitions, 644 flow. Second operand has 5 states, 5 states have (on average 304.0) internal successors, (1520), 5 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:18,382 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:10:18,388 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 364 [2022-11-18 21:10:18,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:10:18,731 INFO L130 PetriNetUnfolder]: 6/337 cut-off events. [2022-11-18 21:10:18,732 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 21:10:18,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 337 events. 6/337 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 523 event pairs, 0 based on Foata normal form. 0/322 useless extension candidates. Maximal degree in co-relation 394. Up to 38 conditions per place. [2022-11-18 21:10:18,739 INFO L137 encePairwiseOnDemand]: 349/364 looper letters, 42 selfloop transitions, 12 changer transitions 0/331 dead transitions. [2022-11-18 21:10:18,740 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 331 transitions, 776 flow [2022-11-18 21:10:18,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:10:18,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:10:18,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1547 transitions. [2022-11-18 21:10:18,748 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.85 [2022-11-18 21:10:18,748 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1547 transitions. [2022-11-18 21:10:18,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1547 transitions. [2022-11-18 21:10:18,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:10:18,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1547 transitions. [2022-11-18 21:10:18,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 309.4) internal successors, (1547), 5 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:18,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 364.0) internal successors, (2184), 6 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:18,764 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 364.0) internal successors, (2184), 6 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:18,765 INFO L175 Difference]: Start difference. First operand has 326 places, 319 transitions, 644 flow. Second operand 5 states and 1547 transitions. [2022-11-18 21:10:18,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 331 transitions, 776 flow [2022-11-18 21:10:18,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 331 transitions, 776 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 21:10:18,780 INFO L231 Difference]: Finished difference. Result has 323 places, 322 transitions, 692 flow [2022-11-18 21:10:18,781 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=692, PETRI_PLACES=323, PETRI_TRANSITIONS=322} [2022-11-18 21:10:18,783 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, -8 predicate places. [2022-11-18 21:10:18,783 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 322 transitions, 692 flow [2022-11-18 21:10:18,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.0) internal successors, (1520), 5 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:18,785 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:10:18,786 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:10:18,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 21:10:18,787 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 21:10:18,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:18,791 INFO L85 PathProgramCache]: Analyzing trace with hash -968534817, now seen corresponding path program 1 times [2022-11-18 21:10:18,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:18,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427436517] [2022-11-18 21:10:18,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:18,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:19,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 21:10:19,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:19,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427436517] [2022-11-18 21:10:19,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427436517] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:10:19,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124851928] [2022-11-18 21:10:19,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:19,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:10:19,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:10:19,491 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:10:19,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 21:10:19,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:19,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 21:10:19,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:10:20,014 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 21:10:20,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:10:20,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 21:10:20,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124851928] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:10:20,238 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:10:20,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-18 21:10:20,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844947751] [2022-11-18 21:10:20,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:10:20,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 21:10:20,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:20,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 21:10:20,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-18 21:10:20,250 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 364 [2022-11-18 21:10:20,257 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 322 transitions, 692 flow. Second operand has 15 states, 15 states have (on average 299.3333333333333) internal successors, (4490), 15 states have internal predecessors, (4490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:20,257 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:10:20,257 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 364 [2022-11-18 21:10:20,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:10:20,901 INFO L130 PetriNetUnfolder]: 6/364 cut-off events. [2022-11-18 21:10:20,901 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-18 21:10:20,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 364 events. 6/364 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 496 event pairs, 0 based on Foata normal form. 6/358 useless extension candidates. Maximal degree in co-relation 469. Up to 29 conditions per place. [2022-11-18 21:10:20,909 INFO L137 encePairwiseOnDemand]: 340/364 looper letters, 45 selfloop transitions, 33 changer transitions 0/352 dead transitions. [2022-11-18 21:10:20,909 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 352 transitions, 914 flow [2022-11-18 21:10:20,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 21:10:20,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 21:10:20,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3329 transitions. [2022-11-18 21:10:20,919 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8314185814185814 [2022-11-18 21:10:20,920 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3329 transitions. [2022-11-18 21:10:20,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3329 transitions. [2022-11-18 21:10:20,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:10:20,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3329 transitions. [2022-11-18 21:10:20,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 302.6363636363636) internal successors, (3329), 11 states have internal predecessors, (3329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:20,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 364.0) internal successors, (4368), 12 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:20,949 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 364.0) internal successors, (4368), 12 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:20,949 INFO L175 Difference]: Start difference. First operand has 323 places, 322 transitions, 692 flow. Second operand 11 states and 3329 transitions. [2022-11-18 21:10:20,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 352 transitions, 914 flow [2022-11-18 21:10:20,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 352 transitions, 896 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 21:10:20,961 INFO L231 Difference]: Finished difference. Result has 333 places, 340 transitions, 841 flow [2022-11-18 21:10:20,962 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=841, PETRI_PLACES=333, PETRI_TRANSITIONS=340} [2022-11-18 21:10:20,965 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 2 predicate places. [2022-11-18 21:10:20,966 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 340 transitions, 841 flow [2022-11-18 21:10:20,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 299.3333333333333) internal successors, (4490), 15 states have internal predecessors, (4490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:20,972 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:10:20,972 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:10:20,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 21:10:21,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-18 21:10:21,181 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 21:10:21,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:21,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1046059625, now seen corresponding path program 2 times [2022-11-18 21:10:21,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:21,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488801028] [2022-11-18 21:10:21,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:21,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:21,904 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-18 21:10:21,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:21,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488801028] [2022-11-18 21:10:21,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488801028] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:10:21,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495422590] [2022-11-18 21:10:21,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:10:21,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:10:21,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:10:21,912 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:10:21,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 21:10:22,157 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 21:10:22,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:10:22,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 21:10:22,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:10:22,400 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-18 21:10:22,403 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:10:22,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495422590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:10:22,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:10:22,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-11-18 21:10:22,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833773382] [2022-11-18 21:10:22,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:10:22,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:10:22,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:22,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:10:22,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:10:22,419 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 364 [2022-11-18 21:10:22,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 340 transitions, 841 flow. Second operand has 7 states, 7 states have (on average 309.2857142857143) internal successors, (2165), 7 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:22,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:10:22,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 364 [2022-11-18 21:10:22,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:10:24,131 INFO L130 PetriNetUnfolder]: 363/2263 cut-off events. [2022-11-18 21:10:24,132 INFO L131 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES. [2022-11-18 21:10:24,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3115 conditions, 2263 events. 363/2263 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 15924 event pairs, 160 based on Foata normal form. 0/2064 useless extension candidates. Maximal degree in co-relation 3107. Up to 326 conditions per place. [2022-11-18 21:10:24,182 INFO L137 encePairwiseOnDemand]: 354/364 looper letters, 96 selfloop transitions, 22 changer transitions 4/429 dead transitions. [2022-11-18 21:10:24,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 429 transitions, 1280 flow [2022-11-18 21:10:24,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 21:10:24,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 21:10:24,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3500 transitions. [2022-11-18 21:10:24,192 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8741258741258742 [2022-11-18 21:10:24,192 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3500 transitions. [2022-11-18 21:10:24,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3500 transitions. [2022-11-18 21:10:24,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:10:24,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3500 transitions. [2022-11-18 21:10:24,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 318.1818181818182) internal successors, (3500), 11 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:24,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 364.0) internal successors, (4368), 12 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:24,218 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 364.0) internal successors, (4368), 12 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:24,218 INFO L175 Difference]: Start difference. First operand has 333 places, 340 transitions, 841 flow. Second operand 11 states and 3500 transitions. [2022-11-18 21:10:24,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 429 transitions, 1280 flow [2022-11-18 21:10:24,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 429 transitions, 1255 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-11-18 21:10:24,233 INFO L231 Difference]: Finished difference. Result has 345 places, 358 transitions, 932 flow [2022-11-18 21:10:24,234 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=932, PETRI_PLACES=345, PETRI_TRANSITIONS=358} [2022-11-18 21:10:24,235 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 14 predicate places. [2022-11-18 21:10:24,236 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 358 transitions, 932 flow [2022-11-18 21:10:24,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 309.2857142857143) internal successors, (2165), 7 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:24,237 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:10:24,238 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:10:24,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 21:10:24,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:10:24,449 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 21:10:24,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:24,450 INFO L85 PathProgramCache]: Analyzing trace with hash 458989237, now seen corresponding path program 3 times [2022-11-18 21:10:24,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:24,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470628807] [2022-11-18 21:10:24,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:24,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:24,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:25,215 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-18 21:10:25,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:25,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470628807] [2022-11-18 21:10:25,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470628807] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:10:25,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663796201] [2022-11-18 21:10:25,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 21:10:25,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:10:25,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:10:25,220 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:10:25,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 21:10:25,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 21:10:25,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:10:25,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 21:10:25,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:10:25,837 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-18 21:10:25,837 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:10:25,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663796201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:10:25,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:10:25,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-11-18 21:10:25,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443666901] [2022-11-18 21:10:25,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:10:25,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:10:25,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:25,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:10:25,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:10:25,847 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 364 [2022-11-18 21:10:25,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 358 transitions, 932 flow. Second operand has 7 states, 7 states have (on average 309.2857142857143) internal successors, (2165), 7 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:25,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:10:25,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 364 [2022-11-18 21:10:25,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:10:27,944 INFO L130 PetriNetUnfolder]: 447/2637 cut-off events. [2022-11-18 21:10:27,944 INFO L131 PetriNetUnfolder]: For 467/562 co-relation queries the response was YES. [2022-11-18 21:10:28,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4053 conditions, 2637 events. 447/2637 cut-off events. For 467/562 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 19314 event pairs, 24 based on Foata normal form. 28/2567 useless extension candidates. Maximal degree in co-relation 4040. Up to 297 conditions per place. [2022-11-18 21:10:28,046 INFO L137 encePairwiseOnDemand]: 352/364 looper letters, 133 selfloop transitions, 48 changer transitions 0/488 dead transitions. [2022-11-18 21:10:28,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 488 transitions, 1738 flow [2022-11-18 21:10:28,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 21:10:28,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 21:10:28,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 5057 transitions. [2022-11-18 21:10:28,061 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8683035714285714 [2022-11-18 21:10:28,062 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 5057 transitions. [2022-11-18 21:10:28,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 5057 transitions. [2022-11-18 21:10:28,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:10:28,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 5057 transitions. [2022-11-18 21:10:28,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 316.0625) internal successors, (5057), 16 states have internal predecessors, (5057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:28,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 364.0) internal successors, (6188), 17 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:28,255 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 364.0) internal successors, (6188), 17 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:28,256 INFO L175 Difference]: Start difference. First operand has 345 places, 358 transitions, 932 flow. Second operand 16 states and 5057 transitions. [2022-11-18 21:10:28,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 488 transitions, 1738 flow [2022-11-18 21:10:28,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 488 transitions, 1738 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 21:10:28,285 INFO L231 Difference]: Finished difference. Result has 369 places, 398 transitions, 1286 flow [2022-11-18 21:10:28,286 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=932, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1286, PETRI_PLACES=369, PETRI_TRANSITIONS=398} [2022-11-18 21:10:28,289 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 38 predicate places. [2022-11-18 21:10:28,290 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 398 transitions, 1286 flow [2022-11-18 21:10:28,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 309.2857142857143) internal successors, (2165), 7 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:28,292 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:10:28,292 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:10:28,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 21:10:28,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:10:28,501 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 21:10:28,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:28,502 INFO L85 PathProgramCache]: Analyzing trace with hash 729640987, now seen corresponding path program 4 times [2022-11-18 21:10:28,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:28,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414872371] [2022-11-18 21:10:28,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:28,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:28,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:29,072 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-18 21:10:29,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:29,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414872371] [2022-11-18 21:10:29,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414872371] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:10:29,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520798987] [2022-11-18 21:10:29,074 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 21:10:29,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:10:29,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:10:29,076 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:10:29,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 21:10:29,351 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 21:10:29,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:10:29,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 21:10:29,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:10:29,673 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-18 21:10:29,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:10:29,914 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-18 21:10:29,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520798987] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:10:29,915 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:10:29,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-18 21:10:29,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790719393] [2022-11-18 21:10:29,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:10:29,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 21:10:29,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:29,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 21:10:29,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-18 21:10:29,935 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 364 [2022-11-18 21:10:29,945 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 398 transitions, 1286 flow. Second operand has 22 states, 22 states have (on average 298.8636363636364) internal successors, (6575), 22 states have internal predecessors, (6575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:29,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:10:29,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 364 [2022-11-18 21:10:29,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:10:31,447 INFO L130 PetriNetUnfolder]: 69/1078 cut-off events. [2022-11-18 21:10:31,450 INFO L131 PetriNetUnfolder]: For 358/376 co-relation queries the response was YES. [2022-11-18 21:10:31,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1688 conditions, 1078 events. 69/1078 cut-off events. For 358/376 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5055 event pairs, 3 based on Foata normal form. 11/1058 useless extension candidates. Maximal degree in co-relation 1665. Up to 39 conditions per place. [2022-11-18 21:10:31,477 INFO L137 encePairwiseOnDemand]: 340/364 looper letters, 57 selfloop transitions, 51 changer transitions 0/440 dead transitions. [2022-11-18 21:10:31,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 440 transitions, 1670 flow [2022-11-18 21:10:31,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 21:10:31,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 21:10:31,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 5129 transitions. [2022-11-18 21:10:31,498 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8288623141564319 [2022-11-18 21:10:31,498 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 5129 transitions. [2022-11-18 21:10:31,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 5129 transitions. [2022-11-18 21:10:31,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:10:31,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 5129 transitions. [2022-11-18 21:10:31,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 301.70588235294116) internal successors, (5129), 17 states have internal predecessors, (5129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:31,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 364.0) internal successors, (6552), 18 states have internal predecessors, (6552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:31,542 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 364.0) internal successors, (6552), 18 states have internal predecessors, (6552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:31,542 INFO L175 Difference]: Start difference. First operand has 369 places, 398 transitions, 1286 flow. Second operand 17 states and 5129 transitions. [2022-11-18 21:10:31,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 440 transitions, 1670 flow [2022-11-18 21:10:31,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 440 transitions, 1656 flow, removed 7 selfloop flow, removed 0 redundant places. [2022-11-18 21:10:31,565 INFO L231 Difference]: Finished difference. Result has 388 places, 419 transitions, 1535 flow [2022-11-18 21:10:31,567 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1535, PETRI_PLACES=388, PETRI_TRANSITIONS=419} [2022-11-18 21:10:31,571 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 57 predicate places. [2022-11-18 21:10:31,571 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 419 transitions, 1535 flow [2022-11-18 21:10:31,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 298.8636363636364) internal successors, (6575), 22 states have internal predecessors, (6575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:31,575 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:10:31,576 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:10:31,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 21:10:31,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 21:10:31,785 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 21:10:31,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:31,785 INFO L85 PathProgramCache]: Analyzing trace with hash 45934657, now seen corresponding path program 5 times [2022-11-18 21:10:31,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:31,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869528364] [2022-11-18 21:10:31,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:31,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:31,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:32,848 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-18 21:10:32,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:32,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869528364] [2022-11-18 21:10:32,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869528364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:10:32,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:10:32,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:10:32,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811677639] [2022-11-18 21:10:32,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:10:32,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:10:32,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:32,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:10:32,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:10:32,863 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 364 [2022-11-18 21:10:32,866 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 419 transitions, 1535 flow. Second operand has 7 states, 7 states have (on average 309.2857142857143) internal successors, (2165), 7 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:32,866 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:10:32,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 364 [2022-11-18 21:10:32,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:10:35,314 INFO L130 PetriNetUnfolder]: 630/4136 cut-off events. [2022-11-18 21:10:35,315 INFO L131 PetriNetUnfolder]: For 2820/3242 co-relation queries the response was YES. [2022-11-18 21:10:35,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7116 conditions, 4136 events. 630/4136 cut-off events. For 2820/3242 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 35303 event pairs, 131 based on Foata normal form. 139/4082 useless extension candidates. Maximal degree in co-relation 7089. Up to 579 conditions per place. [2022-11-18 21:10:35,488 INFO L137 encePairwiseOnDemand]: 348/364 looper letters, 131 selfloop transitions, 83 changer transitions 3/545 dead transitions. [2022-11-18 21:10:35,488 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 545 transitions, 2593 flow [2022-11-18 21:10:35,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 21:10:35,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 21:10:35,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 4123 transitions. [2022-11-18 21:10:35,514 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.871301775147929 [2022-11-18 21:10:35,514 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 4123 transitions. [2022-11-18 21:10:35,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 4123 transitions. [2022-11-18 21:10:35,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:10:35,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 4123 transitions. [2022-11-18 21:10:35,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 317.15384615384613) internal successors, (4123), 13 states have internal predecessors, (4123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:35,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 364.0) internal successors, (5096), 14 states have internal predecessors, (5096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:35,559 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 364.0) internal successors, (5096), 14 states have internal predecessors, (5096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:35,560 INFO L175 Difference]: Start difference. First operand has 388 places, 419 transitions, 1535 flow. Second operand 13 states and 4123 transitions. [2022-11-18 21:10:35,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 545 transitions, 2593 flow [2022-11-18 21:10:35,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 545 transitions, 2526 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-11-18 21:10:35,593 INFO L231 Difference]: Finished difference. Result has 402 places, 473 transitions, 2181 flow [2022-11-18 21:10:35,595 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=1468, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2181, PETRI_PLACES=402, PETRI_TRANSITIONS=473} [2022-11-18 21:10:35,596 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 71 predicate places. [2022-11-18 21:10:35,596 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 473 transitions, 2181 flow [2022-11-18 21:10:35,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 309.2857142857143) internal successors, (2165), 7 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:35,598 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:10:35,598 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:10:35,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 21:10:35,599 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 21:10:35,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:35,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1344731889, now seen corresponding path program 6 times [2022-11-18 21:10:35,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:35,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721162523] [2022-11-18 21:10:35,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:35,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:36,593 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-18 21:10:36,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:36,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721162523] [2022-11-18 21:10:36,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721162523] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:10:36,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:10:36,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:10:36,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614547195] [2022-11-18 21:10:36,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:10:36,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:10:36,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:36,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:10:36,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:10:36,607 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 364 [2022-11-18 21:10:36,610 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 473 transitions, 2181 flow. Second operand has 7 states, 7 states have (on average 309.2857142857143) internal successors, (2165), 7 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:36,610 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:10:36,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 364 [2022-11-18 21:10:36,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:10:40,328 INFO L130 PetriNetUnfolder]: 778/5314 cut-off events. [2022-11-18 21:10:40,329 INFO L131 PetriNetUnfolder]: For 6791/7767 co-relation queries the response was YES. [2022-11-18 21:10:40,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9950 conditions, 5314 events. 778/5314 cut-off events. For 6791/7767 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 49546 event pairs, 270 based on Foata normal form. 238/5299 useless extension candidates. Maximal degree in co-relation 9913. Up to 551 conditions per place. [2022-11-18 21:10:40,535 INFO L137 encePairwiseOnDemand]: 353/364 looper letters, 199 selfloop transitions, 92 changer transitions 2/621 dead transitions. [2022-11-18 21:10:40,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 621 transitions, 3709 flow [2022-11-18 21:10:40,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 21:10:40,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 21:10:40,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3205 transitions. [2022-11-18 21:10:40,545 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8804945054945055 [2022-11-18 21:10:40,545 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3205 transitions. [2022-11-18 21:10:40,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3205 transitions. [2022-11-18 21:10:40,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:10:40,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3205 transitions. [2022-11-18 21:10:40,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 320.5) internal successors, (3205), 10 states have internal predecessors, (3205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:40,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 364.0) internal successors, (4004), 11 states have internal predecessors, (4004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:40,569 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 364.0) internal successors, (4004), 11 states have internal predecessors, (4004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:40,569 INFO L175 Difference]: Start difference. First operand has 402 places, 473 transitions, 2181 flow. Second operand 10 states and 3205 transitions. [2022-11-18 21:10:40,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 621 transitions, 3709 flow [2022-11-18 21:10:40,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 621 transitions, 3657 flow, removed 26 selfloop flow, removed 0 redundant places. [2022-11-18 21:10:40,618 INFO L231 Difference]: Finished difference. Result has 416 places, 508 transitions, 2796 flow [2022-11-18 21:10:40,619 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=2149, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2796, PETRI_PLACES=416, PETRI_TRANSITIONS=508} [2022-11-18 21:10:40,620 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 85 predicate places. [2022-11-18 21:10:40,620 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 508 transitions, 2796 flow [2022-11-18 21:10:40,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 309.2857142857143) internal successors, (2165), 7 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:40,623 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:10:40,624 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:10:40,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 21:10:40,625 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 21:10:40,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:40,626 INFO L85 PathProgramCache]: Analyzing trace with hash -64768181, now seen corresponding path program 7 times [2022-11-18 21:10:40,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:40,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951058339] [2022-11-18 21:10:40,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:40,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:40,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:41,486 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-18 21:10:41,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:41,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951058339] [2022-11-18 21:10:41,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951058339] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:10:41,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:10:41,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:10:41,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018792454] [2022-11-18 21:10:41,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:10:41,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:10:41,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:41,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:10:41,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:10:41,495 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 364 [2022-11-18 21:10:41,499 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 508 transitions, 2796 flow. Second operand has 7 states, 7 states have (on average 309.2857142857143) internal successors, (2165), 7 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:41,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:10:41,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 364 [2022-11-18 21:10:41,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:10:45,115 INFO L130 PetriNetUnfolder]: 925/6434 cut-off events. [2022-11-18 21:10:45,116 INFO L131 PetriNetUnfolder]: For 10881/12003 co-relation queries the response was YES. [2022-11-18 21:10:45,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12624 conditions, 6434 events. 925/6434 cut-off events. For 10881/12003 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 64297 event pairs, 347 based on Foata normal form. 137/6265 useless extension candidates. Maximal degree in co-relation 12581. Up to 758 conditions per place. [2022-11-18 21:10:45,339 INFO L137 encePairwiseOnDemand]: 353/364 looper letters, 202 selfloop transitions, 120 changer transitions 2/652 dead transitions. [2022-11-18 21:10:45,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 652 transitions, 4435 flow [2022-11-18 21:10:45,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 21:10:45,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 21:10:45,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3215 transitions. [2022-11-18 21:10:45,352 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8832417582417582 [2022-11-18 21:10:45,352 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3215 transitions. [2022-11-18 21:10:45,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3215 transitions. [2022-11-18 21:10:45,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:10:45,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3215 transitions. [2022-11-18 21:10:45,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 321.5) internal successors, (3215), 10 states have internal predecessors, (3215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:45,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 364.0) internal successors, (4004), 11 states have internal predecessors, (4004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:45,380 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 364.0) internal successors, (4004), 11 states have internal predecessors, (4004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:45,381 INFO L175 Difference]: Start difference. First operand has 416 places, 508 transitions, 2796 flow. Second operand 10 states and 3215 transitions. [2022-11-18 21:10:45,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 652 transitions, 4435 flow [2022-11-18 21:10:45,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 652 transitions, 4325 flow, removed 10 selfloop flow, removed 2 redundant places. [2022-11-18 21:10:45,459 INFO L231 Difference]: Finished difference. Result has 429 places, 546 transitions, 3566 flow [2022-11-18 21:10:45,461 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=2709, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3566, PETRI_PLACES=429, PETRI_TRANSITIONS=546} [2022-11-18 21:10:45,462 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 98 predicate places. [2022-11-18 21:10:45,462 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 546 transitions, 3566 flow [2022-11-18 21:10:45,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 309.2857142857143) internal successors, (2165), 7 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:45,464 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:10:45,464 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:10:45,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 21:10:45,465 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 21:10:45,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:45,466 INFO L85 PathProgramCache]: Analyzing trace with hash -633694079, now seen corresponding path program 8 times [2022-11-18 21:10:45,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:45,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952230634] [2022-11-18 21:10:45,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:45,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:45,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:46,277 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-18 21:10:46,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:46,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952230634] [2022-11-18 21:10:46,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952230634] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:10:46,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:10:46,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:10:46,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467973417] [2022-11-18 21:10:46,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:10:46,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:10:46,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:46,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:10:46,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:10:46,285 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 364 [2022-11-18 21:10:46,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 546 transitions, 3566 flow. Second operand has 7 states, 7 states have (on average 287.2857142857143) internal successors, (2011), 7 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:46,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:10:46,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 364 [2022-11-18 21:10:46,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:10:48,225 INFO L130 PetriNetUnfolder]: 243/3402 cut-off events. [2022-11-18 21:10:48,225 INFO L131 PetriNetUnfolder]: For 6938/7182 co-relation queries the response was YES. [2022-11-18 21:10:48,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6498 conditions, 3402 events. 243/3402 cut-off events. For 6938/7182 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 28914 event pairs, 27 based on Foata normal form. 98/3341 useless extension candidates. Maximal degree in co-relation 6450. Up to 328 conditions per place. [2022-11-18 21:10:48,327 INFO L137 encePairwiseOnDemand]: 357/364 looper letters, 162 selfloop transitions, 18 changer transitions 4/563 dead transitions. [2022-11-18 21:10:48,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 563 transitions, 3987 flow [2022-11-18 21:10:48,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:10:48,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 21:10:48,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2037 transitions. [2022-11-18 21:10:48,333 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7994505494505495 [2022-11-18 21:10:48,334 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2037 transitions. [2022-11-18 21:10:48,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2037 transitions. [2022-11-18 21:10:48,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:10:48,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2037 transitions. [2022-11-18 21:10:48,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 291.0) internal successors, (2037), 7 states have internal predecessors, (2037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:48,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 364.0) internal successors, (2912), 8 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:48,348 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 364.0) internal successors, (2912), 8 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:48,349 INFO L175 Difference]: Start difference. First operand has 429 places, 546 transitions, 3566 flow. Second operand 7 states and 2037 transitions. [2022-11-18 21:10:48,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 563 transitions, 3987 flow [2022-11-18 21:10:48,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 563 transitions, 3927 flow, removed 30 selfloop flow, removed 0 redundant places. [2022-11-18 21:10:48,409 INFO L231 Difference]: Finished difference. Result has 439 places, 547 transitions, 3573 flow [2022-11-18 21:10:48,410 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=3506, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3573, PETRI_PLACES=439, PETRI_TRANSITIONS=547} [2022-11-18 21:10:48,411 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 108 predicate places. [2022-11-18 21:10:48,411 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 547 transitions, 3573 flow [2022-11-18 21:10:48,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 287.2857142857143) internal successors, (2011), 7 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:48,413 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:10:48,413 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:10:48,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 21:10:48,414 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 21:10:48,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:48,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1802641237, now seen corresponding path program 1 times [2022-11-18 21:10:48,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:48,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572720588] [2022-11-18 21:10:48,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:48,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:48,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:50,026 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-18 21:10:50,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:50,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572720588] [2022-11-18 21:10:50,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572720588] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:10:50,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876249888] [2022-11-18 21:10:50,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:50,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:10:50,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:10:50,035 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:10:50,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 21:10:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:50,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 21:10:50,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:10:50,873 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-11-18 21:10:50,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:10:50,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876249888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:10:50,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:10:50,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 16 [2022-11-18 21:10:50,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632900269] [2022-11-18 21:10:50,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:10:50,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 21:10:50,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:50,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 21:10:50,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:10:50,881 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 364 [2022-11-18 21:10:50,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 547 transitions, 3573 flow. Second operand has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:10:50,885 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:10:50,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 364 [2022-11-18 21:10:50,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:11:16,974 INFO L130 PetriNetUnfolder]: 11001/56502 cut-off events. [2022-11-18 21:11:16,975 INFO L131 PetriNetUnfolder]: For 55388/58099 co-relation queries the response was YES. [2022-11-18 21:11:18,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97114 conditions, 56502 events. 11001/56502 cut-off events. For 55388/58099 co-relation queries the response was YES. Maximal size of possible extension queue 1127. Compared 807900 event pairs, 4224 based on Foata normal form. 603/52564 useless extension candidates. Maximal degree in co-relation 97061. Up to 8768 conditions per place. [2022-11-18 21:11:18,391 INFO L137 encePairwiseOnDemand]: 353/364 looper letters, 153 selfloop transitions, 25 changer transitions 12/670 dead transitions. [2022-11-18 21:11:18,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 670 transitions, 4246 flow [2022-11-18 21:11:18,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 21:11:18,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 21:11:18,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4473 transitions. [2022-11-18 21:11:18,400 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7680288461538461 [2022-11-18 21:11:18,401 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4473 transitions. [2022-11-18 21:11:18,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4473 transitions. [2022-11-18 21:11:18,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:11:18,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4473 transitions. [2022-11-18 21:11:18,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 279.5625) internal successors, (4473), 16 states have internal predecessors, (4473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:11:18,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 364.0) internal successors, (6188), 17 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:11:18,430 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 364.0) internal successors, (6188), 17 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:11:18,431 INFO L175 Difference]: Start difference. First operand has 439 places, 547 transitions, 3573 flow. Second operand 16 states and 4473 transitions. [2022-11-18 21:11:18,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 670 transitions, 4246 flow [2022-11-18 21:11:19,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 670 transitions, 4214 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-11-18 21:11:19,049 INFO L231 Difference]: Finished difference. Result has 457 places, 568 transitions, 3684 flow [2022-11-18 21:11:19,051 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=3549, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3684, PETRI_PLACES=457, PETRI_TRANSITIONS=568} [2022-11-18 21:11:19,052 INFO L288 CegarLoopForPetriNet]: 331 programPoint places, 126 predicate places. [2022-11-18 21:11:19,052 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 568 transitions, 3684 flow [2022-11-18 21:11:19,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:11:19,054 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:11:19,054 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:11:19,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 21:11:19,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 21:11:19,259 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 21:11:19,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:11:19,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1568314935, now seen corresponding path program 2 times [2022-11-18 21:11:19,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:11:19,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063386862] [2022-11-18 21:11:19,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:11:19,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:11:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:20,764 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-18 21:11:20,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:11:20,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063386862] [2022-11-18 21:11:20,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063386862] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:11:20,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091893762] [2022-11-18 21:11:20,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:11:20,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:11:20,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:11:20,768 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:11:20,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2d8a04-7f24-4ac7-b07f-89150373d62c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 21:11:21,024 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 21:11:21,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:11:21,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 21:11:21,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:11:21,389 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-11-18 21:11:21,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:11:21,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091893762] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:11:21,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:11:21,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 16 [2022-11-18 21:11:21,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494394527] [2022-11-18 21:11:21,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:11:21,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 21:11:21,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:11:21,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 21:11:21,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:11:21,397 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 364 [2022-11-18 21:11:21,400 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 568 transitions, 3684 flow. Second operand has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:11:21,400 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:11:21,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 364 [2022-11-18 21:11:21,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand