./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN --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 795c382fbb0026f2f6f7212254176553809c7311a8058a10cea47f6b1b03373b --- 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-6b4ec56 [2022-11-20 12:08:02,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:08:02,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:08:02,659 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:08:02,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:08:02,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:08:02,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:08:02,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:08:02,665 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:08:02,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:08:02,667 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:08:02,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:08:02,668 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:08:02,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:08:02,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:08:02,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:08:02,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:08:02,674 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:08:02,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:08:02,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:08:02,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:08:02,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:08:02,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:08:02,689 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:08:02,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:08:02,693 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:08:02,694 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:08:02,695 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:08:02,695 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:08:02,696 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:08:02,696 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:08:02,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:08:02,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:08:02,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:08:02,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:08:02,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:08:02,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:08:02,701 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:08:02,701 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:08:02,702 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:08:02,708 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:08:02,710 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 12:08:02,748 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:08:02,748 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:08:02,749 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:08:02,749 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:08:02,750 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:08:02,750 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:08:02,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:08:02,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:08:02,751 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:08:02,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:08:02,752 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:08:02,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:08:02,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:08:02,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:08:02,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:08:02,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:08:02,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:08:02,754 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:08:02,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:08:02,754 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:08:02,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:08:02,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:08:02,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:08:02,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:08:02,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:08:02,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:08:02,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:08:02,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:08:02,756 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:08:02,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:08:02,757 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:08:02,757 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:08:02,757 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:08:02,757 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_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 795c382fbb0026f2f6f7212254176553809c7311a8058a10cea47f6b1b03373b [2022-11-20 12:08:03,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:08:03,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:08:03,047 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:08:03,049 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:08:03,049 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:08:03,051 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c [2022-11-20 12:08:06,276 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:08:06,542 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:08:06,543 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c [2022-11-20 12:08:06,552 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/data/9c7e2437c/94d9be35c2454bb38e0175826d40b166/FLAGe034b44ce [2022-11-20 12:08:06,570 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/data/9c7e2437c/94d9be35c2454bb38e0175826d40b166 [2022-11-20 12:08:06,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:08:06,580 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:08:06,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:08:06,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:08:06,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:08:06,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:08:06" (1/1) ... [2022-11-20 12:08:06,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@794d42ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:08:06, skipping insertion in model container [2022-11-20 12:08:06,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:08:06" (1/1) ... [2022-11-20 12:08:06,597 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:08:06,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:08:06,811 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c[3034,3047] [2022-11-20 12:08:06,823 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:08:06,834 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:08:06,873 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c[3034,3047] [2022-11-20 12:08:06,886 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:08:06,909 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:08:06,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:08:06 WrapperNode [2022-11-20 12:08:06,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:08:06,912 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:08:06,912 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:08:06,912 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:08:06,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:08:06" (1/1) ... [2022-11-20 12:08:06,946 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:08:06" (1/1) ... [2022-11-20 12:08:06,995 INFO L138 Inliner]: procedures = 26, calls = 46, calls flagged for inlining = 16, calls inlined = 24, statements flattened = 271 [2022-11-20 12:08:06,996 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:08:06,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:08:06,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:08:06,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:08:07,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:08:06" (1/1) ... [2022-11-20 12:08:07,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:08:06" (1/1) ... [2022-11-20 12:08:07,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:08:06" (1/1) ... [2022-11-20 12:08:07,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:08:06" (1/1) ... [2022-11-20 12:08:07,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:08:06" (1/1) ... [2022-11-20 12:08:07,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:08:06" (1/1) ... [2022-11-20 12:08:07,064 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:08:06" (1/1) ... [2022-11-20 12:08:07,066 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:08:06" (1/1) ... [2022-11-20 12:08:07,069 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:08:07,070 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:08:07,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:08:07,070 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:08:07,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:08:06" (1/1) ... [2022-11-20 12:08:07,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:08:07,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:08:07,116 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:08:07,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:08:07,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:08:07,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:08:07,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:08:07,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:08:07,165 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 12:08:07,165 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 12:08:07,165 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 12:08:07,165 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 12:08:07,166 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 12:08:07,166 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 12:08:07,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:08:07,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:08:07,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:08:07,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:08:07,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:08:07,168 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:08:07,352 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:08:07,354 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:08:07,870 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:08:07,883 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:08:07,883 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-20 12:08:07,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:08:07 BoogieIcfgContainer [2022-11-20 12:08:07,894 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:08:07,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:08:07,898 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:08:07,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:08:07,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:08:06" (1/3) ... [2022-11-20 12:08:07,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67416a48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:08:07, skipping insertion in model container [2022-11-20 12:08:07,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:08:06" (2/3) ... [2022-11-20 12:08:07,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67416a48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:08:07, skipping insertion in model container [2022-11-20 12:08:07,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:08:07" (3/3) ... [2022-11-20 12:08:07,908 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-trans.wvr.c [2022-11-20 12:08:07,918 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:08:07,948 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:08:07,949 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:08:07,949 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:08:08,168 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 12:08:08,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 338 places, 356 transitions, 736 flow [2022-11-20 12:08:08,543 INFO L130 PetriNetUnfolder]: 28/353 cut-off events. [2022-11-20 12:08:08,544 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 12:08:08,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 366 conditions, 353 events. 28/353 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 564 event pairs, 0 based on Foata normal form. 0/324 useless extension candidates. Maximal degree in co-relation 272. Up to 2 conditions per place. [2022-11-20 12:08:08,557 INFO L82 GeneralOperation]: Start removeDead. Operand has 338 places, 356 transitions, 736 flow [2022-11-20 12:08:08,575 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 324 places, 342 transitions, 702 flow [2022-11-20 12:08:08,598 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:08:08,607 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;@1399cc9b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:08:08,608 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-20 12:08:08,718 INFO L130 PetriNetUnfolder]: 28/341 cut-off events. [2022-11-20 12:08:08,719 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 12:08:08,719 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:08:08,720 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] [2022-11-20 12:08:08,721 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)] === [2022-11-20 12:08:08,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:08:08,729 INFO L85 PathProgramCache]: Analyzing trace with hash -120224116, now seen corresponding path program 1 times [2022-11-20 12:08:08,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:08:08,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481706748] [2022-11-20 12:08:08,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:08,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:08:08,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:09,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:08:09,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:08:09,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481706748] [2022-11-20 12:08:09,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481706748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:08:09,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:08:09,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:08:09,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367219003] [2022-11-20 12:08:09,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:08:09,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 12:08:09,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:08:09,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 12:08:09,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:08:09,255 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 356 [2022-11-20 12:08:09,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 342 transitions, 702 flow. Second operand has 2 states, 2 states have (on average 333.0) internal successors, (666), 2 states have internal predecessors, (666), 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) [2022-11-20 12:08:09,264 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:08:09,264 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 356 [2022-11-20 12:08:09,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:08:09,356 INFO L130 PetriNetUnfolder]: 6/320 cut-off events. [2022-11-20 12:08:09,356 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-11-20 12:08:09,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340 conditions, 320 events. 6/320 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 539 event pairs, 0 based on Foata normal form. 34/332 useless extension candidates. Maximal degree in co-relation 257. Up to 7 conditions per place. [2022-11-20 12:08:09,362 INFO L137 encePairwiseOnDemand]: 334/356 looper letters, 6 selfloop transitions, 0 changer transitions 7/320 dead transitions. [2022-11-20 12:08:09,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 320 transitions, 670 flow [2022-11-20 12:08:09,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 12:08:09,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 12:08:09,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 682 transitions. [2022-11-20 12:08:09,379 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9578651685393258 [2022-11-20 12:08:09,380 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 682 transitions. [2022-11-20 12:08:09,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 682 transitions. [2022-11-20 12:08:09,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:08:09,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 682 transitions. [2022-11-20 12:08:09,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 341.0) internal successors, (682), 2 states have internal predecessors, (682), 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) [2022-11-20 12:08:09,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 356.0) internal successors, (1068), 3 states have internal predecessors, (1068), 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) [2022-11-20 12:08:09,401 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 356.0) internal successors, (1068), 3 states have internal predecessors, (1068), 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) [2022-11-20 12:08:09,403 INFO L175 Difference]: Start difference. First operand has 324 places, 342 transitions, 702 flow. Second operand 2 states and 682 transitions. [2022-11-20 12:08:09,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 320 transitions, 670 flow [2022-11-20 12:08:09,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 320 transitions, 658 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 12:08:09,415 INFO L231 Difference]: Finished difference. Result has 319 places, 313 transitions, 632 flow [2022-11-20 12:08:09,418 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=632, PETRI_PLACES=319, PETRI_TRANSITIONS=313} [2022-11-20 12:08:09,422 INFO L288 CegarLoopForPetriNet]: 324 programPoint places, -5 predicate places. [2022-11-20 12:08:09,422 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 313 transitions, 632 flow [2022-11-20 12:08:09,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 333.0) internal successors, (666), 2 states have internal predecessors, (666), 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) [2022-11-20 12:08:09,424 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:08:09,424 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] [2022-11-20 12:08:09,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:08:09,425 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)] === [2022-11-20 12:08:09,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:08:09,425 INFO L85 PathProgramCache]: Analyzing trace with hash -618738814, now seen corresponding path program 1 times [2022-11-20 12:08:09,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:08:09,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628496162] [2022-11-20 12:08:09,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:09,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:08:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:09,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:08:09,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:08:09,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628496162] [2022-11-20 12:08:09,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628496162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:08:09,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:08:09,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:08:09,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964645493] [2022-11-20 12:08:09,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:08:09,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:08:09,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:08:09,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:08:09,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:08:09,987 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 356 [2022-11-20 12:08:09,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 313 transitions, 632 flow. Second operand has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 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) [2022-11-20 12:08:09,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:08:09,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 356 [2022-11-20 12:08:09,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:08:10,241 INFO L130 PetriNetUnfolder]: 6/331 cut-off events. [2022-11-20 12:08:10,242 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 12:08:10,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 331 events. 6/331 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. 0/316 useless extension candidates. Maximal degree in co-relation 388. Up to 38 conditions per place. [2022-11-20 12:08:10,248 INFO L137 encePairwiseOnDemand]: 341/356 looper letters, 42 selfloop transitions, 12 changer transitions 0/325 dead transitions. [2022-11-20 12:08:10,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 325 transitions, 764 flow [2022-11-20 12:08:10,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:08:10,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:08:10,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1512 transitions. [2022-11-20 12:08:10,254 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.849438202247191 [2022-11-20 12:08:10,255 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1512 transitions. [2022-11-20 12:08:10,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1512 transitions. [2022-11-20 12:08:10,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:08:10,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1512 transitions. [2022-11-20 12:08:10,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 302.4) internal successors, (1512), 5 states have internal predecessors, (1512), 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) [2022-11-20 12:08:10,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 356.0) internal successors, (2136), 6 states have internal predecessors, (2136), 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) [2022-11-20 12:08:10,268 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 356.0) internal successors, (2136), 6 states have internal predecessors, (2136), 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) [2022-11-20 12:08:10,268 INFO L175 Difference]: Start difference. First operand has 319 places, 313 transitions, 632 flow. Second operand 5 states and 1512 transitions. [2022-11-20 12:08:10,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 325 transitions, 764 flow [2022-11-20 12:08:10,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 325 transitions, 764 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:08:10,277 INFO L231 Difference]: Finished difference. Result has 317 places, 316 transitions, 680 flow [2022-11-20 12:08:10,278 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=680, PETRI_PLACES=317, PETRI_TRANSITIONS=316} [2022-11-20 12:08:10,280 INFO L288 CegarLoopForPetriNet]: 324 programPoint places, -7 predicate places. [2022-11-20 12:08:10,280 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 316 transitions, 680 flow [2022-11-20 12:08:10,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 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) [2022-11-20 12:08:10,282 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:08:10,283 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] [2022-11-20 12:08:10,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:08:10,283 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)] === [2022-11-20 12:08:10,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:08:10,284 INFO L85 PathProgramCache]: Analyzing trace with hash -14909429, now seen corresponding path program 1 times [2022-11-20 12:08:10,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:08:10,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211198682] [2022-11-20 12:08:10,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:10,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:08:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:10,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:08:10,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:08:10,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211198682] [2022-11-20 12:08:10,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211198682] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:08:10,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178809814] [2022-11-20 12:08:10,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:10,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:08:10,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:08:10,695 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:08:10,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:08:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:10,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:08:10,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:08:11,134 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:08:11,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:08:11,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:08:11,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178809814] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:08:11,270 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:08:11,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-20 12:08:11,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254082066] [2022-11-20 12:08:11,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:08:11,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 12:08:11,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:08:11,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 12:08:11,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:08:11,281 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 356 [2022-11-20 12:08:11,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 316 transitions, 680 flow. Second operand has 15 states, 15 states have (on average 292.3333333333333) internal successors, (4385), 15 states have internal predecessors, (4385), 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) [2022-11-20 12:08:11,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:08:11,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 356 [2022-11-20 12:08:11,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:08:11,741 INFO L130 PetriNetUnfolder]: 6/358 cut-off events. [2022-11-20 12:08:11,741 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-20 12:08:11,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 468 conditions, 358 events. 6/358 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. 6/352 useless extension candidates. Maximal degree in co-relation 463. Up to 29 conditions per place. [2022-11-20 12:08:11,745 INFO L137 encePairwiseOnDemand]: 332/356 looper letters, 45 selfloop transitions, 33 changer transitions 0/346 dead transitions. [2022-11-20 12:08:11,745 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 346 transitions, 902 flow [2022-11-20 12:08:11,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:08:11,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:08:11,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3252 transitions. [2022-11-20 12:08:11,752 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8304392236976507 [2022-11-20 12:08:11,753 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3252 transitions. [2022-11-20 12:08:11,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3252 transitions. [2022-11-20 12:08:11,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:08:11,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3252 transitions. [2022-11-20 12:08:11,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 295.6363636363636) internal successors, (3252), 11 states have internal predecessors, (3252), 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) [2022-11-20 12:08:11,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 356.0) internal successors, (4272), 12 states have internal predecessors, (4272), 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) [2022-11-20 12:08:11,774 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 356.0) internal successors, (4272), 12 states have internal predecessors, (4272), 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) [2022-11-20 12:08:11,774 INFO L175 Difference]: Start difference. First operand has 317 places, 316 transitions, 680 flow. Second operand 11 states and 3252 transitions. [2022-11-20 12:08:11,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 346 transitions, 902 flow [2022-11-20 12:08:11,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 346 transitions, 884 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:08:11,783 INFO L231 Difference]: Finished difference. Result has 327 places, 334 transitions, 829 flow [2022-11-20 12:08:11,784 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=829, PETRI_PLACES=327, PETRI_TRANSITIONS=334} [2022-11-20 12:08:11,785 INFO L288 CegarLoopForPetriNet]: 324 programPoint places, 3 predicate places. [2022-11-20 12:08:11,785 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 334 transitions, 829 flow [2022-11-20 12:08:11,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 292.3333333333333) internal successors, (4385), 15 states have internal predecessors, (4385), 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) [2022-11-20 12:08:11,788 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:08:11,789 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] [2022-11-20 12:08:11,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:08:11,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:08:11,996 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)] === [2022-11-20 12:08:11,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:08:11,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1007421789, now seen corresponding path program 2 times [2022-11-20 12:08:11,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:08:11,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354027660] [2022-11-20 12:08:11,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:11,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:08:12,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:12,526 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-20 12:08:12,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:08:12,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354027660] [2022-11-20 12:08:12,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354027660] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:08:12,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593645002] [2022-11-20 12:08:12,528 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:08:12,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:08:12,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:08:12,529 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:08:12,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:08:12,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:08:12,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:08:12,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:08:12,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:08:12,904 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-20 12:08:12,904 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:08:12,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593645002] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:08:12,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:08:12,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-11-20 12:08:12,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578227957] [2022-11-20 12:08:12,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:08:12,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:08:12,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:08:12,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:08:12,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:08:12,920 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 356 [2022-11-20 12:08:12,924 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 334 transitions, 829 flow. Second operand has 7 states, 7 states have (on average 302.2857142857143) internal successors, (2116), 7 states have internal predecessors, (2116), 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) [2022-11-20 12:08:12,924 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:08:12,924 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 356 [2022-11-20 12:08:12,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:08:14,590 INFO L130 PetriNetUnfolder]: 744/3344 cut-off events. [2022-11-20 12:08:14,591 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2022-11-20 12:08:14,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4957 conditions, 3344 events. 744/3344 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 27549 event pairs, 14 based on Foata normal form. 0/3072 useless extension candidates. Maximal degree in co-relation 4949. Up to 420 conditions per place. [2022-11-20 12:08:14,634 INFO L137 encePairwiseOnDemand]: 344/356 looper letters, 116 selfloop transitions, 35 changer transitions 0/452 dead transitions. [2022-11-20 12:08:14,634 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 452 transitions, 1389 flow [2022-11-20 12:08:14,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 12:08:14,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-20 12:08:14,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4954 transitions. [2022-11-20 12:08:14,645 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8697331460674157 [2022-11-20 12:08:14,645 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4954 transitions. [2022-11-20 12:08:14,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4954 transitions. [2022-11-20 12:08:14,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:08:14,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4954 transitions. [2022-11-20 12:08:14,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 309.625) internal successors, (4954), 16 states have internal predecessors, (4954), 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) [2022-11-20 12:08:14,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 356.0) internal successors, (6052), 17 states have internal predecessors, (6052), 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) [2022-11-20 12:08:14,672 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 356.0) internal successors, (6052), 17 states have internal predecessors, (6052), 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) [2022-11-20 12:08:14,672 INFO L175 Difference]: Start difference. First operand has 327 places, 334 transitions, 829 flow. Second operand 16 states and 4954 transitions. [2022-11-20 12:08:14,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 452 transitions, 1389 flow [2022-11-20 12:08:14,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 452 transitions, 1364 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-11-20 12:08:14,683 INFO L231 Difference]: Finished difference. Result has 348 places, 365 transitions, 1018 flow [2022-11-20 12:08:14,684 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=804, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1018, PETRI_PLACES=348, PETRI_TRANSITIONS=365} [2022-11-20 12:08:14,685 INFO L288 CegarLoopForPetriNet]: 324 programPoint places, 24 predicate places. [2022-11-20 12:08:14,685 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 365 transitions, 1018 flow [2022-11-20 12:08:14,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 302.2857142857143) internal successors, (2116), 7 states have internal predecessors, (2116), 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) [2022-11-20 12:08:14,687 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:08:14,687 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] [2022-11-20 12:08:14,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:08:14,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:08:14,894 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)] === [2022-11-20 12:08:14,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:08:14,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1326743619, now seen corresponding path program 3 times [2022-11-20 12:08:14,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:08:14,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433738017] [2022-11-20 12:08:14,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:14,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:08:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:15,407 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-20 12:08:15,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:08:15,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433738017] [2022-11-20 12:08:15,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433738017] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:08:15,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597442862] [2022-11-20 12:08:15,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:08:15,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:08:15,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:08:15,410 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:08:15,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:08:15,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-20 12:08:15,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:08:15,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:08:15,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:08:15,759 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-20 12:08:15,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:08:15,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597442862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:08:15,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:08:15,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-11-20 12:08:15,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724619405] [2022-11-20 12:08:15,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:08:15,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:08:15,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:08:15,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:08:15,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:08:15,766 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 356 [2022-11-20 12:08:15,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 365 transitions, 1018 flow. Second operand has 7 states, 7 states have (on average 302.2857142857143) internal successors, (2116), 7 states have internal predecessors, (2116), 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) [2022-11-20 12:08:15,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:08:15,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 356 [2022-11-20 12:08:15,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:08:17,461 INFO L130 PetriNetUnfolder]: 1067/4456 cut-off events. [2022-11-20 12:08:17,461 INFO L131 PetriNetUnfolder]: For 2186/2428 co-relation queries the response was YES. [2022-11-20 12:08:17,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8009 conditions, 4456 events. 1067/4456 cut-off events. For 2186/2428 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 36773 event pairs, 370 based on Foata normal form. 40/4187 useless extension candidates. Maximal degree in co-relation 7992. Up to 704 conditions per place. [2022-11-20 12:08:17,544 INFO L137 encePairwiseOnDemand]: 346/356 looper letters, 146 selfloop transitions, 40 changer transitions 0/487 dead transitions. [2022-11-20 12:08:17,544 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 487 transitions, 1863 flow [2022-11-20 12:08:17,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:08:17,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:08:17,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3425 transitions. [2022-11-20 12:08:17,552 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8746169560776302 [2022-11-20 12:08:17,552 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3425 transitions. [2022-11-20 12:08:17,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3425 transitions. [2022-11-20 12:08:17,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:08:17,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3425 transitions. [2022-11-20 12:08:17,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 311.3636363636364) internal successors, (3425), 11 states have internal predecessors, (3425), 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) [2022-11-20 12:08:17,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 356.0) internal successors, (4272), 12 states have internal predecessors, (4272), 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) [2022-11-20 12:08:17,587 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 356.0) internal successors, (4272), 12 states have internal predecessors, (4272), 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) [2022-11-20 12:08:17,588 INFO L175 Difference]: Start difference. First operand has 348 places, 365 transitions, 1018 flow. Second operand 11 states and 3425 transitions. [2022-11-20 12:08:17,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 487 transitions, 1863 flow [2022-11-20 12:08:17,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 487 transitions, 1863 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:08:17,624 INFO L231 Difference]: Finished difference. Result has 363 places, 392 transitions, 1278 flow [2022-11-20 12:08:17,625 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=1018, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1278, PETRI_PLACES=363, PETRI_TRANSITIONS=392} [2022-11-20 12:08:17,628 INFO L288 CegarLoopForPetriNet]: 324 programPoint places, 39 predicate places. [2022-11-20 12:08:17,628 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 392 transitions, 1278 flow [2022-11-20 12:08:17,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 302.2857142857143) internal successors, (2116), 7 states have internal predecessors, (2116), 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) [2022-11-20 12:08:17,629 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:08:17,630 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] [2022-11-20 12:08:17,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:08:17,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:08:17,836 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)] === [2022-11-20 12:08:17,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:08:17,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1387427943, now seen corresponding path program 4 times [2022-11-20 12:08:17,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:08:17,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140285415] [2022-11-20 12:08:17,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:17,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:08:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:18,388 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-20 12:08:18,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:08:18,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140285415] [2022-11-20 12:08:18,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140285415] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:08:18,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410427387] [2022-11-20 12:08:18,390 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:08:18,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:08:18,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:08:18,395 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:08:18,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:08:18,573 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:08:18,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:08:18,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:08:18,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:08:18,826 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-20 12:08:18,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:08:19,005 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-20 12:08:19,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410427387] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:08:19,006 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:08:19,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-20 12:08:19,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19106581] [2022-11-20 12:08:19,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:08:19,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 12:08:19,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:08:19,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 12:08:19,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-20 12:08:19,019 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 356 [2022-11-20 12:08:19,028 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 392 transitions, 1278 flow. Second operand has 22 states, 22 states have (on average 291.8636363636364) internal successors, (6421), 22 states have internal predecessors, (6421), 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) [2022-11-20 12:08:19,028 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:08:19,028 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 356 [2022-11-20 12:08:19,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:08:19,939 INFO L130 PetriNetUnfolder]: 72/1251 cut-off events. [2022-11-20 12:08:19,939 INFO L131 PetriNetUnfolder]: For 431/464 co-relation queries the response was YES. [2022-11-20 12:08:19,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1889 conditions, 1251 events. 72/1251 cut-off events. For 431/464 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 6202 event pairs, 4 based on Foata normal form. 13/1219 useless extension candidates. Maximal degree in co-relation 1866. Up to 42 conditions per place. [2022-11-20 12:08:19,968 INFO L137 encePairwiseOnDemand]: 332/356 looper letters, 57 selfloop transitions, 51 changer transitions 0/434 dead transitions. [2022-11-20 12:08:19,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 434 transitions, 1662 flow [2022-11-20 12:08:19,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 12:08:19,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-20 12:08:19,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 5010 transitions. [2022-11-20 12:08:19,980 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8278255122273629 [2022-11-20 12:08:19,980 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 5010 transitions. [2022-11-20 12:08:19,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 5010 transitions. [2022-11-20 12:08:19,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:08:19,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 5010 transitions. [2022-11-20 12:08:19,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 294.70588235294116) internal successors, (5010), 17 states have internal predecessors, (5010), 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) [2022-11-20 12:08:20,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 356.0) internal successors, (6408), 18 states have internal predecessors, (6408), 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) [2022-11-20 12:08:20,008 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 356.0) internal successors, (6408), 18 states have internal predecessors, (6408), 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) [2022-11-20 12:08:20,008 INFO L175 Difference]: Start difference. First operand has 363 places, 392 transitions, 1278 flow. Second operand 17 states and 5010 transitions. [2022-11-20 12:08:20,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 434 transitions, 1662 flow [2022-11-20 12:08:20,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 434 transitions, 1650 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-11-20 12:08:20,023 INFO L231 Difference]: Finished difference. Result has 382 places, 413 transitions, 1529 flow [2022-11-20 12:08:20,024 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=1266, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1529, PETRI_PLACES=382, PETRI_TRANSITIONS=413} [2022-11-20 12:08:20,026 INFO L288 CegarLoopForPetriNet]: 324 programPoint places, 58 predicate places. [2022-11-20 12:08:20,027 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 413 transitions, 1529 flow [2022-11-20 12:08:20,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 291.8636363636364) internal successors, (6421), 22 states have internal predecessors, (6421), 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) [2022-11-20 12:08:20,029 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:08:20,029 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] [2022-11-20 12:08:20,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:08:20,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:08:20,239 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)] === [2022-11-20 12:08:20,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:08:20,239 INFO L85 PathProgramCache]: Analyzing trace with hash 593036045, now seen corresponding path program 5 times [2022-11-20 12:08:20,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:08:20,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233843818] [2022-11-20 12:08:20,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:20,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:08:20,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:20,845 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-20 12:08:20,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:08:20,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233843818] [2022-11-20 12:08:20,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233843818] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:08:20,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:08:20,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:08:20,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088368999] [2022-11-20 12:08:20,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:08:20,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:08:20,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:08:20,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:08:20,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:08:20,850 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 356 [2022-11-20 12:08:20,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 413 transitions, 1529 flow. Second operand has 7 states, 7 states have (on average 284.7142857142857) internal successors, (1993), 7 states have internal predecessors, (1993), 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) [2022-11-20 12:08:20,853 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:08:20,853 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 356 [2022-11-20 12:08:20,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:08:21,802 INFO L130 PetriNetUnfolder]: 286/2259 cut-off events. [2022-11-20 12:08:21,803 INFO L131 PetriNetUnfolder]: For 616/745 co-relation queries the response was YES. [2022-11-20 12:08:21,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3327 conditions, 2259 events. 286/2259 cut-off events. For 616/745 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 17427 event pairs, 104 based on Foata normal form. 11/2052 useless extension candidates. Maximal degree in co-relation 3300. Up to 302 conditions per place. [2022-11-20 12:08:21,854 INFO L137 encePairwiseOnDemand]: 349/356 looper letters, 54 selfloop transitions, 4 changer transitions 5/429 dead transitions. [2022-11-20 12:08:21,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 429 transitions, 1694 flow [2022-11-20 12:08:21,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:08:21,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:08:21,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2017 transitions. [2022-11-20 12:08:21,860 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8093900481540931 [2022-11-20 12:08:21,860 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2017 transitions. [2022-11-20 12:08:21,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2017 transitions. [2022-11-20 12:08:21,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:08:21,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2017 transitions. [2022-11-20 12:08:21,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 288.14285714285717) internal successors, (2017), 7 states have internal predecessors, (2017), 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) [2022-11-20 12:08:21,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 356.0) internal successors, (2848), 8 states have internal predecessors, (2848), 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) [2022-11-20 12:08:21,872 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 356.0) internal successors, (2848), 8 states have internal predecessors, (2848), 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) [2022-11-20 12:08:21,872 INFO L175 Difference]: Start difference. First operand has 382 places, 413 transitions, 1529 flow. Second operand 7 states and 2017 transitions. [2022-11-20 12:08:21,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 429 transitions, 1694 flow [2022-11-20 12:08:21,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 429 transitions, 1627 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-11-20 12:08:21,887 INFO L231 Difference]: Finished difference. Result has 384 places, 415 transitions, 1488 flow [2022-11-20 12:08:21,888 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=1462, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1488, PETRI_PLACES=384, PETRI_TRANSITIONS=415} [2022-11-20 12:08:21,889 INFO L288 CegarLoopForPetriNet]: 324 programPoint places, 60 predicate places. [2022-11-20 12:08:21,889 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 415 transitions, 1488 flow [2022-11-20 12:08:21,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 284.7142857142857) internal successors, (1993), 7 states have internal predecessors, (1993), 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) [2022-11-20 12:08:21,890 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:08:21,890 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] [2022-11-20 12:08:21,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:08:21,891 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)] === [2022-11-20 12:08:21,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:08:21,892 INFO L85 PathProgramCache]: Analyzing trace with hash -348538165, now seen corresponding path program 1 times [2022-11-20 12:08:21,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:08:21,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728345599] [2022-11-20 12:08:21,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:21,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:08:22,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:22,665 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-20 12:08:22,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:08:22,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728345599] [2022-11-20 12:08:22,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728345599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:08:22,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:08:22,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:08:22,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816269297] [2022-11-20 12:08:22,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:08:22,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:08:22,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:08:22,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:08:22,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:08:22,672 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 356 [2022-11-20 12:08:22,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 415 transitions, 1488 flow. Second operand has 7 states, 7 states have (on average 312.42857142857144) internal successors, (2187), 7 states have internal predecessors, (2187), 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) [2022-11-20 12:08:22,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:08:22,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 356 [2022-11-20 12:08:22,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:08:26,685 INFO L130 PetriNetUnfolder]: 2354/11265 cut-off events. [2022-11-20 12:08:26,686 INFO L131 PetriNetUnfolder]: For 3813/4085 co-relation queries the response was YES. [2022-11-20 12:08:26,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18639 conditions, 11265 events. 2354/11265 cut-off events. For 3813/4085 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 121723 event pairs, 1080 based on Foata normal form. 180/10833 useless extension candidates. Maximal degree in co-relation 18608. Up to 2502 conditions per place. [2022-11-20 12:08:27,013 INFO L137 encePairwiseOnDemand]: 350/356 looper letters, 54 selfloop transitions, 5 changer transitions 3/453 dead transitions. [2022-11-20 12:08:27,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 453 transitions, 1721 flow [2022-11-20 12:08:27,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:08:27,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:08:27,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1919 transitions. [2022-11-20 12:08:27,019 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8984082397003745 [2022-11-20 12:08:27,019 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1919 transitions. [2022-11-20 12:08:27,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1919 transitions. [2022-11-20 12:08:27,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:08:27,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1919 transitions. [2022-11-20 12:08:27,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 319.8333333333333) internal successors, (1919), 6 states have internal predecessors, (1919), 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) [2022-11-20 12:08:27,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 356.0) internal successors, (2492), 7 states have internal predecessors, (2492), 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) [2022-11-20 12:08:27,031 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 356.0) internal successors, (2492), 7 states have internal predecessors, (2492), 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) [2022-11-20 12:08:27,032 INFO L175 Difference]: Start difference. First operand has 384 places, 415 transitions, 1488 flow. Second operand 6 states and 1919 transitions. [2022-11-20 12:08:27,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 453 transitions, 1721 flow [2022-11-20 12:08:27,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 453 transitions, 1713 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-20 12:08:27,079 INFO L231 Difference]: Finished difference. Result has 386 places, 418 transitions, 1510 flow [2022-11-20 12:08:27,079 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=1480, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1510, PETRI_PLACES=386, PETRI_TRANSITIONS=418} [2022-11-20 12:08:27,082 INFO L288 CegarLoopForPetriNet]: 324 programPoint places, 62 predicate places. [2022-11-20 12:08:27,082 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 418 transitions, 1510 flow [2022-11-20 12:08:27,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.42857142857144) internal successors, (2187), 7 states have internal predecessors, (2187), 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) [2022-11-20 12:08:27,084 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:08:27,084 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] [2022-11-20 12:08:27,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:08:27,086 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)] === [2022-11-20 12:08:27,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:08:27,087 INFO L85 PathProgramCache]: Analyzing trace with hash -350432767, now seen corresponding path program 2 times [2022-11-20 12:08:27,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:08:27,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443728887] [2022-11-20 12:08:27,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:27,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:08:27,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:27,867 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-20 12:08:27,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:08:27,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443728887] [2022-11-20 12:08:27,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443728887] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:08:27,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810683761] [2022-11-20 12:08:27,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:08:27,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:08:27,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:08:27,871 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:08:27,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:08:28,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:08:28,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:08:28,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:08:28,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:08:28,293 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-11-20 12:08:28,293 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:08:28,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810683761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:08:28,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:08:28,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2022-11-20 12:08:28,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557467332] [2022-11-20 12:08:28,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:08:28,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:08:28,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:08:28,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:08:28,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:08:28,298 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 356 [2022-11-20 12:08:28,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 418 transitions, 1510 flow. Second operand has 7 states, 7 states have (on average 302.2857142857143) internal successors, (2116), 7 states have internal predecessors, (2116), 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) [2022-11-20 12:08:28,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:08:28,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 356 [2022-11-20 12:08:28,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:08:31,225 INFO L130 PetriNetUnfolder]: 1746/6660 cut-off events. [2022-11-20 12:08:31,226 INFO L131 PetriNetUnfolder]: For 5555/6731 co-relation queries the response was YES. [2022-11-20 12:08:31,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13580 conditions, 6660 events. 1746/6660 cut-off events. For 5555/6731 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 58410 event pairs, 596 based on Foata normal form. 115/6549 useless extension candidates. Maximal degree in co-relation 13548. Up to 1056 conditions per place. [2022-11-20 12:08:31,405 INFO L137 encePairwiseOnDemand]: 345/356 looper letters, 153 selfloop transitions, 52 changer transitions 0/532 dead transitions. [2022-11-20 12:08:31,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 532 transitions, 2407 flow [2022-11-20 12:08:31,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:08:31,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:08:31,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3433 transitions. [2022-11-20 12:08:31,414 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8766598569969356 [2022-11-20 12:08:31,414 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3433 transitions. [2022-11-20 12:08:31,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3433 transitions. [2022-11-20 12:08:31,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:08:31,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3433 transitions. [2022-11-20 12:08:31,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 312.09090909090907) internal successors, (3433), 11 states have internal predecessors, (3433), 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) [2022-11-20 12:08:31,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 356.0) internal successors, (4272), 12 states have internal predecessors, (4272), 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) [2022-11-20 12:08:31,434 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 356.0) internal successors, (4272), 12 states have internal predecessors, (4272), 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) [2022-11-20 12:08:31,434 INFO L175 Difference]: Start difference. First operand has 386 places, 418 transitions, 1510 flow. Second operand 11 states and 3433 transitions. [2022-11-20 12:08:31,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 532 transitions, 2407 flow [2022-11-20 12:08:31,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 532 transitions, 2403 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:08:31,475 INFO L231 Difference]: Finished difference. Result has 399 places, 433 transitions, 1776 flow [2022-11-20 12:08:31,476 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=1506, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1776, PETRI_PLACES=399, PETRI_TRANSITIONS=433} [2022-11-20 12:08:31,477 INFO L288 CegarLoopForPetriNet]: 324 programPoint places, 75 predicate places. [2022-11-20 12:08:31,478 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 433 transitions, 1776 flow [2022-11-20 12:08:31,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 302.2857142857143) internal successors, (2116), 7 states have internal predecessors, (2116), 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) [2022-11-20 12:08:31,479 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:08:31,479 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] [2022-11-20 12:08:31,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:08:31,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:08:31,687 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)] === [2022-11-20 12:08:31,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:08:31,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1493134797, now seen corresponding path program 3 times [2022-11-20 12:08:31,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:08:31,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914652062] [2022-11-20 12:08:31,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:31,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:08:31,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:32,366 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-20 12:08:32,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:08:32,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914652062] [2022-11-20 12:08:32,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914652062] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:08:32,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343990359] [2022-11-20 12:08:32,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:08:32,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:08:32,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:08:32,369 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:08:32,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 12:08:32,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-20 12:08:32,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:08:32,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:08:32,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:08:32,717 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-11-20 12:08:32,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:08:32,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343990359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:08:32,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:08:32,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2022-11-20 12:08:32,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716804075] [2022-11-20 12:08:32,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:08:32,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:08:32,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:08:32,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:08:32,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:08:32,727 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 356 [2022-11-20 12:08:32,729 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 433 transitions, 1776 flow. Second operand has 7 states, 7 states have (on average 302.2857142857143) internal successors, (2116), 7 states have internal predecessors, (2116), 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) [2022-11-20 12:08:32,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:08:32,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 356 [2022-11-20 12:08:32,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:08:37,115 INFO L130 PetriNetUnfolder]: 2371/11665 cut-off events. [2022-11-20 12:08:37,115 INFO L131 PetriNetUnfolder]: For 12795/13687 co-relation queries the response was YES. [2022-11-20 12:08:37,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22696 conditions, 11665 events. 2371/11665 cut-off events. For 12795/13687 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 126351 event pairs, 484 based on Foata normal form. 213/11485 useless extension candidates. Maximal degree in co-relation 22659. Up to 1326 conditions per place. [2022-11-20 12:08:37,367 INFO L137 encePairwiseOnDemand]: 345/356 looper letters, 170 selfloop transitions, 83 changer transitions 2/582 dead transitions. [2022-11-20 12:08:37,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 582 transitions, 3204 flow [2022-11-20 12:08:37,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 12:08:37,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-20 12:08:37,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4969 transitions. [2022-11-20 12:08:37,377 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8723665730337079 [2022-11-20 12:08:37,377 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4969 transitions. [2022-11-20 12:08:37,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4969 transitions. [2022-11-20 12:08:37,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:08:37,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4969 transitions. [2022-11-20 12:08:37,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 310.5625) internal successors, (4969), 16 states have internal predecessors, (4969), 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) [2022-11-20 12:08:37,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 356.0) internal successors, (6052), 17 states have internal predecessors, (6052), 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) [2022-11-20 12:08:37,527 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 356.0) internal successors, (6052), 17 states have internal predecessors, (6052), 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) [2022-11-20 12:08:37,528 INFO L175 Difference]: Start difference. First operand has 399 places, 433 transitions, 1776 flow. Second operand 16 states and 4969 transitions. [2022-11-20 12:08:37,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 582 transitions, 3204 flow [2022-11-20 12:08:37,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 582 transitions, 3107 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-11-20 12:08:37,592 INFO L231 Difference]: Finished difference. Result has 421 places, 466 transitions, 2336 flow [2022-11-20 12:08:37,593 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=1720, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2336, PETRI_PLACES=421, PETRI_TRANSITIONS=466} [2022-11-20 12:08:37,594 INFO L288 CegarLoopForPetriNet]: 324 programPoint places, 97 predicate places. [2022-11-20 12:08:37,594 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 466 transitions, 2336 flow [2022-11-20 12:08:37,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 302.2857142857143) internal successors, (2116), 7 states have internal predecessors, (2116), 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) [2022-11-20 12:08:37,595 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:08:37,596 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] [2022-11-20 12:08:37,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:08:37,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 12:08:37,803 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)] === [2022-11-20 12:08:37,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:08:37,804 INFO L85 PathProgramCache]: Analyzing trace with hash -331741699, now seen corresponding path program 4 times [2022-11-20 12:08:37,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:08:37,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783535038] [2022-11-20 12:08:37,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:37,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:08:37,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:38,337 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-20 12:08:38,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:08:38,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783535038] [2022-11-20 12:08:38,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783535038] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:08:38,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320333441] [2022-11-20 12:08:38,338 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:08:38,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:08:38,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:08:38,340 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:08:38,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 12:08:39,112 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:08:39,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:08:39,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:08:39,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:08:39,270 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-20 12:08:39,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:08:39,451 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-20 12:08:39,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320333441] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 12:08:39,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:08:39,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 9 [2022-11-20 12:08:39,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457710959] [2022-11-20 12:08:39,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:08:39,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:08:39,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:08:39,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:08:39,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:08:39,456 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 356 [2022-11-20 12:08:39,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 466 transitions, 2336 flow. Second operand has 6 states, 6 states have (on average 312.8333333333333) internal successors, (1877), 6 states have internal predecessors, (1877), 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) [2022-11-20 12:08:39,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:08:39,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 356 [2022-11-20 12:08:39,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:08:46,931 INFO L130 PetriNetUnfolder]: 3852/27734 cut-off events. [2022-11-20 12:08:46,932 INFO L131 PetriNetUnfolder]: For 7544/7771 co-relation queries the response was YES. [2022-11-20 12:08:47,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40068 conditions, 27734 events. 3852/27734 cut-off events. For 7544/7771 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 368063 event pairs, 237 based on Foata normal form. 133/26353 useless extension candidates. Maximal degree in co-relation 40021. Up to 1883 conditions per place. [2022-11-20 12:08:47,623 INFO L137 encePairwiseOnDemand]: 347/356 looper letters, 58 selfloop transitions, 18 changer transitions 1/516 dead transitions. [2022-11-20 12:08:47,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 516 transitions, 2644 flow [2022-11-20 12:08:47,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:08:47,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 12:08:47,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2551 transitions. [2022-11-20 12:08:47,629 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8957162921348315 [2022-11-20 12:08:47,629 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2551 transitions. [2022-11-20 12:08:47,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2551 transitions. [2022-11-20 12:08:47,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:08:47,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2551 transitions. [2022-11-20 12:08:47,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 318.875) internal successors, (2551), 8 states have internal predecessors, (2551), 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) [2022-11-20 12:08:47,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 356.0) internal successors, (3204), 9 states have internal predecessors, (3204), 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) [2022-11-20 12:08:47,647 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 356.0) internal successors, (3204), 9 states have internal predecessors, (3204), 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) [2022-11-20 12:08:47,648 INFO L175 Difference]: Start difference. First operand has 421 places, 466 transitions, 2336 flow. Second operand 8 states and 2551 transitions. [2022-11-20 12:08:47,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 516 transitions, 2644 flow [2022-11-20 12:08:47,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 516 transitions, 2600 flow, removed 14 selfloop flow, removed 3 redundant places. [2022-11-20 12:08:47,778 INFO L231 Difference]: Finished difference. Result has 429 places, 478 transitions, 2405 flow [2022-11-20 12:08:47,779 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=2292, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2405, PETRI_PLACES=429, PETRI_TRANSITIONS=478} [2022-11-20 12:08:47,780 INFO L288 CegarLoopForPetriNet]: 324 programPoint places, 105 predicate places. [2022-11-20 12:08:47,780 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 478 transitions, 2405 flow [2022-11-20 12:08:47,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 312.8333333333333) internal successors, (1877), 6 states have internal predecessors, (1877), 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) [2022-11-20 12:08:47,781 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:08:47,781 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] [2022-11-20 12:08:47,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 12:08:47,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 12:08:47,991 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)] === [2022-11-20 12:08:47,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:08:47,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1741677381, now seen corresponding path program 5 times [2022-11-20 12:08:47,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:08:47,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572753267] [2022-11-20 12:08:47,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:47,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:08:48,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:48,627 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-20 12:08:48,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:08:48,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572753267] [2022-11-20 12:08:48,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572753267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:08:48,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:08:48,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:08:48,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246739905] [2022-11-20 12:08:48,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:08:48,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:08:48,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:08:48,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:08:48,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:08:48,634 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 356 [2022-11-20 12:08:48,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 478 transitions, 2405 flow. Second operand has 7 states, 7 states have (on average 312.42857142857144) internal successors, (2187), 7 states have internal predecessors, (2187), 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) [2022-11-20 12:08:48,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:08:48,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 356 [2022-11-20 12:08:48,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:08:55,793 INFO L130 PetriNetUnfolder]: 4717/24010 cut-off events. [2022-11-20 12:08:55,793 INFO L131 PetriNetUnfolder]: For 25746/26600 co-relation queries the response was YES. [2022-11-20 12:08:56,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46820 conditions, 24010 events. 4717/24010 cut-off events. For 25746/26600 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 301644 event pairs, 1749 based on Foata normal form. 437/23255 useless extension candidates. Maximal degree in co-relation 46768. Up to 3741 conditions per place. [2022-11-20 12:08:56,521 INFO L137 encePairwiseOnDemand]: 349/356 looper letters, 72 selfloop transitions, 15 changer transitions 3/529 dead transitions. [2022-11-20 12:08:56,521 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 529 transitions, 2812 flow [2022-11-20 12:08:56,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:08:56,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:08:56,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1926 transitions. [2022-11-20 12:08:56,531 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.901685393258427 [2022-11-20 12:08:56,532 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1926 transitions. [2022-11-20 12:08:56,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1926 transitions. [2022-11-20 12:08:56,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:08:56,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1926 transitions. [2022-11-20 12:08:56,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 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) [2022-11-20 12:08:56,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 356.0) internal successors, (2492), 7 states have internal predecessors, (2492), 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) [2022-11-20 12:08:56,550 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 356.0) internal successors, (2492), 7 states have internal predecessors, (2492), 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) [2022-11-20 12:08:56,550 INFO L175 Difference]: Start difference. First operand has 429 places, 478 transitions, 2405 flow. Second operand 6 states and 1926 transitions. [2022-11-20 12:08:56,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 529 transitions, 2812 flow [2022-11-20 12:08:56,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 529 transitions, 2802 flow, removed 5 selfloop flow, removed 0 redundant places. [2022-11-20 12:08:56,840 INFO L231 Difference]: Finished difference. Result has 437 places, 485 transitions, 2502 flow [2022-11-20 12:08:56,841 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=2401, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2502, PETRI_PLACES=437, PETRI_TRANSITIONS=485} [2022-11-20 12:08:56,841 INFO L288 CegarLoopForPetriNet]: 324 programPoint places, 113 predicate places. [2022-11-20 12:08:56,842 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 485 transitions, 2502 flow [2022-11-20 12:08:56,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.42857142857144) internal successors, (2187), 7 states have internal predecessors, (2187), 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) [2022-11-20 12:08:56,843 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:08:56,843 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] [2022-11-20 12:08:56,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 12:08:56,843 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 12:08:56,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:08:56,844 INFO L85 PathProgramCache]: Analyzing trace with hash 910961939, now seen corresponding path program 6 times [2022-11-20 12:08:56,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:08:56,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923355280] [2022-11-20 12:08:56,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:56,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:08:56,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:57,322 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-20 12:08:57,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:08:57,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923355280] [2022-11-20 12:08:57,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923355280] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:08:57,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058931472] [2022-11-20 12:08:57,325 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 12:08:57,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:08:57,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:08:57,328 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:08:57,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 12:08:57,519 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-11-20 12:08:57,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:08:57,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:08:57,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:08:57,763 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-11-20 12:08:57,763 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:08:57,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058931472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:08:57,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:08:57,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2022-11-20 12:08:57,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248807514] [2022-11-20 12:08:57,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:08:57,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:08:57,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:08:57,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:08:57,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:08:57,768 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 356 [2022-11-20 12:08:57,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 485 transitions, 2502 flow. Second operand has 7 states, 7 states have (on average 302.2857142857143) internal successors, (2116), 7 states have internal predecessors, (2116), 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) [2022-11-20 12:08:57,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:08:57,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 356 [2022-11-20 12:08:57,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:09:05,916 INFO L130 PetriNetUnfolder]: 3752/26473 cut-off events. [2022-11-20 12:09:05,916 INFO L131 PetriNetUnfolder]: For 36062/37719 co-relation queries the response was YES. [2022-11-20 12:09:06,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49166 conditions, 26473 events. 3752/26473 cut-off events. For 36062/37719 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 342704 event pairs, 1092 based on Foata normal form. 396/25657 useless extension candidates. Maximal degree in co-relation 49110. Up to 3711 conditions per place. [2022-11-20 12:09:06,775 INFO L137 encePairwiseOnDemand]: 345/356 looper letters, 167 selfloop transitions, 63 changer transitions 0/576 dead transitions. [2022-11-20 12:09:06,775 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 576 transitions, 3604 flow [2022-11-20 12:09:06,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:09:06,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:09:06,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3413 transitions. [2022-11-20 12:09:06,781 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8715526046986721 [2022-11-20 12:09:06,782 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3413 transitions. [2022-11-20 12:09:06,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3413 transitions. [2022-11-20 12:09:06,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:09:06,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3413 transitions. [2022-11-20 12:09:06,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 310.27272727272725) internal successors, (3413), 11 states have internal predecessors, (3413), 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) [2022-11-20 12:09:06,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 356.0) internal successors, (4272), 12 states have internal predecessors, (4272), 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) [2022-11-20 12:09:06,801 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 356.0) internal successors, (4272), 12 states have internal predecessors, (4272), 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) [2022-11-20 12:09:06,801 INFO L175 Difference]: Start difference. First operand has 437 places, 485 transitions, 2502 flow. Second operand 11 states and 3413 transitions. [2022-11-20 12:09:06,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 576 transitions, 3604 flow [2022-11-20 12:09:07,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 576 transitions, 3591 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-20 12:09:07,086 INFO L231 Difference]: Finished difference. Result has 452 places, 507 transitions, 2982 flow [2022-11-20 12:09:07,087 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=2489, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2982, PETRI_PLACES=452, PETRI_TRANSITIONS=507} [2022-11-20 12:09:07,088 INFO L288 CegarLoopForPetriNet]: 324 programPoint places, 128 predicate places. [2022-11-20 12:09:07,089 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 507 transitions, 2982 flow [2022-11-20 12:09:07,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 302.2857142857143) internal successors, (2116), 7 states have internal predecessors, (2116), 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) [2022-11-20 12:09:07,089 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:09:07,090 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] [2022-11-20 12:09:07,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 12:09:07,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe16887-8fad-4545-ba4c-d46eebcb44f9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 12:09:07,297 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 12:09:07,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:09:07,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1956920013, now seen corresponding path program 7 times [2022-11-20 12:09:07,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:09:07,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066329394] [2022-11-20 12:09:07,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:07,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:09:07,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:07,885 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-20 12:09:07,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:09:07,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066329394] [2022-11-20 12:09:07,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066329394] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:09:07,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:09:07,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:09:07,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291423543] [2022-11-20 12:09:07,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:09:07,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:09:07,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:09:07,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:09:07,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:09:07,890 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 356 [2022-11-20 12:09:07,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 507 transitions, 2982 flow. Second operand has 6 states, 6 states have (on average 312.8333333333333) internal successors, (1877), 6 states have internal predecessors, (1877), 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) [2022-11-20 12:09:07,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:09:07,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 356 [2022-11-20 12:09:07,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand