./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb065810-e955-4ff2-8881-b3b4dd77e6d4/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb065810-e955-4ff2-8881-b3b4dd77e6d4/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_eb065810-e955-4ff2-8881-b3b4dd77e6d4/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb065810-e955-4ff2-8881-b3b4dd77e6d4/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb065810-e955-4ff2-8881-b3b4dd77e6d4/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_eb065810-e955-4ff2-8881-b3b4dd77e6d4/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 7a18ee378e36a8b6ec16846ba26aa7ebab799f55311c04bb5b266d3aa0d0986d --- 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 09:29:45,377 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:29:45,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:29:45,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:29:45,425 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:29:45,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:29:45,427 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:29:45,429 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:29:45,431 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:29:45,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:29:45,433 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:29:45,434 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:29:45,434 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:29:45,442 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:29:45,444 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:29:45,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:29:45,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:29:45,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:29:45,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:29:45,464 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:29:45,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:29:45,470 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:29:45,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:29:45,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:29:45,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:29:45,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:29:45,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:29:45,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:29:45,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:29:45,486 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:29:45,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:29:45,487 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:29:45,488 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:29:45,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:29:45,490 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:29:45,490 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:29:45,491 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:29:45,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:29:45,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:29:45,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:29:45,497 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:29:45,498 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb065810-e955-4ff2-8881-b3b4dd77e6d4/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 09:29:45,540 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:29:45,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:29:45,541 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:29:45,542 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:29:45,542 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:29:45,543 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:29:45,543 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:29:45,544 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:29:45,544 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:29:45,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:29:45,545 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:29:45,545 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:29:45,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:29:45,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:29:45,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:29:45,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:29:45,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:29:45,546 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:29:45,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:29:45,547 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:29:45,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:29:45,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:29:45,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:29:45,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:29:45,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:29:45,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:29:45,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:29:45,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:29:45,549 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:29:45,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:29:45,550 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:29:45,550 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:29:45,550 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:29:45,550 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_eb065810-e955-4ff2-8881-b3b4dd77e6d4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb065810-e955-4ff2-8881-b3b4dd77e6d4/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a18ee378e36a8b6ec16846ba26aa7ebab799f55311c04bb5b266d3aa0d0986d [2022-11-20 09:29:45,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:29:45,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:29:45,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:29:45,885 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:29:45,885 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:29:45,886 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb065810-e955-4ff2-8881-b3b4dd77e6d4/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2022-11-20 09:29:49,045 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:29:49,261 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:29:49,262 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb065810-e955-4ff2-8881-b3b4dd77e6d4/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2022-11-20 09:29:49,269 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb065810-e955-4ff2-8881-b3b4dd77e6d4/bin/uautomizer-ug76WZFUDN/data/6824760f4/c17c82e9032e44f5a1d044f7f086755d/FLAGe291d117e [2022-11-20 09:29:49,283 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb065810-e955-4ff2-8881-b3b4dd77e6d4/bin/uautomizer-ug76WZFUDN/data/6824760f4/c17c82e9032e44f5a1d044f7f086755d [2022-11-20 09:29:49,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:29:49,288 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:29:49,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:29:49,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:29:49,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:29:49,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:29:49" (1/1) ... [2022-11-20 09:29:49,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@131575f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:49, skipping insertion in model container [2022-11-20 09:29:49,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:29:49" (1/1) ... [2022-11-20 09:29:49,302 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:29:49,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:29:49,583 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_eb065810-e955-4ff2-8881-b3b4dd77e6d4/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c[4788,4801] [2022-11-20 09:29:49,593 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:29:49,609 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:29:49,643 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_eb065810-e955-4ff2-8881-b3b4dd77e6d4/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c[4788,4801] [2022-11-20 09:29:49,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:29:49,684 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:29:49,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:49 WrapperNode [2022-11-20 09:29:49,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:29:49,686 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:29:49,686 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:29:49,687 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:29:49,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:49" (1/1) ... [2022-11-20 09:29:49,723 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:49" (1/1) ... [2022-11-20 09:29:49,763 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 297 [2022-11-20 09:29:49,763 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:29:49,764 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:29:49,764 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:29:49,764 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:29:49,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:49" (1/1) ... [2022-11-20 09:29:49,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:49" (1/1) ... [2022-11-20 09:29:49,796 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:49" (1/1) ... [2022-11-20 09:29:49,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:49" (1/1) ... [2022-11-20 09:29:49,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:49" (1/1) ... [2022-11-20 09:29:49,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:49" (1/1) ... [2022-11-20 09:29:49,826 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:49" (1/1) ... [2022-11-20 09:29:49,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:49" (1/1) ... [2022-11-20 09:29:49,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:29:49,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:29:49,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:29:49,858 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:29:49,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:49" (1/1) ... [2022-11-20 09:29:49,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:29:49,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb065810-e955-4ff2-8881-b3b4dd77e6d4/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:49,912 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb065810-e955-4ff2-8881-b3b4dd77e6d4/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:29:49,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb065810-e955-4ff2-8881-b3b4dd77e6d4/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:29:49,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:29:49,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 09:29:49,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 09:29:49,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 09:29:49,970 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 09:29:49,971 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 09:29:49,971 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 09:29:49,971 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 09:29:49,972 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 09:29:49,972 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 09:29:49,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 09:29:49,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 09:29:49,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:29:49,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:29:49,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 09:29:49,974 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 09:29:50,091 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:29:50,093 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:29:50,731 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:29:50,745 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:29:50,756 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 09:29:50,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:29:50 BoogieIcfgContainer [2022-11-20 09:29:50,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:29:50,762 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:29:50,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:29:50,771 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:29:50,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:29:49" (1/3) ... [2022-11-20 09:29:50,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb2d581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:29:50, skipping insertion in model container [2022-11-20 09:29:50,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:49" (2/3) ... [2022-11-20 09:29:50,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb2d581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:29:50, skipping insertion in model container [2022-11-20 09:29:50,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:29:50" (3/3) ... [2022-11-20 09:29:50,774 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-trans.wvr.c [2022-11-20 09:29:50,783 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 09:29:50,794 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:29:50,795 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 09:29:50,795 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 09:29:50,912 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 09:29:50,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 359 places, 375 transitions, 774 flow [2022-11-20 09:29:51,167 INFO L130 PetriNetUnfolder]: 26/372 cut-off events. [2022-11-20 09:29:51,167 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 09:29:51,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385 conditions, 372 events. 26/372 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 884 event pairs, 0 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 274. Up to 2 conditions per place. [2022-11-20 09:29:51,180 INFO L82 GeneralOperation]: Start removeDead. Operand has 359 places, 375 transitions, 774 flow [2022-11-20 09:29:51,197 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 345 places, 361 transitions, 740 flow [2022-11-20 09:29:51,213 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:29:51,219 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;@cf56a40, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:29:51,220 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-20 09:29:51,319 INFO L130 PetriNetUnfolder]: 26/360 cut-off events. [2022-11-20 09:29:51,319 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 09:29:51,319 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:29:51,320 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] [2022-11-20 09:29:51,322 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 09:29:51,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:51,330 INFO L85 PathProgramCache]: Analyzing trace with hash 758692583, now seen corresponding path program 1 times [2022-11-20 09:29:51,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:51,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47396362] [2022-11-20 09:29:51,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:51,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:51,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:51,754 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 09:29:51,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:51,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47396362] [2022-11-20 09:29:51,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47396362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:51,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:51,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:29:51,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439057200] [2022-11-20 09:29:51,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:51,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 09:29:51,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:51,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 09:29:51,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 09:29:51,815 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 349 out of 375 [2022-11-20 09:29:51,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 361 transitions, 740 flow. Second operand has 2 states, 2 states have (on average 354.0) internal successors, (708), 2 states have internal predecessors, (708), 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 09:29:51,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:29:51,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 349 of 375 [2022-11-20 09:29:51,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:29:51,959 INFO L130 PetriNetUnfolder]: 7/342 cut-off events. [2022-11-20 09:29:51,960 INFO L131 PetriNetUnfolder]: For 14/16 co-relation queries the response was YES. [2022-11-20 09:29:51,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 342 events. 7/342 cut-off events. For 14/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 853 event pairs, 0 based on Foata normal form. 36/356 useless extension candidates. Maximal degree in co-relation 263. Up to 7 conditions per place. [2022-11-20 09:29:51,968 INFO L137 encePairwiseOnDemand]: 356/375 looper letters, 6 selfloop transitions, 0 changer transitions 3/342 dead transitions. [2022-11-20 09:29:51,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 342 transitions, 714 flow [2022-11-20 09:29:51,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 09:29:51,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 09:29:51,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 723 transitions. [2022-11-20 09:29:51,993 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.964 [2022-11-20 09:29:51,994 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 723 transitions. [2022-11-20 09:29:51,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 723 transitions. [2022-11-20 09:29:51,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:29:52,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 723 transitions. [2022-11-20 09:29:52,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 361.5) internal successors, (723), 2 states have internal predecessors, (723), 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 09:29:52,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 375.0) internal successors, (1125), 3 states have internal predecessors, (1125), 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 09:29:52,018 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 375.0) internal successors, (1125), 3 states have internal predecessors, (1125), 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 09:29:52,020 INFO L175 Difference]: Start difference. First operand has 345 places, 361 transitions, 740 flow. Second operand 2 states and 723 transitions. [2022-11-20 09:29:52,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 342 transitions, 714 flow [2022-11-20 09:29:52,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 342 transitions, 702 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 09:29:52,035 INFO L231 Difference]: Finished difference. Result has 340 places, 339 transitions, 684 flow [2022-11-20 09:29:52,037 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=684, PETRI_PLACES=340, PETRI_TRANSITIONS=339} [2022-11-20 09:29:52,044 INFO L288 CegarLoopForPetriNet]: 345 programPoint places, -5 predicate places. [2022-11-20 09:29:52,044 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 339 transitions, 684 flow [2022-11-20 09:29:52,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 354.0) internal successors, (708), 2 states have internal predecessors, (708), 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 09:29:52,046 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:29:52,046 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] [2022-11-20 09:29:52,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 09:29:52,047 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 09:29:52,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:52,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1759165071, now seen corresponding path program 1 times [2022-11-20 09:29:52,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:52,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250705684] [2022-11-20 09:29:52,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:52,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:52,507 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 09:29:52,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:52,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250705684] [2022-11-20 09:29:52,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250705684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:52,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:52,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:29:52,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413567627] [2022-11-20 09:29:52,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:52,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:29:52,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:52,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:29:52,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:29:52,514 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 337 out of 375 [2022-11-20 09:29:52,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 339 transitions, 684 flow. Second operand has 5 states, 5 states have (on average 339.8) internal successors, (1699), 5 states have internal predecessors, (1699), 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 09:29:52,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:29:52,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 337 of 375 [2022-11-20 09:29:52,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:29:52,698 INFO L130 PetriNetUnfolder]: 7/345 cut-off events. [2022-11-20 09:29:52,698 INFO L131 PetriNetUnfolder]: For 3/5 co-relation queries the response was YES. [2022-11-20 09:29:52,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373 conditions, 345 events. 7/345 cut-off events. For 3/5 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 848 event pairs, 0 based on Foata normal form. 0/326 useless extension candidates. Maximal degree in co-relation 370. Up to 16 conditions per place. [2022-11-20 09:29:52,703 INFO L137 encePairwiseOnDemand]: 370/375 looper letters, 18 selfloop transitions, 4 changer transitions 0/343 dead transitions. [2022-11-20 09:29:52,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 343 transitions, 736 flow [2022-11-20 09:29:52,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:29:52,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:29:52,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1708 transitions. [2022-11-20 09:29:52,711 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9109333333333334 [2022-11-20 09:29:52,711 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1708 transitions. [2022-11-20 09:29:52,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1708 transitions. [2022-11-20 09:29:52,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:29:52,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1708 transitions. [2022-11-20 09:29:52,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 341.6) internal successors, (1708), 5 states have internal predecessors, (1708), 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 09:29:52,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 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 09:29:52,726 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 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 09:29:52,726 INFO L175 Difference]: Start difference. First operand has 340 places, 339 transitions, 684 flow. Second operand 5 states and 1708 transitions. [2022-11-20 09:29:52,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 343 transitions, 736 flow [2022-11-20 09:29:52,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 343 transitions, 736 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 09:29:52,738 INFO L231 Difference]: Finished difference. Result has 342 places, 340 transitions, 700 flow [2022-11-20 09:29:52,739 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=700, PETRI_PLACES=342, PETRI_TRANSITIONS=340} [2022-11-20 09:29:52,739 INFO L288 CegarLoopForPetriNet]: 345 programPoint places, -3 predicate places. [2022-11-20 09:29:52,740 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 340 transitions, 700 flow [2022-11-20 09:29:52,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 339.8) internal successors, (1699), 5 states have internal predecessors, (1699), 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 09:29:52,742 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:29:52,742 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] [2022-11-20 09:29:52,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 09:29:52,743 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 09:29:52,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:52,745 INFO L85 PathProgramCache]: Analyzing trace with hash 218048336, now seen corresponding path program 1 times [2022-11-20 09:29:52,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:52,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109845021] [2022-11-20 09:29:52,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:52,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:52,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:53,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:53,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:53,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109845021] [2022-11-20 09:29:53,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109845021] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:53,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769534720] [2022-11-20 09:29:53,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:53,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:53,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb065810-e955-4ff2-8881-b3b4dd77e6d4/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:53,191 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb065810-e955-4ff2-8881-b3b4dd77e6d4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:53,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb065810-e955-4ff2-8881-b3b4dd77e6d4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 09:29:53,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:53,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 09:29:53,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:53,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:53,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:53,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:53,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769534720] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:29:53,782 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:29:53,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-11-20 09:29:53,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785162377] [2022-11-20 09:29:53,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:29:53,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 09:29:53,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:53,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 09:29:53,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-20 09:29:53,792 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 375 [2022-11-20 09:29:53,799 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 340 transitions, 700 flow. Second operand has 14 states, 14 states have (on average 338.7857142857143) internal successors, (4743), 14 states have internal predecessors, (4743), 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 09:29:53,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:29:53,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 375 [2022-11-20 09:29:53,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:29:54,059 INFO L130 PetriNetUnfolder]: 7/354 cut-off events. [2022-11-20 09:29:54,060 INFO L131 PetriNetUnfolder]: For 7/9 co-relation queries the response was YES. [2022-11-20 09:29:54,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 354 events. 7/354 cut-off events. For 7/9 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 840 event pairs, 0 based on Foata normal form. 2/338 useless extension candidates. Maximal degree in co-relation 395. Up to 13 conditions per place. [2022-11-20 09:29:54,064 INFO L137 encePairwiseOnDemand]: 367/375 looper letters, 19 selfloop transitions, 11 changer transitions 0/350 dead transitions. [2022-11-20 09:29:54,065 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 350 transitions, 782 flow [2022-11-20 09:29:54,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 09:29:54,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 09:29:54,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3728 transitions. [2022-11-20 09:29:54,073 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9037575757575758 [2022-11-20 09:29:54,073 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3728 transitions. [2022-11-20 09:29:54,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3728 transitions. [2022-11-20 09:29:54,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:29:54,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3728 transitions. [2022-11-20 09:29:54,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 338.90909090909093) internal successors, (3728), 11 states have internal predecessors, (3728), 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 09:29:54,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 375.0) internal successors, (4500), 12 states have internal predecessors, (4500), 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 09:29:54,096 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 375.0) internal successors, (4500), 12 states have internal predecessors, (4500), 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 09:29:54,096 INFO L175 Difference]: Start difference. First operand has 342 places, 340 transitions, 700 flow. Second operand 11 states and 3728 transitions. [2022-11-20 09:29:54,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 350 transitions, 782 flow [2022-11-20 09:29:54,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 350 transitions, 776 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 09:29:54,104 INFO L231 Difference]: Finished difference. Result has 352 places, 346 transitions, 749 flow [2022-11-20 09:29:54,105 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=749, PETRI_PLACES=352, PETRI_TRANSITIONS=346} [2022-11-20 09:29:54,105 INFO L288 CegarLoopForPetriNet]: 345 programPoint places, 7 predicate places. [2022-11-20 09:29:54,106 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 346 transitions, 749 flow [2022-11-20 09:29:54,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 338.7857142857143) internal successors, (4743), 14 states have internal predecessors, (4743), 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 09:29:54,109 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:29:54,109 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:54,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb065810-e955-4ff2-8881-b3b4dd77e6d4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:54,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb065810-e955-4ff2-8881-b3b4dd77e6d4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-20 09:29:54,317 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 09:29:54,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:54,318 INFO L85 PathProgramCache]: Analyzing trace with hash 681717692, now seen corresponding path program 2 times [2022-11-20 09:29:54,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:54,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537752922] [2022-11-20 09:29:54,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:54,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:54,913 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 09:29:54,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:54,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537752922] [2022-11-20 09:29:54,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537752922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:54,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:54,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 09:29:54,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11877120] [2022-11-20 09:29:54,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:54,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 09:29:54,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:54,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 09:29:54,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:29:54,921 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 375 [2022-11-20 09:29:54,924 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 346 transitions, 749 flow. Second operand has 9 states, 9 states have (on average 304.22222222222223) internal successors, (2738), 9 states have internal predecessors, (2738), 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 09:29:54,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:29:54,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 375 [2022-11-20 09:29:54,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:29:57,546 INFO L130 PetriNetUnfolder]: 2368/9199 cut-off events. [2022-11-20 09:29:57,546 INFO L131 PetriNetUnfolder]: For 135/135 co-relation queries the response was YES. [2022-11-20 09:29:57,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13046 conditions, 9199 events. 2368/9199 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 101481 event pairs, 815 based on Foata normal form. 1/8417 useless extension candidates. Maximal degree in co-relation 13038. Up to 1390 conditions per place. [2022-11-20 09:29:57,662 INFO L137 encePairwiseOnDemand]: 359/375 looper letters, 120 selfloop transitions, 14 changer transitions 4/432 dead transitions. [2022-11-20 09:29:57,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 432 transitions, 1213 flow [2022-11-20 09:29:57,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 09:29:57,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 09:29:57,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3139 transitions. [2022-11-20 09:29:57,675 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8370666666666666 [2022-11-20 09:29:57,676 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3139 transitions. [2022-11-20 09:29:57,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3139 transitions. [2022-11-20 09:29:57,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:29:57,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3139 transitions. [2022-11-20 09:29:57,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 313.9) internal successors, (3139), 10 states have internal predecessors, (3139), 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 09:29:57,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 375.0) internal successors, (4125), 11 states have internal predecessors, (4125), 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 09:29:57,699 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 375.0) internal successors, (4125), 11 states have internal predecessors, (4125), 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 09:29:57,699 INFO L175 Difference]: Start difference. First operand has 352 places, 346 transitions, 749 flow. Second operand 10 states and 3139 transitions. [2022-11-20 09:29:57,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 432 transitions, 1213 flow [2022-11-20 09:29:57,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 432 transitions, 1204 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-20 09:29:57,712 INFO L231 Difference]: Finished difference. Result has 364 places, 352 transitions, 811 flow [2022-11-20 09:29:57,713 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=811, PETRI_PLACES=364, PETRI_TRANSITIONS=352} [2022-11-20 09:29:57,714 INFO L288 CegarLoopForPetriNet]: 345 programPoint places, 19 predicate places. [2022-11-20 09:29:57,714 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 352 transitions, 811 flow [2022-11-20 09:29:57,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 304.22222222222223) internal successors, (2738), 9 states have internal predecessors, (2738), 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 09:29:57,716 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:29:57,716 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:29:57,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 09:29:57,718 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 09:29:57,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:57,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1157167009, now seen corresponding path program 1 times [2022-11-20 09:29:57,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:57,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242582226] [2022-11-20 09:29:57,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:57,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:58,660 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 09:29:58,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:58,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242582226] [2022-11-20 09:29:58,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242582226] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:58,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127349641] [2022-11-20 09:29:58,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:58,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:58,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb065810-e955-4ff2-8881-b3b4dd77e6d4/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:58,664 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb065810-e955-4ff2-8881-b3b4dd77e6d4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:58,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb065810-e955-4ff2-8881-b3b4dd77e6d4/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 09:29:58,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:58,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 09:29:58,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:59,812 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 09:29:59,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:30:00,325 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 09:30:00,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127349641] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:30:00,325 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:30:00,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 13] total 23 [2022-11-20 09:30:00,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990277606] [2022-11-20 09:30:00,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:30:00,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 09:30:00,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:00,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 09:30:00,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2022-11-20 09:30:00,334 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 375 [2022-11-20 09:30:00,341 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 352 transitions, 811 flow. Second operand has 23 states, 23 states have (on average 280.5217391304348) internal successors, (6452), 23 states have internal predecessors, (6452), 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 09:30:00,341 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:30:00,341 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 375 [2022-11-20 09:30:00,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand