./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a --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 23bd321b64eb98f17ff91aefc669d9f5b78966b876ea50803bd27f8c9b624679 --- 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-b5237d8 [2022-11-21 09:02:20,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 09:02:20,310 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 09:02:20,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 09:02:20,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 09:02:20,350 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 09:02:20,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 09:02:20,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 09:02:20,364 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 09:02:20,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 09:02:20,371 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 09:02:20,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 09:02:20,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 09:02:20,377 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 09:02:20,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 09:02:20,382 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 09:02:20,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 09:02:20,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 09:02:20,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 09:02:20,393 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 09:02:20,396 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 09:02:20,397 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 09:02:20,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 09:02:20,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 09:02:20,405 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 09:02:20,408 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 09:02:20,409 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 09:02:20,410 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 09:02:20,412 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 09:02:20,414 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 09:02:20,414 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 09:02:20,415 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 09:02:20,416 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 09:02:20,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 09:02:20,418 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 09:02:20,418 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 09:02:20,419 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 09:02:20,419 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 09:02:20,419 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 09:02:20,420 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 09:02:20,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 09:02:20,422 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 09:02:20,445 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 09:02:20,449 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 09:02:20,450 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 09:02:20,450 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 09:02:20,451 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 09:02:20,452 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 09:02:20,452 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 09:02:20,453 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 09:02:20,453 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 09:02:20,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 09:02:20,454 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 09:02:20,454 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 09:02:20,455 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 09:02:20,455 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 09:02:20,455 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 09:02:20,455 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 09:02:20,455 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 09:02:20,456 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 09:02:20,456 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 09:02:20,456 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 09:02:20,456 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 09:02:20,457 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 09:02:20,457 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 09:02:20,457 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 09:02:20,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:02:20,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 09:02:20,458 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 09:02:20,458 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 09:02:20,459 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 09:02:20,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 09:02:20,459 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 09:02:20,459 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 09:02:20,460 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 09:02:20,460 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_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23bd321b64eb98f17ff91aefc669d9f5b78966b876ea50803bd27f8c9b624679 [2022-11-21 09:02:20,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 09:02:20,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 09:02:20,815 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 09:02:20,817 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 09:02:20,817 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 09:02:20,819 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2022-11-21 09:02:23,908 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 09:02:24,165 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 09:02:24,165 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2022-11-21 09:02:24,173 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/data/a8d097342/fee0874d6b974e9fbcd5e131269b4eda/FLAG709beab5a [2022-11-21 09:02:24,189 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/data/a8d097342/fee0874d6b974e9fbcd5e131269b4eda [2022-11-21 09:02:24,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 09:02:24,193 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 09:02:24,194 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 09:02:24,194 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 09:02:24,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 09:02:24,199 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:02:24" (1/1) ... [2022-11-21 09:02:24,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@277f5abd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:24, skipping insertion in model container [2022-11-21 09:02:24,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:02:24" (1/1) ... [2022-11-21 09:02:24,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 09:02:24,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 09:02:24,493 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_309d84ce-ac90-4de1-9591-3ce4903e6dff/sv-benchmarks/c/weaver/array-eq-trans.wvr.c[2737,2750] [2022-11-21 09:02:24,514 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:02:24,529 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 09:02:24,556 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_309d84ce-ac90-4de1-9591-3ce4903e6dff/sv-benchmarks/c/weaver/array-eq-trans.wvr.c[2737,2750] [2022-11-21 09:02:24,565 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:02:24,584 INFO L208 MainTranslator]: Completed translation [2022-11-21 09:02:24,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:24 WrapperNode [2022-11-21 09:02:24,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 09:02:24,587 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 09:02:24,587 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 09:02:24,587 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 09:02:24,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:24" (1/1) ... [2022-11-21 09:02:24,615 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:24" (1/1) ... [2022-11-21 09:02:24,664 INFO L138 Inliner]: procedures = 24, calls = 46, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 204 [2022-11-21 09:02:24,665 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 09:02:24,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 09:02:24,666 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 09:02:24,666 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 09:02:24,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:24" (1/1) ... [2022-11-21 09:02:24,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:24" (1/1) ... [2022-11-21 09:02:24,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:24" (1/1) ... [2022-11-21 09:02:24,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:24" (1/1) ... [2022-11-21 09:02:24,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:24" (1/1) ... [2022-11-21 09:02:24,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:24" (1/1) ... [2022-11-21 09:02:24,730 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:24" (1/1) ... [2022-11-21 09:02:24,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:24" (1/1) ... [2022-11-21 09:02:24,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 09:02:24,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 09:02:24,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 09:02:24,745 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 09:02:24,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:24" (1/1) ... [2022-11-21 09:02:24,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:02:24,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:02:24,791 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 09:02:24,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 09:02:24,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 09:02:24,845 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 09:02:24,845 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 09:02:24,846 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 09:02:24,846 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 09:02:24,846 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-21 09:02:24,846 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-21 09:02:24,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 09:02:24,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 09:02:24,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 09:02:24,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 09:02:24,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 09:02:24,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 09:02:24,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 09:02:24,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 09:02:24,850 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 09:02:24,977 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 09:02:24,979 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 09:02:25,501 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 09:02:25,515 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 09:02:25,516 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-21 09:02:25,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:02:25 BoogieIcfgContainer [2022-11-21 09:02:25,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 09:02:25,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 09:02:25,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 09:02:25,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 09:02:25,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:02:24" (1/3) ... [2022-11-21 09:02:25,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1765fbf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:02:25, skipping insertion in model container [2022-11-21 09:02:25,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:24" (2/3) ... [2022-11-21 09:02:25,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1765fbf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:02:25, skipping insertion in model container [2022-11-21 09:02:25,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:02:25" (3/3) ... [2022-11-21 09:02:25,529 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2022-11-21 09:02:25,540 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 09:02:25,555 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 09:02:25,555 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 09:02:25,555 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 09:02:25,677 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-21 09:02:25,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 286 places, 306 transitions, 636 flow [2022-11-21 09:02:25,873 INFO L130 PetriNetUnfolder]: 30/303 cut-off events. [2022-11-21 09:02:25,873 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-21 09:02:25,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 303 events. 30/303 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 236 event pairs, 0 based on Foata normal form. 0/272 useless extension candidates. Maximal degree in co-relation 201. Up to 3 conditions per place. [2022-11-21 09:02:25,879 INFO L82 GeneralOperation]: Start removeDead. Operand has 286 places, 306 transitions, 636 flow [2022-11-21 09:02:25,887 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 272 places, 292 transitions, 602 flow [2022-11-21 09:02:25,898 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 09:02:25,904 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;@7651b5a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 09:02:25,905 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-21 09:02:26,058 INFO L130 PetriNetUnfolder]: 30/291 cut-off events. [2022-11-21 09:02:26,058 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-21 09:02:26,058 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:02:26,059 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] [2022-11-21 09:02:26,060 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)] === [2022-11-21 09:02:26,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:26,066 INFO L85 PathProgramCache]: Analyzing trace with hash 749541122, now seen corresponding path program 1 times [2022-11-21 09:02:26,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:02:26,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919597421] [2022-11-21 09:02:26,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:26,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:02:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:26,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:02:26,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:02:26,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919597421] [2022-11-21 09:02:26,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919597421] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:02:26,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:02:26,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 09:02:26,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771184573] [2022-11-21 09:02:26,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:02:26,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 09:02:26,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:02:26,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 09:02:26,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 09:02:26,615 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 284 out of 306 [2022-11-21 09:02:26,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 292 transitions, 602 flow. Second operand has 2 states, 2 states have (on average 290.0) internal successors, (580), 2 states have internal predecessors, (580), 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) [2022-11-21 09:02:26,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:02:26,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 284 of 306 [2022-11-21 09:02:26,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:02:26,726 INFO L130 PetriNetUnfolder]: 15/277 cut-off events. [2022-11-21 09:02:26,726 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-11-21 09:02:26,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 277 events. 15/277 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 224 event pairs, 0 based on Foata normal form. 21/274 useless extension candidates. Maximal degree in co-relation 192. Up to 7 conditions per place. [2022-11-21 09:02:26,730 INFO L137 encePairwiseOnDemand]: 291/306 looper letters, 6 selfloop transitions, 0 changer transitions 9/277 dead transitions. [2022-11-21 09:02:26,731 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 277 transitions, 584 flow [2022-11-21 09:02:26,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 09:02:26,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-21 09:02:26,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 589 transitions. [2022-11-21 09:02:26,754 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9624183006535948 [2022-11-21 09:02:26,755 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 589 transitions. [2022-11-21 09:02:26,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 589 transitions. [2022-11-21 09:02:26,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:02:26,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 589 transitions. [2022-11-21 09:02:26,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 294.5) internal successors, (589), 2 states have internal predecessors, (589), 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) [2022-11-21 09:02:26,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 306.0) internal successors, (918), 3 states have internal predecessors, (918), 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) [2022-11-21 09:02:26,783 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 306.0) internal successors, (918), 3 states have internal predecessors, (918), 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) [2022-11-21 09:02:26,785 INFO L175 Difference]: Start difference. First operand has 272 places, 292 transitions, 602 flow. Second operand 2 states and 589 transitions. [2022-11-21 09:02:26,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 277 transitions, 584 flow [2022-11-21 09:02:26,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 277 transitions, 572 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-21 09:02:26,805 INFO L231 Difference]: Finished difference. Result has 267 places, 268 transitions, 542 flow [2022-11-21 09:02:26,807 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=542, PETRI_PLACES=267, PETRI_TRANSITIONS=268} [2022-11-21 09:02:26,814 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, -5 predicate places. [2022-11-21 09:02:26,814 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 268 transitions, 542 flow [2022-11-21 09:02:26,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 290.0) internal successors, (580), 2 states have internal predecessors, (580), 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) [2022-11-21 09:02:26,815 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:02:26,816 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] [2022-11-21 09:02:26,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 09:02:26,817 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)] === [2022-11-21 09:02:26,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:26,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1631454252, now seen corresponding path program 1 times [2022-11-21 09:02:26,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:02:26,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739683967] [2022-11-21 09:02:26,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:26,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:02:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:27,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:02:27,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:02:27,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739683967] [2022-11-21 09:02:27,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739683967] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:02:27,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:02:27,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 09:02:27,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243652612] [2022-11-21 09:02:27,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:02:27,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 09:02:27,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:02:27,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 09:02:27,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 09:02:27,572 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 306 [2022-11-21 09:02:27,574 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 268 transitions, 542 flow. Second operand has 5 states, 5 states have (on average 242.2) internal successors, (1211), 5 states have internal predecessors, (1211), 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) [2022-11-21 09:02:27,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:02:27,579 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 306 [2022-11-21 09:02:27,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:02:27,810 INFO L130 PetriNetUnfolder]: 14/272 cut-off events. [2022-11-21 09:02:27,811 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-21 09:02:27,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 272 events. 14/272 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 217 event pairs, 0 based on Foata normal form. 1/258 useless extension candidates. Maximal degree in co-relation 326. Up to 48 conditions per place. [2022-11-21 09:02:27,813 INFO L137 encePairwiseOnDemand]: 302/306 looper letters, 47 selfloop transitions, 0 changer transitions 4/271 dead transitions. [2022-11-21 09:02:27,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 271 transitions, 650 flow [2022-11-21 09:02:27,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 09:02:27,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 09:02:27,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1217 transitions. [2022-11-21 09:02:27,818 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7954248366013071 [2022-11-21 09:02:27,819 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1217 transitions. [2022-11-21 09:02:27,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1217 transitions. [2022-11-21 09:02:27,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:02:27,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1217 transitions. [2022-11-21 09:02:27,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 243.4) internal successors, (1217), 5 states have internal predecessors, (1217), 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) [2022-11-21 09:02:27,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 306.0) internal successors, (1836), 6 states have internal predecessors, (1836), 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) [2022-11-21 09:02:27,829 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 306.0) internal successors, (1836), 6 states have internal predecessors, (1836), 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) [2022-11-21 09:02:27,829 INFO L175 Difference]: Start difference. First operand has 267 places, 268 transitions, 542 flow. Second operand 5 states and 1217 transitions. [2022-11-21 09:02:27,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 271 transitions, 650 flow [2022-11-21 09:02:27,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 271 transitions, 650 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 09:02:27,840 INFO L231 Difference]: Finished difference. Result has 265 places, 267 transitions, 546 flow [2022-11-21 09:02:27,841 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=546, PETRI_PLACES=265, PETRI_TRANSITIONS=267} [2022-11-21 09:02:27,841 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, -7 predicate places. [2022-11-21 09:02:27,842 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 267 transitions, 546 flow [2022-11-21 09:02:27,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 242.2) internal successors, (1211), 5 states have internal predecessors, (1211), 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) [2022-11-21 09:02:27,843 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:02:27,843 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:02:27,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 09:02:27,844 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)] === [2022-11-21 09:02:27,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:27,846 INFO L85 PathProgramCache]: Analyzing trace with hash 882419116, now seen corresponding path program 1 times [2022-11-21 09:02:27,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:02:27,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299588905] [2022-11-21 09:02:27,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:27,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:02:27,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:28,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:02:28,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:02:28,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299588905] [2022-11-21 09:02:28,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299588905] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:02:28,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:02:28,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 09:02:28,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800124040] [2022-11-21 09:02:28,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:02:28,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 09:02:28,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:02:28,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 09:02:28,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-21 09:02:28,840 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 306 [2022-11-21 09:02:28,844 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 267 transitions, 546 flow. Second operand has 11 states, 11 states have (on average 217.27272727272728) internal successors, (2390), 11 states have internal predecessors, (2390), 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) [2022-11-21 09:02:28,844 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:02:28,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 306 [2022-11-21 09:02:28,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:02:29,965 INFO L130 PetriNetUnfolder]: 253/1391 cut-off events. [2022-11-21 09:02:29,965 INFO L131 PetriNetUnfolder]: For 56/72 co-relation queries the response was YES. [2022-11-21 09:02:29,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2005 conditions, 1391 events. 253/1391 cut-off events. For 56/72 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 7342 event pairs, 62 based on Foata normal form. 2/1247 useless extension candidates. Maximal degree in co-relation 1998. Up to 161 conditions per place. [2022-11-21 09:02:29,979 INFO L137 encePairwiseOnDemand]: 281/306 looper letters, 204 selfloop transitions, 26 changer transitions 9/430 dead transitions. [2022-11-21 09:02:29,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 430 transitions, 1378 flow [2022-11-21 09:02:29,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 09:02:29,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-21 09:02:29,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3866 transitions. [2022-11-21 09:02:29,988 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7431757016532103 [2022-11-21 09:02:29,989 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3866 transitions. [2022-11-21 09:02:29,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3866 transitions. [2022-11-21 09:02:29,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:02:29,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3866 transitions. [2022-11-21 09:02:30,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 227.41176470588235) internal successors, (3866), 17 states have internal predecessors, (3866), 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) [2022-11-21 09:02:30,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 306.0) internal successors, (5508), 18 states have internal predecessors, (5508), 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) [2022-11-21 09:02:30,014 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 306.0) internal successors, (5508), 18 states have internal predecessors, (5508), 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) [2022-11-21 09:02:30,014 INFO L175 Difference]: Start difference. First operand has 265 places, 267 transitions, 546 flow. Second operand 17 states and 3866 transitions. [2022-11-21 09:02:30,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 430 transitions, 1378 flow [2022-11-21 09:02:30,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 430 transitions, 1364 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-11-21 09:02:30,024 INFO L231 Difference]: Finished difference. Result has 287 places, 287 transitions, 723 flow [2022-11-21 09:02:30,024 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=723, PETRI_PLACES=287, PETRI_TRANSITIONS=287} [2022-11-21 09:02:30,025 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 15 predicate places. [2022-11-21 09:02:30,025 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 287 transitions, 723 flow [2022-11-21 09:02:30,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 217.27272727272728) internal successors, (2390), 11 states have internal predecessors, (2390), 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) [2022-11-21 09:02:30,027 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:02:30,027 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] [2022-11-21 09:02:30,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 09:02:30,028 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)] === [2022-11-21 09:02:30,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:30,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1695636344, now seen corresponding path program 1 times [2022-11-21 09:02:30,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:02:30,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788286934] [2022-11-21 09:02:30,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:30,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:02:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:30,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:02:30,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:02:30,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788286934] [2022-11-21 09:02:30,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788286934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:02:30,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:02:30,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 09:02:30,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34527152] [2022-11-21 09:02:30,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:02:30,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:02:30,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:02:30,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:02:30,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:02:30,305 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 306 [2022-11-21 09:02:30,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 287 transitions, 723 flow. Second operand has 6 states, 6 states have (on average 236.33333333333334) internal successors, (1418), 6 states have internal predecessors, (1418), 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) [2022-11-21 09:02:30,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:02:30,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 306 [2022-11-21 09:02:30,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:02:30,603 INFO L130 PetriNetUnfolder]: 46/843 cut-off events. [2022-11-21 09:02:30,603 INFO L131 PetriNetUnfolder]: For 76/86 co-relation queries the response was YES. [2022-11-21 09:02:30,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1194 conditions, 843 events. 46/843 cut-off events. For 76/86 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 3239 event pairs, 3 based on Foata normal form. 5/803 useless extension candidates. Maximal degree in co-relation 1177. Up to 154 conditions per place. [2022-11-21 09:02:30,610 INFO L137 encePairwiseOnDemand]: 300/306 looper letters, 54 selfloop transitions, 6 changer transitions 9/295 dead transitions. [2022-11-21 09:02:30,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 295 transitions, 893 flow [2022-11-21 09:02:30,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 09:02:30,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 09:02:30,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1426 transitions. [2022-11-21 09:02:30,615 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7766884531590414 [2022-11-21 09:02:30,615 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1426 transitions. [2022-11-21 09:02:30,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1426 transitions. [2022-11-21 09:02:30,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:02:30,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1426 transitions. [2022-11-21 09:02:30,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 237.66666666666666) internal successors, (1426), 6 states have internal predecessors, (1426), 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) [2022-11-21 09:02:30,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 306.0) internal successors, (2142), 7 states have internal predecessors, (2142), 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) [2022-11-21 09:02:30,625 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 306.0) internal successors, (2142), 7 states have internal predecessors, (2142), 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) [2022-11-21 09:02:30,625 INFO L175 Difference]: Start difference. First operand has 287 places, 287 transitions, 723 flow. Second operand 6 states and 1426 transitions. [2022-11-21 09:02:30,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 295 transitions, 893 flow [2022-11-21 09:02:30,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 295 transitions, 879 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-11-21 09:02:30,635 INFO L231 Difference]: Finished difference. Result has 286 places, 286 transitions, 725 flow [2022-11-21 09:02:30,636 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=725, PETRI_PLACES=286, PETRI_TRANSITIONS=286} [2022-11-21 09:02:30,637 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 14 predicate places. [2022-11-21 09:02:30,637 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 286 transitions, 725 flow [2022-11-21 09:02:30,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 236.33333333333334) internal successors, (1418), 6 states have internal predecessors, (1418), 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) [2022-11-21 09:02:30,638 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:02:30,639 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] [2022-11-21 09:02:30,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 09:02:30,639 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)] === [2022-11-21 09:02:30,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:30,640 INFO L85 PathProgramCache]: Analyzing trace with hash -883193550, now seen corresponding path program 1 times [2022-11-21 09:02:30,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:02:30,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657284580] [2022-11-21 09:02:30,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:30,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:02:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:31,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:02:31,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:02:31,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657284580] [2022-11-21 09:02:31,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657284580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:02:31,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:02:31,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 09:02:31,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678448642] [2022-11-21 09:02:31,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:02:31,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 09:02:31,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:02:31,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 09:02:31,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-21 09:02:31,039 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 306 [2022-11-21 09:02:31,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 286 transitions, 725 flow. Second operand has 8 states, 8 states have (on average 231.625) internal successors, (1853), 8 states have internal predecessors, (1853), 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) [2022-11-21 09:02:31,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:02:31,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 306 [2022-11-21 09:02:31,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:02:31,815 INFO L130 PetriNetUnfolder]: 293/1921 cut-off events. [2022-11-21 09:02:31,816 INFO L131 PetriNetUnfolder]: For 212/263 co-relation queries the response was YES. [2022-11-21 09:02:31,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2793 conditions, 1921 events. 293/1921 cut-off events. For 212/263 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 12064 event pairs, 113 based on Foata normal form. 13/1728 useless extension candidates. Maximal degree in co-relation 2776. Up to 242 conditions per place. [2022-11-21 09:02:31,831 INFO L137 encePairwiseOnDemand]: 292/306 looper letters, 112 selfloop transitions, 17 changer transitions 7/340 dead transitions. [2022-11-21 09:02:31,832 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 340 transitions, 1150 flow [2022-11-21 09:02:31,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 09:02:31,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-21 09:02:31,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2603 transitions. [2022-11-21 09:02:31,839 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.773321449792038 [2022-11-21 09:02:31,839 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2603 transitions. [2022-11-21 09:02:31,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2603 transitions. [2022-11-21 09:02:31,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:02:31,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2603 transitions. [2022-11-21 09:02:31,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 236.63636363636363) internal successors, (2603), 11 states have internal predecessors, (2603), 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) [2022-11-21 09:02:31,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 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) [2022-11-21 09:02:31,859 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 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) [2022-11-21 09:02:31,859 INFO L175 Difference]: Start difference. First operand has 286 places, 286 transitions, 725 flow. Second operand 11 states and 2603 transitions. [2022-11-21 09:02:31,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 340 transitions, 1150 flow [2022-11-21 09:02:31,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 340 transitions, 1132 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-21 09:02:31,875 INFO L231 Difference]: Finished difference. Result has 291 places, 289 transitions, 765 flow [2022-11-21 09:02:31,876 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=765, PETRI_PLACES=291, PETRI_TRANSITIONS=289} [2022-11-21 09:02:31,879 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 19 predicate places. [2022-11-21 09:02:31,879 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 289 transitions, 765 flow [2022-11-21 09:02:31,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 231.625) internal successors, (1853), 8 states have internal predecessors, (1853), 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) [2022-11-21 09:02:31,880 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:02:31,881 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] [2022-11-21 09:02:31,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 09:02:31,881 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)] === [2022-11-21 09:02:31,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:31,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1058484689, now seen corresponding path program 1 times [2022-11-21 09:02:31,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:02:31,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819370649] [2022-11-21 09:02:31,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:31,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:02:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:32,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:02:32,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:02:32,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819370649] [2022-11-21 09:02:32,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819370649] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:02:32,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593711100] [2022-11-21 09:02:32,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:32,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:02:32,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:02:32,318 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:02:32,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 09:02:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:32,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 09:02:32,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:02:33,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:02:33,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:02:33,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:02:33,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593711100] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-21 09:02:33,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:02:33,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 8] total 18 [2022-11-21 09:02:33,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385397298] [2022-11-21 09:02:33,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:02:33,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 09:02:33,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:02:33,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 09:02:33,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-11-21 09:02:33,702 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 306 [2022-11-21 09:02:33,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 289 transitions, 765 flow. Second operand has 8 states, 8 states have (on average 231.625) internal successors, (1853), 8 states have internal predecessors, (1853), 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) [2022-11-21 09:02:33,705 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:02:33,705 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 306 [2022-11-21 09:02:33,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:02:34,946 INFO L130 PetriNetUnfolder]: 598/3586 cut-off events. [2022-11-21 09:02:34,946 INFO L131 PetriNetUnfolder]: For 884/984 co-relation queries the response was YES. [2022-11-21 09:02:34,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5514 conditions, 3586 events. 598/3586 cut-off events. For 884/984 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 29292 event pairs, 189 based on Foata normal form. 0/3250 useless extension candidates. Maximal degree in co-relation 5497. Up to 436 conditions per place. [2022-11-21 09:02:34,972 INFO L137 encePairwiseOnDemand]: 290/306 looper letters, 115 selfloop transitions, 26 changer transitions 0/354 dead transitions. [2022-11-21 09:02:34,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 354 transitions, 1211 flow [2022-11-21 09:02:34,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 09:02:34,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-21 09:02:34,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3524 transitions. [2022-11-21 09:02:34,980 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7677559912854031 [2022-11-21 09:02:34,981 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3524 transitions. [2022-11-21 09:02:34,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3524 transitions. [2022-11-21 09:02:34,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:02:34,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3524 transitions. [2022-11-21 09:02:34,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 234.93333333333334) internal successors, (3524), 15 states have internal predecessors, (3524), 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) [2022-11-21 09:02:35,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 306.0) internal successors, (4896), 16 states have internal predecessors, (4896), 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) [2022-11-21 09:02:35,003 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 306.0) internal successors, (4896), 16 states have internal predecessors, (4896), 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) [2022-11-21 09:02:35,003 INFO L175 Difference]: Start difference. First operand has 291 places, 289 transitions, 765 flow. Second operand 15 states and 3524 transitions. [2022-11-21 09:02:35,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 354 transitions, 1211 flow [2022-11-21 09:02:35,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 354 transitions, 1198 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-21 09:02:35,014 INFO L231 Difference]: Finished difference. Result has 308 places, 301 transitions, 882 flow [2022-11-21 09:02:35,014 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=882, PETRI_PLACES=308, PETRI_TRANSITIONS=301} [2022-11-21 09:02:35,015 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 36 predicate places. [2022-11-21 09:02:35,015 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 301 transitions, 882 flow [2022-11-21 09:02:35,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 231.625) internal successors, (1853), 8 states have internal predecessors, (1853), 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) [2022-11-21 09:02:35,017 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:02:35,017 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:02:35,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-21 09:02:35,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-21 09:02:35,224 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)] === [2022-11-21 09:02:35,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:35,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1201685273, now seen corresponding path program 1 times [2022-11-21 09:02:35,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:02:35,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599823209] [2022-11-21 09:02:35,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:35,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:02:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:36,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 09:02:36,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:02:36,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599823209] [2022-11-21 09:02:36,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599823209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:02:36,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:02:36,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-21 09:02:36,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069985515] [2022-11-21 09:02:36,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:02:36,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 09:02:36,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:02:36,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 09:02:36,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-11-21 09:02:36,177 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 306 [2022-11-21 09:02:36,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 301 transitions, 882 flow. Second operand has 13 states, 13 states have (on average 197.07692307692307) internal successors, (2562), 13 states have internal predecessors, (2562), 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) [2022-11-21 09:02:36,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:02:36,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 306 [2022-11-21 09:02:36,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:02:38,059 INFO L130 PetriNetUnfolder]: 1156/5508 cut-off events. [2022-11-21 09:02:38,059 INFO L131 PetriNetUnfolder]: For 1774/1828 co-relation queries the response was YES. [2022-11-21 09:02:38,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9150 conditions, 5508 events. 1156/5508 cut-off events. For 1774/1828 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 50458 event pairs, 504 based on Foata normal form. 66/5176 useless extension candidates. Maximal degree in co-relation 9127. Up to 781 conditions per place. [2022-11-21 09:02:38,102 INFO L137 encePairwiseOnDemand]: 280/306 looper letters, 155 selfloop transitions, 26 changer transitions 12/379 dead transitions. [2022-11-21 09:02:38,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 379 transitions, 1494 flow [2022-11-21 09:02:38,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-21 09:02:38,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-21 09:02:38,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3794 transitions. [2022-11-21 09:02:38,112 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.652562779497764 [2022-11-21 09:02:38,112 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3794 transitions. [2022-11-21 09:02:38,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3794 transitions. [2022-11-21 09:02:38,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:02:38,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3794 transitions. [2022-11-21 09:02:38,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 199.68421052631578) internal successors, (3794), 19 states have internal predecessors, (3794), 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) [2022-11-21 09:02:38,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 306.0) internal successors, (6120), 20 states have internal predecessors, (6120), 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) [2022-11-21 09:02:38,142 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 306.0) internal successors, (6120), 20 states have internal predecessors, (6120), 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) [2022-11-21 09:02:38,143 INFO L175 Difference]: Start difference. First operand has 308 places, 301 transitions, 882 flow. Second operand 19 states and 3794 transitions. [2022-11-21 09:02:38,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 379 transitions, 1494 flow [2022-11-21 09:02:38,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 379 transitions, 1482 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 09:02:38,156 INFO L231 Difference]: Finished difference. Result has 328 places, 295 transitions, 897 flow [2022-11-21 09:02:38,156 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=897, PETRI_PLACES=328, PETRI_TRANSITIONS=295} [2022-11-21 09:02:38,157 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 56 predicate places. [2022-11-21 09:02:38,157 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 295 transitions, 897 flow [2022-11-21 09:02:38,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 197.07692307692307) internal successors, (2562), 13 states have internal predecessors, (2562), 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) [2022-11-21 09:02:38,158 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:02:38,159 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:02:38,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 09:02:38,159 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)] === [2022-11-21 09:02:38,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:38,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1962130267, now seen corresponding path program 1 times [2022-11-21 09:02:38,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:02:38,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184286289] [2022-11-21 09:02:38,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:38,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:02:38,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:38,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 09:02:38,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:02:38,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184286289] [2022-11-21 09:02:38,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184286289] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:02:38,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151431761] [2022-11-21 09:02:38,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:38,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:02:38,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:02:38,533 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:02:38,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 09:02:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:38,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 09:02:38,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:02:39,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 09:02:39,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:02:39,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 09:02:39,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151431761] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-21 09:02:39,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:02:39,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 8] total 18 [2022-11-21 09:02:39,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492992210] [2022-11-21 09:02:39,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:02:39,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 09:02:39,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:02:39,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 09:02:39,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-11-21 09:02:39,840 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 306 [2022-11-21 09:02:39,842 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 295 transitions, 897 flow. Second operand has 8 states, 8 states have (on average 231.75) internal successors, (1854), 8 states have internal predecessors, (1854), 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) [2022-11-21 09:02:39,842 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:02:39,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 306 [2022-11-21 09:02:39,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:02:40,623 INFO L130 PetriNetUnfolder]: 238/2036 cut-off events. [2022-11-21 09:02:40,623 INFO L131 PetriNetUnfolder]: For 785/856 co-relation queries the response was YES. [2022-11-21 09:02:40,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3199 conditions, 2036 events. 238/2036 cut-off events. For 785/856 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 13865 event pairs, 88 based on Foata normal form. 15/1904 useless extension candidates. Maximal degree in co-relation 3169. Up to 303 conditions per place. [2022-11-21 09:02:40,643 INFO L137 encePairwiseOnDemand]: 295/306 looper letters, 92 selfloop transitions, 17 changer transitions 6/325 dead transitions. [2022-11-21 09:02:40,643 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 325 transitions, 1209 flow [2022-11-21 09:02:40,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 09:02:40,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-21 09:02:40,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2591 transitions. [2022-11-21 09:02:40,651 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7697563874034462 [2022-11-21 09:02:40,652 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2591 transitions. [2022-11-21 09:02:40,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2591 transitions. [2022-11-21 09:02:40,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:02:40,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2591 transitions. [2022-11-21 09:02:40,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 235.54545454545453) internal successors, (2591), 11 states have internal predecessors, (2591), 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) [2022-11-21 09:02:40,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 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) [2022-11-21 09:02:40,671 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 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) [2022-11-21 09:02:40,672 INFO L175 Difference]: Start difference. First operand has 328 places, 295 transitions, 897 flow. Second operand 11 states and 2591 transitions. [2022-11-21 09:02:40,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 325 transitions, 1209 flow [2022-11-21 09:02:40,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 325 transitions, 1113 flow, removed 23 selfloop flow, removed 22 redundant places. [2022-11-21 09:02:40,686 INFO L231 Difference]: Finished difference. Result has 313 places, 289 transitions, 833 flow [2022-11-21 09:02:40,686 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=783, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=833, PETRI_PLACES=313, PETRI_TRANSITIONS=289} [2022-11-21 09:02:40,689 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 41 predicate places. [2022-11-21 09:02:40,689 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 289 transitions, 833 flow [2022-11-21 09:02:40,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 231.75) internal successors, (1854), 8 states have internal predecessors, (1854), 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) [2022-11-21 09:02:40,690 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:02:40,691 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:02:40,698 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-21 09:02:40,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:02:40,898 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)] === [2022-11-21 09:02:40,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:40,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1979066002, now seen corresponding path program 1 times [2022-11-21 09:02:40,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:02:40,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555885787] [2022-11-21 09:02:40,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:40,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:02:41,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:41,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 09:02:41,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:02:41,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555885787] [2022-11-21 09:02:41,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555885787] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:02:41,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:02:41,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 09:02:41,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009492815] [2022-11-21 09:02:41,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:02:41,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:02:41,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:02:41,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:02:41,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:02:41,278 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 306 [2022-11-21 09:02:41,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 289 transitions, 833 flow. Second operand has 6 states, 6 states have (on average 236.33333333333334) internal successors, (1418), 6 states have internal predecessors, (1418), 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) [2022-11-21 09:02:41,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:02:41,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 306 [2022-11-21 09:02:41,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:02:41,718 INFO L130 PetriNetUnfolder]: 42/1202 cut-off events. [2022-11-21 09:02:41,719 INFO L131 PetriNetUnfolder]: For 327/342 co-relation queries the response was YES. [2022-11-21 09:02:41,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1926 conditions, 1202 events. 42/1202 cut-off events. For 327/342 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 6726 event pairs, 3 based on Foata normal form. 12/1157 useless extension candidates. Maximal degree in co-relation 1900. Up to 281 conditions per place. [2022-11-21 09:02:41,724 INFO L137 encePairwiseOnDemand]: 300/306 looper letters, 52 selfloop transitions, 5 changer transitions 7/295 dead transitions. [2022-11-21 09:02:41,725 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 295 transitions, 984 flow [2022-11-21 09:02:41,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 09:02:41,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 09:02:41,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1426 transitions. [2022-11-21 09:02:41,728 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7766884531590414 [2022-11-21 09:02:41,729 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1426 transitions. [2022-11-21 09:02:41,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1426 transitions. [2022-11-21 09:02:41,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:02:41,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1426 transitions. [2022-11-21 09:02:41,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 237.66666666666666) internal successors, (1426), 6 states have internal predecessors, (1426), 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) [2022-11-21 09:02:41,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 306.0) internal successors, (2142), 7 states have internal predecessors, (2142), 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) [2022-11-21 09:02:41,737 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 306.0) internal successors, (2142), 7 states have internal predecessors, (2142), 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) [2022-11-21 09:02:41,737 INFO L175 Difference]: Start difference. First operand has 313 places, 289 transitions, 833 flow. Second operand 6 states and 1426 transitions. [2022-11-21 09:02:41,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 295 transitions, 984 flow [2022-11-21 09:02:41,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 295 transitions, 934 flow, removed 13 selfloop flow, removed 12 redundant places. [2022-11-21 09:02:41,745 INFO L231 Difference]: Finished difference. Result has 306 places, 288 transitions, 797 flow [2022-11-21 09:02:41,746 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=783, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=797, PETRI_PLACES=306, PETRI_TRANSITIONS=288} [2022-11-21 09:02:41,747 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 34 predicate places. [2022-11-21 09:02:41,747 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 288 transitions, 797 flow [2022-11-21 09:02:41,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 236.33333333333334) internal successors, (1418), 6 states have internal predecessors, (1418), 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) [2022-11-21 09:02:41,748 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:02:41,748 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:02:41,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 09:02:41,749 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)] === [2022-11-21 09:02:41,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:41,749 INFO L85 PathProgramCache]: Analyzing trace with hash -809134671, now seen corresponding path program 1 times [2022-11-21 09:02:41,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:02:41,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628326935] [2022-11-21 09:02:41,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:41,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:02:41,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:42,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 09:02:42,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:02:42,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628326935] [2022-11-21 09:02:42,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628326935] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:02:42,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690291556] [2022-11-21 09:02:42,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:42,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:02:42,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:02:42,108 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:02:42,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 09:02:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:42,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 09:02:42,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:02:42,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 09:02:42,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:02:42,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690291556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:02:42,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 09:02:42,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-11-21 09:02:42,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522116468] [2022-11-21 09:02:42,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:02:42,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 09:02:42,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:02:42,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 09:02:42,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-11-21 09:02:42,811 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 306 [2022-11-21 09:02:42,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 288 transitions, 797 flow. Second operand has 8 states, 8 states have (on average 232.625) internal successors, (1861), 8 states have internal predecessors, (1861), 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) [2022-11-21 09:02:42,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:02:42,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 306 [2022-11-21 09:02:42,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:02:43,861 INFO L130 PetriNetUnfolder]: 862/3853 cut-off events. [2022-11-21 09:02:43,861 INFO L131 PetriNetUnfolder]: For 1476/1522 co-relation queries the response was YES. [2022-11-21 09:02:43,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6284 conditions, 3853 events. 862/3853 cut-off events. For 1476/1522 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 33379 event pairs, 297 based on Foata normal form. 34/3487 useless extension candidates. Maximal degree in co-relation 6259. Up to 664 conditions per place. [2022-11-21 09:02:43,887 INFO L137 encePairwiseOnDemand]: 294/306 looper letters, 86 selfloop transitions, 8 changer transitions 12/321 dead transitions. [2022-11-21 09:02:43,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 321 transitions, 1093 flow [2022-11-21 09:02:43,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 09:02:43,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 09:02:43,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2136 transitions. [2022-11-21 09:02:43,893 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.775599128540305 [2022-11-21 09:02:43,893 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2136 transitions. [2022-11-21 09:02:43,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2136 transitions. [2022-11-21 09:02:43,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:02:43,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2136 transitions. [2022-11-21 09:02:43,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 237.33333333333334) internal successors, (2136), 9 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) [2022-11-21 09:02:43,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 306.0) internal successors, (3060), 10 states have internal predecessors, (3060), 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) [2022-11-21 09:02:43,907 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 306.0) internal successors, (3060), 10 states have internal predecessors, (3060), 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) [2022-11-21 09:02:43,907 INFO L175 Difference]: Start difference. First operand has 306 places, 288 transitions, 797 flow. Second operand 9 states and 2136 transitions. [2022-11-21 09:02:43,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 321 transitions, 1093 flow [2022-11-21 09:02:43,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 321 transitions, 1077 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-21 09:02:43,918 INFO L231 Difference]: Finished difference. Result has 309 places, 289 transitions, 811 flow [2022-11-21 09:02:43,919 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=781, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=811, PETRI_PLACES=309, PETRI_TRANSITIONS=289} [2022-11-21 09:02:43,920 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 37 predicate places. [2022-11-21 09:02:43,920 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 289 transitions, 811 flow [2022-11-21 09:02:43,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 232.625) internal successors, (1861), 8 states have internal predecessors, (1861), 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) [2022-11-21 09:02:43,921 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:02:43,922 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:02:43,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 09:02:44,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:02:44,133 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)] === [2022-11-21 09:02:44,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:44,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1355902173, now seen corresponding path program 1 times [2022-11-21 09:02:44,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:02:44,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022915763] [2022-11-21 09:02:44,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:44,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:02:44,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:44,479 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 09:02:44,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:02:44,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022915763] [2022-11-21 09:02:44,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022915763] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:02:44,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351368917] [2022-11-21 09:02:44,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:44,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:02:44,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:02:44,482 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:02:44,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 09:02:44,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:44,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 09:02:44,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:02:45,375 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 09:02:45,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:02:46,142 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 09:02:46,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351368917] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-21 09:02:46,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:02:46,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10, 11] total 25 [2022-11-21 09:02:46,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496311510] [2022-11-21 09:02:46,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:02:46,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 09:02:46,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:02:46,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 09:02:46,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2022-11-21 09:02:46,149 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 306 [2022-11-21 09:02:46,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 289 transitions, 811 flow. Second operand has 11 states, 11 states have (on average 222.8181818181818) internal successors, (2451), 11 states have internal predecessors, (2451), 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) [2022-11-21 09:02:46,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:02:46,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 306 [2022-11-21 09:02:46,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:02:47,429 INFO L130 PetriNetUnfolder]: 1146/4657 cut-off events. [2022-11-21 09:02:47,429 INFO L131 PetriNetUnfolder]: For 2128/2253 co-relation queries the response was YES. [2022-11-21 09:02:47,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8152 conditions, 4657 events. 1146/4657 cut-off events. For 2128/2253 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 41337 event pairs, 350 based on Foata normal form. 60/4376 useless extension candidates. Maximal degree in co-relation 8127. Up to 664 conditions per place. [2022-11-21 09:02:47,558 INFO L137 encePairwiseOnDemand]: 290/306 looper letters, 129 selfloop transitions, 13 changer transitions 6/351 dead transitions. [2022-11-21 09:02:47,559 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 351 transitions, 1315 flow [2022-11-21 09:02:47,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 09:02:47,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-21 09:02:47,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3392 transitions. [2022-11-21 09:02:47,575 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7389978213507625 [2022-11-21 09:02:47,575 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3392 transitions. [2022-11-21 09:02:47,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3392 transitions. [2022-11-21 09:02:47,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:02:47,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3392 transitions. [2022-11-21 09:02:47,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 226.13333333333333) internal successors, (3392), 15 states have internal predecessors, (3392), 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) [2022-11-21 09:02:47,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 306.0) internal successors, (4896), 16 states have internal predecessors, (4896), 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) [2022-11-21 09:02:47,594 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 306.0) internal successors, (4896), 16 states have internal predecessors, (4896), 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) [2022-11-21 09:02:47,595 INFO L175 Difference]: Start difference. First operand has 309 places, 289 transitions, 811 flow. Second operand 15 states and 3392 transitions. [2022-11-21 09:02:47,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 351 transitions, 1315 flow [2022-11-21 09:02:47,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 351 transitions, 1289 flow, removed 8 selfloop flow, removed 6 redundant places. [2022-11-21 09:02:47,609 INFO L231 Difference]: Finished difference. Result has 321 places, 291 transitions, 843 flow [2022-11-21 09:02:47,612 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=795, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=843, PETRI_PLACES=321, PETRI_TRANSITIONS=291} [2022-11-21 09:02:47,616 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 49 predicate places. [2022-11-21 09:02:47,617 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 291 transitions, 843 flow [2022-11-21 09:02:47,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 222.8181818181818) internal successors, (2451), 11 states have internal predecessors, (2451), 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) [2022-11-21 09:02:47,631 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:02:47,631 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:02:47,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 09:02:47,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:02:47,842 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)] === [2022-11-21 09:02:47,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:47,842 INFO L85 PathProgramCache]: Analyzing trace with hash -2003613987, now seen corresponding path program 1 times [2022-11-21 09:02:47,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:02:47,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533119590] [2022-11-21 09:02:47,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:47,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:02:47,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:48,227 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 09:02:48,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:02:48,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533119590] [2022-11-21 09:02:48,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533119590] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:02:48,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495790479] [2022-11-21 09:02:48,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:48,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:02:48,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:02:48,230 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:02:48,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 09:02:48,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:48,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 09:02:48,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:02:49,040 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 09:02:49,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:02:49,407 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 09:02:49,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495790479] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-21 09:02:49,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:02:49,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 8] total 18 [2022-11-21 09:02:49,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088076251] [2022-11-21 09:02:49,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:02:49,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 09:02:49,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:02:49,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 09:02:49,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-11-21 09:02:49,413 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 306 [2022-11-21 09:02:49,415 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 291 transitions, 843 flow. Second operand has 8 states, 8 states have (on average 232.75) internal successors, (1862), 8 states have internal predecessors, (1862), 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) [2022-11-21 09:02:49,415 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:02:49,415 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 306 [2022-11-21 09:02:49,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:02:50,615 INFO L130 PetriNetUnfolder]: 827/4706 cut-off events. [2022-11-21 09:02:50,616 INFO L131 PetriNetUnfolder]: For 1984/2120 co-relation queries the response was YES. [2022-11-21 09:02:50,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7773 conditions, 4706 events. 827/4706 cut-off events. For 1984/2120 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 43211 event pairs, 320 based on Foata normal form. 96/4450 useless extension candidates. Maximal degree in co-relation 7744. Up to 632 conditions per place. [2022-11-21 09:02:50,638 INFO L137 encePairwiseOnDemand]: 291/306 looper letters, 92 selfloop transitions, 19 changer transitions 0/330 dead transitions. [2022-11-21 09:02:50,639 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 330 transitions, 1185 flow [2022-11-21 09:02:50,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 09:02:50,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-21 09:02:50,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3039 transitions. [2022-11-21 09:02:50,644 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7639517345399698 [2022-11-21 09:02:50,644 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3039 transitions. [2022-11-21 09:02:50,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3039 transitions. [2022-11-21 09:02:50,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:02:50,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3039 transitions. [2022-11-21 09:02:50,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 233.76923076923077) internal successors, (3039), 13 states have internal predecessors, (3039), 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) [2022-11-21 09:02:50,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 306.0) internal successors, (4284), 14 states have internal predecessors, (4284), 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) [2022-11-21 09:02:50,658 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 306.0) internal successors, (4284), 14 states have internal predecessors, (4284), 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) [2022-11-21 09:02:50,658 INFO L175 Difference]: Start difference. First operand has 321 places, 291 transitions, 843 flow. Second operand 13 states and 3039 transitions. [2022-11-21 09:02:50,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 330 transitions, 1185 flow [2022-11-21 09:02:50,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 330 transitions, 1151 flow, removed 7 selfloop flow, removed 12 redundant places. [2022-11-21 09:02:50,670 INFO L231 Difference]: Finished difference. Result has 322 places, 299 transitions, 898 flow [2022-11-21 09:02:50,671 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=815, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=898, PETRI_PLACES=322, PETRI_TRANSITIONS=299} [2022-11-21 09:02:50,671 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 50 predicate places. [2022-11-21 09:02:50,672 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 299 transitions, 898 flow [2022-11-21 09:02:50,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 232.75) internal successors, (1862), 8 states have internal predecessors, (1862), 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) [2022-11-21 09:02:50,673 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:02:50,673 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:02:50,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 09:02:50,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-21 09:02:50,880 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)] === [2022-11-21 09:02:50,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:50,881 INFO L85 PathProgramCache]: Analyzing trace with hash -502553974, now seen corresponding path program 1 times [2022-11-21 09:02:50,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:02:50,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161658546] [2022-11-21 09:02:50,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:50,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:02:50,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:51,320 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 09:02:51,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:02:51,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161658546] [2022-11-21 09:02:51,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161658546] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:02:51,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048270058] [2022-11-21 09:02:51,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:51,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:02:51,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:02:51,323 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:02:51,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 09:02:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:51,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 09:02:51,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:02:52,354 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 09:02:52,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:02:53,306 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 09:02:53,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048270058] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-21 09:02:53,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:02:53,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10, 11] total 27 [2022-11-21 09:02:53,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261564424] [2022-11-21 09:02:53,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:02:53,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 09:02:53,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:02:53,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 09:02:53,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2022-11-21 09:02:53,311 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 306 [2022-11-21 09:02:53,312 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 299 transitions, 898 flow. Second operand has 11 states, 11 states have (on average 222.9090909090909) internal successors, (2452), 11 states have internal predecessors, (2452), 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) [2022-11-21 09:02:53,312 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:02:53,312 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 306 [2022-11-21 09:02:53,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:02:54,730 INFO L130 PetriNetUnfolder]: 1240/6440 cut-off events. [2022-11-21 09:02:54,731 INFO L131 PetriNetUnfolder]: For 4064/4287 co-relation queries the response was YES. [2022-11-21 09:02:54,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11743 conditions, 6440 events. 1240/6440 cut-off events. For 4064/4287 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 62411 event pairs, 444 based on Foata normal form. 161/6257 useless extension candidates. Maximal degree in co-relation 11715. Up to 956 conditions per place. [2022-11-21 09:02:54,777 INFO L137 encePairwiseOnDemand]: 292/306 looper letters, 143 selfloop transitions, 12 changer transitions 9/370 dead transitions. [2022-11-21 09:02:54,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 370 transitions, 1506 flow [2022-11-21 09:02:54,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 09:02:54,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-21 09:02:54,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2956 transitions. [2022-11-21 09:02:54,782 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.743086978381096 [2022-11-21 09:02:54,783 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2956 transitions. [2022-11-21 09:02:54,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2956 transitions. [2022-11-21 09:02:54,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:02:54,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2956 transitions. [2022-11-21 09:02:54,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 227.3846153846154) internal successors, (2956), 13 states have internal predecessors, (2956), 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) [2022-11-21 09:02:54,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 306.0) internal successors, (4284), 14 states have internal predecessors, (4284), 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) [2022-11-21 09:02:54,797 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 306.0) internal successors, (4284), 14 states have internal predecessors, (4284), 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) [2022-11-21 09:02:54,798 INFO L175 Difference]: Start difference. First operand has 322 places, 299 transitions, 898 flow. Second operand 13 states and 2956 transitions. [2022-11-21 09:02:54,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 370 transitions, 1506 flow [2022-11-21 09:02:54,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 370 transitions, 1490 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-21 09:02:54,819 INFO L231 Difference]: Finished difference. Result has 335 places, 301 transitions, 929 flow [2022-11-21 09:02:54,819 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=929, PETRI_PLACES=335, PETRI_TRANSITIONS=301} [2022-11-21 09:02:54,820 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 63 predicate places. [2022-11-21 09:02:54,820 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 301 transitions, 929 flow [2022-11-21 09:02:54,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 222.9090909090909) internal successors, (2452), 11 states have internal predecessors, (2452), 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) [2022-11-21 09:02:54,821 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:02:54,821 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:02:54,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 09:02:55,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-21 09:02:55,029 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)] === [2022-11-21 09:02:55,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:02:55,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1578146979, now seen corresponding path program 1 times [2022-11-21 09:02:55,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:02:55,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702706973] [2022-11-21 09:02:55,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:55,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:02:55,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:57,565 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 09:02:57,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:02:57,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702706973] [2022-11-21 09:02:57,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702706973] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:02:57,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753728741] [2022-11-21 09:02:57,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:02:57,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:02:57,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:02:57,568 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:02:57,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 09:02:57,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:02:57,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-21 09:02:57,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:02:59,827 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-21 09:02:59,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-11-21 09:02:59,856 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 09:02:59,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:03:00,676 INFO L321 Elim1Store]: treesize reduction 26, result has 89.2 percent of original size [2022-11-21 09:03:00,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 226 [2022-11-21 09:03:02,624 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 09:03:02,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753728741] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:03:02,624 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 09:03:02,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 28, 13] total 42 [2022-11-21 09:03:02,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801929734] [2022-11-21 09:03:02,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 09:03:02,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-21 09:03:02,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:03:02,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-21 09:03:02,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1504, Unknown=0, NotChecked=0, Total=1722 [2022-11-21 09:03:02,634 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 306 [2022-11-21 09:03:02,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 301 transitions, 929 flow. Second operand has 42 states, 42 states have (on average 194.76190476190476) internal successors, (8180), 42 states have internal predecessors, (8180), 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) [2022-11-21 09:03:02,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:03:02,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 306 [2022-11-21 09:03:02,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:03:48,614 INFO L130 PetriNetUnfolder]: 141742/222454 cut-off events. [2022-11-21 09:03:48,614 INFO L131 PetriNetUnfolder]: For 176384/176384 co-relation queries the response was YES. [2022-11-21 09:03:49,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518275 conditions, 222454 events. 141742/222454 cut-off events. For 176384/176384 co-relation queries the response was YES. Maximal size of possible extension queue 6388. Compared 2074084 event pairs, 16534 based on Foata normal form. 0/208440 useless extension candidates. Maximal degree in co-relation 518240. Up to 57165 conditions per place. [2022-11-21 09:03:50,513 INFO L137 encePairwiseOnDemand]: 256/306 looper letters, 1658 selfloop transitions, 485 changer transitions 75/2402 dead transitions. [2022-11-21 09:03:50,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 2402 transitions, 11929 flow [2022-11-21 09:03:50,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-11-21 09:03:50,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2022-11-21 09:03:50,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 26998 transitions. [2022-11-21 09:03:50,552 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6786827551533434 [2022-11-21 09:03:50,552 INFO L72 ComplementDD]: Start complementDD. Operand 130 states and 26998 transitions. [2022-11-21 09:03:50,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 130 states and 26998 transitions. [2022-11-21 09:03:50,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:03:50,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 130 states and 26998 transitions. [2022-11-21 09:03:50,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 131 states, 130 states have (on average 207.6769230769231) internal successors, (26998), 130 states have internal predecessors, (26998), 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) [2022-11-21 09:03:50,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 131 states, 131 states have (on average 306.0) internal successors, (40086), 131 states have internal predecessors, (40086), 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) [2022-11-21 09:03:50,657 INFO L81 ComplementDD]: Finished complementDD. Result has 131 states, 131 states have (on average 306.0) internal successors, (40086), 131 states have internal predecessors, (40086), 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) [2022-11-21 09:03:50,657 INFO L175 Difference]: Start difference. First operand has 335 places, 301 transitions, 929 flow. Second operand 130 states and 26998 transitions. [2022-11-21 09:03:50,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 2402 transitions, 11929 flow [2022-11-21 09:03:54,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 2402 transitions, 11869 flow, removed 9 selfloop flow, removed 10 redundant places. [2022-11-21 09:03:54,591 INFO L231 Difference]: Finished difference. Result has 547 places, 802 transitions, 5035 flow [2022-11-21 09:03:54,592 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=130, PETRI_FLOW=5035, PETRI_PLACES=547, PETRI_TRANSITIONS=802} [2022-11-21 09:03:54,592 INFO L288 CegarLoopForPetriNet]: 272 programPoint places, 275 predicate places. [2022-11-21 09:03:54,593 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 802 transitions, 5035 flow [2022-11-21 09:03:54,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 194.76190476190476) internal successors, (8180), 42 states have internal predecessors, (8180), 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) [2022-11-21 09:03:54,594 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:03:54,595 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:03:54,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-21 09:03:54,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_309d84ce-ac90-4de1-9591-3ce4903e6dff/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-21 09:03:54,804 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 09:03:54,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:03:54,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1243147699, now seen corresponding path program 2 times [2022-11-21 09:03:54,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:03:54,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198096680] [2022-11-21 09:03:54,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:03:54,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:03:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:03:57,700 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 09:03:57,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:03:57,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198096680] [2022-11-21 09:03:57,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198096680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:03:57,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:03:57,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-11-21 09:03:57,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066644260] [2022-11-21 09:03:57,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:03:57,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-21 09:03:57,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:03:57,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-21 09:03:57,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=658, Unknown=0, NotChecked=0, Total=812 [2022-11-21 09:03:57,706 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 306 [2022-11-21 09:03:57,711 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 802 transitions, 5035 flow. Second operand has 29 states, 29 states have (on average 193.79310344827587) internal successors, (5620), 29 states have internal predecessors, (5620), 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) [2022-11-21 09:03:57,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:03:57,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 306 [2022-11-21 09:03:57,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand