./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/rfi003_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb9e45-a486-4822-a39b-fdb8357b326e/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb9e45-a486-4822-a39b-fdb8357b326e/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb9e45-a486-4822-a39b-fdb8357b326e/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb9e45-a486-4822-a39b-fdb8357b326e/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/rfi003_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb9e45-a486-4822-a39b-fdb8357b326e/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb9e45-a486-4822-a39b-fdb8357b326e/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 503cbc793fb2369a7e5308c15a611fe38888f935ec98bb5d473194a0a60e31e4 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:55:42,334 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:55:42,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:55:42,371 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:55:42,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:55:42,373 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:55:42,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:55:42,377 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:55:42,378 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:55:42,379 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:55:42,381 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:55:42,382 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:55:42,383 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:55:42,384 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:55:42,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:55:42,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:55:42,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:55:42,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:55:42,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:55:42,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:55:42,393 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:55:42,399 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:55:42,401 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:55:42,404 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:55:42,408 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:55:42,416 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:55:42,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:55:42,418 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:55:42,418 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:55:42,419 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:55:42,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:55:42,420 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:55:42,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:55:42,423 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:55:42,425 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:55:42,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:55:42,427 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:55:42,427 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:55:42,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:55:42,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:55:42,429 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:55:42,430 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb9e45-a486-4822-a39b-fdb8357b326e/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:55:42,469 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:55:42,471 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:55:42,471 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:55:42,472 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:55:42,473 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:55:42,473 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:55:42,473 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:55:42,474 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:55:42,474 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:55:42,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:55:42,475 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:55:42,475 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:55:42,476 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:55:42,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:55:42,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:55:42,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:55:42,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:55:42,477 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:55:42,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:55:42,477 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:55:42,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:55:42,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:55:42,478 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:55:42,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:55:42,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:55:42,479 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:55:42,480 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:55:42,480 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:55:42,481 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:55:42,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:55:42,481 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:55:42,481 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:55:42,482 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:55:42,482 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_cafb9e45-a486-4822-a39b-fdb8357b326e/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb9e45-a486-4822-a39b-fdb8357b326e/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503cbc793fb2369a7e5308c15a611fe38888f935ec98bb5d473194a0a60e31e4 [2022-11-18 20:55:42,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:55:42,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:55:42,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:55:42,813 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:55:42,814 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:55:42,815 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb9e45-a486-4822-a39b-fdb8357b326e/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread-wmm/rfi003_tso.i [2022-11-18 20:55:42,903 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb9e45-a486-4822-a39b-fdb8357b326e/bin/uautomizer-TMbwUNV5ro/data/ee9c7e5f0/5d0512ca7aee4210bcff141968fbc80a/FLAG02e222ad8 [2022-11-18 20:55:43,466 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:55:43,467 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb9e45-a486-4822-a39b-fdb8357b326e/sv-benchmarks/c/pthread-wmm/rfi003_tso.i [2022-11-18 20:55:43,492 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb9e45-a486-4822-a39b-fdb8357b326e/bin/uautomizer-TMbwUNV5ro/data/ee9c7e5f0/5d0512ca7aee4210bcff141968fbc80a/FLAG02e222ad8 [2022-11-18 20:55:43,762 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb9e45-a486-4822-a39b-fdb8357b326e/bin/uautomizer-TMbwUNV5ro/data/ee9c7e5f0/5d0512ca7aee4210bcff141968fbc80a [2022-11-18 20:55:43,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:55:43,769 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:55:43,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:55:43,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:55:43,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:55:43,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:55:43" (1/1) ... [2022-11-18 20:55:43,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a6c4c0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:43, skipping insertion in model container [2022-11-18 20:55:43,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:55:43" (1/1) ... [2022-11-18 20:55:43,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:55:43,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:55:44,121 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb9e45-a486-4822-a39b-fdb8357b326e/sv-benchmarks/c/pthread-wmm/rfi003_tso.i[944,957] [2022-11-18 20:55:44,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:55:44,437 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:55:44,455 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb9e45-a486-4822-a39b-fdb8357b326e/sv-benchmarks/c/pthread-wmm/rfi003_tso.i[944,957] [2022-11-18 20:55:44,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:55:44,562 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:55:44,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:44 WrapperNode [2022-11-18 20:55:44,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:55:44,564 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:55:44,564 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:55:44,564 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:55:44,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:44" (1/1) ... [2022-11-18 20:55:44,587 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:44" (1/1) ... [2022-11-18 20:55:44,619 INFO L138 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 165 [2022-11-18 20:55:44,619 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:55:44,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:55:44,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:55:44,620 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:55:44,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:44" (1/1) ... [2022-11-18 20:55:44,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:44" (1/1) ... [2022-11-18 20:55:44,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:44" (1/1) ... [2022-11-18 20:55:44,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:44" (1/1) ... [2022-11-18 20:55:44,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:44" (1/1) ... [2022-11-18 20:55:44,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:44" (1/1) ... [2022-11-18 20:55:44,659 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:44" (1/1) ... [2022-11-18 20:55:44,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:44" (1/1) ... [2022-11-18 20:55:44,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:55:44,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:55:44,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:55:44,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:55:44,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:44" (1/1) ... [2022-11-18 20:55:44,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:55:44,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb9e45-a486-4822-a39b-fdb8357b326e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:55:44,733 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb9e45-a486-4822-a39b-fdb8357b326e/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:55:44,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb9e45-a486-4822-a39b-fdb8357b326e/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:55:44,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:55:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 20:55:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:55:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:55:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:55:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-18 20:55:44,780 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-18 20:55:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-18 20:55:44,782 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-18 20:55:44,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:55:44,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 20:55:44,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:55:44,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:55:44,788 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:55:44,915 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:55:44,918 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:55:45,370 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:55:45,678 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:55:45,679 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 20:55:45,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:55:45 BoogieIcfgContainer [2022-11-18 20:55:45,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:55:45,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:55:45,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:55:45,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:55:45,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:55:43" (1/3) ... [2022-11-18 20:55:45,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f89e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:55:45, skipping insertion in model container [2022-11-18 20:55:45,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:55:44" (2/3) ... [2022-11-18 20:55:45,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f89e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:55:45, skipping insertion in model container [2022-11-18 20:55:45,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:55:45" (3/3) ... [2022-11-18 20:55:45,694 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi003_tso.i [2022-11-18 20:55:45,703 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:55:45,714 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:55:45,714 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-18 20:55:45,714 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:55:45,798 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 20:55:45,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 99 transitions, 208 flow [2022-11-18 20:55:45,887 INFO L130 PetriNetUnfolder]: 2/97 cut-off events. [2022-11-18 20:55:45,887 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:55:45,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 97 events. 2/97 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2022-11-18 20:55:45,892 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 99 transitions, 208 flow [2022-11-18 20:55:45,896 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 97 transitions, 200 flow [2022-11-18 20:55:45,905 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:55:45,914 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;@681f3124, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:55:45,914 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-18 20:55:45,942 INFO L130 PetriNetUnfolder]: 0/60 cut-off events. [2022-11-18 20:55:45,942 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:55:45,942 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:55:45,943 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] [2022-11-18 20:55:45,944 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:55:45,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:45,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1184859862, now seen corresponding path program 1 times [2022-11-18 20:55:45,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:45,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143125796] [2022-11-18 20:55:45,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:45,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:46,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:55:46,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:46,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143125796] [2022-11-18 20:55:46,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143125796] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:55:46,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:55:46,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:55:46,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231676486] [2022-11-18 20:55:46,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:55:46,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:55:46,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:46,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:55:46,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:55:46,758 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 99 [2022-11-18 20:55:46,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 97 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:46,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:55:46,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 99 [2022-11-18 20:55:46,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:55:46,969 INFO L130 PetriNetUnfolder]: 54/432 cut-off events. [2022-11-18 20:55:46,970 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 20:55:46,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 432 events. 54/432 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2383 event pairs, 24 based on Foata normal form. 21/424 useless extension candidates. Maximal degree in co-relation 498. Up to 85 conditions per place. [2022-11-18 20:55:46,981 INFO L137 encePairwiseOnDemand]: 94/99 looper letters, 13 selfloop transitions, 2 changer transitions 0/97 dead transitions. [2022-11-18 20:55:46,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 97 transitions, 230 flow [2022-11-18 20:55:46,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:55:46,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:55:46,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2022-11-18 20:55:46,995 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9158249158249159 [2022-11-18 20:55:46,996 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 272 transitions. [2022-11-18 20:55:46,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 272 transitions. [2022-11-18 20:55:46,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:55:47,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 272 transitions. [2022-11-18 20:55:47,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:47,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:47,010 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:47,012 INFO L175 Difference]: Start difference. First operand has 102 places, 97 transitions, 200 flow. Second operand 3 states and 272 transitions. [2022-11-18 20:55:47,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 97 transitions, 230 flow [2022-11-18 20:55:47,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 97 transitions, 228 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:55:47,022 INFO L231 Difference]: Finished difference. Result has 100 places, 93 transitions, 194 flow [2022-11-18 20:55:47,024 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=100, PETRI_TRANSITIONS=93} [2022-11-18 20:55:47,030 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, -2 predicate places. [2022-11-18 20:55:47,031 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 93 transitions, 194 flow [2022-11-18 20:55:47,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:47,032 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:55:47,033 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] [2022-11-18 20:55:47,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:55:47,033 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:55:47,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:47,035 INFO L85 PathProgramCache]: Analyzing trace with hash -2058558514, now seen corresponding path program 1 times [2022-11-18 20:55:47,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:47,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754299091] [2022-11-18 20:55:47,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:47,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:47,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:48,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:55:48,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:48,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754299091] [2022-11-18 20:55:48,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754299091] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:55:48,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:55:48,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:55:48,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683688181] [2022-11-18 20:55:48,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:55:48,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:55:48,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:48,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:55:48,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:55:48,405 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 99 [2022-11-18 20:55:48,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 93 transitions, 194 flow. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:48,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:55:48,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 99 [2022-11-18 20:55:48,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:55:49,073 INFO L130 PetriNetUnfolder]: 328/1001 cut-off events. [2022-11-18 20:55:49,074 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2022-11-18 20:55:49,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1631 conditions, 1001 events. 328/1001 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 6262 event pairs, 69 based on Foata normal form. 0/965 useless extension candidates. Maximal degree in co-relation 1572. Up to 191 conditions per place. [2022-11-18 20:55:49,082 INFO L137 encePairwiseOnDemand]: 91/99 looper letters, 28 selfloop transitions, 4 changer transitions 55/143 dead transitions. [2022-11-18 20:55:49,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 143 transitions, 456 flow [2022-11-18 20:55:49,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:55:49,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 20:55:49,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 750 transitions. [2022-11-18 20:55:49,087 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7575757575757576 [2022-11-18 20:55:49,088 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 750 transitions. [2022-11-18 20:55:49,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 750 transitions. [2022-11-18 20:55:49,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:55:49,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 750 transitions. [2022-11-18 20:55:49,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 75.0) internal successors, (750), 10 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:49,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:49,096 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:49,096 INFO L175 Difference]: Start difference. First operand has 100 places, 93 transitions, 194 flow. Second operand 10 states and 750 transitions. [2022-11-18 20:55:49,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 143 transitions, 456 flow [2022-11-18 20:55:49,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 143 transitions, 446 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:55:49,099 INFO L231 Difference]: Finished difference. Result has 114 places, 83 transitions, 194 flow [2022-11-18 20:55:49,100 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=194, PETRI_PLACES=114, PETRI_TRANSITIONS=83} [2022-11-18 20:55:49,101 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, 12 predicate places. [2022-11-18 20:55:49,101 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 83 transitions, 194 flow [2022-11-18 20:55:49,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:49,101 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:55:49,102 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] [2022-11-18 20:55:49,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:55:49,102 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:55:49,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:49,103 INFO L85 PathProgramCache]: Analyzing trace with hash -42376046, now seen corresponding path program 1 times [2022-11-18 20:55:49,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:49,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385092064] [2022-11-18 20:55:49,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:49,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:49,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:50,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:55:50,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:50,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385092064] [2022-11-18 20:55:50,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385092064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:55:50,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:55:50,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 20:55:50,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079677923] [2022-11-18 20:55:50,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:55:50,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:55:50,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:50,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:55:50,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:55:50,709 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 99 [2022-11-18 20:55:50,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 83 transitions, 194 flow. Second operand has 11 states, 11 states have (on average 73.63636363636364) internal successors, (810), 11 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:50,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:55:50,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 99 [2022-11-18 20:55:50,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:55:51,296 INFO L130 PetriNetUnfolder]: 132/375 cut-off events. [2022-11-18 20:55:51,296 INFO L131 PetriNetUnfolder]: For 87/87 co-relation queries the response was YES. [2022-11-18 20:55:51,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 763 conditions, 375 events. 132/375 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1560 event pairs, 65 based on Foata normal form. 8/367 useless extension candidates. Maximal degree in co-relation 699. Up to 180 conditions per place. [2022-11-18 20:55:51,299 INFO L137 encePairwiseOnDemand]: 87/99 looper letters, 24 selfloop transitions, 11 changer transitions 25/121 dead transitions. [2022-11-18 20:55:51,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 121 transitions, 413 flow [2022-11-18 20:55:51,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:55:51,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 20:55:51,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 998 transitions. [2022-11-18 20:55:51,303 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7754467754467754 [2022-11-18 20:55:51,303 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 998 transitions. [2022-11-18 20:55:51,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 998 transitions. [2022-11-18 20:55:51,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:55:51,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 998 transitions. [2022-11-18 20:55:51,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 76.76923076923077) internal successors, (998), 13 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:51,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 99.0) internal successors, (1386), 14 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:51,311 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 99.0) internal successors, (1386), 14 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:51,311 INFO L175 Difference]: Start difference. First operand has 114 places, 83 transitions, 194 flow. Second operand 13 states and 998 transitions. [2022-11-18 20:55:51,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 121 transitions, 413 flow [2022-11-18 20:55:51,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 121 transitions, 375 flow, removed 14 selfloop flow, removed 9 redundant places. [2022-11-18 20:55:51,317 INFO L231 Difference]: Finished difference. Result has 111 places, 92 transitions, 260 flow [2022-11-18 20:55:51,317 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=260, PETRI_PLACES=111, PETRI_TRANSITIONS=92} [2022-11-18 20:55:51,318 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, 9 predicate places. [2022-11-18 20:55:51,319 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 92 transitions, 260 flow [2022-11-18 20:55:51,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 73.63636363636364) internal successors, (810), 11 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:51,319 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:55:51,320 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:55:51,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:55:51,320 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:55:51,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:51,321 INFO L85 PathProgramCache]: Analyzing trace with hash -2054157460, now seen corresponding path program 2 times [2022-11-18 20:55:51,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:51,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186272611] [2022-11-18 20:55:51,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:51,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:51,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:53,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:55:53,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:53,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186272611] [2022-11-18 20:55:53,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186272611] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:55:53,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:55:53,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-18 20:55:53,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859006307] [2022-11-18 20:55:53,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:55:53,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:55:53,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:53,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:55:53,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:55:53,039 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 99 [2022-11-18 20:55:53,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 92 transitions, 260 flow. Second operand has 14 states, 14 states have (on average 71.42857142857143) internal successors, (1000), 14 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:53,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:55:53,040 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 99 [2022-11-18 20:55:53,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:55:53,608 INFO L130 PetriNetUnfolder]: 122/362 cut-off events. [2022-11-18 20:55:53,608 INFO L131 PetriNetUnfolder]: For 401/493 co-relation queries the response was YES. [2022-11-18 20:55:53,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 975 conditions, 362 events. 122/362 cut-off events. For 401/493 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1495 event pairs, 19 based on Foata normal form. 16/363 useless extension candidates. Maximal degree in co-relation 906. Up to 143 conditions per place. [2022-11-18 20:55:53,612 INFO L137 encePairwiseOnDemand]: 85/99 looper letters, 26 selfloop transitions, 22 changer transitions 25/132 dead transitions. [2022-11-18 20:55:53,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 132 transitions, 599 flow [2022-11-18 20:55:53,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:55:53,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 20:55:53,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1187 transitions. [2022-11-18 20:55:53,616 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7493686868686869 [2022-11-18 20:55:53,616 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1187 transitions. [2022-11-18 20:55:53,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1187 transitions. [2022-11-18 20:55:53,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:55:53,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1187 transitions. [2022-11-18 20:55:53,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 74.1875) internal successors, (1187), 16 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:53,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 99.0) internal successors, (1683), 17 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:53,625 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 99.0) internal successors, (1683), 17 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:53,625 INFO L175 Difference]: Start difference. First operand has 111 places, 92 transitions, 260 flow. Second operand 16 states and 1187 transitions. [2022-11-18 20:55:53,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 132 transitions, 599 flow [2022-11-18 20:55:53,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 132 transitions, 584 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-11-18 20:55:53,631 INFO L231 Difference]: Finished difference. Result has 125 places, 100 transitions, 382 flow [2022-11-18 20:55:53,632 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=382, PETRI_PLACES=125, PETRI_TRANSITIONS=100} [2022-11-18 20:55:53,632 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, 23 predicate places. [2022-11-18 20:55:53,633 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 100 transitions, 382 flow [2022-11-18 20:55:53,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 71.42857142857143) internal successors, (1000), 14 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:53,634 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:55:53,634 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] [2022-11-18 20:55:53,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:55:53,634 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:55:53,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:53,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1960792725, now seen corresponding path program 1 times [2022-11-18 20:55:53,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:53,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082510866] [2022-11-18 20:55:53,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:53,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:56,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:55:56,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:56,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082510866] [2022-11-18 20:55:56,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082510866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:55:56,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:55:56,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-18 20:55:56,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161148398] [2022-11-18 20:55:56,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:55:56,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:55:56,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:56,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:55:56,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:55:56,412 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 99 [2022-11-18 20:55:56,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 100 transitions, 382 flow. Second operand has 14 states, 14 states have (on average 68.71428571428571) internal successors, (962), 14 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:56,414 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:55:56,414 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 99 [2022-11-18 20:55:56,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:55:56,925 INFO L130 PetriNetUnfolder]: 98/323 cut-off events. [2022-11-18 20:55:56,925 INFO L131 PetriNetUnfolder]: For 825/875 co-relation queries the response was YES. [2022-11-18 20:55:56,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1020 conditions, 323 events. 98/323 cut-off events. For 825/875 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1230 event pairs, 28 based on Foata normal form. 9/314 useless extension candidates. Maximal degree in co-relation 937. Up to 144 conditions per place. [2022-11-18 20:55:56,929 INFO L137 encePairwiseOnDemand]: 84/99 looper letters, 36 selfloop transitions, 17 changer transitions 16/125 dead transitions. [2022-11-18 20:55:56,929 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 125 transitions, 628 flow [2022-11-18 20:55:56,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:55:56,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 20:55:56,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1203 transitions. [2022-11-18 20:55:56,933 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.714795008912656 [2022-11-18 20:55:56,933 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1203 transitions. [2022-11-18 20:55:56,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1203 transitions. [2022-11-18 20:55:56,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:55:56,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1203 transitions. [2022-11-18 20:55:56,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 70.76470588235294) internal successors, (1203), 17 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:56,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 99.0) internal successors, (1782), 18 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:56,944 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 99.0) internal successors, (1782), 18 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:56,944 INFO L175 Difference]: Start difference. First operand has 125 places, 100 transitions, 382 flow. Second operand 17 states and 1203 transitions. [2022-11-18 20:55:56,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 125 transitions, 628 flow [2022-11-18 20:55:56,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 125 transitions, 572 flow, removed 25 selfloop flow, removed 9 redundant places. [2022-11-18 20:55:56,956 INFO L231 Difference]: Finished difference. Result has 133 places, 101 transitions, 408 flow [2022-11-18 20:55:56,957 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=408, PETRI_PLACES=133, PETRI_TRANSITIONS=101} [2022-11-18 20:55:56,959 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, 31 predicate places. [2022-11-18 20:55:56,960 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 101 transitions, 408 flow [2022-11-18 20:55:56,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 68.71428571428571) internal successors, (962), 14 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:56,960 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:55:56,961 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] [2022-11-18 20:55:56,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:55:56,961 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:55:56,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:56,963 INFO L85 PathProgramCache]: Analyzing trace with hash -819606901, now seen corresponding path program 2 times [2022-11-18 20:55:56,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:56,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285238068] [2022-11-18 20:55:56,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:56,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:57,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:59,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:55:59,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:59,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285238068] [2022-11-18 20:55:59,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285238068] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:55:59,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:55:59,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-18 20:55:59,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911114952] [2022-11-18 20:55:59,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:55:59,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:55:59,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:59,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:55:59,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:55:59,304 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 99 [2022-11-18 20:55:59,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 101 transitions, 408 flow. Second operand has 16 states, 16 states have (on average 70.375) internal successors, (1126), 16 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:59,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:55:59,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 99 [2022-11-18 20:55:59,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:55:59,862 INFO L130 PetriNetUnfolder]: 93/314 cut-off events. [2022-11-18 20:55:59,863 INFO L131 PetriNetUnfolder]: For 482/532 co-relation queries the response was YES. [2022-11-18 20:55:59,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 929 conditions, 314 events. 93/314 cut-off events. For 482/532 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1186 event pairs, 19 based on Foata normal form. 7/301 useless extension candidates. Maximal degree in co-relation 845. Up to 130 conditions per place. [2022-11-18 20:55:59,866 INFO L137 encePairwiseOnDemand]: 86/99 looper letters, 28 selfloop transitions, 21 changer transitions 16/123 dead transitions. [2022-11-18 20:55:59,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 123 transitions, 656 flow [2022-11-18 20:55:59,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:55:59,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 20:55:59,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1160 transitions. [2022-11-18 20:55:59,870 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7323232323232324 [2022-11-18 20:55:59,871 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1160 transitions. [2022-11-18 20:55:59,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1160 transitions. [2022-11-18 20:55:59,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:55:59,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1160 transitions. [2022-11-18 20:55:59,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 72.5) internal successors, (1160), 16 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:59,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 99.0) internal successors, (1683), 17 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:59,879 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 99.0) internal successors, (1683), 17 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:59,879 INFO L175 Difference]: Start difference. First operand has 133 places, 101 transitions, 408 flow. Second operand 16 states and 1160 transitions. [2022-11-18 20:55:59,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 123 transitions, 656 flow [2022-11-18 20:55:59,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 123 transitions, 604 flow, removed 13 selfloop flow, removed 11 redundant places. [2022-11-18 20:55:59,885 INFO L231 Difference]: Finished difference. Result has 138 places, 101 transitions, 434 flow [2022-11-18 20:55:59,886 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=434, PETRI_PLACES=138, PETRI_TRANSITIONS=101} [2022-11-18 20:55:59,889 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, 36 predicate places. [2022-11-18 20:55:59,889 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 101 transitions, 434 flow [2022-11-18 20:55:59,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 70.375) internal successors, (1126), 16 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:55:59,890 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:55:59,890 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] [2022-11-18 20:55:59,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:55:59,890 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:55:59,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:59,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1546753835, now seen corresponding path program 1 times [2022-11-18 20:55:59,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:59,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829678159] [2022-11-18 20:55:59,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:59,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:59,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:00,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:00,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:00,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829678159] [2022-11-18 20:56:00,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829678159] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:00,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:00,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 20:56:00,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017122938] [2022-11-18 20:56:00,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:00,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:56:00,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:00,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:56:00,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:56:00,630 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 99 [2022-11-18 20:56:00,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 101 transitions, 434 flow. Second operand has 10 states, 10 states have (on average 71.9) internal successors, (719), 10 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:00,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:00,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 99 [2022-11-18 20:56:00,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:01,345 INFO L130 PetriNetUnfolder]: 384/853 cut-off events. [2022-11-18 20:56:01,346 INFO L131 PetriNetUnfolder]: For 1571/1575 co-relation queries the response was YES. [2022-11-18 20:56:01,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2508 conditions, 853 events. 384/853 cut-off events. For 1571/1575 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4167 event pairs, 114 based on Foata normal form. 4/829 useless extension candidates. Maximal degree in co-relation 2421. Up to 574 conditions per place. [2022-11-18 20:56:01,354 INFO L137 encePairwiseOnDemand]: 87/99 looper letters, 40 selfloop transitions, 40 changer transitions 5/143 dead transitions. [2022-11-18 20:56:01,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 143 transitions, 747 flow [2022-11-18 20:56:01,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:56:01,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 20:56:01,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1198 transitions. [2022-11-18 20:56:01,358 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7563131313131313 [2022-11-18 20:56:01,358 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1198 transitions. [2022-11-18 20:56:01,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1198 transitions. [2022-11-18 20:56:01,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:01,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1198 transitions. [2022-11-18 20:56:01,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 74.875) internal successors, (1198), 16 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:01,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 99.0) internal successors, (1683), 17 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:01,367 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 99.0) internal successors, (1683), 17 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:01,367 INFO L175 Difference]: Start difference. First operand has 138 places, 101 transitions, 434 flow. Second operand 16 states and 1198 transitions. [2022-11-18 20:56:01,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 143 transitions, 747 flow [2022-11-18 20:56:01,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 143 transitions, 585 flow, removed 10 selfloop flow, removed 29 redundant places. [2022-11-18 20:56:01,377 INFO L231 Difference]: Finished difference. Result has 123 places, 125 transitions, 499 flow [2022-11-18 20:56:01,377 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=499, PETRI_PLACES=123, PETRI_TRANSITIONS=125} [2022-11-18 20:56:01,378 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, 21 predicate places. [2022-11-18 20:56:01,378 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 125 transitions, 499 flow [2022-11-18 20:56:01,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 71.9) internal successors, (719), 10 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:01,379 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:01,379 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] [2022-11-18 20:56:01,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:56:01,380 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:56:01,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:01,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1328316493, now seen corresponding path program 2 times [2022-11-18 20:56:01,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:01,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740246669] [2022-11-18 20:56:01,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:01,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:01,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:01,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:01,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:01,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740246669] [2022-11-18 20:56:01,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740246669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:01,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:01,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:56:01,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466255886] [2022-11-18 20:56:01,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:01,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:56:01,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:01,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:56:01,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:56:01,604 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 99 [2022-11-18 20:56:01,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 125 transitions, 499 flow. Second operand has 6 states, 6 states have (on average 77.33333333333333) internal successors, (464), 6 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:01,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:01,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 99 [2022-11-18 20:56:01,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:01,982 INFO L130 PetriNetUnfolder]: 247/674 cut-off events. [2022-11-18 20:56:01,983 INFO L131 PetriNetUnfolder]: For 787/789 co-relation queries the response was YES. [2022-11-18 20:56:01,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1797 conditions, 674 events. 247/674 cut-off events. For 787/789 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3526 event pairs, 19 based on Foata normal form. 27/699 useless extension candidates. Maximal degree in co-relation 1728. Up to 164 conditions per place. [2022-11-18 20:56:01,988 INFO L137 encePairwiseOnDemand]: 91/99 looper letters, 40 selfloop transitions, 6 changer transitions 69/182 dead transitions. [2022-11-18 20:56:01,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 182 transitions, 984 flow [2022-11-18 20:56:01,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:56:01,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:56:01,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 752 transitions. [2022-11-18 20:56:01,991 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8439955106621774 [2022-11-18 20:56:01,991 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 752 transitions. [2022-11-18 20:56:01,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 752 transitions. [2022-11-18 20:56:01,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:01,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 752 transitions. [2022-11-18 20:56:01,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 83.55555555555556) internal successors, (752), 9 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:01,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:01,997 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:01,997 INFO L175 Difference]: Start difference. First operand has 123 places, 125 transitions, 499 flow. Second operand 9 states and 752 transitions. [2022-11-18 20:56:01,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 182 transitions, 984 flow [2022-11-18 20:56:02,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 182 transitions, 966 flow, removed 7 selfloop flow, removed 2 redundant places. [2022-11-18 20:56:02,006 INFO L231 Difference]: Finished difference. Result has 134 places, 99 transitions, 372 flow [2022-11-18 20:56:02,007 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=372, PETRI_PLACES=134, PETRI_TRANSITIONS=99} [2022-11-18 20:56:02,009 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, 32 predicate places. [2022-11-18 20:56:02,009 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 99 transitions, 372 flow [2022-11-18 20:56:02,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.33333333333333) internal successors, (464), 6 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:02,010 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:02,010 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] [2022-11-18 20:56:02,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:56:02,010 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:56:02,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:02,011 INFO L85 PathProgramCache]: Analyzing trace with hash -345499278, now seen corresponding path program 1 times [2022-11-18 20:56:02,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:02,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343719823] [2022-11-18 20:56:02,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:02,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:04,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:04,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:04,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343719823] [2022-11-18 20:56:04,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343719823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:04,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:04,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-18 20:56:04,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61148209] [2022-11-18 20:56:04,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:04,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:56:04,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:04,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:56:04,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:56:04,791 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 99 [2022-11-18 20:56:04,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 99 transitions, 372 flow. Second operand has 14 states, 14 states have (on average 70.64285714285714) internal successors, (989), 14 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:04,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:04,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 99 [2022-11-18 20:56:04,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:05,882 INFO L130 PetriNetUnfolder]: 73/374 cut-off events. [2022-11-18 20:56:05,882 INFO L131 PetriNetUnfolder]: For 478/483 co-relation queries the response was YES. [2022-11-18 20:56:05,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1024 conditions, 374 events. 73/374 cut-off events. For 478/483 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1749 event pairs, 13 based on Foata normal form. 9/373 useless extension candidates. Maximal degree in co-relation 940. Up to 105 conditions per place. [2022-11-18 20:56:05,886 INFO L137 encePairwiseOnDemand]: 86/99 looper letters, 32 selfloop transitions, 20 changer transitions 16/131 dead transitions. [2022-11-18 20:56:05,886 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 131 transitions, 623 flow [2022-11-18 20:56:05,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:56:05,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 20:56:05,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1167 transitions. [2022-11-18 20:56:05,890 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7367424242424242 [2022-11-18 20:56:05,891 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1167 transitions. [2022-11-18 20:56:05,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1167 transitions. [2022-11-18 20:56:05,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:05,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1167 transitions. [2022-11-18 20:56:05,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 72.9375) internal successors, (1167), 16 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:05,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 99.0) internal successors, (1683), 17 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:05,905 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 99.0) internal successors, (1683), 17 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:05,905 INFO L175 Difference]: Start difference. First operand has 134 places, 99 transitions, 372 flow. Second operand 16 states and 1167 transitions. [2022-11-18 20:56:05,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 131 transitions, 623 flow [2022-11-18 20:56:05,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 131 transitions, 605 flow, removed 7 selfloop flow, removed 7 redundant places. [2022-11-18 20:56:05,913 INFO L231 Difference]: Finished difference. Result has 139 places, 109 transitions, 476 flow [2022-11-18 20:56:05,913 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=476, PETRI_PLACES=139, PETRI_TRANSITIONS=109} [2022-11-18 20:56:05,914 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, 37 predicate places. [2022-11-18 20:56:05,914 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 109 transitions, 476 flow [2022-11-18 20:56:05,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 70.64285714285714) internal successors, (989), 14 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:05,915 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:05,915 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] [2022-11-18 20:56:05,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:56:05,916 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:56:05,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:05,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1042500880, now seen corresponding path program 2 times [2022-11-18 20:56:05,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:05,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351201680] [2022-11-18 20:56:05,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:05,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:05,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:07,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:07,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:07,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351201680] [2022-11-18 20:56:07,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351201680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:07,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:07,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 20:56:07,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585954850] [2022-11-18 20:56:07,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:07,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:56:07,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:07,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:56:07,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:56:07,323 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 99 [2022-11-18 20:56:07,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 109 transitions, 476 flow. Second operand has 12 states, 12 states have (on average 70.91666666666667) internal successors, (851), 12 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:07,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:07,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 99 [2022-11-18 20:56:07,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:07,865 INFO L130 PetriNetUnfolder]: 98/528 cut-off events. [2022-11-18 20:56:07,865 INFO L131 PetriNetUnfolder]: For 1005/1016 co-relation queries the response was YES. [2022-11-18 20:56:07,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1575 conditions, 528 events. 98/528 cut-off events. For 1005/1016 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3038 event pairs, 11 based on Foata normal form. 10/521 useless extension candidates. Maximal degree in co-relation 1484. Up to 106 conditions per place. [2022-11-18 20:56:07,871 INFO L137 encePairwiseOnDemand]: 86/99 looper letters, 42 selfloop transitions, 30 changer transitions 16/151 dead transitions. [2022-11-18 20:56:07,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 151 transitions, 904 flow [2022-11-18 20:56:07,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:56:07,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-18 20:56:07,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1040 transitions. [2022-11-18 20:56:07,873 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7503607503607503 [2022-11-18 20:56:07,874 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1040 transitions. [2022-11-18 20:56:07,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1040 transitions. [2022-11-18 20:56:07,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:07,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1040 transitions. [2022-11-18 20:56:07,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 74.28571428571429) internal successors, (1040), 14 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:07,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 99.0) internal successors, (1485), 15 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:07,885 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 99.0) internal successors, (1485), 15 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:07,885 INFO L175 Difference]: Start difference. First operand has 139 places, 109 transitions, 476 flow. Second operand 14 states and 1040 transitions. [2022-11-18 20:56:07,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 151 transitions, 904 flow [2022-11-18 20:56:07,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 151 transitions, 821 flow, removed 38 selfloop flow, removed 9 redundant places. [2022-11-18 20:56:07,893 INFO L231 Difference]: Finished difference. Result has 147 places, 121 transitions, 638 flow [2022-11-18 20:56:07,893 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=638, PETRI_PLACES=147, PETRI_TRANSITIONS=121} [2022-11-18 20:56:07,894 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, 45 predicate places. [2022-11-18 20:56:07,894 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 121 transitions, 638 flow [2022-11-18 20:56:07,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 70.91666666666667) internal successors, (851), 12 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:07,895 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:07,895 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] [2022-11-18 20:56:07,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:56:07,896 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:56:07,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:07,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1656143502, now seen corresponding path program 3 times [2022-11-18 20:56:07,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:07,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879927111] [2022-11-18 20:56:07,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:07,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:10,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:10,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:10,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879927111] [2022-11-18 20:56:10,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879927111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:10,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:10,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-18 20:56:10,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435271526] [2022-11-18 20:56:10,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:10,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:56:10,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:10,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:56:10,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:56:10,110 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 99 [2022-11-18 20:56:10,111 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 121 transitions, 638 flow. Second operand has 14 states, 14 states have (on average 69.71428571428571) internal successors, (976), 14 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:10,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:10,111 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 99 [2022-11-18 20:56:10,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:11,082 INFO L130 PetriNetUnfolder]: 112/558 cut-off events. [2022-11-18 20:56:11,082 INFO L131 PetriNetUnfolder]: For 1451/1474 co-relation queries the response was YES. [2022-11-18 20:56:11,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1851 conditions, 558 events. 112/558 cut-off events. For 1451/1474 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3332 event pairs, 35 based on Foata normal form. 15/545 useless extension candidates. Maximal degree in co-relation 1754. Up to 155 conditions per place. [2022-11-18 20:56:11,088 INFO L137 encePairwiseOnDemand]: 84/99 looper letters, 43 selfloop transitions, 24 changer transitions 14/143 dead transitions. [2022-11-18 20:56:11,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 143 transitions, 965 flow [2022-11-18 20:56:11,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:56:11,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-18 20:56:11,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1010 transitions. [2022-11-18 20:56:11,091 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7287157287157288 [2022-11-18 20:56:11,092 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1010 transitions. [2022-11-18 20:56:11,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1010 transitions. [2022-11-18 20:56:11,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:11,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1010 transitions. [2022-11-18 20:56:11,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 72.14285714285714) internal successors, (1010), 14 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:11,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 99.0) internal successors, (1485), 15 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:11,098 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 99.0) internal successors, (1485), 15 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:11,098 INFO L175 Difference]: Start difference. First operand has 147 places, 121 transitions, 638 flow. Second operand 14 states and 1010 transitions. [2022-11-18 20:56:11,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 143 transitions, 965 flow [2022-11-18 20:56:11,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 143 transitions, 926 flow, removed 16 selfloop flow, removed 8 redundant places. [2022-11-18 20:56:11,108 INFO L231 Difference]: Finished difference. Result has 152 places, 127 transitions, 738 flow [2022-11-18 20:56:11,109 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=738, PETRI_PLACES=152, PETRI_TRANSITIONS=127} [2022-11-18 20:56:11,109 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, 50 predicate places. [2022-11-18 20:56:11,110 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 127 transitions, 738 flow [2022-11-18 20:56:11,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 69.71428571428571) internal successors, (976), 14 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:11,110 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:11,111 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] [2022-11-18 20:56:11,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:56:11,111 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:56:11,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:11,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1939989974, now seen corresponding path program 4 times [2022-11-18 20:56:11,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:11,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163412135] [2022-11-18 20:56:11,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:11,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:11,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:11,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:11,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163412135] [2022-11-18 20:56:11,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163412135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:11,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:11,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:56:11,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509297471] [2022-11-18 20:56:11,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:11,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:56:11,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:11,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:56:11,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:56:11,343 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 99 [2022-11-18 20:56:11,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 127 transitions, 738 flow. Second operand has 7 states, 7 states have (on average 77.28571428571429) internal successors, (541), 7 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:11,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:11,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 99 [2022-11-18 20:56:11,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:11,708 INFO L130 PetriNetUnfolder]: 177/573 cut-off events. [2022-11-18 20:56:11,708 INFO L131 PetriNetUnfolder]: For 2042/2057 co-relation queries the response was YES. [2022-11-18 20:56:11,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2266 conditions, 573 events. 177/573 cut-off events. For 2042/2057 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3231 event pairs, 35 based on Foata normal form. 35/606 useless extension candidates. Maximal degree in co-relation 2227. Up to 148 conditions per place. [2022-11-18 20:56:11,714 INFO L137 encePairwiseOnDemand]: 91/99 looper letters, 55 selfloop transitions, 7 changer transitions 49/178 dead transitions. [2022-11-18 20:56:11,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 178 transitions, 1417 flow [2022-11-18 20:56:11,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:56:11,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 20:56:11,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 804 transitions. [2022-11-18 20:56:11,717 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8121212121212121 [2022-11-18 20:56:11,717 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 804 transitions. [2022-11-18 20:56:11,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 804 transitions. [2022-11-18 20:56:11,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:11,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 804 transitions. [2022-11-18 20:56:11,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 80.4) internal successors, (804), 10 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:11,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:11,722 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:11,723 INFO L175 Difference]: Start difference. First operand has 152 places, 127 transitions, 738 flow. Second operand 10 states and 804 transitions. [2022-11-18 20:56:11,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 178 transitions, 1417 flow [2022-11-18 20:56:11,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 178 transitions, 1191 flow, removed 70 selfloop flow, removed 19 redundant places. [2022-11-18 20:56:11,736 INFO L231 Difference]: Finished difference. Result has 144 places, 119 transitions, 575 flow [2022-11-18 20:56:11,736 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=575, PETRI_PLACES=144, PETRI_TRANSITIONS=119} [2022-11-18 20:56:11,737 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, 42 predicate places. [2022-11-18 20:56:11,737 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 119 transitions, 575 flow [2022-11-18 20:56:11,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.28571428571429) internal successors, (541), 7 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:11,738 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:11,738 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] [2022-11-18 20:56:11,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:56:11,740 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:56:11,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:11,741 INFO L85 PathProgramCache]: Analyzing trace with hash 754042176, now seen corresponding path program 1 times [2022-11-18 20:56:11,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:11,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665675157] [2022-11-18 20:56:11,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:11,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:11,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:12,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:12,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:12,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665675157] [2022-11-18 20:56:12,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665675157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:12,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:12,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 20:56:12,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206241698] [2022-11-18 20:56:12,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:12,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:56:12,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:12,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:56:12,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:56:12,891 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 99 [2022-11-18 20:56:12,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 119 transitions, 575 flow. Second operand has 11 states, 11 states have (on average 66.72727272727273) internal successors, (734), 11 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:12,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:12,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 99 [2022-11-18 20:56:12,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:13,344 INFO L130 PetriNetUnfolder]: 42/243 cut-off events. [2022-11-18 20:56:13,345 INFO L131 PetriNetUnfolder]: For 389/389 co-relation queries the response was YES. [2022-11-18 20:56:13,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 782 conditions, 243 events. 42/243 cut-off events. For 389/389 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 848 event pairs, 3 based on Foata normal form. 1/241 useless extension candidates. Maximal degree in co-relation 717. Up to 52 conditions per place. [2022-11-18 20:56:13,347 INFO L137 encePairwiseOnDemand]: 85/99 looper letters, 28 selfloop transitions, 8 changer transitions 51/141 dead transitions. [2022-11-18 20:56:13,347 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 141 transitions, 877 flow [2022-11-18 20:56:13,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:56:13,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 20:56:13,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 822 transitions. [2022-11-18 20:56:13,349 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6919191919191919 [2022-11-18 20:56:13,349 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 822 transitions. [2022-11-18 20:56:13,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 822 transitions. [2022-11-18 20:56:13,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:13,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 822 transitions. [2022-11-18 20:56:13,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 68.5) internal successors, (822), 12 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:13,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 99.0) internal successors, (1287), 13 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:13,353 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 99.0) internal successors, (1287), 13 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:13,354 INFO L175 Difference]: Start difference. First operand has 144 places, 119 transitions, 575 flow. Second operand 12 states and 822 transitions. [2022-11-18 20:56:13,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 141 transitions, 877 flow [2022-11-18 20:56:13,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 141 transitions, 768 flow, removed 27 selfloop flow, removed 19 redundant places. [2022-11-18 20:56:13,361 INFO L231 Difference]: Finished difference. Result has 139 places, 90 transitions, 303 flow [2022-11-18 20:56:13,361 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=303, PETRI_PLACES=139, PETRI_TRANSITIONS=90} [2022-11-18 20:56:13,362 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, 37 predicate places. [2022-11-18 20:56:13,363 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 90 transitions, 303 flow [2022-11-18 20:56:13,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 66.72727272727273) internal successors, (734), 11 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:13,363 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:56:13,363 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] [2022-11-18 20:56:13,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:56:13,364 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:56:13,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:13,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1439276420, now seen corresponding path program 2 times [2022-11-18 20:56:13,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:13,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278838] [2022-11-18 20:56:13,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:13,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:16,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:56:16,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:16,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278838] [2022-11-18 20:56:16,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:16,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:16,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-18 20:56:16,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471275266] [2022-11-18 20:56:16,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:16,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 20:56:16,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:16,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 20:56:16,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:56:16,844 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 99 [2022-11-18 20:56:16,846 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 90 transitions, 303 flow. Second operand has 17 states, 17 states have (on average 67.6470588235294) internal successors, (1150), 17 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:16,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:56:16,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 99 [2022-11-18 20:56:16,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:56:17,480 INFO L130 PetriNetUnfolder]: 6/112 cut-off events. [2022-11-18 20:56:17,480 INFO L131 PetriNetUnfolder]: For 64/66 co-relation queries the response was YES. [2022-11-18 20:56:17,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 112 events. 6/112 cut-off events. For 64/66 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 146 event pairs, 0 based on Foata normal form. 3/114 useless extension candidates. Maximal degree in co-relation 251. Up to 7 conditions per place. [2022-11-18 20:56:17,481 INFO L137 encePairwiseOnDemand]: 85/99 looper letters, 0 selfloop transitions, 0 changer transitions 89/89 dead transitions. [2022-11-18 20:56:17,481 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 89 transitions, 369 flow [2022-11-18 20:56:17,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:56:17,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 20:56:17,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1022 transitions. [2022-11-18 20:56:17,484 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6882154882154882 [2022-11-18 20:56:17,484 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1022 transitions. [2022-11-18 20:56:17,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1022 transitions. [2022-11-18 20:56:17,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:56:17,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1022 transitions. [2022-11-18 20:56:17,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 68.13333333333334) internal successors, (1022), 15 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:17,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:17,491 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:17,491 INFO L175 Difference]: Start difference. First operand has 139 places, 90 transitions, 303 flow. Second operand 15 states and 1022 transitions. [2022-11-18 20:56:17,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 89 transitions, 369 flow [2022-11-18 20:56:17,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 89 transitions, 313 flow, removed 14 selfloop flow, removed 18 redundant places. [2022-11-18 20:56:17,496 INFO L231 Difference]: Finished difference. Result has 117 places, 0 transitions, 0 flow [2022-11-18 20:56:17,496 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=117, PETRI_TRANSITIONS=0} [2022-11-18 20:56:17,497 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, 15 predicate places. [2022-11-18 20:56:17,497 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 0 transitions, 0 flow [2022-11-18 20:56:17,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 67.6470588235294) internal successors, (1150), 17 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:56:17,500 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-11-18 20:56:17,501 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-11-18 20:56:17,501 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-11-18 20:56:17,501 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-11-18 20:56:17,501 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-11-18 20:56:17,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:56:17,501 INFO L444 BasicCegarLoop]: Path program histogram: [4, 2, 2, 2, 2, 1, 1] [2022-11-18 20:56:17,507 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-18 20:56:17,507 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 20:56:17,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:56:17 BasicIcfg [2022-11-18 20:56:17,512 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 20:56:17,513 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 20:56:17,513 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 20:56:17,513 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 20:56:17,514 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:55:45" (3/4) ... [2022-11-18 20:56:17,517 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 20:56:17,522 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-18 20:56:17,522 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-18 20:56:17,527 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2022-11-18 20:56:17,527 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-11-18 20:56:17,527 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 20:56:17,527 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 20:56:17,562 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb9e45-a486-4822-a39b-fdb8357b326e/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 20:56:17,563 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 20:56:17,563 INFO L158 Benchmark]: Toolchain (without parser) took 33794.56ms. Allocated memory was 113.2MB in the beginning and 541.1MB in the end (delta: 427.8MB). Free memory was 73.2MB in the beginning and 315.1MB in the end (delta: -241.9MB). Peak memory consumption was 184.7MB. Max. memory is 16.1GB. [2022-11-18 20:56:17,563 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 113.2MB. Free memory is still 91.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:56:17,564 INFO L158 Benchmark]: CACSL2BoogieTranslator took 791.66ms. Allocated memory is still 113.2MB. Free memory was 73.0MB in the beginning and 72.1MB in the end (delta: 899.1kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 20:56:17,564 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.79ms. Allocated memory is still 113.2MB. Free memory was 71.6MB in the beginning and 68.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:56:17,564 INFO L158 Benchmark]: Boogie Preprocessor took 63.94ms. Allocated memory is still 113.2MB. Free memory was 68.5MB in the beginning and 66.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:56:17,565 INFO L158 Benchmark]: RCFGBuilder took 998.07ms. Allocated memory was 113.2MB in the beginning and 142.6MB in the end (delta: 29.4MB). Free memory was 66.4MB in the beginning and 96.6MB in the end (delta: -30.2MB). Peak memory consumption was 36.3MB. Max. memory is 16.1GB. [2022-11-18 20:56:17,565 INFO L158 Benchmark]: TraceAbstraction took 31826.73ms. Allocated memory was 142.6MB in the beginning and 541.1MB in the end (delta: 398.5MB). Free memory was 95.7MB in the beginning and 318.3MB in the end (delta: -222.6MB). Peak memory consumption was 175.7MB. Max. memory is 16.1GB. [2022-11-18 20:56:17,565 INFO L158 Benchmark]: Witness Printer took 49.84ms. Allocated memory is still 541.1MB. Free memory was 318.3MB in the beginning and 315.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:56:17,567 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 113.2MB. Free memory is still 91.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 791.66ms. Allocated memory is still 113.2MB. Free memory was 73.0MB in the beginning and 72.1MB in the end (delta: 899.1kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.79ms. Allocated memory is still 113.2MB. Free memory was 71.6MB in the beginning and 68.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.94ms. Allocated memory is still 113.2MB. Free memory was 68.5MB in the beginning and 66.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 998.07ms. Allocated memory was 113.2MB in the beginning and 142.6MB in the end (delta: 29.4MB). Free memory was 66.4MB in the beginning and 96.6MB in the end (delta: -30.2MB). Peak memory consumption was 36.3MB. Max. memory is 16.1GB. * TraceAbstraction took 31826.73ms. Allocated memory was 142.6MB in the beginning and 541.1MB in the end (delta: 398.5MB). Free memory was 95.7MB in the beginning and 318.3MB in the end (delta: -222.6MB). Peak memory consumption was 175.7MB. Max. memory is 16.1GB. * Witness Printer took 49.84ms. Allocated memory is still 541.1MB. Free memory was 318.3MB in the beginning and 315.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 120 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 31.7s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 8.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 670 SdHoareTripleChecker+Valid, 4.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 670 mSDsluCounter, 1153 SdHoareTripleChecker+Invalid, 3.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 955 mSDsCounter, 158 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2588 IncrementalHoareTripleChecker+Invalid, 2746 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 158 mSolverCounterUnsat, 198 mSDtfsCounter, 2588 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 237 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=738occurred in iteration=11, InterpolantAutomatonStates: 181, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 21.7s InterpolantComputationTime, 994 NumberOfCodeBlocks, 994 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 980 ConstructedInterpolants, 0 QuantifiedInterpolants, 8653 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-18 20:56:17,588 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb9e45-a486-4822-a39b-fdb8357b326e/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE