./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/rfi002_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_f51e16e5-a107-48d3-b566-66207eafe216/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51e16e5-a107-48d3-b566-66207eafe216/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51e16e5-a107-48d3-b566-66207eafe216/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51e16e5-a107-48d3-b566-66207eafe216/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/rfi002_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51e16e5-a107-48d3-b566-66207eafe216/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51e16e5-a107-48d3-b566-66207eafe216/bin/uautomizer-Dbtcem3rbc --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 48e6a57243e80a87d178da358ff4ad1dd63b86003507ef0dec3764d15038130a --- 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-5e519f3 [2022-11-02 20:48:05,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:48:05,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:48:05,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:48:05,452 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:48:05,454 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:48:05,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:48:05,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:48:05,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:48:05,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:48:05,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:48:05,463 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:48:05,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:48:05,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:48:05,466 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:48:05,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:48:05,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:48:05,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:48:05,471 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:48:05,473 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:48:05,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:48:05,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:48:05,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:48:05,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:48:05,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:48:05,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:48:05,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:48:05,485 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:48:05,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:48:05,486 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:48:05,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:48:05,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:48:05,489 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:48:05,489 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:48:05,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:48:05,491 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:48:05,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:48:05,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:48:05,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:48:05,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:48:05,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:48:05,496 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51e16e5-a107-48d3-b566-66207eafe216/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:48:05,532 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:48:05,532 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:48:05,533 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:48:05,533 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:48:05,534 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:48:05,534 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:48:05,534 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:48:05,535 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:48:05,535 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:48:05,535 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:48:05,535 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:48:05,536 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:48:05,536 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:48:05,536 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:48:05,536 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:48:05,536 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:48:05,537 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:48:05,537 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:48:05,537 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:48:05,537 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:48:05,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:48:05,538 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:48:05,538 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:48:05,538 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:48:05,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:48:05,539 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:48:05,543 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:48:05,543 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:48:05,544 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:48:05,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:48:05,545 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:48:05,545 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:48:05,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:48:05,546 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_f51e16e5-a107-48d3-b566-66207eafe216/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51e16e5-a107-48d3-b566-66207eafe216/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48e6a57243e80a87d178da358ff4ad1dd63b86003507ef0dec3764d15038130a [2022-11-02 20:48:05,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:48:05,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:48:05,888 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:48:05,890 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:48:05,891 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:48:05,893 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51e16e5-a107-48d3-b566-66207eafe216/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-wmm/rfi002_tso.i [2022-11-02 20:48:05,965 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51e16e5-a107-48d3-b566-66207eafe216/bin/uautomizer-Dbtcem3rbc/data/d2b50efbc/ec792f78fa124529b68f9360871fbd6f/FLAGd7ff23134 [2022-11-02 20:48:06,497 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:48:06,497 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51e16e5-a107-48d3-b566-66207eafe216/sv-benchmarks/c/pthread-wmm/rfi002_tso.i [2022-11-02 20:48:06,514 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51e16e5-a107-48d3-b566-66207eafe216/bin/uautomizer-Dbtcem3rbc/data/d2b50efbc/ec792f78fa124529b68f9360871fbd6f/FLAGd7ff23134 [2022-11-02 20:48:06,794 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51e16e5-a107-48d3-b566-66207eafe216/bin/uautomizer-Dbtcem3rbc/data/d2b50efbc/ec792f78fa124529b68f9360871fbd6f [2022-11-02 20:48:06,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:48:06,798 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:48:06,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:48:06,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:48:06,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:48:06,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:48:06" (1/1) ... [2022-11-02 20:48:06,805 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@afa4e2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:06, skipping insertion in model container [2022-11-02 20:48:06,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:48:06" (1/1) ... [2022-11-02 20:48:06,817 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:48:06,871 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:48:07,110 WARN L230 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_f51e16e5-a107-48d3-b566-66207eafe216/sv-benchmarks/c/pthread-wmm/rfi002_tso.i[987,1000] [2022-11-02 20:48:07,341 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:48:07,361 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:48:07,378 WARN L230 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_f51e16e5-a107-48d3-b566-66207eafe216/sv-benchmarks/c/pthread-wmm/rfi002_tso.i[987,1000] [2022-11-02 20:48:07,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:48:07,524 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:48:07,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:07 WrapperNode [2022-11-02 20:48:07,525 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:48:07,526 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:48:07,526 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:48:07,526 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:48:07,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:07" (1/1) ... [2022-11-02 20:48:07,583 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:07" (1/1) ... [2022-11-02 20:48:07,659 INFO L138 Inliner]: procedures = 175, calls = 48, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 551 [2022-11-02 20:48:07,671 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:48:07,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:48:07,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:48:07,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:48:07,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:07" (1/1) ... [2022-11-02 20:48:07,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:07" (1/1) ... [2022-11-02 20:48:07,689 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:07" (1/1) ... [2022-11-02 20:48:07,689 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:07" (1/1) ... [2022-11-02 20:48:07,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:07" (1/1) ... [2022-11-02 20:48:07,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:07" (1/1) ... [2022-11-02 20:48:07,760 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:07" (1/1) ... [2022-11-02 20:48:07,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:07" (1/1) ... [2022-11-02 20:48:07,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:48:07,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:48:07,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:48:07,784 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:48:07,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:07" (1/1) ... [2022-11-02 20:48:07,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:48:07,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51e16e5-a107-48d3-b566-66207eafe216/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:48:07,833 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51e16e5-a107-48d3-b566-66207eafe216/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:48:07,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51e16e5-a107-48d3-b566-66207eafe216/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:48:07,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:48:07,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 20:48:07,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:48:07,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:48:07,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:48:07,898 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-02 20:48:07,898 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-02 20:48:07,899 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-02 20:48:07,899 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-02 20:48:07,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:48:07,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 20:48:07,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:48:07,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:48:07,903 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:48:08,074 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:48:08,076 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:48:09,344 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:48:10,389 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:48:10,389 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:48:10,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:48:10 BoogieIcfgContainer [2022-11-02 20:48:10,393 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:48:10,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:48:10,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:48:10,400 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:48:10,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:48:06" (1/3) ... [2022-11-02 20:48:10,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b4a9f52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:48:10, skipping insertion in model container [2022-11-02 20:48:10,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:07" (2/3) ... [2022-11-02 20:48:10,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b4a9f52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:48:10, skipping insertion in model container [2022-11-02 20:48:10,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:48:10" (3/3) ... [2022-11-02 20:48:10,406 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi002_tso.i [2022-11-02 20:48:10,416 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:48:10,426 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:48:10,426 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-02 20:48:10,426 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:48:10,546 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:48:10,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 114 transitions, 238 flow [2022-11-02 20:48:10,639 INFO L130 PetriNetUnfolder]: 2/112 cut-off events. [2022-11-02 20:48:10,639 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:48:10,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 112 events. 2/112 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 53 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2022-11-02 20:48:10,643 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 114 transitions, 238 flow [2022-11-02 20:48:10,648 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 112 transitions, 230 flow [2022-11-02 20:48:10,658 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:48:10,666 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;@4daf7731, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:48:10,666 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-02 20:48:10,685 INFO L130 PetriNetUnfolder]: 0/74 cut-off events. [2022-11-02 20:48:10,685 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:48:10,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:10,687 INFO L208 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] [2022-11-02 20:48:10,687 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-02 20:48:10,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:10,693 INFO L85 PathProgramCache]: Analyzing trace with hash 391948507, now seen corresponding path program 1 times [2022-11-02 20:48:10,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:10,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981261150] [2022-11-02 20:48:10,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:10,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:10,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:11,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:11,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:11,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981261150] [2022-11-02 20:48:11,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981261150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:11,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:11,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:48:11,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187475093] [2022-11-02 20:48:11,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:11,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:48:11,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:11,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:48:11,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:48:11,487 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 114 [2022-11-02 20:48:11,491 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 112 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:11,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:11,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 114 [2022-11-02 20:48:11,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:11,979 INFO L130 PetriNetUnfolder]: 111/381 cut-off events. [2022-11-02 20:48:11,979 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-02 20:48:11,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 595 conditions, 381 events. 111/381 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1605 event pairs, 9 based on Foata normal form. 20/358 useless extension candidates. Maximal degree in co-relation 532. Up to 175 conditions per place. [2022-11-02 20:48:11,987 INFO L137 encePairwiseOnDemand]: 109/114 looper letters, 17 selfloop transitions, 2 changer transitions 0/113 dead transitions. [2022-11-02 20:48:11,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 113 transitions, 270 flow [2022-11-02 20:48:11,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:48:11,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:48:12,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 312 transitions. [2022-11-02 20:48:12,014 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9122807017543859 [2022-11-02 20:48:12,015 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 312 transitions. [2022-11-02 20:48:12,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 312 transitions. [2022-11-02 20:48:12,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:12,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 312 transitions. [2022-11-02 20:48:12,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:12,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:12,040 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:12,042 INFO L175 Difference]: Start difference. First operand has 117 places, 112 transitions, 230 flow. Second operand 3 states and 312 transitions. [2022-11-02 20:48:12,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 113 transitions, 270 flow [2022-11-02 20:48:12,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 113 transitions, 268 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:48:12,059 INFO L231 Difference]: Finished difference. Result has 115 places, 108 transitions, 224 flow [2022-11-02 20:48:12,062 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=115, PETRI_TRANSITIONS=108} [2022-11-02 20:48:12,068 INFO L287 CegarLoopForPetriNet]: 117 programPoint places, -2 predicate places. [2022-11-02 20:48:12,069 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 108 transitions, 224 flow [2022-11-02 20:48:12,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:12,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:12,072 INFO L208 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] [2022-11-02 20:48:12,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:48:12,073 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-02 20:48:12,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:12,073 INFO L85 PathProgramCache]: Analyzing trace with hash -734495959, now seen corresponding path program 1 times [2022-11-02 20:48:12,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:12,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755995554] [2022-11-02 20:48:12,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:12,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:12,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:12,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:12,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755995554] [2022-11-02 20:48:12,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755995554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:12,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:12,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:48:12,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751973421] [2022-11-02 20:48:12,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:12,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:48:12,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:12,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:48:12,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:48:12,347 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 114 [2022-11-02 20:48:12,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 108 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:12,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:12,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 114 [2022-11-02 20:48:12,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:12,629 INFO L130 PetriNetUnfolder]: 94/419 cut-off events. [2022-11-02 20:48:12,629 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-11-02 20:48:12,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 616 conditions, 419 events. 94/419 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2000 event pairs, 26 based on Foata normal form. 0/388 useless extension candidates. Maximal degree in co-relation 553. Up to 117 conditions per place. [2022-11-02 20:48:12,633 INFO L137 encePairwiseOnDemand]: 111/114 looper letters, 16 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2022-11-02 20:48:12,634 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 112 transitions, 268 flow [2022-11-02 20:48:12,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:48:12,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:48:12,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2022-11-02 20:48:12,639 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8976608187134503 [2022-11-02 20:48:12,639 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2022-11-02 20:48:12,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2022-11-02 20:48:12,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:12,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2022-11-02 20:48:12,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:12,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:12,644 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:12,645 INFO L175 Difference]: Start difference. First operand has 115 places, 108 transitions, 224 flow. Second operand 3 states and 307 transitions. [2022-11-02 20:48:12,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 112 transitions, 268 flow [2022-11-02 20:48:12,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 112 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:48:12,649 INFO L231 Difference]: Finished difference. Result has 114 places, 107 transitions, 222 flow [2022-11-02 20:48:12,650 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=114, PETRI_TRANSITIONS=107} [2022-11-02 20:48:12,650 INFO L287 CegarLoopForPetriNet]: 117 programPoint places, -3 predicate places. [2022-11-02 20:48:12,651 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 107 transitions, 222 flow [2022-11-02 20:48:12,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:12,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:12,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:48:12,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:48:12,652 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-02 20:48:12,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:12,653 INFO L85 PathProgramCache]: Analyzing trace with hash 26389779, now seen corresponding path program 1 times [2022-11-02 20:48:12,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:12,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519875251] [2022-11-02 20:48:12,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:12,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:12,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:13,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:13,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:13,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519875251] [2022-11-02 20:48:13,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519875251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:13,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:13,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:48:13,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62723970] [2022-11-02 20:48:13,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:13,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:48:13,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:13,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:48:13,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:48:13,095 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 114 [2022-11-02 20:48:13,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 107 transitions, 222 flow. Second operand has 6 states, 6 states have (on average 91.66666666666667) internal successors, (550), 6 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:13,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:13,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 114 [2022-11-02 20:48:13,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:14,024 INFO L130 PetriNetUnfolder]: 336/1001 cut-off events. [2022-11-02 20:48:14,024 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-11-02 20:48:14,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1625 conditions, 1001 events. 336/1001 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 6069 event pairs, 82 based on Foata normal form. 0/966 useless extension candidates. Maximal degree in co-relation 1561. Up to 229 conditions per place. [2022-11-02 20:48:14,032 INFO L137 encePairwiseOnDemand]: 108/114 looper letters, 20 selfloop transitions, 2 changer transitions 52/153 dead transitions. [2022-11-02 20:48:14,032 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 153 transitions, 450 flow [2022-11-02 20:48:14,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:48:14,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:48:14,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 877 transitions. [2022-11-02 20:48:14,037 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.854775828460039 [2022-11-02 20:48:14,037 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 877 transitions. [2022-11-02 20:48:14,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 877 transitions. [2022-11-02 20:48:14,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:14,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 877 transitions. [2022-11-02 20:48:14,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 97.44444444444444) internal successors, (877), 9 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:14,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:14,046 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:14,046 INFO L175 Difference]: Start difference. First operand has 114 places, 107 transitions, 222 flow. Second operand 9 states and 877 transitions. [2022-11-02 20:48:14,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 153 transitions, 450 flow [2022-11-02 20:48:14,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 153 transitions, 440 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:48:14,053 INFO L231 Difference]: Finished difference. Result has 127 places, 97 transitions, 218 flow [2022-11-02 20:48:14,054 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=218, PETRI_PLACES=127, PETRI_TRANSITIONS=97} [2022-11-02 20:48:14,056 INFO L287 CegarLoopForPetriNet]: 117 programPoint places, 10 predicate places. [2022-11-02 20:48:14,056 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 97 transitions, 218 flow [2022-11-02 20:48:14,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.66666666666667) internal successors, (550), 6 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:14,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:14,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:48:14,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:48:14,058 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-02 20:48:14,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:14,059 INFO L85 PathProgramCache]: Analyzing trace with hash -705378320, now seen corresponding path program 1 times [2022-11-02 20:48:14,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:14,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764781966] [2022-11-02 20:48:14,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:14,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:14,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:15,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:15,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:15,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764781966] [2022-11-02 20:48:15,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764781966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:15,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:15,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:48:15,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190998455] [2022-11-02 20:48:15,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:15,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:48:15,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:15,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:48:15,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:48:15,472 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 114 [2022-11-02 20:48:15,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 97 transitions, 218 flow. Second operand has 8 states, 8 states have (on average 88.875) internal successors, (711), 8 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:15,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:15,474 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 114 [2022-11-02 20:48:15,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:16,137 INFO L130 PetriNetUnfolder]: 247/608 cut-off events. [2022-11-02 20:48:16,138 INFO L131 PetriNetUnfolder]: For 155/155 co-relation queries the response was YES. [2022-11-02 20:48:16,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1256 conditions, 608 events. 247/608 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2661 event pairs, 154 based on Foata normal form. 15/590 useless extension candidates. Maximal degree in co-relation 1183. Up to 298 conditions per place. [2022-11-02 20:48:16,142 INFO L137 encePairwiseOnDemand]: 105/114 looper letters, 23 selfloop transitions, 5 changer transitions 31/135 dead transitions. [2022-11-02 20:48:16,143 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 135 transitions, 435 flow [2022-11-02 20:48:16,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:48:16,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-02 20:48:16,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1018 transitions. [2022-11-02 20:48:16,169 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8118022328548644 [2022-11-02 20:48:16,170 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1018 transitions. [2022-11-02 20:48:16,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1018 transitions. [2022-11-02 20:48:16,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:16,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1018 transitions. [2022-11-02 20:48:16,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 92.54545454545455) internal successors, (1018), 11 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:16,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 114.0) internal successors, (1368), 12 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:16,177 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 114.0) internal successors, (1368), 12 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:16,178 INFO L175 Difference]: Start difference. First operand has 127 places, 97 transitions, 218 flow. Second operand 11 states and 1018 transitions. [2022-11-02 20:48:16,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 135 transitions, 435 flow [2022-11-02 20:48:16,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 135 transitions, 401 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-11-02 20:48:16,184 INFO L231 Difference]: Finished difference. Result has 120 places, 99 transitions, 249 flow [2022-11-02 20:48:16,185 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=249, PETRI_PLACES=120, PETRI_TRANSITIONS=99} [2022-11-02 20:48:16,185 INFO L287 CegarLoopForPetriNet]: 117 programPoint places, 3 predicate places. [2022-11-02 20:48:16,186 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 99 transitions, 249 flow [2022-11-02 20:48:16,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 88.875) internal successors, (711), 8 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:16,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:16,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:48:16,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:48:16,187 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-02 20:48:16,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:16,188 INFO L85 PathProgramCache]: Analyzing trace with hash -459322686, now seen corresponding path program 1 times [2022-11-02 20:48:16,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:16,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145663351] [2022-11-02 20:48:16,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:16,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:16,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:16,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:16,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:16,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145663351] [2022-11-02 20:48:16,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145663351] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:16,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:16,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:48:16,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431855513] [2022-11-02 20:48:16,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:16,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:48:16,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:16,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:48:16,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:48:16,636 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 114 [2022-11-02 20:48:16,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 99 transitions, 249 flow. Second operand has 6 states, 6 states have (on average 92.33333333333333) internal successors, (554), 6 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:16,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:16,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 114 [2022-11-02 20:48:16,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:17,271 INFO L130 PetriNetUnfolder]: 167/495 cut-off events. [2022-11-02 20:48:17,271 INFO L131 PetriNetUnfolder]: For 473/473 co-relation queries the response was YES. [2022-11-02 20:48:17,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1124 conditions, 495 events. 167/495 cut-off events. For 473/473 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2190 event pairs, 39 based on Foata normal form. 14/485 useless extension candidates. Maximal degree in co-relation 1061. Up to 126 conditions per place. [2022-11-02 20:48:17,275 INFO L137 encePairwiseOnDemand]: 108/114 looper letters, 24 selfloop transitions, 2 changer transitions 28/134 dead transitions. [2022-11-02 20:48:17,276 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 134 transitions, 506 flow [2022-11-02 20:48:17,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:48:17,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:48:17,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 865 transitions. [2022-11-02 20:48:17,280 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8430799220272904 [2022-11-02 20:48:17,280 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 865 transitions. [2022-11-02 20:48:17,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 865 transitions. [2022-11-02 20:48:17,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:17,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 865 transitions. [2022-11-02 20:48:17,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 96.11111111111111) internal successors, (865), 9 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:17,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:17,289 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:17,289 INFO L175 Difference]: Start difference. First operand has 120 places, 99 transitions, 249 flow. Second operand 9 states and 865 transitions. [2022-11-02 20:48:17,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 134 transitions, 506 flow [2022-11-02 20:48:17,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 134 transitions, 483 flow, removed 8 selfloop flow, removed 6 redundant places. [2022-11-02 20:48:17,297 INFO L231 Difference]: Finished difference. Result has 123 places, 99 transitions, 254 flow [2022-11-02 20:48:17,297 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=254, PETRI_PLACES=123, PETRI_TRANSITIONS=99} [2022-11-02 20:48:17,301 INFO L287 CegarLoopForPetriNet]: 117 programPoint places, 6 predicate places. [2022-11-02 20:48:17,301 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 99 transitions, 254 flow [2022-11-02 20:48:17,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.33333333333333) internal successors, (554), 6 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:17,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:17,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:48:17,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:48:17,303 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-02 20:48:17,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:17,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1724920748, now seen corresponding path program 1 times [2022-11-02 20:48:17,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:17,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034566312] [2022-11-02 20:48:17,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:17,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:17,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:20,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:20,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:20,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034566312] [2022-11-02 20:48:20,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034566312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:20,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:20,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-02 20:48:20,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165795155] [2022-11-02 20:48:20,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:20,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 20:48:20,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:20,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 20:48:20,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:48:20,017 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 114 [2022-11-02 20:48:20,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 99 transitions, 254 flow. Second operand has 16 states, 16 states have (on average 79.5625) internal successors, (1273), 16 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:20,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:20,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 114 [2022-11-02 20:48:20,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:21,669 INFO L130 PetriNetUnfolder]: 391/963 cut-off events. [2022-11-02 20:48:21,669 INFO L131 PetriNetUnfolder]: For 849/849 co-relation queries the response was YES. [2022-11-02 20:48:21,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2278 conditions, 963 events. 391/963 cut-off events. For 849/849 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5119 event pairs, 66 based on Foata normal form. 12/934 useless extension candidates. Maximal degree in co-relation 2193. Up to 267 conditions per place. [2022-11-02 20:48:21,676 INFO L137 encePairwiseOnDemand]: 99/114 looper letters, 62 selfloop transitions, 21 changer transitions 38/188 dead transitions. [2022-11-02 20:48:21,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 188 transitions, 833 flow [2022-11-02 20:48:21,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:48:21,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:48:21,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1525 transitions. [2022-11-02 20:48:21,682 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.74317738791423 [2022-11-02 20:48:21,682 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1525 transitions. [2022-11-02 20:48:21,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1525 transitions. [2022-11-02 20:48:21,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:21,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1525 transitions. [2022-11-02 20:48:21,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 84.72222222222223) internal successors, (1525), 18 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:21,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 114.0) internal successors, (2166), 19 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:21,693 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 114.0) internal successors, (2166), 19 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:21,693 INFO L175 Difference]: Start difference. First operand has 123 places, 99 transitions, 254 flow. Second operand 18 states and 1525 transitions. [2022-11-02 20:48:21,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 188 transitions, 833 flow [2022-11-02 20:48:21,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 188 transitions, 773 flow, removed 24 selfloop flow, removed 8 redundant places. [2022-11-02 20:48:21,700 INFO L231 Difference]: Finished difference. Result has 136 places, 116 transitions, 386 flow [2022-11-02 20:48:21,701 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=386, PETRI_PLACES=136, PETRI_TRANSITIONS=116} [2022-11-02 20:48:21,703 INFO L287 CegarLoopForPetriNet]: 117 programPoint places, 19 predicate places. [2022-11-02 20:48:21,704 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 116 transitions, 386 flow [2022-11-02 20:48:21,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 79.5625) internal successors, (1273), 16 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:21,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:21,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:48:21,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:48:21,707 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-02 20:48:21,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:21,708 INFO L85 PathProgramCache]: Analyzing trace with hash 286391218, now seen corresponding path program 2 times [2022-11-02 20:48:21,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:21,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133032634] [2022-11-02 20:48:21,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:21,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:21,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:24,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:24,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:24,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133032634] [2022-11-02 20:48:24,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133032634] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:24,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:24,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-02 20:48:24,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319844706] [2022-11-02 20:48:24,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:24,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 20:48:24,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:24,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 20:48:24,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:48:24,667 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 114 [2022-11-02 20:48:24,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 116 transitions, 386 flow. Second operand has 16 states, 16 states have (on average 80.5) internal successors, (1288), 16 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:24,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:24,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 114 [2022-11-02 20:48:24,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:26,458 INFO L130 PetriNetUnfolder]: 480/1056 cut-off events. [2022-11-02 20:48:26,458 INFO L131 PetriNetUnfolder]: For 2124/2274 co-relation queries the response was YES. [2022-11-02 20:48:26,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3252 conditions, 1056 events. 480/1056 cut-off events. For 2124/2274 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 5637 event pairs, 45 based on Foata normal form. 45/1082 useless extension candidates. Maximal degree in co-relation 3159. Up to 348 conditions per place. [2022-11-02 20:48:26,468 INFO L137 encePairwiseOnDemand]: 95/114 looper letters, 68 selfloop transitions, 42 changer transitions 56/234 dead transitions. [2022-11-02 20:48:26,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 234 transitions, 1380 flow [2022-11-02 20:48:26,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-02 20:48:26,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-02 20:48:26,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2289 transitions. [2022-11-02 20:48:26,474 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7436647173489279 [2022-11-02 20:48:26,474 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2289 transitions. [2022-11-02 20:48:26,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2289 transitions. [2022-11-02 20:48:26,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:26,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2289 transitions. [2022-11-02 20:48:26,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 84.77777777777777) internal successors, (2289), 27 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:26,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 114.0) internal successors, (3192), 28 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:26,488 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 114.0) internal successors, (3192), 28 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:26,488 INFO L175 Difference]: Start difference. First operand has 136 places, 116 transitions, 386 flow. Second operand 27 states and 2289 transitions. [2022-11-02 20:48:26,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 234 transitions, 1380 flow [2022-11-02 20:48:26,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 234 transitions, 1314 flow, removed 30 selfloop flow, removed 6 redundant places. [2022-11-02 20:48:26,500 INFO L231 Difference]: Finished difference. Result has 169 places, 145 transitions, 718 flow [2022-11-02 20:48:26,501 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=718, PETRI_PLACES=169, PETRI_TRANSITIONS=145} [2022-11-02 20:48:26,501 INFO L287 CegarLoopForPetriNet]: 117 programPoint places, 52 predicate places. [2022-11-02 20:48:26,501 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 145 transitions, 718 flow [2022-11-02 20:48:26,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 80.5) internal successors, (1288), 16 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:26,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:26,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:48:26,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:48:26,503 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-02 20:48:26,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:26,504 INFO L85 PathProgramCache]: Analyzing trace with hash -712279958, now seen corresponding path program 3 times [2022-11-02 20:48:26,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:26,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336017898] [2022-11-02 20:48:26,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:26,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:28,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:28,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:28,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336017898] [2022-11-02 20:48:28,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336017898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:28,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:28,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-02 20:48:28,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71998346] [2022-11-02 20:48:28,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:28,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 20:48:28,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:28,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 20:48:28,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:48:28,245 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 114 [2022-11-02 20:48:28,246 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 145 transitions, 718 flow. Second operand has 16 states, 16 states have (on average 80.5) internal successors, (1288), 16 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:28,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:28,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 114 [2022-11-02 20:48:28,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:30,013 INFO L130 PetriNetUnfolder]: 498/1229 cut-off events. [2022-11-02 20:48:30,014 INFO L131 PetriNetUnfolder]: For 4821/4963 co-relation queries the response was YES. [2022-11-02 20:48:30,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4667 conditions, 1229 events. 498/1229 cut-off events. For 4821/4963 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 7295 event pairs, 88 based on Foata normal form. 37/1218 useless extension candidates. Maximal degree in co-relation 4554. Up to 387 conditions per place. [2022-11-02 20:48:30,029 INFO L137 encePairwiseOnDemand]: 96/114 looper letters, 79 selfloop transitions, 40 changer transitions 46/233 dead transitions. [2022-11-02 20:48:30,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 233 transitions, 1783 flow [2022-11-02 20:48:30,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:48:30,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-02 20:48:30,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1957 transitions. [2022-11-02 20:48:30,035 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7463768115942029 [2022-11-02 20:48:30,035 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1957 transitions. [2022-11-02 20:48:30,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1957 transitions. [2022-11-02 20:48:30,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:30,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1957 transitions. [2022-11-02 20:48:30,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 85.08695652173913) internal successors, (1957), 23 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:30,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 114.0) internal successors, (2736), 24 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:30,047 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 114.0) internal successors, (2736), 24 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:30,048 INFO L175 Difference]: Start difference. First operand has 169 places, 145 transitions, 718 flow. Second operand 23 states and 1957 transitions. [2022-11-02 20:48:30,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 233 transitions, 1783 flow [2022-11-02 20:48:30,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 233 transitions, 1634 flow, removed 65 selfloop flow, removed 14 redundant places. [2022-11-02 20:48:30,075 INFO L231 Difference]: Finished difference. Result has 177 places, 156 transitions, 880 flow [2022-11-02 20:48:30,075 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=880, PETRI_PLACES=177, PETRI_TRANSITIONS=156} [2022-11-02 20:48:30,076 INFO L287 CegarLoopForPetriNet]: 117 programPoint places, 60 predicate places. [2022-11-02 20:48:30,076 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 156 transitions, 880 flow [2022-11-02 20:48:30,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 80.5) internal successors, (1288), 16 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:30,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:30,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:48:30,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:48:30,078 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-02 20:48:30,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:30,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1010871054, now seen corresponding path program 4 times [2022-11-02 20:48:30,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:30,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131997559] [2022-11-02 20:48:30,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:30,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:30,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:32,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:32,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:32,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131997559] [2022-11-02 20:48:32,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131997559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:32,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:32,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-02 20:48:32,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437048555] [2022-11-02 20:48:32,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:32,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:48:32,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:32,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:48:32,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:48:32,118 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 114 [2022-11-02 20:48:32,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 156 transitions, 880 flow. Second operand has 13 states, 13 states have (on average 83.76923076923077) internal successors, (1089), 13 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) [2022-11-02 20:48:32,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:32,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 114 [2022-11-02 20:48:32,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:33,304 INFO L130 PetriNetUnfolder]: 302/786 cut-off events. [2022-11-02 20:48:33,305 INFO L131 PetriNetUnfolder]: For 5952/9382 co-relation queries the response was YES. [2022-11-02 20:48:33,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3792 conditions, 786 events. 302/786 cut-off events. For 5952/9382 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4094 event pairs, 77 based on Foata normal form. 68/797 useless extension candidates. Maximal degree in co-relation 3685. Up to 394 conditions per place. [2022-11-02 20:48:33,315 INFO L137 encePairwiseOnDemand]: 101/114 looper letters, 78 selfloop transitions, 26 changer transitions 15/199 dead transitions. [2022-11-02 20:48:33,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 199 transitions, 1664 flow [2022-11-02 20:48:33,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:48:33,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-02 20:48:33,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1215 transitions. [2022-11-02 20:48:33,321 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7612781954887218 [2022-11-02 20:48:33,321 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1215 transitions. [2022-11-02 20:48:33,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1215 transitions. [2022-11-02 20:48:33,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:33,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1215 transitions. [2022-11-02 20:48:33,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 86.78571428571429) internal successors, (1215), 14 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:33,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 114.0) internal successors, (1710), 15 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:33,331 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 114.0) internal successors, (1710), 15 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:33,331 INFO L175 Difference]: Start difference. First operand has 177 places, 156 transitions, 880 flow. Second operand 14 states and 1215 transitions. [2022-11-02 20:48:33,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 199 transitions, 1664 flow [2022-11-02 20:48:33,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 199 transitions, 1549 flow, removed 29 selfloop flow, removed 15 redundant places. [2022-11-02 20:48:33,363 INFO L231 Difference]: Finished difference. Result has 174 places, 168 transitions, 1044 flow [2022-11-02 20:48:33,363 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=786, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1044, PETRI_PLACES=174, PETRI_TRANSITIONS=168} [2022-11-02 20:48:33,364 INFO L287 CegarLoopForPetriNet]: 117 programPoint places, 57 predicate places. [2022-11-02 20:48:33,365 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 168 transitions, 1044 flow [2022-11-02 20:48:33,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 83.76923076923077) internal successors, (1089), 13 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) [2022-11-02 20:48:33,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:33,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:48:33,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:48:33,367 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-02 20:48:33,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:33,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1800691522, now seen corresponding path program 5 times [2022-11-02 20:48:33,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:33,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003389717] [2022-11-02 20:48:33,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:33,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:33,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:35,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:35,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:35,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003389717] [2022-11-02 20:48:35,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003389717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:35,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:35,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-02 20:48:35,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581624819] [2022-11-02 20:48:35,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:35,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-02 20:48:35,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:35,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-02 20:48:35,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:48:35,358 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 114 [2022-11-02 20:48:35,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 168 transitions, 1044 flow. Second operand has 15 states, 15 states have (on average 78.86666666666666) internal successors, (1183), 15 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:35,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:35,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 114 [2022-11-02 20:48:35,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:36,928 INFO L130 PetriNetUnfolder]: 331/845 cut-off events. [2022-11-02 20:48:36,928 INFO L131 PetriNetUnfolder]: For 7515/10521 co-relation queries the response was YES. [2022-11-02 20:48:36,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4204 conditions, 845 events. 331/845 cut-off events. For 7515/10521 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4440 event pairs, 32 based on Foata normal form. 91/889 useless extension candidates. Maximal degree in co-relation 4080. Up to 323 conditions per place. [2022-11-02 20:48:36,941 INFO L137 encePairwiseOnDemand]: 94/114 looper letters, 75 selfloop transitions, 71 changer transitions 33/254 dead transitions. [2022-11-02 20:48:36,941 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 254 transitions, 2383 flow [2022-11-02 20:48:36,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:48:36,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-02 20:48:36,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1630 transitions. [2022-11-02 20:48:36,945 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7149122807017544 [2022-11-02 20:48:36,945 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1630 transitions. [2022-11-02 20:48:36,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1630 transitions. [2022-11-02 20:48:36,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:36,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1630 transitions. [2022-11-02 20:48:36,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 81.5) internal successors, (1630), 20 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:36,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 114.0) internal successors, (2394), 21 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:36,955 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 114.0) internal successors, (2394), 21 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:36,955 INFO L175 Difference]: Start difference. First operand has 174 places, 168 transitions, 1044 flow. Second operand 20 states and 1630 transitions. [2022-11-02 20:48:36,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 254 transitions, 2383 flow [2022-11-02 20:48:36,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 254 transitions, 2171 flow, removed 97 selfloop flow, removed 10 redundant places. [2022-11-02 20:48:36,985 INFO L231 Difference]: Finished difference. Result has 191 places, 214 transitions, 1632 flow [2022-11-02 20:48:36,986 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=950, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1632, PETRI_PLACES=191, PETRI_TRANSITIONS=214} [2022-11-02 20:48:36,987 INFO L287 CegarLoopForPetriNet]: 117 programPoint places, 74 predicate places. [2022-11-02 20:48:36,987 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 214 transitions, 1632 flow [2022-11-02 20:48:36,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 78.86666666666666) internal successors, (1183), 15 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:36,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:36,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:48:36,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:48:36,989 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-02 20:48:36,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:36,990 INFO L85 PathProgramCache]: Analyzing trace with hash -2097019380, now seen corresponding path program 1 times [2022-11-02 20:48:36,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:36,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831378751] [2022-11-02 20:48:36,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:36,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:37,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:39,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:39,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:39,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831378751] [2022-11-02 20:48:39,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831378751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:39,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:39,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-02 20:48:39,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319090128] [2022-11-02 20:48:39,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:39,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:48:39,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:39,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:48:39,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:48:39,604 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 114 [2022-11-02 20:48:39,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 214 transitions, 1632 flow. Second operand has 14 states, 14 states have (on average 84.64285714285714) internal successors, (1185), 14 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:39,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:39,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 114 [2022-11-02 20:48:39,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:40,706 INFO L130 PetriNetUnfolder]: 297/793 cut-off events. [2022-11-02 20:48:40,707 INFO L131 PetriNetUnfolder]: For 7766/18171 co-relation queries the response was YES. [2022-11-02 20:48:40,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4314 conditions, 793 events. 297/793 cut-off events. For 7766/18171 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4207 event pairs, 36 based on Foata normal form. 96/835 useless extension candidates. Maximal degree in co-relation 4187. Up to 323 conditions per place. [2022-11-02 20:48:40,719 INFO L137 encePairwiseOnDemand]: 102/114 looper letters, 117 selfloop transitions, 43 changer transitions 12/253 dead transitions. [2022-11-02 20:48:40,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 253 transitions, 2527 flow [2022-11-02 20:48:40,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:48:40,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-02 20:48:40,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1220 transitions. [2022-11-02 20:48:40,722 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7644110275689223 [2022-11-02 20:48:40,723 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1220 transitions. [2022-11-02 20:48:40,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1220 transitions. [2022-11-02 20:48:40,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:40,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1220 transitions. [2022-11-02 20:48:40,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 87.14285714285714) internal successors, (1220), 14 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:40,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 114.0) internal successors, (1710), 15 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:40,729 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 114.0) internal successors, (1710), 15 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:40,729 INFO L175 Difference]: Start difference. First operand has 191 places, 214 transitions, 1632 flow. Second operand 14 states and 1220 transitions. [2022-11-02 20:48:40,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 253 transitions, 2527 flow [2022-11-02 20:48:40,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 253 transitions, 2361 flow, removed 72 selfloop flow, removed 10 redundant places. [2022-11-02 20:48:40,780 INFO L231 Difference]: Finished difference. Result has 195 places, 220 transitions, 1774 flow [2022-11-02 20:48:40,781 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=1506, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1774, PETRI_PLACES=195, PETRI_TRANSITIONS=220} [2022-11-02 20:48:40,781 INFO L287 CegarLoopForPetriNet]: 117 programPoint places, 78 predicate places. [2022-11-02 20:48:40,782 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 220 transitions, 1774 flow [2022-11-02 20:48:40,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 84.64285714285714) internal successors, (1185), 14 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:40,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:40,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:48:40,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:48:40,784 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-02 20:48:40,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:40,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1749448968, now seen corresponding path program 2 times [2022-11-02 20:48:40,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:40,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026434901] [2022-11-02 20:48:40,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:40,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:43,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:43,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:43,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026434901] [2022-11-02 20:48:43,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026434901] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:43,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:43,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-02 20:48:43,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125800040] [2022-11-02 20:48:43,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:43,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 20:48:43,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:43,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 20:48:43,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:48:43,280 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 114 [2022-11-02 20:48:43,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 220 transitions, 1774 flow. Second operand has 17 states, 17 states have (on average 81.41176470588235) internal successors, (1384), 17 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:43,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:43,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 114 [2022-11-02 20:48:43,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:45,169 INFO L130 PetriNetUnfolder]: 544/1288 cut-off events. [2022-11-02 20:48:45,169 INFO L131 PetriNetUnfolder]: For 11659/14441 co-relation queries the response was YES. [2022-11-02 20:48:45,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6579 conditions, 1288 events. 544/1288 cut-off events. For 11659/14441 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 7737 event pairs, 54 based on Foata normal form. 90/1340 useless extension candidates. Maximal degree in co-relation 6450. Up to 321 conditions per place. [2022-11-02 20:48:45,193 INFO L137 encePairwiseOnDemand]: 98/114 looper letters, 133 selfloop transitions, 55 changer transitions 53/310 dead transitions. [2022-11-02 20:48:45,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 310 transitions, 3344 flow [2022-11-02 20:48:45,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-02 20:48:45,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-02 20:48:45,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2205 transitions. [2022-11-02 20:48:45,197 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7439271255060729 [2022-11-02 20:48:45,198 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2205 transitions. [2022-11-02 20:48:45,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2205 transitions. [2022-11-02 20:48:45,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:45,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2205 transitions. [2022-11-02 20:48:45,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 84.8076923076923) internal successors, (2205), 26 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:45,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 114.0) internal successors, (3078), 27 states have internal predecessors, (3078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:45,209 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 114.0) internal successors, (3078), 27 states have internal predecessors, (3078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:45,210 INFO L175 Difference]: Start difference. First operand has 195 places, 220 transitions, 1774 flow. Second operand 26 states and 2205 transitions. [2022-11-02 20:48:45,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 310 transitions, 3344 flow [2022-11-02 20:48:45,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 310 transitions, 3176 flow, removed 64 selfloop flow, removed 8 redundant places. [2022-11-02 20:48:45,274 INFO L231 Difference]: Finished difference. Result has 223 places, 218 transitions, 1875 flow [2022-11-02 20:48:45,274 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=1662, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1875, PETRI_PLACES=223, PETRI_TRANSITIONS=218} [2022-11-02 20:48:45,275 INFO L287 CegarLoopForPetriNet]: 117 programPoint places, 106 predicate places. [2022-11-02 20:48:45,275 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 218 transitions, 1875 flow [2022-11-02 20:48:45,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 81.41176470588235) internal successors, (1384), 17 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:45,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:45,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:48:45,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:48:45,277 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-02 20:48:45,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:45,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1610177280, now seen corresponding path program 1 times [2022-11-02 20:48:45,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:45,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983262190] [2022-11-02 20:48:45,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:45,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:45,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:45,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:45,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:45,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983262190] [2022-11-02 20:48:45,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983262190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:45,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:45,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:48:45,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323212507] [2022-11-02 20:48:45,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:45,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:48:45,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:45,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:48:45,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:48:45,927 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 114 [2022-11-02 20:48:45,928 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 218 transitions, 1875 flow. Second operand has 7 states, 7 states have (on average 89.71428571428571) internal successors, (628), 7 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:45,928 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:45,928 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 114 [2022-11-02 20:48:45,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:46,770 INFO L130 PetriNetUnfolder]: 336/909 cut-off events. [2022-11-02 20:48:46,770 INFO L131 PetriNetUnfolder]: For 11658/27041 co-relation queries the response was YES. [2022-11-02 20:48:46,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5174 conditions, 909 events. 336/909 cut-off events. For 11658/27041 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5296 event pairs, 29 based on Foata normal form. 79/944 useless extension candidates. Maximal degree in co-relation 5034. Up to 422 conditions per place. [2022-11-02 20:48:46,786 INFO L137 encePairwiseOnDemand]: 104/114 looper letters, 99 selfloop transitions, 27 changer transitions 39/254 dead transitions. [2022-11-02 20:48:46,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 254 transitions, 2556 flow [2022-11-02 20:48:46,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:48:46,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:48:46,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 653 transitions. [2022-11-02 20:48:46,789 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.818295739348371 [2022-11-02 20:48:46,789 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 653 transitions. [2022-11-02 20:48:46,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 653 transitions. [2022-11-02 20:48:46,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:46,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 653 transitions. [2022-11-02 20:48:46,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 93.28571428571429) internal successors, (653), 7 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:46,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:46,793 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:46,793 INFO L175 Difference]: Start difference. First operand has 223 places, 218 transitions, 1875 flow. Second operand 7 states and 653 transitions. [2022-11-02 20:48:46,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 254 transitions, 2556 flow [2022-11-02 20:48:46,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 254 transitions, 2357 flow, removed 76 selfloop flow, removed 26 redundant places. [2022-11-02 20:48:46,857 INFO L231 Difference]: Finished difference. Result has 190 places, 211 transitions, 1710 flow [2022-11-02 20:48:46,857 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=1702, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1710, PETRI_PLACES=190, PETRI_TRANSITIONS=211} [2022-11-02 20:48:46,858 INFO L287 CegarLoopForPetriNet]: 117 programPoint places, 73 predicate places. [2022-11-02 20:48:46,858 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 211 transitions, 1710 flow [2022-11-02 20:48:46,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.71428571428571) internal successors, (628), 7 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:46,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:46,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:48:46,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:48:46,859 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-02 20:48:46,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:46,860 INFO L85 PathProgramCache]: Analyzing trace with hash 169458592, now seen corresponding path program 2 times [2022-11-02 20:48:46,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:46,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684819864] [2022-11-02 20:48:46,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:46,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:49,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:49,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:49,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684819864] [2022-11-02 20:48:49,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684819864] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:49,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:49,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-02 20:48:49,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850555007] [2022-11-02 20:48:49,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:49,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 20:48:49,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:49,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 20:48:49,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:48:49,333 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 114 [2022-11-02 20:48:49,335 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 211 transitions, 1710 flow. Second operand has 17 states, 17 states have (on average 79.52941176470588) internal successors, (1352), 17 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:49,335 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:49,335 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 114 [2022-11-02 20:48:49,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:51,155 INFO L130 PetriNetUnfolder]: 498/1264 cut-off events. [2022-11-02 20:48:51,155 INFO L131 PetriNetUnfolder]: For 10046/11133 co-relation queries the response was YES. [2022-11-02 20:48:51,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6244 conditions, 1264 events. 498/1264 cut-off events. For 10046/11133 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7842 event pairs, 43 based on Foata normal form. 115/1349 useless extension candidates. Maximal degree in co-relation 6133. Up to 442 conditions per place. [2022-11-02 20:48:51,171 INFO L137 encePairwiseOnDemand]: 95/114 looper letters, 145 selfloop transitions, 39 changer transitions 50/301 dead transitions. [2022-11-02 20:48:51,171 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 301 transitions, 3056 flow [2022-11-02 20:48:51,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-02 20:48:51,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-02 20:48:51,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2089 transitions. [2022-11-02 20:48:51,178 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7329824561403508 [2022-11-02 20:48:51,178 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2089 transitions. [2022-11-02 20:48:51,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2089 transitions. [2022-11-02 20:48:51,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:51,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2089 transitions. [2022-11-02 20:48:51,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 83.56) internal successors, (2089), 25 states have internal predecessors, (2089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:51,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 114.0) internal successors, (2964), 26 states have internal predecessors, (2964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:51,196 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 114.0) internal successors, (2964), 26 states have internal predecessors, (2964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:51,196 INFO L175 Difference]: Start difference. First operand has 190 places, 211 transitions, 1710 flow. Second operand 25 states and 2089 transitions. [2022-11-02 20:48:51,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 301 transitions, 3056 flow [2022-11-02 20:48:51,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 301 transitions, 2927 flow, removed 42 selfloop flow, removed 12 redundant places. [2022-11-02 20:48:51,235 INFO L231 Difference]: Finished difference. Result has 212 places, 218 transitions, 1860 flow [2022-11-02 20:48:51,235 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=1638, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1860, PETRI_PLACES=212, PETRI_TRANSITIONS=218} [2022-11-02 20:48:51,236 INFO L287 CegarLoopForPetriNet]: 117 programPoint places, 95 predicate places. [2022-11-02 20:48:51,236 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 218 transitions, 1860 flow [2022-11-02 20:48:51,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 79.52941176470588) internal successors, (1352), 17 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:51,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:51,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:48:51,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:48:51,237 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-02 20:48:51,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:51,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1173581724, now seen corresponding path program 3 times [2022-11-02 20:48:51,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:51,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502534806] [2022-11-02 20:48:51,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:51,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:52,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:52,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:52,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502534806] [2022-11-02 20:48:52,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502534806] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:52,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:52,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-02 20:48:52,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914914926] [2022-11-02 20:48:52,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:52,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:48:52,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:52,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:48:52,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:48:52,828 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 114 [2022-11-02 20:48:52,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 218 transitions, 1860 flow. Second operand has 13 states, 13 states have (on average 82.92307692307692) internal successors, (1078), 13 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:52,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:52,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 114 [2022-11-02 20:48:52,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:53,894 INFO L130 PetriNetUnfolder]: 299/842 cut-off events. [2022-11-02 20:48:53,894 INFO L131 PetriNetUnfolder]: For 12276/23791 co-relation queries the response was YES. [2022-11-02 20:48:53,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5218 conditions, 842 events. 299/842 cut-off events. For 12276/23791 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4750 event pairs, 25 based on Foata normal form. 166/957 useless extension candidates. Maximal degree in co-relation 5081. Up to 381 conditions per place. [2022-11-02 20:48:53,906 INFO L137 encePairwiseOnDemand]: 101/114 looper letters, 124 selfloop transitions, 34 changer transitions 21/258 dead transitions. [2022-11-02 20:48:53,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 258 transitions, 2790 flow [2022-11-02 20:48:53,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:48:53,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-02 20:48:53,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1037 transitions. [2022-11-02 20:48:53,910 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7580409356725146 [2022-11-02 20:48:53,910 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1037 transitions. [2022-11-02 20:48:53,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1037 transitions. [2022-11-02 20:48:53,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:53,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1037 transitions. [2022-11-02 20:48:53,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 86.41666666666667) internal successors, (1037), 12 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:53,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 114.0) internal successors, (1482), 13 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:53,917 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 114.0) internal successors, (1482), 13 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:53,917 INFO L175 Difference]: Start difference. First operand has 212 places, 218 transitions, 1860 flow. Second operand 12 states and 1037 transitions. [2022-11-02 20:48:53,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 258 transitions, 2790 flow [2022-11-02 20:48:53,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 258 transitions, 2634 flow, removed 53 selfloop flow, removed 17 redundant places. [2022-11-02 20:48:53,960 INFO L231 Difference]: Finished difference. Result has 199 places, 216 transitions, 1804 flow [2022-11-02 20:48:53,961 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=1751, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1804, PETRI_PLACES=199, PETRI_TRANSITIONS=216} [2022-11-02 20:48:53,961 INFO L287 CegarLoopForPetriNet]: 117 programPoint places, 82 predicate places. [2022-11-02 20:48:53,961 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 216 transitions, 1804 flow [2022-11-02 20:48:53,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 82.92307692307692) internal successors, (1078), 13 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:53,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:53,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:48:53,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 20:48:53,963 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-02 20:48:53,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:53,963 INFO L85 PathProgramCache]: Analyzing trace with hash -260803460, now seen corresponding path program 4 times [2022-11-02 20:48:53,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:53,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626296872] [2022-11-02 20:48:53,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:53,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:54,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:55,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:55,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:55,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626296872] [2022-11-02 20:48:55,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626296872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:55,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:55,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:48:55,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165168321] [2022-11-02 20:48:55,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:55,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:48:55,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:55,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:48:55,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:48:55,076 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 114 [2022-11-02 20:48:55,077 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 216 transitions, 1804 flow. Second operand has 9 states, 9 states have (on average 85.55555555555556) internal successors, (770), 9 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:55,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:55,077 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 114 [2022-11-02 20:48:55,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:56,089 INFO L130 PetriNetUnfolder]: 303/946 cut-off events. [2022-11-02 20:48:56,089 INFO L131 PetriNetUnfolder]: For 11104/27611 co-relation queries the response was YES. [2022-11-02 20:48:56,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5314 conditions, 946 events. 303/946 cut-off events. For 11104/27611 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6094 event pairs, 27 based on Foata normal form. 112/1022 useless extension candidates. Maximal degree in co-relation 5184. Up to 384 conditions per place. [2022-11-02 20:48:56,111 INFO L137 encePairwiseOnDemand]: 104/114 looper letters, 112 selfloop transitions, 41 changer transitions 28/262 dead transitions. [2022-11-02 20:48:56,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 262 transitions, 2835 flow [2022-11-02 20:48:56,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:48:56,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:48:56,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 798 transitions. [2022-11-02 20:48:56,117 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2022-11-02 20:48:56,117 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 798 transitions. [2022-11-02 20:48:56,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 798 transitions. [2022-11-02 20:48:56,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:56,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 798 transitions. [2022-11-02 20:48:56,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 88.66666666666667) internal successors, (798), 9 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:56,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:56,122 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:56,122 INFO L175 Difference]: Start difference. First operand has 199 places, 216 transitions, 1804 flow. Second operand 9 states and 798 transitions. [2022-11-02 20:48:56,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 262 transitions, 2835 flow [2022-11-02 20:48:56,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 262 transitions, 2728 flow, removed 27 selfloop flow, removed 10 redundant places. [2022-11-02 20:48:56,167 INFO L231 Difference]: Finished difference. Result has 199 places, 226 transitions, 2004 flow [2022-11-02 20:48:56,168 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=1711, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2004, PETRI_PLACES=199, PETRI_TRANSITIONS=226} [2022-11-02 20:48:56,168 INFO L287 CegarLoopForPetriNet]: 117 programPoint places, 82 predicate places. [2022-11-02 20:48:56,169 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 226 transitions, 2004 flow [2022-11-02 20:48:56,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 85.55555555555556) internal successors, (770), 9 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:56,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:56,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:48:56,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 20:48:56,170 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-02 20:48:56,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:56,170 INFO L85 PathProgramCache]: Analyzing trace with hash 2063786918, now seen corresponding path program 5 times [2022-11-02 20:48:56,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:56,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646495714] [2022-11-02 20:48:56,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:56,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:57,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:57,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:57,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646495714] [2022-11-02 20:48:57,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646495714] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:57,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:57,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-02 20:48:57,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922935967] [2022-11-02 20:48:57,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:57,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:48:57,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:57,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:48:57,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:48:57,365 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 114 [2022-11-02 20:48:57,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 226 transitions, 2004 flow. Second operand has 13 states, 13 states have (on average 85.6923076923077) internal successors, (1114), 13 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:57,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:57,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 114 [2022-11-02 20:48:57,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:58,301 INFO L130 PetriNetUnfolder]: 254/818 cut-off events. [2022-11-02 20:48:58,301 INFO L131 PetriNetUnfolder]: For 9948/29504 co-relation queries the response was YES. [2022-11-02 20:48:58,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4568 conditions, 818 events. 254/818 cut-off events. For 9948/29504 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5030 event pairs, 18 based on Foata normal form. 102/888 useless extension candidates. Maximal degree in co-relation 4439. Up to 315 conditions per place. [2022-11-02 20:48:58,306 INFO L137 encePairwiseOnDemand]: 105/114 looper letters, 54 selfloop transitions, 6 changer transitions 111/248 dead transitions. [2022-11-02 20:48:58,306 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 248 transitions, 2687 flow [2022-11-02 20:48:58,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:48:58,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 20:48:58,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 887 transitions. [2022-11-02 20:48:58,309 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7780701754385965 [2022-11-02 20:48:58,309 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 887 transitions. [2022-11-02 20:48:58,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 887 transitions. [2022-11-02 20:48:58,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:58,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 887 transitions. [2022-11-02 20:48:58,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 88.7) internal successors, (887), 10 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:58,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 114.0) internal successors, (1254), 11 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:58,314 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 114.0) internal successors, (1254), 11 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:58,314 INFO L175 Difference]: Start difference. First operand has 199 places, 226 transitions, 2004 flow. Second operand 10 states and 887 transitions. [2022-11-02 20:48:58,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 248 transitions, 2687 flow [2022-11-02 20:48:58,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 248 transitions, 2564 flow, removed 57 selfloop flow, removed 6 redundant places. [2022-11-02 20:48:58,349 INFO L231 Difference]: Finished difference. Result has 202 places, 133 transitions, 814 flow [2022-11-02 20:48:58,350 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=1921, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=814, PETRI_PLACES=202, PETRI_TRANSITIONS=133} [2022-11-02 20:48:58,350 INFO L287 CegarLoopForPetriNet]: 117 programPoint places, 85 predicate places. [2022-11-02 20:48:58,350 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 133 transitions, 814 flow [2022-11-02 20:48:58,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 85.6923076923077) internal successors, (1114), 13 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:58,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:58,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:48:58,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 20:48:58,352 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-02 20:48:58,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:58,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1147501716, now seen corresponding path program 3 times [2022-11-02 20:48:58,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:58,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364541089] [2022-11-02 20:48:58,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:58,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:00,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:49:00,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:49:00,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364541089] [2022-11-02 20:49:00,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364541089] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:49:00,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:49:00,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-02 20:49:00,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737892215] [2022-11-02 20:49:00,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:49:00,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 20:49:00,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:49:00,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 20:49:00,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:49:00,422 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 114 [2022-11-02 20:49:00,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 133 transitions, 814 flow. Second operand has 17 states, 17 states have (on average 78.58823529411765) internal successors, (1336), 17 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:49:00,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:49:00,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 114 [2022-11-02 20:49:00,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:49:01,616 INFO L130 PetriNetUnfolder]: 153/469 cut-off events. [2022-11-02 20:49:01,616 INFO L131 PetriNetUnfolder]: For 4113/4434 co-relation queries the response was YES. [2022-11-02 20:49:01,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2208 conditions, 469 events. 153/469 cut-off events. For 4113/4434 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2216 event pairs, 0 based on Foata normal form. 46/514 useless extension candidates. Maximal degree in co-relation 2158. Up to 114 conditions per place. [2022-11-02 20:49:01,619 INFO L137 encePairwiseOnDemand]: 100/114 looper letters, 0 selfloop transitions, 0 changer transitions 191/191 dead transitions. [2022-11-02 20:49:01,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 191 transitions, 1832 flow [2022-11-02 20:49:01,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:49:01,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-02 20:49:01,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1786 transitions. [2022-11-02 20:49:01,622 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7121212121212122 [2022-11-02 20:49:01,623 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1786 transitions. [2022-11-02 20:49:01,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1786 transitions. [2022-11-02 20:49:01,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:49:01,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1786 transitions. [2022-11-02 20:49:01,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 81.18181818181819) internal successors, (1786), 22 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:49:01,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 114.0) internal successors, (2622), 23 states have internal predecessors, (2622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:49:01,632 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 114.0) internal successors, (2622), 23 states have internal predecessors, (2622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:49:01,632 INFO L175 Difference]: Start difference. First operand has 202 places, 133 transitions, 814 flow. Second operand 22 states and 1786 transitions. [2022-11-02 20:49:01,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 191 transitions, 1832 flow [2022-11-02 20:49:01,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 191 transitions, 1338 flow, removed 188 selfloop flow, removed 34 redundant places. [2022-11-02 20:49:01,648 INFO L231 Difference]: Finished difference. Result has 160 places, 0 transitions, 0 flow [2022-11-02 20:49:01,648 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=0, PETRI_PLACES=160, PETRI_TRANSITIONS=0} [2022-11-02 20:49:01,649 INFO L287 CegarLoopForPetriNet]: 117 programPoint places, 43 predicate places. [2022-11-02 20:49:01,649 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 0 transitions, 0 flow [2022-11-02 20:49:01,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 78.58823529411765) internal successors, (1336), 17 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:49:01,652 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-11-02 20:49:01,653 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-11-02 20:49:01,653 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2022-11-02 20:49:01,653 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2022-11-02 20:49:01,654 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2022-11-02 20:49:01,654 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-11-02 20:49:01,654 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-11-02 20:49:01,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 20:49:01,654 INFO L444 BasicCegarLoop]: Path program histogram: [5, 5, 3, 1, 1, 1, 1, 1] [2022-11-02 20:49:01,660 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-02 20:49:01,660 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:49:01,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:49:01 BasicIcfg [2022-11-02 20:49:01,665 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:49:01,666 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:49:01,666 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:49:01,666 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:49:01,667 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:48:10" (3/4) ... [2022-11-02 20:49:01,670 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-02 20:49:01,675 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-02 20:49:01,675 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-02 20:49:01,683 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 139 nodes and edges [2022-11-02 20:49:01,684 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 30 nodes and edges [2022-11-02 20:49:01,685 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-11-02 20:49:01,685 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-02 20:49:01,759 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51e16e5-a107-48d3-b566-66207eafe216/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 20:49:01,759 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:49:01,760 INFO L158 Benchmark]: Toolchain (without parser) took 54962.03ms. Allocated memory was 138.4MB in the beginning and 987.8MB in the end (delta: 849.3MB). Free memory was 100.0MB in the beginning and 720.6MB in the end (delta: -620.5MB). Peak memory consumption was 227.5MB. Max. memory is 16.1GB. [2022-11-02 20:49:01,760 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 138.4MB. Free memory is still 118.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:49:01,761 INFO L158 Benchmark]: CACSL2BoogieTranslator took 725.68ms. Allocated memory is still 138.4MB. Free memory was 99.8MB in the beginning and 95.2MB in the end (delta: 4.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 20:49:01,761 INFO L158 Benchmark]: Boogie Procedure Inliner took 145.34ms. Allocated memory is still 138.4MB. Free memory was 95.2MB in the beginning and 91.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 20:49:01,761 INFO L158 Benchmark]: Boogie Preprocessor took 111.13ms. Allocated memory is still 138.4MB. Free memory was 91.1MB in the beginning and 87.3MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 20:49:01,762 INFO L158 Benchmark]: RCFGBuilder took 2609.14ms. Allocated memory was 138.4MB in the beginning and 180.4MB in the end (delta: 41.9MB). Free memory was 87.3MB in the beginning and 140.5MB in the end (delta: -53.2MB). Peak memory consumption was 74.5MB. Max. memory is 16.1GB. [2022-11-02 20:49:01,762 INFO L158 Benchmark]: TraceAbstraction took 51269.70ms. Allocated memory was 180.4MB in the beginning and 987.8MB in the end (delta: 807.4MB). Free memory was 139.5MB in the beginning and 726.8MB in the end (delta: -587.4MB). Peak memory consumption was 222.1MB. Max. memory is 16.1GB. [2022-11-02 20:49:01,762 INFO L158 Benchmark]: Witness Printer took 93.35ms. Allocated memory is still 987.8MB. Free memory was 726.8MB in the beginning and 720.6MB in the end (delta: 6.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 20:49:01,765 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 138.4MB. Free memory is still 118.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 725.68ms. Allocated memory is still 138.4MB. Free memory was 99.8MB in the beginning and 95.2MB in the end (delta: 4.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 145.34ms. Allocated memory is still 138.4MB. Free memory was 95.2MB in the beginning and 91.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 111.13ms. Allocated memory is still 138.4MB. Free memory was 91.1MB in the beginning and 87.3MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 2609.14ms. Allocated memory was 138.4MB in the beginning and 180.4MB in the end (delta: 41.9MB). Free memory was 87.3MB in the beginning and 140.5MB in the end (delta: -53.2MB). Peak memory consumption was 74.5MB. Max. memory is 16.1GB. * TraceAbstraction took 51269.70ms. Allocated memory was 180.4MB in the beginning and 987.8MB in the end (delta: 807.4MB). Free memory was 139.5MB in the beginning and 726.8MB in the end (delta: -587.4MB). Peak memory consumption was 222.1MB. Max. memory is 16.1GB. * Witness Printer took 93.35ms. Allocated memory is still 987.8MB. Free memory was 726.8MB in the beginning and 720.6MB in the end (delta: 6.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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, 136 locations, 7 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: 51.1s, OverallIterations: 18, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 21.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 993 SdHoareTripleChecker+Valid, 9.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 993 mSDsluCounter, 1366 SdHoareTripleChecker+Invalid, 7.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2226 mSDsCounter, 588 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5241 IncrementalHoareTripleChecker+Invalid, 5829 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 588 mSolverCounterUnsat, 197 mSDtfsCounter, 5241 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 355 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 316 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1433 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2004occurred in iteration=16, InterpolantAutomatonStates: 262, 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, 1.3s SatisfiabilityAnalysisTime, 27.0s InterpolantComputationTime, 1514 NumberOfCodeBlocks, 1514 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 1496 ConstructedInterpolants, 0 QuantifiedInterpolants, 13893 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-02 20:49:01,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51e16e5-a107-48d3-b566-66207eafe216/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE