./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa --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 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:49:14,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:49:14,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:49:14,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:49:14,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:49:14,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:49:14,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:49:14,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:49:14,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:49:14,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:49:14,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:49:14,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:49:14,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:49:14,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:49:14,510 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:49:14,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:49:14,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:49:14,514 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:49:14,516 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:49:14,518 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:49:14,520 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:49:14,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:49:14,523 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:49:14,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:49:14,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:49:14,528 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:49:14,528 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:49:14,529 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:49:14,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:49:14,531 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:49:14,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:49:14,532 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:49:14,533 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:49:14,533 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:49:14,534 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:49:14,535 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:49:14,535 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:49:14,535 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:49:14,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:49:14,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:49:14,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:49:14,537 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 18:49:14,554 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:49:14,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:49:14,555 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:49:14,555 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:49:14,555 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:49:14,555 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:49:14,556 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:49:14,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:49:14,556 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:49:14,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:49:14,556 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:49:14,556 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:49:14,556 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:49:14,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:49:14,557 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 18:49:14,557 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:49:14,557 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 18:49:14,557 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:49:14,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 18:49:14,557 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:49:14,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 18:49:14,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:49:14,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:49:14,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:49:14,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:49:14,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:49:14,558 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:49:14,558 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 18:49:14,558 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 18:49:14,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 18:49:14,558 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 18:49:14,558 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 18:49:14,559 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 18:49:14,559 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:49:14,559 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_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a [2021-12-06 18:49:14,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:49:14,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:49:14,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:49:14,748 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:49:14,749 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:49:14,750 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2021-12-06 18:49:14,801 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/data/680134e64/3bdd84ac76f14cc4948f3183d336811e/FLAG06c66b6ce [2021-12-06 18:49:15,266 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:49:15,266 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2021-12-06 18:49:15,283 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/data/680134e64/3bdd84ac76f14cc4948f3183d336811e/FLAG06c66b6ce [2021-12-06 18:49:15,296 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/data/680134e64/3bdd84ac76f14cc4948f3183d336811e [2021-12-06 18:49:15,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:49:15,300 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:49:15,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:49:15,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:49:15,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:49:15,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:49:15" (1/1) ... [2021-12-06 18:49:15,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fd728f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:49:15, skipping insertion in model container [2021-12-06 18:49:15,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:49:15" (1/1) ... [2021-12-06 18:49:15,312 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:49:15,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:49:15,467 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_2ff28af8-c0f6-4923-8fe2-878703373c7f/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2021-12-06 18:49:15,694 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:49:15,705 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:49:15,713 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_2ff28af8-c0f6-4923-8fe2-878703373c7f/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2021-12-06 18:49:15,747 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:49:15,829 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:49:15,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:49:15 WrapperNode [2021-12-06 18:49:15,830 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:49:15,831 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:49:15,831 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:49:15,831 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:49:15,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:49:15" (1/1) ... [2021-12-06 18:49:15,858 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:49:15" (1/1) ... [2021-12-06 18:49:15,881 INFO L137 Inliner]: procedures = 364, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2021-12-06 18:49:15,881 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:49:15,882 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:49:15,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:49:15,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:49:15,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:49:15" (1/1) ... [2021-12-06 18:49:15,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:49:15" (1/1) ... [2021-12-06 18:49:15,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:49:15" (1/1) ... [2021-12-06 18:49:15,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:49:15" (1/1) ... [2021-12-06 18:49:15,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:49:15" (1/1) ... [2021-12-06 18:49:15,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:49:15" (1/1) ... [2021-12-06 18:49:15,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:49:15" (1/1) ... [2021-12-06 18:49:15,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:49:15,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:49:15,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:49:15,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:49:15,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:49:15" (1/1) ... [2021-12-06 18:49:15,916 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:49:15,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:49:15,937 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:49:15,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:49:15,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 18:49:15,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 18:49:15,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 18:49:15,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 18:49:15,969 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-12-06 18:49:15,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:49:15,969 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2021-12-06 18:49:15,969 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2021-12-06 18:49:15,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 18:49:15,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:49:15,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:49:15,971 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-06 18:49:16,057 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:49:16,058 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:49:16,178 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:49:16,185 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:49:16,185 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 18:49:16,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:49:16 BoogieIcfgContainer [2021-12-06 18:49:16,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:49:16,189 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:49:16,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:49:16,192 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:49:16,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:49:15" (1/3) ... [2021-12-06 18:49:16,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65764d1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:49:16, skipping insertion in model container [2021-12-06 18:49:16,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:49:15" (2/3) ... [2021-12-06 18:49:16,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65764d1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:49:16, skipping insertion in model container [2021-12-06 18:49:16,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:49:16" (3/3) ... [2021-12-06 18:49:16,195 INFO L111 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2021-12-06 18:49:16,198 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-06 18:49:16,198 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:49:16,199 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 18:49:16,199 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-06 18:49:16,220 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,220 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,220 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,220 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,221 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,221 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,221 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,221 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,222 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,222 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,222 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,222 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,222 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,223 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,223 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,223 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,223 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,224 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,224 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,224 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,224 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,224 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,224 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,225 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,225 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,225 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,225 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,226 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,226 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,226 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,226 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,226 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,227 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,227 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,227 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,227 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,227 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,228 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,228 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,228 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,228 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,228 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,229 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,229 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,229 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,229 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,232 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,232 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,233 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,233 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,233 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,233 WARN L322 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,233 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,233 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,234 WARN L322 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 18:49:16,238 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-12-06 18:49:16,290 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:49:16,297 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 18:49:16,297 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-06 18:49:16,310 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 94 places, 97 transitions, 202 flow [2021-12-06 18:49:16,345 INFO L129 PetriNetUnfolder]: 7/96 cut-off events. [2021-12-06 18:49:16,345 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-12-06 18:49:16,348 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 96 events. 7/96 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 82 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2021-12-06 18:49:16,348 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 97 transitions, 202 flow [2021-12-06 18:49:16,352 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 86 transitions, 178 flow [2021-12-06 18:49:16,369 INFO L129 PetriNetUnfolder]: 6/85 cut-off events. [2021-12-06 18:49:16,369 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-12-06 18:49:16,370 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:49:16,370 INFO L254 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] [2021-12-06 18:49:16,371 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-06 18:49:16,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:49:16,375 INFO L85 PathProgramCache]: Analyzing trace with hash 730854198, now seen corresponding path program 1 times [2021-12-06 18:49:16,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:49:16,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628272870] [2021-12-06 18:49:16,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:49:16,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:49:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:49:16,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:49:16,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:49:16,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628272870] [2021-12-06 18:49:16,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628272870] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:49:16,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:49:16,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:49:16,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888478270] [2021-12-06 18:49:16,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:49:16,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 18:49:16,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:49:16,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 18:49:16,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 18:49:16,575 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 97 [2021-12-06 18:49:16,577 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 86 transitions, 178 flow. Second operand has 2 states, 2 states have (on average 89.0) internal successors, (178), 2 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:16,577 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:49:16,577 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 97 [2021-12-06 18:49:16,578 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:49:16,598 INFO L129 PetriNetUnfolder]: 2/80 cut-off events. [2021-12-06 18:49:16,598 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-12-06 18:49:16,598 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 80 events. 2/80 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 0 based on Foata normal form. 4/81 useless extension candidates. Maximal degree in co-relation 35. Up to 3 conditions per place. [2021-12-06 18:49:16,599 INFO L132 encePairwiseOnDemand]: 93/97 looper letters, 2 selfloop transitions, 0 changer transitions 0/80 dead transitions. [2021-12-06 18:49:16,599 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 80 transitions, 170 flow [2021-12-06 18:49:16,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 18:49:16,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-06 18:49:16,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 180 transitions. [2021-12-06 18:49:16,609 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9278350515463918 [2021-12-06 18:49:16,609 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 180 transitions. [2021-12-06 18:49:16,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 180 transitions. [2021-12-06 18:49:16,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:49:16,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 180 transitions. [2021-12-06 18:49:16,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 90.0) internal successors, (180), 2 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:16,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:16,619 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:16,620 INFO L186 Difference]: Start difference. First operand has 84 places, 86 transitions, 178 flow. Second operand 2 states and 180 transitions. [2021-12-06 18:49:16,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 80 transitions, 170 flow [2021-12-06 18:49:16,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 80 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-06 18:49:16,626 INFO L242 Difference]: Finished difference. Result has 81 places, 80 transitions, 162 flow [2021-12-06 18:49:16,627 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=162, PETRI_PLACES=81, PETRI_TRANSITIONS=80} [2021-12-06 18:49:16,630 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, -3 predicate places. [2021-12-06 18:49:16,630 INFO L470 AbstractCegarLoop]: Abstraction has has 81 places, 80 transitions, 162 flow [2021-12-06 18:49:16,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 89.0) internal successors, (178), 2 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:16,631 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:49:16,631 INFO L254 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] [2021-12-06 18:49:16,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 18:49:16,631 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-06 18:49:16,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:49:16,632 INFO L85 PathProgramCache]: Analyzing trace with hash -137135436, now seen corresponding path program 1 times [2021-12-06 18:49:16,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:49:16,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059921163] [2021-12-06 18:49:16,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:49:16,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:49:16,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:49:16,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:49:16,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:49:16,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059921163] [2021-12-06 18:49:16,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059921163] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:49:16,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:49:16,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:49:16,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699349521] [2021-12-06 18:49:16,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:49:16,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:49:16,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:49:16,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:49:16,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:49:16,700 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 97 [2021-12-06 18:49:16,700 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 80 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:16,701 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:49:16,701 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 97 [2021-12-06 18:49:16,701 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:49:16,727 INFO L129 PetriNetUnfolder]: 2/87 cut-off events. [2021-12-06 18:49:16,727 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-12-06 18:49:16,728 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 87 events. 2/87 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 100. Up to 10 conditions per place. [2021-12-06 18:49:16,728 INFO L132 encePairwiseOnDemand]: 94/97 looper letters, 10 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2021-12-06 18:49:16,733 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 83 transitions, 192 flow [2021-12-06 18:49:16,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:49:16,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 18:49:16,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 253 transitions. [2021-12-06 18:49:16,735 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8694158075601375 [2021-12-06 18:49:16,735 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 253 transitions. [2021-12-06 18:49:16,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 253 transitions. [2021-12-06 18:49:16,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:49:16,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 253 transitions. [2021-12-06 18:49:16,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:16,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:16,739 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:16,740 INFO L186 Difference]: Start difference. First operand has 81 places, 80 transitions, 162 flow. Second operand 3 states and 253 transitions. [2021-12-06 18:49:16,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 83 transitions, 192 flow [2021-12-06 18:49:16,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 83 transitions, 192 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-06 18:49:16,742 INFO L242 Difference]: Finished difference. Result has 84 places, 81 transitions, 174 flow [2021-12-06 18:49:16,742 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=84, PETRI_TRANSITIONS=81} [2021-12-06 18:49:16,743 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 0 predicate places. [2021-12-06 18:49:16,743 INFO L470 AbstractCegarLoop]: Abstraction has has 84 places, 81 transitions, 174 flow [2021-12-06 18:49:16,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:16,744 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:49:16,744 INFO L254 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] [2021-12-06 18:49:16,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 18:49:16,744 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-06 18:49:16,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:49:16,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1409393791, now seen corresponding path program 1 times [2021-12-06 18:49:16,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:49:16,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401795787] [2021-12-06 18:49:16,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:49:16,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:49:16,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:49:16,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:49:16,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:49:16,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401795787] [2021-12-06 18:49:16,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401795787] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:49:16,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597919434] [2021-12-06 18:49:16,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:49:16,815 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:49:16,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:49:16,816 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:49:16,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 18:49:16,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:49:16,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:49:16,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:49:16,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:49:16,976 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:49:16,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597919434] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:49:16,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:49:16,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-12-06 18:49:16,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289676400] [2021-12-06 18:49:16,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:49:16,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:49:16,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:49:16,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:49:16,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:49:16,980 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 97 [2021-12-06 18:49:16,980 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 81 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:16,981 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:49:16,981 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 97 [2021-12-06 18:49:16,981 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:49:17,011 INFO L129 PetriNetUnfolder]: 2/97 cut-off events. [2021-12-06 18:49:17,011 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-06 18:49:17,012 INFO L84 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 97 events. 2/97 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 114. Up to 9 conditions per place. [2021-12-06 18:49:17,012 INFO L132 encePairwiseOnDemand]: 94/97 looper letters, 9 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2021-12-06 18:49:17,012 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 84 transitions, 202 flow [2021-12-06 18:49:17,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:49:17,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 18:49:17,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 255 transitions. [2021-12-06 18:49:17,014 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8762886597938144 [2021-12-06 18:49:17,014 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 255 transitions. [2021-12-06 18:49:17,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 255 transitions. [2021-12-06 18:49:17,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:49:17,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 255 transitions. [2021-12-06 18:49:17,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:17,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:17,017 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:17,017 INFO L186 Difference]: Start difference. First operand has 84 places, 81 transitions, 174 flow. Second operand 3 states and 255 transitions. [2021-12-06 18:49:17,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 84 transitions, 202 flow [2021-12-06 18:49:17,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 84 transitions, 200 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-06 18:49:17,020 INFO L242 Difference]: Finished difference. Result has 86 places, 82 transitions, 184 flow [2021-12-06 18:49:17,020 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=86, PETRI_TRANSITIONS=82} [2021-12-06 18:49:17,021 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 2 predicate places. [2021-12-06 18:49:17,021 INFO L470 AbstractCegarLoop]: Abstraction has has 86 places, 82 transitions, 184 flow [2021-12-06 18:49:17,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:17,021 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:49:17,021 INFO L254 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] [2021-12-06 18:49:17,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 18:49:17,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:49:17,223 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-06 18:49:17,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:49:17,225 INFO L85 PathProgramCache]: Analyzing trace with hash -293330369, now seen corresponding path program 1 times [2021-12-06 18:49:17,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:49:17,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36205394] [2021-12-06 18:49:17,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:49:17,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:49:17,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:49:17,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:49:17,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:49:17,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36205394] [2021-12-06 18:49:17,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36205394] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:49:17,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771400936] [2021-12-06 18:49:17,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:49:17,393 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:49:17,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:49:17,394 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:49:17,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 18:49:17,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:49:17,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:49:17,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:49:17,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:49:17,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:49:17,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:49:17,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771400936] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:49:17,673 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:49:17,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-12-06 18:49:17,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259602850] [2021-12-06 18:49:17,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:49:17,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 18:49:17,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:49:17,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 18:49:17,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:49:17,677 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 97 [2021-12-06 18:49:17,678 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 82 transitions, 184 flow. Second operand has 10 states, 10 states have (on average 81.9) internal successors, (819), 10 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:17,679 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:49:17,679 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 97 [2021-12-06 18:49:17,679 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:49:17,753 INFO L129 PetriNetUnfolder]: 2/110 cut-off events. [2021-12-06 18:49:17,754 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-12-06 18:49:17,755 INFO L84 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 110 events. 2/110 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 2/111 useless extension candidates. Maximal degree in co-relation 139. Up to 7 conditions per place. [2021-12-06 18:49:17,756 INFO L132 encePairwiseOnDemand]: 91/97 looper letters, 9 selfloop transitions, 9 changer transitions 0/90 dead transitions. [2021-12-06 18:49:17,756 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 90 transitions, 238 flow [2021-12-06 18:49:17,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 18:49:17,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-06 18:49:17,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 740 transitions. [2021-12-06 18:49:17,760 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.847651775486827 [2021-12-06 18:49:17,760 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 740 transitions. [2021-12-06 18:49:17,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 740 transitions. [2021-12-06 18:49:17,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:49:17,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 740 transitions. [2021-12-06 18:49:17,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 82.22222222222223) internal successors, (740), 9 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:17,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 97.0) internal successors, (970), 10 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:17,769 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 97.0) internal successors, (970), 10 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:17,769 INFO L186 Difference]: Start difference. First operand has 86 places, 82 transitions, 184 flow. Second operand 9 states and 740 transitions. [2021-12-06 18:49:17,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 90 transitions, 238 flow [2021-12-06 18:49:17,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 90 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-06 18:49:17,773 INFO L242 Difference]: Finished difference. Result has 96 places, 88 transitions, 232 flow [2021-12-06 18:49:17,773 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=232, PETRI_PLACES=96, PETRI_TRANSITIONS=88} [2021-12-06 18:49:17,774 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 12 predicate places. [2021-12-06 18:49:17,774 INFO L470 AbstractCegarLoop]: Abstraction has has 96 places, 88 transitions, 232 flow [2021-12-06 18:49:17,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 81.9) internal successors, (819), 10 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:17,775 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:49:17,775 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:49:17,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 18:49:17,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:49:17,978 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-06 18:49:17,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:49:17,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1717411201, now seen corresponding path program 2 times [2021-12-06 18:49:17,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:49:17,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348402566] [2021-12-06 18:49:17,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:49:17,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:49:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:49:18,150 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 18:49:18,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:49:18,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348402566] [2021-12-06 18:49:18,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348402566] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:49:18,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650385716] [2021-12-06 18:49:18,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 18:49:18,151 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:49:18,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:49:18,152 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:49:18,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 18:49:18,208 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 18:49:18,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:49:18,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:49:18,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:49:18,304 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 18:49:18,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:49:18,387 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 18:49:18,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650385716] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:49:18,388 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:49:18,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-12-06 18:49:18,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486268837] [2021-12-06 18:49:18,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:49:18,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 18:49:18,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:49:18,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 18:49:18,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:49:18,390 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 97 [2021-12-06 18:49:18,391 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 88 transitions, 232 flow. Second operand has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:18,392 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:49:18,392 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 97 [2021-12-06 18:49:18,392 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:49:18,450 INFO L129 PetriNetUnfolder]: 2/120 cut-off events. [2021-12-06 18:49:18,450 INFO L130 PetriNetUnfolder]: For 7/21 co-relation queries the response was YES. [2021-12-06 18:49:18,452 INFO L84 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 120 events. 2/120 cut-off events. For 7/21 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 9/128 useless extension candidates. Maximal degree in co-relation 170. Up to 8 conditions per place. [2021-12-06 18:49:18,452 INFO L132 encePairwiseOnDemand]: 91/97 looper letters, 10 selfloop transitions, 9 changer transitions 0/96 dead transitions. [2021-12-06 18:49:18,452 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 96 transitions, 288 flow [2021-12-06 18:49:18,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 18:49:18,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-06 18:49:18,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 732 transitions. [2021-12-06 18:49:18,456 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8384879725085911 [2021-12-06 18:49:18,456 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 732 transitions. [2021-12-06 18:49:18,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 732 transitions. [2021-12-06 18:49:18,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:49:18,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 732 transitions. [2021-12-06 18:49:18,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 81.33333333333333) internal successors, (732), 9 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:18,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 97.0) internal successors, (970), 10 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:18,462 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 97.0) internal successors, (970), 10 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:18,462 INFO L186 Difference]: Start difference. First operand has 96 places, 88 transitions, 232 flow. Second operand 9 states and 732 transitions. [2021-12-06 18:49:18,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 96 transitions, 288 flow [2021-12-06 18:49:18,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 96 transitions, 282 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-12-06 18:49:18,467 INFO L242 Difference]: Finished difference. Result has 106 places, 94 transitions, 276 flow [2021-12-06 18:49:18,467 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=276, PETRI_PLACES=106, PETRI_TRANSITIONS=94} [2021-12-06 18:49:18,468 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 22 predicate places. [2021-12-06 18:49:18,468 INFO L470 AbstractCegarLoop]: Abstraction has has 106 places, 94 transitions, 276 flow [2021-12-06 18:49:18,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:18,469 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:49:18,469 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:49:18,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 18:49:18,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:49:18,670 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-06 18:49:18,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:49:18,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1447238555, now seen corresponding path program 3 times [2021-12-06 18:49:18,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:49:18,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077857968] [2021-12-06 18:49:18,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:49:18,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:49:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:49:18,799 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 18:49:18,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:49:18,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077857968] [2021-12-06 18:49:18,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077857968] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:49:18,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42433205] [2021-12-06 18:49:18,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 18:49:18,800 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:49:18,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:49:18,801 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:49:18,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 18:49:18,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-06 18:49:18,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:49:18,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 18:49:18,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:49:18,979 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 18:49:18,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:49:19,116 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 18:49:19,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42433205] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:49:19,117 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:49:19,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2021-12-06 18:49:19,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780026221] [2021-12-06 18:49:19,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:49:19,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-06 18:49:19,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:49:19,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-06 18:49:19,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-12-06 18:49:19,119 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 97 [2021-12-06 18:49:19,121 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 94 transitions, 276 flow. Second operand has 18 states, 18 states have (on average 81.0) internal successors, (1458), 18 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:19,121 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:49:19,121 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 97 [2021-12-06 18:49:19,121 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:49:19,254 INFO L129 PetriNetUnfolder]: 2/152 cut-off events. [2021-12-06 18:49:19,254 INFO L130 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2021-12-06 18:49:19,255 INFO L84 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 152 events. 2/152 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 92 event pairs, 0 based on Foata normal form. 4/155 useless extension candidates. Maximal degree in co-relation 263. Up to 11 conditions per place. [2021-12-06 18:49:19,256 INFO L132 encePairwiseOnDemand]: 91/97 looper letters, 14 selfloop transitions, 21 changer transitions 0/112 dead transitions. [2021-12-06 18:49:19,256 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 112 transitions, 442 flow [2021-12-06 18:49:19,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 18:49:19,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-06 18:49:19,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1698 transitions. [2021-12-06 18:49:19,264 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.833578792341679 [2021-12-06 18:49:19,264 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1698 transitions. [2021-12-06 18:49:19,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1698 transitions. [2021-12-06 18:49:19,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:49:19,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1698 transitions. [2021-12-06 18:49:19,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 80.85714285714286) internal successors, (1698), 21 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:19,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 97.0) internal successors, (2134), 22 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:19,274 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 97.0) internal successors, (2134), 22 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:19,275 INFO L186 Difference]: Start difference. First operand has 106 places, 94 transitions, 276 flow. Second operand 21 states and 1698 transitions. [2021-12-06 18:49:19,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 112 transitions, 442 flow [2021-12-06 18:49:19,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 112 transitions, 428 flow, removed 6 selfloop flow, removed 1 redundant places. [2021-12-06 18:49:19,279 INFO L242 Difference]: Finished difference. Result has 130 places, 107 transitions, 400 flow [2021-12-06 18:49:19,279 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=400, PETRI_PLACES=130, PETRI_TRANSITIONS=107} [2021-12-06 18:49:19,280 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 46 predicate places. [2021-12-06 18:49:19,280 INFO L470 AbstractCegarLoop]: Abstraction has has 130 places, 107 transitions, 400 flow [2021-12-06 18:49:19,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.0) internal successors, (1458), 18 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:19,281 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:49:19,281 INFO L254 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:49:19,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 18:49:19,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:49:19,482 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-06 18:49:19,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:49:19,482 INFO L85 PathProgramCache]: Analyzing trace with hash -692690511, now seen corresponding path program 4 times [2021-12-06 18:49:19,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:49:19,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750439164] [2021-12-06 18:49:19,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:49:19,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:49:19,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:49:19,617 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 18:49:19,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:49:19,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750439164] [2021-12-06 18:49:19,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750439164] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:49:19,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609968989] [2021-12-06 18:49:19,618 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 18:49:19,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:49:19,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:49:19,618 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:49:19,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 18:49:19,703 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 18:49:19,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:49:19,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 18:49:19,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:49:19,854 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 18:49:19,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:49:20,096 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 18:49:20,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609968989] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:49:20,097 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:49:20,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2021-12-06 18:49:20,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978516376] [2021-12-06 18:49:20,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:49:20,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-06 18:49:20,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:49:20,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-06 18:49:20,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2021-12-06 18:49:20,102 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 97 [2021-12-06 18:49:20,105 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 107 transitions, 400 flow. Second operand has 34 states, 34 states have (on average 81.0) internal successors, (2754), 34 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:20,105 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:49:20,105 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 97 [2021-12-06 18:49:20,105 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:49:20,510 INFO L129 PetriNetUnfolder]: 2/216 cut-off events. [2021-12-06 18:49:20,510 INFO L130 PetriNetUnfolder]: For 267/267 co-relation queries the response was YES. [2021-12-06 18:49:20,512 INFO L84 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 216 events. 2/216 cut-off events. For 267/267 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 92 event pairs, 0 based on Foata normal form. 8/223 useless extension candidates. Maximal degree in co-relation 485. Up to 27 conditions per place. [2021-12-06 18:49:20,513 INFO L132 encePairwiseOnDemand]: 91/97 looper letters, 22 selfloop transitions, 45 changer transitions 0/144 dead transitions. [2021-12-06 18:49:20,513 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 144 transitions, 822 flow [2021-12-06 18:49:20,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-12-06 18:49:20,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-12-06 18:49:20,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 3630 transitions. [2021-12-06 18:49:20,524 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8316151202749141 [2021-12-06 18:49:20,524 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 3630 transitions. [2021-12-06 18:49:20,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 3630 transitions. [2021-12-06 18:49:20,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:49:20,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 3630 transitions. [2021-12-06 18:49:20,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 80.66666666666667) internal successors, (3630), 45 states have internal predecessors, (3630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:20,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 97.0) internal successors, (4462), 46 states have internal predecessors, (4462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:20,549 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 97.0) internal successors, (4462), 46 states have internal predecessors, (4462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:20,549 INFO L186 Difference]: Start difference. First operand has 130 places, 107 transitions, 400 flow. Second operand 45 states and 3630 transitions. [2021-12-06 18:49:20,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 144 transitions, 822 flow [2021-12-06 18:49:20,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 144 transitions, 782 flow, removed 14 selfloop flow, removed 6 redundant places. [2021-12-06 18:49:20,557 INFO L242 Difference]: Finished difference. Result has 177 places, 132 transitions, 678 flow [2021-12-06 18:49:20,557 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=678, PETRI_PLACES=177, PETRI_TRANSITIONS=132} [2021-12-06 18:49:20,558 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 93 predicate places. [2021-12-06 18:49:20,558 INFO L470 AbstractCegarLoop]: Abstraction has has 177 places, 132 transitions, 678 flow [2021-12-06 18:49:20,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 81.0) internal successors, (2754), 34 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:20,560 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:49:20,560 INFO L254 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:49:20,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 18:49:20,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:49:20,762 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-06 18:49:20,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:49:20,763 INFO L85 PathProgramCache]: Analyzing trace with hash 166775881, now seen corresponding path program 5 times [2021-12-06 18:49:20,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:49:20,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256335203] [2021-12-06 18:49:20,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:49:20,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:49:20,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:49:21,181 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 0 proven. 855 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 18:49:21,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:49:21,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256335203] [2021-12-06 18:49:21,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256335203] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:49:21,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586964190] [2021-12-06 18:49:21,182 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 18:49:21,182 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:49:21,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:49:21,183 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:49:21,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 18:49:21,307 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-12-06 18:49:21,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:49:21,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 18:49:21,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:49:21,539 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 855 trivial. 0 not checked. [2021-12-06 18:49:21,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:49:21,762 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 855 trivial. 0 not checked. [2021-12-06 18:49:21,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586964190] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:49:21,762 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:49:21,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 9, 9] total 47 [2021-12-06 18:49:21,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694485176] [2021-12-06 18:49:21,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:49:21,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-12-06 18:49:21,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:49:21,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-12-06 18:49:21,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=1803, Unknown=0, NotChecked=0, Total=2162 [2021-12-06 18:49:21,771 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 97 [2021-12-06 18:49:21,773 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 132 transitions, 678 flow. Second operand has 47 states, 47 states have (on average 74.29787234042553) internal successors, (3492), 47 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:21,773 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:49:21,773 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 97 [2021-12-06 18:49:21,773 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:49:57,440 INFO L129 PetriNetUnfolder]: 2209/6985 cut-off events. [2021-12-06 18:49:57,440 INFO L130 PetriNetUnfolder]: For 20041/20041 co-relation queries the response was YES. [2021-12-06 18:49:57,466 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22861 conditions, 6985 events. 2209/6985 cut-off events. For 20041/20041 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 50444 event pairs, 20 based on Foata normal form. 308/7289 useless extension candidates. Maximal degree in co-relation 22836. Up to 928 conditions per place. [2021-12-06 18:49:57,503 INFO L132 encePairwiseOnDemand]: 86/97 looper letters, 961 selfloop transitions, 1927 changer transitions 0/2951 dead transitions. [2021-12-06 18:49:57,503 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1117 places, 2951 transitions, 26324 flow [2021-12-06 18:49:57,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 941 states. [2021-12-06 18:49:57,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 941 states. [2021-12-06 18:49:57,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 70848 transitions. [2021-12-06 18:49:57,561 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.776186772133177 [2021-12-06 18:49:57,562 INFO L72 ComplementDD]: Start complementDD. Operand 941 states and 70848 transitions. [2021-12-06 18:49:57,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 941 states and 70848 transitions. [2021-12-06 18:49:57,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:49:57,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 941 states and 70848 transitions. [2021-12-06 18:49:57,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 942 states, 941 states have (on average 75.29011689691818) internal successors, (70848), 941 states have internal predecessors, (70848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:57,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 942 states, 942 states have (on average 97.0) internal successors, (91374), 942 states have internal predecessors, (91374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:57,817 INFO L81 ComplementDD]: Finished complementDD. Result has 942 states, 942 states have (on average 97.0) internal successors, (91374), 942 states have internal predecessors, (91374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:57,817 INFO L186 Difference]: Start difference. First operand has 177 places, 132 transitions, 678 flow. Second operand 941 states and 70848 transitions. [2021-12-06 18:49:57,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1117 places, 2951 transitions, 26324 flow [2021-12-06 18:49:57,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1099 places, 2951 transitions, 25164 flow, removed 220 selfloop flow, removed 18 redundant places. [2021-12-06 18:49:57,907 INFO L242 Difference]: Finished difference. Result has 1379 places, 2119 transitions, 18814 flow [2021-12-06 18:49:57,908 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=941, PETRI_FLOW=18814, PETRI_PLACES=1379, PETRI_TRANSITIONS=2119} [2021-12-06 18:49:57,908 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 1295 predicate places. [2021-12-06 18:49:57,908 INFO L470 AbstractCegarLoop]: Abstraction has has 1379 places, 2119 transitions, 18814 flow [2021-12-06 18:49:57,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 74.29787234042553) internal successors, (3492), 47 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:57,909 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:49:57,910 INFO L254 CegarLoopForPetriNet]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:49:57,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 18:49:58,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:49:58,111 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-06 18:49:58,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:49:58,112 INFO L85 PathProgramCache]: Analyzing trace with hash -516955466, now seen corresponding path program 6 times [2021-12-06 18:49:58,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:49:58,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449219558] [2021-12-06 18:49:58,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:49:58,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:49:58,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:49:58,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1214 backedges. 0 proven. 976 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2021-12-06 18:49:58,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:49:58,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449219558] [2021-12-06 18:49:58,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449219558] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:49:58,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539536345] [2021-12-06 18:49:58,564 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 18:49:58,564 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:49:58,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:49:58,565 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:49:58,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 18:49:58,791 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-12-06 18:49:58,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:49:58,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 18:49:58,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:49:59,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1214 backedges. 31 proven. 238 refuted. 0 times theorem prover too weak. 945 trivial. 0 not checked. [2021-12-06 18:49:59,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:49:59,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1214 backedges. 31 proven. 238 refuted. 0 times theorem prover too weak. 945 trivial. 0 not checked. [2021-12-06 18:49:59,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539536345] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:49:59,562 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:49:59,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 17, 17] total 65 [2021-12-06 18:49:59,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338742213] [2021-12-06 18:49:59,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:49:59,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2021-12-06 18:49:59,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:49:59,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-12-06 18:49:59,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=594, Invalid=3566, Unknown=0, NotChecked=0, Total=4160 [2021-12-06 18:49:59,568 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 97 [2021-12-06 18:49:59,570 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1379 places, 2119 transitions, 18814 flow. Second operand has 65 states, 65 states have (on average 74.23076923076923) internal successors, (4825), 65 states have internal predecessors, (4825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:49:59,570 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:49:59,570 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 97 [2021-12-06 18:49:59,570 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:53:05,963 INFO L129 PetriNetUnfolder]: 4673/15415 cut-off events. [2021-12-06 18:53:05,964 INFO L130 PetriNetUnfolder]: For 12501653/12501752 co-relation queries the response was YES. [2021-12-06 18:53:06,463 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93802 conditions, 15415 events. 4673/15415 cut-off events. For 12501653/12501752 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 127388 event pairs, 20 based on Foata normal form. 734/16143 useless extension candidates. Maximal degree in co-relation 93497. Up to 1984 conditions per place. [2021-12-06 18:53:06,555 INFO L132 encePairwiseOnDemand]: 86/97 looper letters, 1974 selfloop transitions, 4834 changer transitions 0/6871 dead transitions. [2021-12-06 18:53:06,555 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3579 places, 6871 transitions, 125300 flow [2021-12-06 18:53:06,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2201 states. [2021-12-06 18:53:06,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2201 states. [2021-12-06 18:53:06,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2201 states to 2201 states and 165332 transitions. [2021-12-06 18:53:06,645 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7743996402759757 [2021-12-06 18:53:06,645 INFO L72 ComplementDD]: Start complementDD. Operand 2201 states and 165332 transitions. [2021-12-06 18:53:06,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2201 states and 165332 transitions. [2021-12-06 18:53:06,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:53:06,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2201 states and 165332 transitions. [2021-12-06 18:53:06,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 2202 states, 2201 states have (on average 75.11676510676965) internal successors, (165332), 2201 states have internal predecessors, (165332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:53:06,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 2202 states, 2202 states have (on average 97.0) internal successors, (213594), 2202 states have internal predecessors, (213594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:53:06,970 INFO L81 ComplementDD]: Finished complementDD. Result has 2202 states, 2202 states have (on average 97.0) internal successors, (213594), 2202 states have internal predecessors, (213594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:53:06,970 INFO L186 Difference]: Start difference. First operand has 1379 places, 2119 transitions, 18814 flow. Second operand 2201 states and 165332 transitions. [2021-12-06 18:53:06,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 3579 places, 6871 transitions, 125300 flow [2021-12-06 18:53:16,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 3531 places, 6871 transitions, 118724 flow, removed 804 selfloop flow, removed 48 redundant places. [2021-12-06 18:53:16,335 INFO L242 Difference]: Finished difference. Result has 4086 places, 5079 transitions, 58746 flow [2021-12-06 18:53:16,339 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=15926, PETRI_DIFFERENCE_MINUEND_PLACES=1331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1974, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2201, PETRI_FLOW=58746, PETRI_PLACES=4086, PETRI_TRANSITIONS=5079} [2021-12-06 18:53:16,340 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 4002 predicate places. [2021-12-06 18:53:16,340 INFO L470 AbstractCegarLoop]: Abstraction has has 4086 places, 5079 transitions, 58746 flow [2021-12-06 18:53:16,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 74.23076923076923) internal successors, (4825), 65 states have internal predecessors, (4825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:53:16,340 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:53:16,341 INFO L254 CegarLoopForPetriNet]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:53:16,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 18:53:16,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-12-06 18:53:16,543 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-06 18:53:16,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:53:16,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1027475895, now seen corresponding path program 7 times [2021-12-06 18:53:16,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:53:16,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549862939] [2021-12-06 18:53:16,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:53:16,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:53:16,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:53:16,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2275 backedges. 29 proven. 1105 refuted. 0 times theorem prover too weak. 1141 trivial. 0 not checked. [2021-12-06 18:53:16,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:53:16,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549862939] [2021-12-06 18:53:16,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549862939] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:53:16,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646855374] [2021-12-06 18:53:16,936 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 18:53:16,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:53:16,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:53:16,936 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:53:16,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 18:53:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:53:17,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 886 conjuncts, 36 conjunts are in the unsatisfiable core [2021-12-06 18:53:17,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:53:17,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2275 backedges. 29 proven. 1105 refuted. 0 times theorem prover too weak. 1141 trivial. 0 not checked. [2021-12-06 18:53:17,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:53:17,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2275 backedges. 29 proven. 1105 refuted. 0 times theorem prover too weak. 1141 trivial. 0 not checked. [2021-12-06 18:53:17,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646855374] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:53:17,689 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:53:17,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 43 [2021-12-06 18:53:17,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528122757] [2021-12-06 18:53:17,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:53:17,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-12-06 18:53:17,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:53:17,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-12-06 18:53:17,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2021-12-06 18:53:17,695 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 97 [2021-12-06 18:53:17,697 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 4086 places, 5079 transitions, 58746 flow. Second operand has 43 states, 43 states have (on average 81.04651162790698) internal successors, (3485), 43 states have internal predecessors, (3485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:53:17,698 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:53:17,698 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 97 [2021-12-06 18:53:17,698 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:53:32,720 INFO L129 PetriNetUnfolder]: 3043/12055 cut-off events. [2021-12-06 18:53:32,720 INFO L130 PetriNetUnfolder]: For 5861795/5863713 co-relation queries the response was YES. [2021-12-06 18:53:33,481 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82367 conditions, 12055 events. 3043/12055 cut-off events. For 5861795/5863713 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 101603 event pairs, 154 based on Foata normal form. 297/12284 useless extension candidates. Maximal degree in co-relation 81507. Up to 1369 conditions per place. [2021-12-06 18:53:33,553 INFO L132 encePairwiseOnDemand]: 91/97 looper letters, 27 selfloop transitions, 2651 changer transitions 0/5142 dead transitions. [2021-12-06 18:53:33,553 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 4145 places, 5142 transitions, 65940 flow [2021-12-06 18:53:33,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-12-06 18:53:33,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-12-06 18:53:33,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 4830 transitions. [2021-12-06 18:53:33,556 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8298969072164949 [2021-12-06 18:53:33,556 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 4830 transitions. [2021-12-06 18:53:33,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 4830 transitions. [2021-12-06 18:53:33,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:53:33,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 4830 transitions. [2021-12-06 18:53:33,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 80.5) internal successors, (4830), 60 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:53:33,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 97.0) internal successors, (5917), 61 states have internal predecessors, (5917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:53:33,564 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 97.0) internal successors, (5917), 61 states have internal predecessors, (5917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:53:33,564 INFO L186 Difference]: Start difference. First operand has 4086 places, 5079 transitions, 58746 flow. Second operand 60 states and 4830 transitions. [2021-12-06 18:53:33,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 4145 places, 5142 transitions, 65940 flow [2021-12-06 18:54:33,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 3317 places, 5142 transitions, 57964 flow, removed 2314 selfloop flow, removed 828 redundant places. [2021-12-06 18:54:33,642 INFO L242 Difference]: Finished difference. Result has 3321 places, 5126 transitions, 57849 flow [2021-12-06 18:54:33,648 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=50770, PETRI_DIFFERENCE_MINUEND_PLACES=3258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5079, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2606, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=57849, PETRI_PLACES=3321, PETRI_TRANSITIONS=5126} [2021-12-06 18:54:33,649 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 3237 predicate places. [2021-12-06 18:54:33,649 INFO L470 AbstractCegarLoop]: Abstraction has has 3321 places, 5126 transitions, 57849 flow [2021-12-06 18:54:33,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 81.04651162790698) internal successors, (3485), 43 states have internal predecessors, (3485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:54:33,649 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:54:33,650 INFO L254 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:54:33,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 18:54:33,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 18:54:33,851 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-06 18:54:33,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:54:33,853 INFO L85 PathProgramCache]: Analyzing trace with hash 712703486, now seen corresponding path program 8 times [2021-12-06 18:54:33,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:54:33,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218581506] [2021-12-06 18:54:33,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:54:33,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:54:33,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:54:34,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2710 backedges. 438 proven. 1170 refuted. 0 times theorem prover too weak. 1102 trivial. 0 not checked. [2021-12-06 18:54:34,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:54:34,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218581506] [2021-12-06 18:54:34,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218581506] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:54:34,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683632848] [2021-12-06 18:54:34,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 18:54:34,217 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:54:34,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:54:34,218 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:54:34,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 18:54:34,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 18:54:34,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:54:34,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-06 18:54:34,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:54:34,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2710 backedges. 438 proven. 1170 refuted. 0 times theorem prover too weak. 1102 trivial. 0 not checked. [2021-12-06 18:54:34,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:54:34,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2710 backedges. 438 proven. 1170 refuted. 0 times theorem prover too weak. 1102 trivial. 0 not checked. [2021-12-06 18:54:34,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683632848] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:54:34,989 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:54:34,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 43 [2021-12-06 18:54:34,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492302265] [2021-12-06 18:54:34,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:54:34,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-12-06 18:54:34,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:54:34,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-12-06 18:54:34,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2021-12-06 18:54:34,993 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 97 [2021-12-06 18:54:34,995 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3321 places, 5126 transitions, 57849 flow. Second operand has 43 states, 43 states have (on average 82.02325581395348) internal successors, (3527), 43 states have internal predecessors, (3527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:54:34,995 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:54:34,995 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 97 [2021-12-06 18:54:34,995 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:54:59,933 INFO L129 PetriNetUnfolder]: 4128/17234 cut-off events. [2021-12-06 18:54:59,933 INFO L130 PetriNetUnfolder]: For 20559052/20563383 co-relation queries the response was YES. [2021-12-06 18:55:01,159 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103252 conditions, 17234 events. 4128/17234 cut-off events. For 20559052/20563383 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 154015 event pairs, 164 based on Foata normal form. 151/17308 useless extension candidates. Maximal degree in co-relation 102388. Up to 1939 conditions per place. [2021-12-06 18:55:01,231 INFO L132 encePairwiseOnDemand]: 91/97 looper letters, 737 selfloop transitions, 3000 changer transitions 0/6460 dead transitions. [2021-12-06 18:55:01,231 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3380 places, 6460 transitions, 79631 flow [2021-12-06 18:55:01,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-12-06 18:55:01,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-12-06 18:55:01,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 4891 transitions. [2021-12-06 18:55:01,234 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8403780068728522 [2021-12-06 18:55:01,234 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 4891 transitions. [2021-12-06 18:55:01,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 4891 transitions. [2021-12-06 18:55:01,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:55:01,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 4891 transitions. [2021-12-06 18:55:01,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 81.51666666666667) internal successors, (4891), 60 states have internal predecessors, (4891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:55:01,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 97.0) internal successors, (5917), 61 states have internal predecessors, (5917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:55:01,241 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 97.0) internal successors, (5917), 61 states have internal predecessors, (5917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:55:01,241 INFO L186 Difference]: Start difference. First operand has 3321 places, 5126 transitions, 57849 flow. Second operand 60 states and 4891 transitions. [2021-12-06 18:55:01,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 3380 places, 6460 transitions, 79631 flow [2021-12-06 18:56:12,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 3232 places, 6460 transitions, 73237 flow, removed 513 selfloop flow, removed 148 redundant places. [2021-12-06 18:56:12,936 INFO L242 Difference]: Finished difference. Result has 3238 places, 5926 transitions, 65675 flow [2021-12-06 18:56:12,942 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=51455, PETRI_DIFFERENCE_MINUEND_PLACES=3173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2300, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2776, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=65675, PETRI_PLACES=3238, PETRI_TRANSITIONS=5926} [2021-12-06 18:56:12,942 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 3154 predicate places. [2021-12-06 18:56:12,942 INFO L470 AbstractCegarLoop]: Abstraction has has 3238 places, 5926 transitions, 65675 flow [2021-12-06 18:56:12,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 82.02325581395348) internal successors, (3527), 43 states have internal predecessors, (3527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:12,943 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 18:56:12,943 INFO L254 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:56:12,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 18:56:13,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-06 18:56:13,145 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-06 18:56:13,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:56:13,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1248089284, now seen corresponding path program 9 times [2021-12-06 18:56:13,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:56:13,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364894315] [2021-12-06 18:56:13,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:56:13,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:56:13,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:56:14,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:56:14,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:56:14,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364894315] [2021-12-06 18:56:14,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364894315] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:56:14,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074588195] [2021-12-06 18:56:14,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 18:56:14,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:56:14,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:56:14,692 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:56:14,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ff28af8-c0f6-4923-8fe2-878703373c7f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 18:56:15,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-12-06 18:56:15,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:56:15,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 165 conjunts are in the unsatisfiable core [2021-12-06 18:56:15,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:56:16,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:56:16,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:56:17,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:56:17,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074588195] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:56:17,312 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:56:17,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67, 67] total 69 [2021-12-06 18:56:17,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238899929] [2021-12-06 18:56:17,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:56:17,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2021-12-06 18:56:17,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:56:17,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-12-06 18:56:17,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=4555, Unknown=0, NotChecked=0, Total=4692 [2021-12-06 18:56:17,318 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 97 [2021-12-06 18:56:17,321 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3238 places, 5926 transitions, 65675 flow. Second operand has 69 states, 69 states have (on average 76.34782608695652) internal successors, (5268), 69 states have internal predecessors, (5268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:17,321 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 18:56:17,321 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 97 [2021-12-06 18:56:17,321 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 18:56:33,692 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([182] L1350-->L1351: Formula: (= v_~myglobal~0_3 (+ v_~myglobal~0_4 1)) InVars {~myglobal~0=v_~myglobal~0_4} OutVars{~myglobal~0=v_~myglobal~0_3} AuxVars[] AssignedVars[~myglobal~0][2917], [Black: 1404#(<= |ULTIMATE.start_main_~i~1#1| 3), Black: 1939#(< |ULTIMATE.start_main_~i~1#1| 18), Black: 1913#(< |ULTIMATE.start_main_~i~1#1| 19), Black: 1396#true, Black: 102#(= |ULTIMATE.start_main_~i~1#1| 0), 3667#(<= thread_function_mutexThread1of1ForFork0_~i~0 1), Black: 272#(<= thread_function_mutexThread1of1ForFork0_~i~0 0), Black: 19785#(< thread_function_mutexThread1of1ForFork0_~i~0 17), Black: 18438#(<= thread_function_mutexThread1of1ForFork0_~i~0 15), Black: 18406#true, Black: 19750#(< thread_function_mutexThread1of1ForFork0_~i~0 18), Black: 19704#(< thread_function_mutexThread1of1ForFork0_~i~0 20), Black: 19715#(< thread_function_mutexThread1of1ForFork0_~i~0 19), 8020#(<= thread_function_mutexThread1of1ForFork0_~i~0 1), 1902#(< |ULTIMATE.start_main_~i~1#1| 20), 1126#(< |ULTIMATE.start_main_~i~1#1| 20), Black: 308#true, Black: 621#(< thread_function_mutexThread1of1ForFork0_~i~0 20), 97#true, 18410#(<= thread_function_mutexThread1of1ForFork0_~i~0 1), 23530#(and (<= thread_function_mutexThread1of1ForFork0_~j~0 20) (<= 21 ~myglobal~0) (<= ~myglobal~0 21) (<= 20 thread_function_mutexThread1of1ForFork0_~j~0)), Black: 7124#(and (< thread_function_mutexThread1of1ForFork0_~i~0 19) (< |thread_function_mutexThread1of1ForFork0_#t~post31| 19) (<= |ULTIMATE.start_main_~i~1#1| 15)), Black: 5931#(and (< thread_function_mutexThread1of1ForFork0_~i~0 19) (<= |ULTIMATE.start_main_#t~post40#1| 5) (<= |ULTIMATE.start_main_~i~1#1| 6)), Black: 6743#(and (<= |ULTIMATE.start_main_~i~1#1| 11) (< thread_function_mutexThread1of1ForFork0_~i~0 19) (<= |ULTIMATE.start_main_#t~post40#1| 10)), Black: 4643#(and (<= |ULTIMATE.start_main_#t~post40#1| 4) (<= |ULTIMATE.start_main_~i~1#1| 5)), Black: 6757#(and (<= |ULTIMATE.start_main_~i~1#1| 15) (<= thread_function_mutexThread1of1ForFork0_~i~0 2)), Black: 7066#(and (<= |ULTIMATE.start_main_~i~1#1| 13) (<= |ULTIMATE.start_main_#t~post40#1| 12) (< thread_function_mutexThread1of1ForFork0_~i~0 20)), Black: 6940#(and (<= thread_function_mutexThread1of1ForFork0_~i~0 3) (<= |ULTIMATE.start_main_~i~1#1| 15) (< |thread_function_mutexThread1of1ForFork0_#t~post31| 17)), Black: 7054#(and (<= |ULTIMATE.start_main_~i~1#1| 14) (< thread_function_mutexThread1of1ForFork0_~i~0 19)), Black: 7127#(and (<= |ULTIMATE.start_main_~i~1#1| 14) (< thread_function_mutexThread1of1ForFork0_~i~0 20)), Black: 5517#(and (<= |ULTIMATE.start_main_#t~post40#1| 4) (<= |ULTIMATE.start_main_~i~1#1| 5) (< thread_function_mutexThread1of1ForFork0_~i~0 18)), Black: 6896#(and (<= thread_function_mutexThread1of1ForFork0_~i~0 3) (<= |ULTIMATE.start_main_~i~1#1| 15) (<= |ULTIMATE.start_main_#t~post40#1| 14)), Black: 6778#(and (<= |ULTIMATE.start_main_~i~1#1| 9) (< thread_function_mutexThread1of1ForFork0_~i~0 20) (<= |ULTIMATE.start_main_#t~post40#1| 9)), Black: 6394#(and (<= thread_function_mutexThread1of1ForFork0_~i~0 0) (<= |ULTIMATE.start_main_~i~1#1| 15) (<= |thread_function_mutexThread1of1ForFork0_#t~post31| 0)), Black: 6916#(and (<= thread_function_mutexThread1of1ForFork0_~i~0 3) (<= |ULTIMATE.start_main_~i~1#1| 15)), Black: 6156#(and (<= |ULTIMATE.start_main_~i~1#1| 10) (<= thread_function_mutexThread1of1ForFork0_~i~0 3) (<= |ULTIMATE.start_main_#t~post40#1| 9)), Black: 6321#(and (<= thread_function_mutexThread1of1ForFork0_~i~0 0) (<= |ULTIMATE.start_main_~i~1#1| 15)), Black: 6794#(and (<= |ULTIMATE.start_main_~i~1#1| 15) (<= thread_function_mutexThread1of1ForFork0_~i~0 2) (<= |thread_function_mutexThread1of1ForFork0_#t~post31| 2)), Black: 3122#(<= |ULTIMATE.start_main_~i~1#1| 8), Black: 6591#(and (<= |ULTIMATE.start_main_~i~1#1| 9) (< thread_function_mutexThread1of1ForFork0_~i~0 19) (<= |ULTIMATE.start_main_#t~post40#1| 9)), Black: 5713#(and (< thread_function_mutexThread1of1ForFork0_~i~0 20) (<= |ULTIMATE.start_main_#t~post40#1| 3) (<= |ULTIMATE.start_main_~i~1#1| 3)), Black: 6433#(and (< thread_function_mutexThread1of1ForFork0_~i~0 19) (<= |ULTIMATE.start_main_~i~1#1| 8) (<= |ULTIMATE.start_main_#t~post40#1| 8)), Black: 4863#(and (< thread_function_mutexThread1of1ForFork0_~i~0 18) (<= |ULTIMATE.start_main_~i~1#1| 1) (= 0 |ULTIMATE.start_main_#t~post40#1|)), Black: 6219#(and (<= |ULTIMATE.start_main_~i~1#1| 14) (<= |ULTIMATE.start_main_#t~post40#1| 14)), Black: 4446#(and (<= |ULTIMATE.start_main_#t~post40#1| 1) (<= |ULTIMATE.start_main_~i~1#1| 1)), Black: 7030#(and (<= |ULTIMATE.start_main_~i~1#1| 13) (< thread_function_mutexThread1of1ForFork0_~i~0 19) (<= |ULTIMATE.start_main_#t~post40#1| 13)), Black: 5222#(and (<= |ULTIMATE.start_main_#t~post40#1| 1) (<= |ULTIMATE.start_main_~i~1#1| 2) (< thread_function_mutexThread1of1ForFork0_~i~0 19)), Black: 5061#(and (< thread_function_mutexThread1of1ForFork0_~i~0 19) (<= |ULTIMATE.start_main_~i~1#1| 1) (= 0 |ULTIMATE.start_main_#t~post40#1|)), Black: 2801#(< |ULTIMATE.start_main_~i~1#1| 17), Black: 5355#(and (<= |ULTIMATE.start_main_#t~post40#1| 1) (<= |ULTIMATE.start_main_~i~1#1| 1) (< thread_function_mutexThread1of1ForFork0_~i~0 20)), Black: 2827#(< |ULTIMATE.start_main_~i~1#1| 16), Black: 6923#(and (< thread_function_mutexThread1of1ForFork0_~i~0 18) (<= |ULTIMATE.start_main_~i~1#1| 13) (<= |ULTIMATE.start_main_#t~post40#1| 13)), Black: 2853#(< |ULTIMATE.start_main_~i~1#1| 15), Black: 5491#(and (<= |ULTIMATE.start_main_~i~1#1| 2) (< thread_function_mutexThread1of1ForFork0_~i~0 20)), Black: 2879#(< |ULTIMATE.start_main_~i~1#1| 14), Black: 4961#(and (<= thread_function_mutexThread1of1ForFork0_~i~0 3) (<= |ULTIMATE.start_main_~i~1#1| 3)), Black: 5668#(and (< thread_function_mutexThread1of1ForFork0_~i~0 20) (<= |ULTIMATE.start_main_~i~1#1| 3)), Black: 2128#true, Black: 3104#true, Black: 2144#(<= |ULTIMATE.start_main_~i~1#1| 7), Black: 2749#(< |ULTIMATE.start_main_~i~1#1| 19), Black: 6510#(and (<= |ULTIMATE.start_main_~i~1#1| 8) (< thread_function_mutexThread1of1ForFork0_~i~0 20) (<= |ULTIMATE.start_main_#t~post40#1| 7)), Black: 2775#(< |ULTIMATE.start_main_~i~1#1| 18), Black: 4883#(and (< thread_function_mutexThread1of1ForFork0_~i~0 18) (<= |ULTIMATE.start_main_~i~1#1| 1)), Black: 6678#(and (<= thread_function_mutexThread1of1ForFork0_~i~0 3) (<= |ULTIMATE.start_main_~i~1#1| 13)), Black: 6066#(and (<= |ULTIMATE.start_main_~i~1#1| 14) (<= |ULTIMATE.start_main_#t~post40#1| 13)), Black: 3116#(<= |ULTIMATE.start_main_~i~1#1| 5), Black: 4724#(and (< thread_function_mutexThread1of1ForFork0_~i~0 18) (= |ULTIMATE.start_main_~i~1#1| 0)), Black: 3106#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 5464#(and (<= |ULTIMATE.start_main_#t~post40#1| 1) (<= |ULTIMATE.start_main_~i~1#1| 2) (< thread_function_mutexThread1of1ForFork0_~i~0 20)), Black: 6570#(and (<= thread_function_mutexThread1of1ForFork0_~i~0 1) (<= |ULTIMATE.start_main_~i~1#1| 15)), Black: 7057#(and (<= |ULTIMATE.start_main_#t~post40#1| 12) (< thread_function_mutexThread1of1ForFork0_~i~0 20) (<= |ULTIMATE.start_main_~i~1#1| 12)), Black: 5013#(and (<= |ULTIMATE.start_main_~i~1#1| 8) (<= |ULTIMATE.start_main_#t~post40#1| 7)), Black: 6976#(and (<= |ULTIMATE.start_main_~i~1#1| 13) (< thread_function_mutexThread1of1ForFork0_~i~0 19)), Black: 4499#(and (<= |ULTIMATE.start_main_#t~post40#1| 2) (<= |ULTIMATE.start_main_~i~1#1| 3)), Black: 6185#(and (<= |ULTIMATE.start_main_~i~1#1| 10) (<= thread_function_mutexThread1of1ForFork0_~i~0 3)), Black: 6810#(and (<= |ULTIMATE.start_main_~i~1#1| 14) (<= thread_function_mutexThread1of1ForFork0_~i~0 3)), Black: 6535#(and (<= |ULTIMATE.start_main_~i~1#1| 8) (< thread_function_mutexThread1of1ForFork0_~i~0 20)), Black: 5845#(and (< thread_function_mutexThread1of1ForFork0_~i~0 20) (<= |ULTIMATE.start_main_~i~1#1| 4)), Black: 7094#(and (< thread_function_mutexThread1of1ForFork0_~i~0 19) (<= |ULTIMATE.start_main_~i~1#1| 15) (<= |ULTIMATE.start_main_#t~post40#1| 14)), Black: 6524#(and (<= thread_function_mutexThread1of1ForFork0_~i~0 3) (<= |ULTIMATE.start_main_~i~1#1| 12)), Black: 5125#(and (<= thread_function_mutexThread1of1ForFork0_~i~0 3) (<= |ULTIMATE.start_main_~i~1#1| 4)), Black: 5178#(and (<= |ULTIMATE.start_main_~i~1#1| 9) (<= |ULTIMATE.start_main_#t~post40#1| 8)), Black: 5312#(and (<= |ULTIMATE.start_main_~i~1#1| 1) (< thread_function_mutexThread1of1ForFork0_~i~0 20)), Black: 4804#(and (<= |ULTIMATE.start_main_#t~post40#1| 1) (<= thread_function_mutexThread1of1ForFork0_~i~0 3) (<= |ULTIMATE.start_main_~i~1#1| 2)), Black: 6307#(and (< thread_function_mutexThread1of1ForFork0_~i~0 19) (<= |ULTIMATE.start_main_~i~1#1| 8)), Black: 6788#(and (<= |ULTIMATE.start_main_~i~1#1| 14) (<= thread_function_mutexThread1of1ForFork0_~i~0 3) (<= 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