./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe017_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50c9481-62c0-4ec9-b598-a216d47a8f5b/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50c9481-62c0-4ec9-b598-a216d47a8f5b/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50c9481-62c0-4ec9-b598-a216d47a8f5b/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50c9481-62c0-4ec9-b598-a216d47a8f5b/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe017_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50c9481-62c0-4ec9-b598-a216d47a8f5b/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50c9481-62c0-4ec9-b598-a216d47a8f5b/bin/uautomizer-tPACEb0tL8 --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 f42e8f5213d7b87505465b65029831bd75698bf771428502e6718d43723a660f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 10:54:10,748 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 10:54:10,750 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 10:54:10,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 10:54:10,775 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 10:54:10,781 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 10:54:10,783 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 10:54:10,786 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 10:54:10,793 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 10:54:10,799 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 10:54:10,801 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 10:54:10,803 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 10:54:10,803 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 10:54:10,806 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 10:54:10,808 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 10:54:10,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 10:54:10,812 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 10:54:10,813 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 10:54:10,814 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 10:54:10,821 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 10:54:10,822 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 10:54:10,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 10:54:10,826 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 10:54:10,827 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 10:54:10,834 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 10:54:10,835 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 10:54:10,835 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 10:54:10,837 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 10:54:10,838 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 10:54:10,840 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 10:54:10,841 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 10:54:10,842 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 10:54:10,843 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 10:54:10,845 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 10:54:10,845 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 10:54:10,846 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 10:54:10,846 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 10:54:10,846 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 10:54:10,847 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 10:54:10,848 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 10:54:10,848 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 10:54:10,849 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50c9481-62c0-4ec9-b598-a216d47a8f5b/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 10:54:10,888 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 10:54:10,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 10:54:10,889 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 10:54:10,889 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 10:54:10,890 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 10:54:10,890 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 10:54:10,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 10:54:10,891 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 10:54:10,891 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 10:54:10,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 10:54:10,892 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 10:54:10,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 10:54:10,892 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 10:54:10,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 10:54:10,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 10:54:10,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 10:54:10,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 10:54:10,893 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 10:54:10,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 10:54:10,894 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 10:54:10,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 10:54:10,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 10:54:10,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 10:54:10,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 10:54:10,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:54:10,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 10:54:10,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 10:54:10,895 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 10:54:10,895 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 10:54:10,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 10:54:10,897 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 10:54:10,897 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 10:54:10,897 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 10:54:10,898 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_f50c9481-62c0-4ec9-b598-a216d47a8f5b/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50c9481-62c0-4ec9-b598-a216d47a8f5b/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f42e8f5213d7b87505465b65029831bd75698bf771428502e6718d43723a660f [2022-11-16 10:54:11,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 10:54:11,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 10:54:11,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 10:54:11,202 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 10:54:11,203 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 10:54:11,204 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50c9481-62c0-4ec9-b598-a216d47a8f5b/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread-wmm/safe017_tso.i [2022-11-16 10:54:11,287 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50c9481-62c0-4ec9-b598-a216d47a8f5b/bin/uautomizer-tPACEb0tL8/data/52dc4d887/fff2a7bb8fb54eb68bc3839b40c8e0bf/FLAGca5d750ce [2022-11-16 10:54:11,868 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 10:54:11,868 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50c9481-62c0-4ec9-b598-a216d47a8f5b/sv-benchmarks/c/pthread-wmm/safe017_tso.i [2022-11-16 10:54:11,880 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50c9481-62c0-4ec9-b598-a216d47a8f5b/bin/uautomizer-tPACEb0tL8/data/52dc4d887/fff2a7bb8fb54eb68bc3839b40c8e0bf/FLAGca5d750ce [2022-11-16 10:54:12,168 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50c9481-62c0-4ec9-b598-a216d47a8f5b/bin/uautomizer-tPACEb0tL8/data/52dc4d887/fff2a7bb8fb54eb68bc3839b40c8e0bf [2022-11-16 10:54:12,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 10:54:12,172 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 10:54:12,177 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 10:54:12,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 10:54:12,180 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 10:54:12,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:54:12" (1/1) ... [2022-11-16 10:54:12,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20dea1a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:12, skipping insertion in model container [2022-11-16 10:54:12,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:54:12" (1/1) ... [2022-11-16 10:54:12,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 10:54:12,227 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 10:54:12,418 WARN L229 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_f50c9481-62c0-4ec9-b598-a216d47a8f5b/sv-benchmarks/c/pthread-wmm/safe017_tso.i[945,958] [2022-11-16 10:54:12,568 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:54:12,576 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 10:54:12,588 WARN L229 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_f50c9481-62c0-4ec9-b598-a216d47a8f5b/sv-benchmarks/c/pthread-wmm/safe017_tso.i[945,958] [2022-11-16 10:54:12,624 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:54:12,670 INFO L208 MainTranslator]: Completed translation [2022-11-16 10:54:12,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:12 WrapperNode [2022-11-16 10:54:12,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 10:54:12,672 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 10:54:12,672 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 10:54:12,672 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 10:54:12,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:12" (1/1) ... [2022-11-16 10:54:12,713 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:12" (1/1) ... [2022-11-16 10:54:12,740 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2022-11-16 10:54:12,740 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 10:54:12,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 10:54:12,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 10:54:12,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 10:54:12,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:12" (1/1) ... [2022-11-16 10:54:12,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:12" (1/1) ... [2022-11-16 10:54:12,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:12" (1/1) ... [2022-11-16 10:54:12,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:12" (1/1) ... [2022-11-16 10:54:12,772 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:12" (1/1) ... [2022-11-16 10:54:12,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:12" (1/1) ... [2022-11-16 10:54:12,781 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:12" (1/1) ... [2022-11-16 10:54:12,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:12" (1/1) ... [2022-11-16 10:54:12,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 10:54:12,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 10:54:12,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 10:54:12,794 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 10:54:12,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:12" (1/1) ... [2022-11-16 10:54:12,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:54:12,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50c9481-62c0-4ec9-b598-a216d47a8f5b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:12,828 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50c9481-62c0-4ec9-b598-a216d47a8f5b/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 10:54:12,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50c9481-62c0-4ec9-b598-a216d47a8f5b/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 10:54:12,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 10:54:12,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 10:54:12,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 10:54:12,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 10:54:12,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 10:54:12,866 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-16 10:54:12,866 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-16 10:54:12,870 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-16 10:54:12,871 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-16 10:54:12,871 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-16 10:54:12,871 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-16 10:54:12,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 10:54:12,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 10:54:12,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 10:54:12,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 10:54:12,873 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 10:54:12,990 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 10:54:12,992 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 10:54:13,188 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 10:54:13,195 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 10:54:13,196 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 10:54:13,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:54:13 BoogieIcfgContainer [2022-11-16 10:54:13,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 10:54:13,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 10:54:13,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 10:54:13,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 10:54:13,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 10:54:12" (1/3) ... [2022-11-16 10:54:13,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c333682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:54:13, skipping insertion in model container [2022-11-16 10:54:13,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:12" (2/3) ... [2022-11-16 10:54:13,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c333682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:54:13, skipping insertion in model container [2022-11-16 10:54:13,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:54:13" (3/3) ... [2022-11-16 10:54:13,220 INFO L112 eAbstractionObserver]: Analyzing ICFG safe017_tso.i [2022-11-16 10:54:13,243 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 10:54:13,254 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 10:54:13,255 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 10:54:13,255 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 10:54:13,356 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 10:54:13,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 89 transitions, 193 flow [2022-11-16 10:54:13,447 INFO L130 PetriNetUnfolder]: 2/86 cut-off events. [2022-11-16 10:54:13,448 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 10:54:13,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 86 events. 2/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2022-11-16 10:54:13,454 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 89 transitions, 193 flow [2022-11-16 10:54:13,458 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 72 transitions, 153 flow [2022-11-16 10:54:13,469 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 10:54:13,475 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5d770141, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 10:54:13,476 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-16 10:54:13,517 INFO L130 PetriNetUnfolder]: 1/71 cut-off events. [2022-11-16 10:54:13,518 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 10:54:13,518 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:13,518 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:13,525 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 10:54:13,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:13,530 INFO L85 PathProgramCache]: Analyzing trace with hash -197635684, now seen corresponding path program 1 times [2022-11-16 10:54:13,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:13,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362677371] [2022-11-16 10:54:13,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:13,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:13,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:14,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:14,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:14,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362677371] [2022-11-16 10:54:14,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362677371] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:14,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:14,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 10:54:14,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561338106] [2022-11-16 10:54:14,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:14,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 10:54:14,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:14,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 10:54:14,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 10:54:14,541 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 89 [2022-11-16 10:54:14,545 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 72 transitions, 153 flow. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:14,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:14,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 89 [2022-11-16 10:54:14,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:15,032 INFO L130 PetriNetUnfolder]: 303/803 cut-off events. [2022-11-16 10:54:15,032 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-16 10:54:15,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1354 conditions, 803 events. 303/803 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4712 event pairs, 31 based on Foata normal form. 27/799 useless extension candidates. Maximal degree in co-relation 1319. Up to 135 conditions per place. [2022-11-16 10:54:15,044 INFO L137 encePairwiseOnDemand]: 78/89 looper letters, 22 selfloop transitions, 6 changer transitions 47/129 dead transitions. [2022-11-16 10:54:15,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 129 transitions, 417 flow [2022-11-16 10:54:15,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 10:54:15,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 10:54:15,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 965 transitions. [2022-11-16 10:54:15,062 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8340535868625756 [2022-11-16 10:54:15,063 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 965 transitions. [2022-11-16 10:54:15,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 965 transitions. [2022-11-16 10:54:15,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:15,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 965 transitions. [2022-11-16 10:54:15,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.23076923076923) internal successors, (965), 13 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:15,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 89.0) internal successors, (1246), 14 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:15,084 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 89.0) internal successors, (1246), 14 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:15,086 INFO L175 Difference]: Start difference. First operand has 81 places, 72 transitions, 153 flow. Second operand 13 states and 965 transitions. [2022-11-16 10:54:15,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 129 transitions, 417 flow [2022-11-16 10:54:15,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 129 transitions, 414 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 10:54:15,094 INFO L231 Difference]: Finished difference. Result has 102 places, 75 transitions, 234 flow [2022-11-16 10:54:15,096 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=234, PETRI_PLACES=102, PETRI_TRANSITIONS=75} [2022-11-16 10:54:15,099 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 21 predicate places. [2022-11-16 10:54:15,099 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 75 transitions, 234 flow [2022-11-16 10:54:15,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:15,100 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:15,100 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:15,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 10:54:15,101 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 10:54:15,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:15,102 INFO L85 PathProgramCache]: Analyzing trace with hash 2090335771, now seen corresponding path program 1 times [2022-11-16 10:54:15,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:15,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133174587] [2022-11-16 10:54:15,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:15,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:15,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:15,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:15,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:15,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133174587] [2022-11-16 10:54:15,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133174587] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:15,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:15,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 10:54:15,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028285838] [2022-11-16 10:54:15,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:15,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 10:54:15,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:15,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 10:54:15,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 10:54:15,395 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 89 [2022-11-16 10:54:15,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 75 transitions, 234 flow. Second operand has 7 states, 7 states have (on average 69.85714285714286) internal successors, (489), 7 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:15,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:15,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 89 [2022-11-16 10:54:15,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:15,795 INFO L130 PetriNetUnfolder]: 172/668 cut-off events. [2022-11-16 10:54:15,796 INFO L131 PetriNetUnfolder]: For 1272/1343 co-relation queries the response was YES. [2022-11-16 10:54:15,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1889 conditions, 668 events. 172/668 cut-off events. For 1272/1343 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4158 event pairs, 8 based on Foata normal form. 22/675 useless extension candidates. Maximal degree in co-relation 1843. Up to 112 conditions per place. [2022-11-16 10:54:15,805 INFO L137 encePairwiseOnDemand]: 78/89 looper letters, 26 selfloop transitions, 13 changer transitions 52/145 dead transitions. [2022-11-16 10:54:15,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 145 transitions, 924 flow [2022-11-16 10:54:15,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 10:54:15,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 10:54:15,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 964 transitions. [2022-11-16 10:54:15,809 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8331892826274849 [2022-11-16 10:54:15,810 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 964 transitions. [2022-11-16 10:54:15,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 964 transitions. [2022-11-16 10:54:15,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:15,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 964 transitions. [2022-11-16 10:54:15,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.15384615384616) internal successors, (964), 13 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:15,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 89.0) internal successors, (1246), 14 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:15,818 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 89.0) internal successors, (1246), 14 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:15,819 INFO L175 Difference]: Start difference. First operand has 102 places, 75 transitions, 234 flow. Second operand 13 states and 964 transitions. [2022-11-16 10:54:15,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 145 transitions, 924 flow [2022-11-16 10:54:15,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 145 transitions, 896 flow, removed 12 selfloop flow, removed 4 redundant places. [2022-11-16 10:54:15,835 INFO L231 Difference]: Finished difference. Result has 113 places, 84 transitions, 389 flow [2022-11-16 10:54:15,836 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=389, PETRI_PLACES=113, PETRI_TRANSITIONS=84} [2022-11-16 10:54:15,837 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 32 predicate places. [2022-11-16 10:54:15,837 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 84 transitions, 389 flow [2022-11-16 10:54:15,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.85714285714286) internal successors, (489), 7 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:15,838 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:15,838 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:15,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 10:54:15,839 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 10:54:15,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:15,841 INFO L85 PathProgramCache]: Analyzing trace with hash 2078924188, now seen corresponding path program 1 times [2022-11-16 10:54:15,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:15,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474038175] [2022-11-16 10:54:15,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:15,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:16,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:16,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:16,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474038175] [2022-11-16 10:54:16,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474038175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:16,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:16,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 10:54:16,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793706447] [2022-11-16 10:54:16,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:16,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:54:16,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:16,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:54:16,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:54:16,155 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 89 [2022-11-16 10:54:16,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 84 transitions, 389 flow. Second operand has 6 states, 6 states have (on average 74.66666666666667) internal successors, (448), 6 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:16,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:16,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 89 [2022-11-16 10:54:16,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:16,330 INFO L130 PetriNetUnfolder]: 71/336 cut-off events. [2022-11-16 10:54:16,330 INFO L131 PetriNetUnfolder]: For 1526/1645 co-relation queries the response was YES. [2022-11-16 10:54:16,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1172 conditions, 336 events. 71/336 cut-off events. For 1526/1645 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1577 event pairs, 12 based on Foata normal form. 24/347 useless extension candidates. Maximal degree in co-relation 1116. Up to 88 conditions per place. [2022-11-16 10:54:16,335 INFO L137 encePairwiseOnDemand]: 82/89 looper letters, 17 selfloop transitions, 4 changer transitions 22/111 dead transitions. [2022-11-16 10:54:16,336 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 111 transitions, 727 flow [2022-11-16 10:54:16,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 10:54:16,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 10:54:16,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 694 transitions. [2022-11-16 10:54:16,340 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8664169787765293 [2022-11-16 10:54:16,340 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 694 transitions. [2022-11-16 10:54:16,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 694 transitions. [2022-11-16 10:54:16,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:16,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 694 transitions. [2022-11-16 10:54:16,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.11111111111111) internal successors, (694), 9 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:16,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 89.0) internal successors, (890), 10 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:16,347 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 89.0) internal successors, (890), 10 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:16,347 INFO L175 Difference]: Start difference. First operand has 113 places, 84 transitions, 389 flow. Second operand 9 states and 694 transitions. [2022-11-16 10:54:16,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 111 transitions, 727 flow [2022-11-16 10:54:16,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 111 transitions, 679 flow, removed 24 selfloop flow, removed 3 redundant places. [2022-11-16 10:54:16,357 INFO L231 Difference]: Finished difference. Result has 116 places, 87 transitions, 443 flow [2022-11-16 10:54:16,358 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=443, PETRI_PLACES=116, PETRI_TRANSITIONS=87} [2022-11-16 10:54:16,360 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 35 predicate places. [2022-11-16 10:54:16,361 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 87 transitions, 443 flow [2022-11-16 10:54:16,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.66666666666667) internal successors, (448), 6 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:16,361 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:16,361 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:16,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 10:54:16,362 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 10:54:16,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:16,364 INFO L85 PathProgramCache]: Analyzing trace with hash -929559784, now seen corresponding path program 1 times [2022-11-16 10:54:16,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:16,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536627121] [2022-11-16 10:54:16,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:16,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:16,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:16,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:16,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:16,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536627121] [2022-11-16 10:54:16,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536627121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:16,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:16,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 10:54:16,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935162837] [2022-11-16 10:54:16,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:16,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 10:54:16,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:16,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 10:54:16,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 10:54:16,622 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 89 [2022-11-16 10:54:16,623 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 87 transitions, 443 flow. Second operand has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:16,623 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:16,623 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 89 [2022-11-16 10:54:16,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:16,921 INFO L130 PetriNetUnfolder]: 71/396 cut-off events. [2022-11-16 10:54:16,921 INFO L131 PetriNetUnfolder]: For 1860/2337 co-relation queries the response was YES. [2022-11-16 10:54:16,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1430 conditions, 396 events. 71/396 cut-off events. For 1860/2337 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2150 event pairs, 1 based on Foata normal form. 8/394 useless extension candidates. Maximal degree in co-relation 1380. Up to 65 conditions per place. [2022-11-16 10:54:16,925 INFO L137 encePairwiseOnDemand]: 79/89 looper letters, 30 selfloop transitions, 19 changer transitions 23/126 dead transitions. [2022-11-16 10:54:16,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 126 transitions, 977 flow [2022-11-16 10:54:16,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 10:54:16,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 10:54:16,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 942 transitions. [2022-11-16 10:54:16,929 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8141745894554884 [2022-11-16 10:54:16,929 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 942 transitions. [2022-11-16 10:54:16,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 942 transitions. [2022-11-16 10:54:16,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:16,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 942 transitions. [2022-11-16 10:54:16,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 72.46153846153847) internal successors, (942), 13 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:16,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 89.0) internal successors, (1246), 14 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:16,940 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 89.0) internal successors, (1246), 14 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:16,940 INFO L175 Difference]: Start difference. First operand has 116 places, 87 transitions, 443 flow. Second operand 13 states and 942 transitions. [2022-11-16 10:54:16,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 126 transitions, 977 flow [2022-11-16 10:54:16,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 126 transitions, 924 flow, removed 24 selfloop flow, removed 10 redundant places. [2022-11-16 10:54:16,955 INFO L231 Difference]: Finished difference. Result has 124 places, 91 transitions, 570 flow [2022-11-16 10:54:16,956 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=570, PETRI_PLACES=124, PETRI_TRANSITIONS=91} [2022-11-16 10:54:16,957 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 43 predicate places. [2022-11-16 10:54:16,962 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 91 transitions, 570 flow [2022-11-16 10:54:16,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:16,965 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:16,965 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:16,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 10:54:16,965 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 10:54:16,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:16,967 INFO L85 PathProgramCache]: Analyzing trace with hash 953152435, now seen corresponding path program 1 times [2022-11-16 10:54:16,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:16,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047464377] [2022-11-16 10:54:16,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:16,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:16,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:17,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:17,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:17,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047464377] [2022-11-16 10:54:17,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047464377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:17,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:17,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 10:54:17,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123568365] [2022-11-16 10:54:17,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:17,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 10:54:17,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:17,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 10:54:17,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:54:17,237 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 89 [2022-11-16 10:54:17,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 91 transitions, 570 flow. Second operand has 8 states, 8 states have (on average 69.875) internal successors, (559), 8 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:17,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:17,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 89 [2022-11-16 10:54:17,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:17,438 INFO L130 PetriNetUnfolder]: 72/402 cut-off events. [2022-11-16 10:54:17,438 INFO L131 PetriNetUnfolder]: For 3222/3541 co-relation queries the response was YES. [2022-11-16 10:54:17,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1738 conditions, 402 events. 72/402 cut-off events. For 3222/3541 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2176 event pairs, 7 based on Foata normal form. 16/404 useless extension candidates. Maximal degree in co-relation 1670. Up to 79 conditions per place. [2022-11-16 10:54:17,442 INFO L137 encePairwiseOnDemand]: 78/89 looper letters, 23 selfloop transitions, 13 changer transitions 36/126 dead transitions. [2022-11-16 10:54:17,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 126 transitions, 1191 flow [2022-11-16 10:54:17,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 10:54:17,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 10:54:17,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 594 transitions. [2022-11-16 10:54:17,444 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8342696629213483 [2022-11-16 10:54:17,444 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 594 transitions. [2022-11-16 10:54:17,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 594 transitions. [2022-11-16 10:54:17,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:17,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 594 transitions. [2022-11-16 10:54:17,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 74.25) internal successors, (594), 8 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:17,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 89.0) internal successors, (801), 9 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:17,449 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 89.0) internal successors, (801), 9 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:17,449 INFO L175 Difference]: Start difference. First operand has 124 places, 91 transitions, 570 flow. Second operand 8 states and 594 transitions. [2022-11-16 10:54:17,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 126 transitions, 1191 flow [2022-11-16 10:54:17,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 126 transitions, 1117 flow, removed 37 selfloop flow, removed 9 redundant places. [2022-11-16 10:54:17,462 INFO L231 Difference]: Finished difference. Result has 117 places, 83 transitions, 476 flow [2022-11-16 10:54:17,463 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=476, PETRI_PLACES=117, PETRI_TRANSITIONS=83} [2022-11-16 10:54:17,463 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 36 predicate places. [2022-11-16 10:54:17,463 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 83 transitions, 476 flow [2022-11-16 10:54:17,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 69.875) internal successors, (559), 8 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:17,464 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:17,464 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:17,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 10:54:17,465 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 10:54:17,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:17,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1776942631, now seen corresponding path program 1 times [2022-11-16 10:54:17,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:17,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042275910] [2022-11-16 10:54:17,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:17,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:17,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:17,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:17,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:17,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042275910] [2022-11-16 10:54:17,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042275910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:17,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:17,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 10:54:17,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227366956] [2022-11-16 10:54:17,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:17,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:54:17,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:17,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:54:17,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:54:17,627 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 89 [2022-11-16 10:54:17,628 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 83 transitions, 476 flow. Second operand has 6 states, 6 states have (on average 73.66666666666667) internal successors, (442), 6 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:17,628 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:17,628 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 89 [2022-11-16 10:54:17,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:17,933 INFO L130 PetriNetUnfolder]: 431/1166 cut-off events. [2022-11-16 10:54:17,933 INFO L131 PetriNetUnfolder]: For 1905/1961 co-relation queries the response was YES. [2022-11-16 10:54:17,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2678 conditions, 1166 events. 431/1166 cut-off events. For 1905/1961 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8639 event pairs, 24 based on Foata normal form. 3/1058 useless extension candidates. Maximal degree in co-relation 2613. Up to 312 conditions per place. [2022-11-16 10:54:17,941 INFO L137 encePairwiseOnDemand]: 79/89 looper letters, 20 selfloop transitions, 15 changer transitions 11/115 dead transitions. [2022-11-16 10:54:17,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 115 transitions, 636 flow [2022-11-16 10:54:17,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 10:54:17,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 10:54:17,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 768 transitions. [2022-11-16 10:54:17,944 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8629213483146068 [2022-11-16 10:54:17,945 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 768 transitions. [2022-11-16 10:54:17,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 768 transitions. [2022-11-16 10:54:17,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:17,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 768 transitions. [2022-11-16 10:54:17,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 76.8) internal successors, (768), 10 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:17,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 89.0) internal successors, (979), 11 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:17,950 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 89.0) internal successors, (979), 11 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:17,950 INFO L175 Difference]: Start difference. First operand has 117 places, 83 transitions, 476 flow. Second operand 10 states and 768 transitions. [2022-11-16 10:54:17,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 115 transitions, 636 flow [2022-11-16 10:54:17,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 115 transitions, 577 flow, removed 9 selfloop flow, removed 9 redundant places. [2022-11-16 10:54:17,962 INFO L231 Difference]: Finished difference. Result has 120 places, 98 transitions, 526 flow [2022-11-16 10:54:17,963 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=526, PETRI_PLACES=120, PETRI_TRANSITIONS=98} [2022-11-16 10:54:17,966 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 39 predicate places. [2022-11-16 10:54:17,966 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 98 transitions, 526 flow [2022-11-16 10:54:17,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.66666666666667) internal successors, (442), 6 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:17,967 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:17,967 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:17,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 10:54:17,967 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 10:54:17,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:17,968 INFO L85 PathProgramCache]: Analyzing trace with hash -432928503, now seen corresponding path program 1 times [2022-11-16 10:54:17,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:17,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259754819] [2022-11-16 10:54:17,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:17,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:18,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:18,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:18,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259754819] [2022-11-16 10:54:18,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259754819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:18,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:18,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 10:54:18,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952887486] [2022-11-16 10:54:18,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:18,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 10:54:18,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:18,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 10:54:18,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 10:54:18,186 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 89 [2022-11-16 10:54:18,187 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 98 transitions, 526 flow. Second operand has 7 states, 7 states have (on average 73.57142857142857) internal successors, (515), 7 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:18,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:18,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 89 [2022-11-16 10:54:18,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:18,541 INFO L130 PetriNetUnfolder]: 290/983 cut-off events. [2022-11-16 10:54:18,541 INFO L131 PetriNetUnfolder]: For 1887/2039 co-relation queries the response was YES. [2022-11-16 10:54:18,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3070 conditions, 983 events. 290/983 cut-off events. For 1887/2039 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 7787 event pairs, 3 based on Foata normal form. 58/984 useless extension candidates. Maximal degree in co-relation 3005. Up to 215 conditions per place. [2022-11-16 10:54:18,548 INFO L137 encePairwiseOnDemand]: 79/89 looper letters, 23 selfloop transitions, 17 changer transitions 30/136 dead transitions. [2022-11-16 10:54:18,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 136 transitions, 840 flow [2022-11-16 10:54:18,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 10:54:18,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 10:54:18,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 995 transitions. [2022-11-16 10:54:18,552 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8599827139152982 [2022-11-16 10:54:18,552 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 995 transitions. [2022-11-16 10:54:18,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 995 transitions. [2022-11-16 10:54:18,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:18,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 995 transitions. [2022-11-16 10:54:18,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 76.53846153846153) internal successors, (995), 13 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:18,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 89.0) internal successors, (1246), 14 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:18,559 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 89.0) internal successors, (1246), 14 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:18,559 INFO L175 Difference]: Start difference. First operand has 120 places, 98 transitions, 526 flow. Second operand 13 states and 995 transitions. [2022-11-16 10:54:18,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 136 transitions, 840 flow [2022-11-16 10:54:18,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 136 transitions, 796 flow, removed 21 selfloop flow, removed 4 redundant places. [2022-11-16 10:54:18,570 INFO L231 Difference]: Finished difference. Result has 135 places, 99 transitions, 562 flow [2022-11-16 10:54:18,570 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=562, PETRI_PLACES=135, PETRI_TRANSITIONS=99} [2022-11-16 10:54:18,571 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 54 predicate places. [2022-11-16 10:54:18,571 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 99 transitions, 562 flow [2022-11-16 10:54:18,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.57142857142857) internal successors, (515), 7 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:18,572 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:18,572 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:18,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 10:54:18,572 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 10:54:18,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:18,573 INFO L85 PathProgramCache]: Analyzing trace with hash 150499692, now seen corresponding path program 1 times [2022-11-16 10:54:18,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:18,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821174281] [2022-11-16 10:54:18,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:18,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:18,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:18,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:18,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821174281] [2022-11-16 10:54:18,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821174281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:18,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:18,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 10:54:18,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496541385] [2022-11-16 10:54:18,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:18,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 10:54:18,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:18,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 10:54:18,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:54:18,785 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 89 [2022-11-16 10:54:18,786 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 99 transitions, 562 flow. Second operand has 8 states, 8 states have (on average 73.5) internal successors, (588), 8 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:18,786 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:18,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 89 [2022-11-16 10:54:18,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:19,115 INFO L130 PetriNetUnfolder]: 90/545 cut-off events. [2022-11-16 10:54:19,115 INFO L131 PetriNetUnfolder]: For 2028/2535 co-relation queries the response was YES. [2022-11-16 10:54:19,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1970 conditions, 545 events. 90/545 cut-off events. For 2028/2535 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4263 event pairs, 1 based on Foata normal form. 102/619 useless extension candidates. Maximal degree in co-relation 1940. Up to 151 conditions per place. [2022-11-16 10:54:19,118 INFO L137 encePairwiseOnDemand]: 80/89 looper letters, 9 selfloop transitions, 12 changer transitions 39/118 dead transitions. [2022-11-16 10:54:19,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 118 transitions, 800 flow [2022-11-16 10:54:19,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 10:54:19,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 10:54:19,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1129 transitions. [2022-11-16 10:54:19,121 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8456928838951311 [2022-11-16 10:54:19,122 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1129 transitions. [2022-11-16 10:54:19,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1129 transitions. [2022-11-16 10:54:19,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:19,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1129 transitions. [2022-11-16 10:54:19,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 75.26666666666667) internal successors, (1129), 15 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:19,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 89.0) internal successors, (1424), 16 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:19,129 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 89.0) internal successors, (1424), 16 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:19,129 INFO L175 Difference]: Start difference. First operand has 135 places, 99 transitions, 562 flow. Second operand 15 states and 1129 transitions. [2022-11-16 10:54:19,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 118 transitions, 800 flow [2022-11-16 10:54:19,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 118 transitions, 733 flow, removed 19 selfloop flow, removed 13 redundant places. [2022-11-16 10:54:19,141 INFO L231 Difference]: Finished difference. Result has 139 places, 77 transitions, 355 flow [2022-11-16 10:54:19,141 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=355, PETRI_PLACES=139, PETRI_TRANSITIONS=77} [2022-11-16 10:54:19,144 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 58 predicate places. [2022-11-16 10:54:19,144 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 77 transitions, 355 flow [2022-11-16 10:54:19,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 73.5) internal successors, (588), 8 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:19,145 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:19,145 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:19,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 10:54:19,145 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 10:54:19,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:19,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1153580077, now seen corresponding path program 1 times [2022-11-16 10:54:19,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:19,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485441560] [2022-11-16 10:54:19,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:19,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:19,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:19,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:19,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485441560] [2022-11-16 10:54:19,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485441560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:19,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:19,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 10:54:19,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301682] [2022-11-16 10:54:19,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:19,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 10:54:19,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:19,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 10:54:19,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:54:19,370 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 89 [2022-11-16 10:54:19,370 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 77 transitions, 355 flow. Second operand has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:19,371 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:19,371 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 89 [2022-11-16 10:54:19,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:19,478 INFO L130 PetriNetUnfolder]: 11/126 cut-off events. [2022-11-16 10:54:19,479 INFO L131 PetriNetUnfolder]: For 237/245 co-relation queries the response was YES. [2022-11-16 10:54:19,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 126 events. 11/126 cut-off events. For 237/245 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 247 event pairs, 0 based on Foata normal form. 1/126 useless extension candidates. Maximal degree in co-relation 310. Up to 13 conditions per place. [2022-11-16 10:54:19,480 INFO L137 encePairwiseOnDemand]: 80/89 looper letters, 0 selfloop transitions, 0 changer transitions 79/79 dead transitions. [2022-11-16 10:54:19,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 79 transitions, 409 flow [2022-11-16 10:54:19,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 10:54:19,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 10:54:19,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 634 transitions. [2022-11-16 10:54:19,482 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7915106117353309 [2022-11-16 10:54:19,482 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 634 transitions. [2022-11-16 10:54:19,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 634 transitions. [2022-11-16 10:54:19,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:19,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 634 transitions. [2022-11-16 10:54:19,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 70.44444444444444) internal successors, (634), 9 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:19,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 89.0) internal successors, (890), 10 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:19,487 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 89.0) internal successors, (890), 10 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:19,487 INFO L175 Difference]: Start difference. First operand has 139 places, 77 transitions, 355 flow. Second operand 9 states and 634 transitions. [2022-11-16 10:54:19,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 79 transitions, 409 flow [2022-11-16 10:54:19,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 79 transitions, 254 flow, removed 30 selfloop flow, removed 34 redundant places. [2022-11-16 10:54:19,490 INFO L231 Difference]: Finished difference. Result has 95 places, 0 transitions, 0 flow [2022-11-16 10:54:19,490 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=95, PETRI_TRANSITIONS=0} [2022-11-16 10:54:19,491 INFO L288 CegarLoopForPetriNet]: 81 programPoint places, 14 predicate places. [2022-11-16 10:54:19,491 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 0 transitions, 0 flow [2022-11-16 10:54:19,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:19,494 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-11-16 10:54:19,494 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-11-16 10:54:19,495 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-16 10:54:19,495 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-11-16 10:54:19,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 10:54:19,495 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:19,499 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 10:54:19,499 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 10:54:19,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 10:54:19 BasicIcfg [2022-11-16 10:54:19,504 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 10:54:19,505 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 10:54:19,505 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 10:54:19,505 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 10:54:19,506 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:54:13" (3/4) ... [2022-11-16 10:54:19,509 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 10:54:19,515 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-16 10:54:19,515 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-16 10:54:19,515 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-11-16 10:54:19,519 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-16 10:54:19,520 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 10:54:19,520 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 10:54:19,520 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 10:54:19,549 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50c9481-62c0-4ec9-b598-a216d47a8f5b/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 10:54:19,550 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 10:54:19,550 INFO L158 Benchmark]: Toolchain (without parser) took 7378.47ms. Allocated memory was 130.0MB in the beginning and 209.7MB in the end (delta: 79.7MB). Free memory was 91.7MB in the beginning and 100.8MB in the end (delta: -9.1MB). Peak memory consumption was 70.1MB. Max. memory is 16.1GB. [2022-11-16 10:54:19,551 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 130.0MB. Free memory is still 109.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 10:54:19,551 INFO L158 Benchmark]: CACSL2BoogieTranslator took 494.67ms. Allocated memory is still 130.0MB. Free memory was 91.4MB in the beginning and 97.0MB in the end (delta: -5.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 10:54:19,551 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.35ms. Allocated memory is still 130.0MB. Free memory was 97.0MB in the beginning and 94.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 10:54:19,552 INFO L158 Benchmark]: Boogie Preprocessor took 48.85ms. Allocated memory is still 130.0MB. Free memory was 94.9MB in the beginning and 93.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 10:54:19,552 INFO L158 Benchmark]: RCFGBuilder took 408.25ms. Allocated memory is still 130.0MB. Free memory was 93.8MB in the beginning and 80.2MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-16 10:54:19,553 INFO L158 Benchmark]: TraceAbstraction took 6303.72ms. Allocated memory was 130.0MB in the beginning and 209.7MB in the end (delta: 79.7MB). Free memory was 79.7MB in the beginning and 103.9MB in the end (delta: -24.2MB). Peak memory consumption was 57.6MB. Max. memory is 16.1GB. [2022-11-16 10:54:19,553 INFO L158 Benchmark]: Witness Printer took 44.81ms. Allocated memory is still 209.7MB. Free memory was 103.9MB in the beginning and 100.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 10:54:19,555 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 130.0MB. Free memory is still 109.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 494.67ms. Allocated memory is still 130.0MB. Free memory was 91.4MB in the beginning and 97.0MB in the end (delta: -5.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.35ms. Allocated memory is still 130.0MB. Free memory was 97.0MB in the beginning and 94.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.85ms. Allocated memory is still 130.0MB. Free memory was 94.9MB in the beginning and 93.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 408.25ms. Allocated memory is still 130.0MB. Free memory was 93.8MB in the beginning and 80.2MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 6303.72ms. Allocated memory was 130.0MB in the beginning and 209.7MB in the end (delta: 79.7MB). Free memory was 79.7MB in the beginning and 103.9MB in the end (delta: -24.2MB). Peak memory consumption was 57.6MB. Max. memory is 16.1GB. * Witness Printer took 44.81ms. Allocated memory is still 209.7MB. Free memory was 103.9MB in the beginning and 100.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 111 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.1s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 407 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 407 mSDsluCounter, 557 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 427 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 564 IncrementalHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 130 mSDtfsCounter, 564 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=570occurred in iteration=4, InterpolantAutomatonStates: 103, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 526 NumberOfCodeBlocks, 526 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 517 ConstructedInterpolants, 0 QuantifiedInterpolants, 2187 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 10:54:19,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f50c9481-62c0-4ec9-b598-a216d47a8f5b/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE