./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe000_power.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3d0a8ab-2c91-48b7-93ba-5048543003df/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3d0a8ab-2c91-48b7-93ba-5048543003df/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3d0a8ab-2c91-48b7-93ba-5048543003df/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3d0a8ab-2c91-48b7-93ba-5048543003df/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe000_power.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3d0a8ab-2c91-48b7-93ba-5048543003df/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3d0a8ab-2c91-48b7-93ba-5048543003df/bin/uautomizer-J5u9QxTXDZ --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 e872da92455c9ab0fe125378ae9802f1d4dfc806cea229583fb74f8b758e929f --- 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-dbf71c6-m [2022-10-17 10:36:36,692 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:36:36,695 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:36:36,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:36:36,759 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:36:36,760 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:36:36,763 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:36:36,766 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:36:36,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:36:36,771 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:36:36,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:36:36,775 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:36:36,775 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:36:36,777 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:36:36,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:36:36,781 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:36:36,782 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:36:36,784 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:36:36,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:36:36,791 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:36:36,794 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:36:36,796 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:36:36,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:36:36,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:36:36,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:36:36,807 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:36:36,808 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:36:36,810 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:36:36,811 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:36:36,812 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:36:36,813 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:36:36,814 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:36:36,816 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:36:36,817 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:36:36,819 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:36:36,819 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:36:36,820 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:36:36,821 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:36:36,821 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:36:36,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:36:36,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:36:36,825 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3d0a8ab-2c91-48b7-93ba-5048543003df/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:36:36,861 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:36:36,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:36:36,861 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:36:36,862 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:36:36,862 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:36:36,862 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:36:36,863 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:36:36,863 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:36:36,864 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:36:36,864 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:36:36,865 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:36:36,865 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:36:36,865 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:36:36,865 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:36:36,866 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:36:36,866 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:36:36,866 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:36:36,867 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:36:36,867 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:36:36,867 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:36:36,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:36:36,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:36:36,868 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:36:36,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:36:36,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:36:36,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:36:36,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:36:36,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:36:36,870 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:36:36,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:36:36,871 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:36:36,871 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:36:36,872 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:36:36,872 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_e3d0a8ab-2c91-48b7-93ba-5048543003df/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3d0a8ab-2c91-48b7-93ba-5048543003df/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e872da92455c9ab0fe125378ae9802f1d4dfc806cea229583fb74f8b758e929f [2022-10-17 10:36:37,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:36:37,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:36:37,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:36:37,251 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:36:37,252 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:36:37,253 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3d0a8ab-2c91-48b7-93ba-5048543003df/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/pthread-wmm/safe000_power.oepc.i [2022-10-17 10:36:37,337 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3d0a8ab-2c91-48b7-93ba-5048543003df/bin/uautomizer-J5u9QxTXDZ/data/d1057ef62/b99a395f26d647d9a81d83f1acd06305/FLAG22d099b75 [2022-10-17 10:36:38,008 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:36:38,009 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3d0a8ab-2c91-48b7-93ba-5048543003df/sv-benchmarks/c/pthread-wmm/safe000_power.oepc.i [2022-10-17 10:36:38,038 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3d0a8ab-2c91-48b7-93ba-5048543003df/bin/uautomizer-J5u9QxTXDZ/data/d1057ef62/b99a395f26d647d9a81d83f1acd06305/FLAG22d099b75 [2022-10-17 10:36:38,237 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3d0a8ab-2c91-48b7-93ba-5048543003df/bin/uautomizer-J5u9QxTXDZ/data/d1057ef62/b99a395f26d647d9a81d83f1acd06305 [2022-10-17 10:36:38,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:36:38,247 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:36:38,250 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:36:38,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:36:38,255 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:36:38,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:36:38" (1/1) ... [2022-10-17 10:36:38,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d437e55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:38, skipping insertion in model container [2022-10-17 10:36:38,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:36:38" (1/1) ... [2022-10-17 10:36:38,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:36:38,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:36:38,661 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3d0a8ab-2c91-48b7-93ba-5048543003df/sv-benchmarks/c/pthread-wmm/safe000_power.oepc.i[995,1008] [2022-10-17 10:36:39,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:36:39,089 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:36:39,107 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3d0a8ab-2c91-48b7-93ba-5048543003df/sv-benchmarks/c/pthread-wmm/safe000_power.oepc.i[995,1008] [2022-10-17 10:36:39,232 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:36:39,295 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:36:39,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:39 WrapperNode [2022-10-17 10:36:39,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:36:39,297 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:36:39,297 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:36:39,297 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:36:39,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:39" (1/1) ... [2022-10-17 10:36:39,361 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:39" (1/1) ... [2022-10-17 10:36:39,436 INFO L138 Inliner]: procedures = 176, calls = 84, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 259 [2022-10-17 10:36:39,436 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:36:39,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:36:39,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:36:39,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:36:39,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:39" (1/1) ... [2022-10-17 10:36:39,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:39" (1/1) ... [2022-10-17 10:36:39,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:39" (1/1) ... [2022-10-17 10:36:39,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:39" (1/1) ... [2022-10-17 10:36:39,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:39" (1/1) ... [2022-10-17 10:36:39,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:39" (1/1) ... [2022-10-17 10:36:39,516 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:39" (1/1) ... [2022-10-17 10:36:39,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:39" (1/1) ... [2022-10-17 10:36:39,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:36:39,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:36:39,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:36:39,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:36:39,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:39" (1/1) ... [2022-10-17 10:36:39,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:36:39,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3d0a8ab-2c91-48b7-93ba-5048543003df/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:36:39,577 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3d0a8ab-2c91-48b7-93ba-5048543003df/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:36:39,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3d0a8ab-2c91-48b7-93ba-5048543003df/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:36:39,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:36:39,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:36:39,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 10:36:39,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:36:39,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:36:39,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:36:39,626 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-10-17 10:36:39,650 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-10-17 10:36:39,650 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-10-17 10:36:39,651 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-10-17 10:36:39,651 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-10-17 10:36:39,651 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-10-17 10:36:39,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:36:39,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 10:36:39,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:36:39,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:36:39,654 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:36:39,876 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:36:39,878 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:36:41,437 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:36:42,872 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:36:42,872 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:36:42,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:36:42 BoogieIcfgContainer [2022-10-17 10:36:42,876 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:36:42,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:36:42,881 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:36:42,885 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:36:42,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:36:38" (1/3) ... [2022-10-17 10:36:42,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79ae0893 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:36:42, skipping insertion in model container [2022-10-17 10:36:42,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:39" (2/3) ... [2022-10-17 10:36:42,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79ae0893 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:36:42, skipping insertion in model container [2022-10-17 10:36:42,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:36:42" (3/3) ... [2022-10-17 10:36:42,889 INFO L112 eAbstractionObserver]: Analyzing ICFG safe000_power.oepc.i [2022-10-17 10:36:42,900 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:36:42,912 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:36:42,912 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:36:42,912 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:36:43,071 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 10:36:43,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 132 transitions, 279 flow [2022-10-17 10:36:43,259 INFO L130 PetriNetUnfolder]: 2/129 cut-off events. [2022-10-17 10:36:43,259 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:36:43,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 129 events. 2/129 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2022-10-17 10:36:43,267 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 132 transitions, 279 flow [2022-10-17 10:36:43,277 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 124 places, 115 transitions, 239 flow [2022-10-17 10:36:43,305 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:36:43,320 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;@33c36428, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:36:43,320 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-10-17 10:36:43,399 INFO L130 PetriNetUnfolder]: 1/114 cut-off events. [2022-10-17 10:36:43,400 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:36:43,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:36:43,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:36:43,402 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)] === [2022-10-17 10:36:43,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:36:43,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1014847121, now seen corresponding path program 1 times [2022-10-17 10:36:43,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:36:43,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537810015] [2022-10-17 10:36:43,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:36:43,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:36:44,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:36:45,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:36:45,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:36:45,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537810015] [2022-10-17 10:36:45,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537810015] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:36:45,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:36:45,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:36:45,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713240066] [2022-10-17 10:36:45,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:36:45,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:36:45,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:36:45,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:36:45,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:36:45,122 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 132 [2022-10-17 10:36:45,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 115 transitions, 239 flow. Second operand has 6 states, 6 states have (on average 114.83333333333333) internal successors, (689), 6 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:45,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:36:45,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 132 [2022-10-17 10:36:45,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:36:46,247 INFO L130 PetriNetUnfolder]: 166/471 cut-off events. [2022-10-17 10:36:46,247 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-10-17 10:36:46,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 776 conditions, 471 events. 166/471 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2143 event pairs, 34 based on Foata normal form. 15/471 useless extension candidates. Maximal degree in co-relation 704. Up to 141 conditions per place. [2022-10-17 10:36:46,258 INFO L137 encePairwiseOnDemand]: 125/132 looper letters, 16 selfloop transitions, 2 changer transitions 25/142 dead transitions. [2022-10-17 10:36:46,258 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 142 transitions, 379 flow [2022-10-17 10:36:46,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:36:46,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:36:46,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1064 transitions. [2022-10-17 10:36:46,285 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8956228956228957 [2022-10-17 10:36:46,286 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1064 transitions. [2022-10-17 10:36:46,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1064 transitions. [2022-10-17 10:36:46,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:36:46,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1064 transitions. [2022-10-17 10:36:46,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 118.22222222222223) internal successors, (1064), 9 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:46,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 132.0) internal successors, (1320), 10 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:46,322 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 132.0) internal successors, (1320), 10 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:46,324 INFO L175 Difference]: Start difference. First operand has 124 places, 115 transitions, 239 flow. Second operand 9 states and 1064 transitions. [2022-10-17 10:36:46,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 142 transitions, 379 flow [2022-10-17 10:36:46,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 142 transitions, 376 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-10-17 10:36:46,336 INFO L231 Difference]: Finished difference. Result has 136 places, 114 transitions, 254 flow [2022-10-17 10:36:46,339 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=254, PETRI_PLACES=136, PETRI_TRANSITIONS=114} [2022-10-17 10:36:46,343 INFO L287 CegarLoopForPetriNet]: 124 programPoint places, 12 predicate places. [2022-10-17 10:36:46,344 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 114 transitions, 254 flow [2022-10-17 10:36:46,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.83333333333333) internal successors, (689), 6 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:46,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:36:46,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:36:46,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:36:46,347 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)] === [2022-10-17 10:36:46,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:36:46,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1338768656, now seen corresponding path program 1 times [2022-10-17 10:36:46,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:36:46,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960734635] [2022-10-17 10:36:46,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:36:46,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:36:46,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:36:47,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:36:47,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:36:47,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960734635] [2022-10-17 10:36:47,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960734635] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:36:47,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:36:47,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:36:47,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140184880] [2022-10-17 10:36:47,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:36:47,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:36:47,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:36:47,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:36:47,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:36:47,074 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 132 [2022-10-17 10:36:47,076 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 114 transitions, 254 flow. Second operand has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:47,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:36:47,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 132 [2022-10-17 10:36:47,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:36:47,961 INFO L130 PetriNetUnfolder]: 189/535 cut-off events. [2022-10-17 10:36:47,962 INFO L131 PetriNetUnfolder]: For 123/123 co-relation queries the response was YES. [2022-10-17 10:36:47,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1019 conditions, 535 events. 189/535 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2414 event pairs, 31 based on Foata normal form. 12/526 useless extension candidates. Maximal degree in co-relation 945. Up to 175 conditions per place. [2022-10-17 10:36:47,971 INFO L137 encePairwiseOnDemand]: 126/132 looper letters, 19 selfloop transitions, 2 changer transitions 25/144 dead transitions. [2022-10-17 10:36:47,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 144 transitions, 429 flow [2022-10-17 10:36:47,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:36:47,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:36:47,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1056 transitions. [2022-10-17 10:36:47,978 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2022-10-17 10:36:47,979 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1056 transitions. [2022-10-17 10:36:47,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1056 transitions. [2022-10-17 10:36:47,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:36:47,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1056 transitions. [2022-10-17 10:36:47,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 117.33333333333333) internal successors, (1056), 9 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:47,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 132.0) internal successors, (1320), 10 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:47,992 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 132.0) internal successors, (1320), 10 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:47,992 INFO L175 Difference]: Start difference. First operand has 136 places, 114 transitions, 254 flow. Second operand 9 states and 1056 transitions. [2022-10-17 10:36:47,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 144 transitions, 429 flow [2022-10-17 10:36:48,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 144 transitions, 395 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-10-17 10:36:48,008 INFO L231 Difference]: Finished difference. Result has 137 places, 114 transitions, 258 flow [2022-10-17 10:36:48,009 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=258, PETRI_PLACES=137, PETRI_TRANSITIONS=114} [2022-10-17 10:36:48,010 INFO L287 CegarLoopForPetriNet]: 124 programPoint places, 13 predicate places. [2022-10-17 10:36:48,010 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 114 transitions, 258 flow [2022-10-17 10:36:48,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:48,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:36:48,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:36:48,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:36:48,013 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)] === [2022-10-17 10:36:48,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:36:48,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1672217775, now seen corresponding path program 1 times [2022-10-17 10:36:48,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:36:48,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739258849] [2022-10-17 10:36:48,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:36:48,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:36:48,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:36:48,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:36:48,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:36:48,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739258849] [2022-10-17 10:36:48,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739258849] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:36:48,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:36:48,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:36:48,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991647977] [2022-10-17 10:36:48,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:36:48,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:36:48,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:36:48,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:36:48,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:36:48,621 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 132 [2022-10-17 10:36:48,623 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 114 transitions, 258 flow. Second operand has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:48,623 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:36:48,623 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 132 [2022-10-17 10:36:48,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:36:49,465 INFO L130 PetriNetUnfolder]: 205/624 cut-off events. [2022-10-17 10:36:49,466 INFO L131 PetriNetUnfolder]: For 136/136 co-relation queries the response was YES. [2022-10-17 10:36:49,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1190 conditions, 624 events. 205/624 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3111 event pairs, 73 based on Foata normal form. 12/598 useless extension candidates. Maximal degree in co-relation 1151. Up to 102 conditions per place. [2022-10-17 10:36:49,473 INFO L137 encePairwiseOnDemand]: 124/132 looper letters, 23 selfloop transitions, 4 changer transitions 29/152 dead transitions. [2022-10-17 10:36:49,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 152 transitions, 481 flow [2022-10-17 10:36:49,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:36:49,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 10:36:49,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1158 transitions. [2022-10-17 10:36:49,481 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8772727272727273 [2022-10-17 10:36:49,481 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1158 transitions. [2022-10-17 10:36:49,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1158 transitions. [2022-10-17 10:36:49,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:36:49,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1158 transitions. [2022-10-17 10:36:49,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 115.8) internal successors, (1158), 10 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:49,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 132.0) internal successors, (1452), 11 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:49,496 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 132.0) internal successors, (1452), 11 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:49,497 INFO L175 Difference]: Start difference. First operand has 137 places, 114 transitions, 258 flow. Second operand 10 states and 1158 transitions. [2022-10-17 10:36:49,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 152 transitions, 481 flow [2022-10-17 10:36:49,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 152 transitions, 447 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-10-17 10:36:49,509 INFO L231 Difference]: Finished difference. Result has 140 places, 114 transitions, 272 flow [2022-10-17 10:36:49,509 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=272, PETRI_PLACES=140, PETRI_TRANSITIONS=114} [2022-10-17 10:36:49,513 INFO L287 CegarLoopForPetriNet]: 124 programPoint places, 16 predicate places. [2022-10-17 10:36:49,513 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 114 transitions, 272 flow [2022-10-17 10:36:49,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:49,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:36:49,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:36:49,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:36:49,515 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)] === [2022-10-17 10:36:49,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:36:49,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1396263298, now seen corresponding path program 1 times [2022-10-17 10:36:49,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:36:49,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742321991] [2022-10-17 10:36:49,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:36:49,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:36:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:36:53,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:36:53,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:36:53,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742321991] [2022-10-17 10:36:53,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742321991] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:36:53,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:36:53,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-17 10:36:53,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796614379] [2022-10-17 10:36:53,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:36:53,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 10:36:53,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:36:53,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 10:36:53,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:36:53,428 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 132 [2022-10-17 10:36:53,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 114 transitions, 272 flow. Second operand has 11 states, 11 states have (on average 102.18181818181819) internal successors, (1124), 11 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:53,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:36:53,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 132 [2022-10-17 10:36:53,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:36:54,278 INFO L130 PetriNetUnfolder]: 160/510 cut-off events. [2022-10-17 10:36:54,278 INFO L131 PetriNetUnfolder]: For 215/218 co-relation queries the response was YES. [2022-10-17 10:36:54,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1021 conditions, 510 events. 160/510 cut-off events. For 215/218 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2039 event pairs, 58 based on Foata normal form. 11/503 useless extension candidates. Maximal degree in co-relation 939. Up to 193 conditions per place. [2022-10-17 10:36:54,285 INFO L137 encePairwiseOnDemand]: 119/132 looper letters, 24 selfloop transitions, 9 changer transitions 28/147 dead transitions. [2022-10-17 10:36:54,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 147 transitions, 484 flow [2022-10-17 10:36:54,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:36:54,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:36:54,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1363 transitions. [2022-10-17 10:36:54,293 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7942890442890443 [2022-10-17 10:36:54,293 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1363 transitions. [2022-10-17 10:36:54,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1363 transitions. [2022-10-17 10:36:54,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:36:54,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1363 transitions. [2022-10-17 10:36:54,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 104.84615384615384) internal successors, (1363), 13 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:54,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 132.0) internal successors, (1848), 14 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:54,309 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 132.0) internal successors, (1848), 14 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:54,309 INFO L175 Difference]: Start difference. First operand has 140 places, 114 transitions, 272 flow. Second operand 13 states and 1363 transitions. [2022-10-17 10:36:54,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 147 transitions, 484 flow [2022-10-17 10:36:54,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 147 transitions, 438 flow, removed 18 selfloop flow, removed 10 redundant places. [2022-10-17 10:36:54,318 INFO L231 Difference]: Finished difference. Result has 143 places, 118 transitions, 317 flow [2022-10-17 10:36:54,318 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=317, PETRI_PLACES=143, PETRI_TRANSITIONS=118} [2022-10-17 10:36:54,320 INFO L287 CegarLoopForPetriNet]: 124 programPoint places, 19 predicate places. [2022-10-17 10:36:54,320 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 118 transitions, 317 flow [2022-10-17 10:36:54,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 102.18181818181819) internal successors, (1124), 11 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:36:54,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:36:54,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:36:54,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:36:54,322 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)] === [2022-10-17 10:36:54,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:36:54,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1527661534, now seen corresponding path program 2 times [2022-10-17 10:36:54,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:36:54,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037255238] [2022-10-17 10:36:54,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:36:54,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:36:54,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:01,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:37:01,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:37:01,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037255238] [2022-10-17 10:37:01,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037255238] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:37:01,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:37:01,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-10-17 10:37:01,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429111277] [2022-10-17 10:37:01,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:37:01,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-17 10:37:01,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:37:01,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-17 10:37:01,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:37:01,090 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 132 [2022-10-17 10:37:01,094 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 118 transitions, 317 flow. Second operand has 16 states, 16 states have (on average 97.75) internal successors, (1564), 16 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:37:01,094 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:37:01,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 132 [2022-10-17 10:37:01,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:37:01,952 INFO L130 PetriNetUnfolder]: 143/489 cut-off events. [2022-10-17 10:37:01,952 INFO L131 PetriNetUnfolder]: For 853/861 co-relation queries the response was YES. [2022-10-17 10:37:01,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1401 conditions, 489 events. 143/489 cut-off events. For 853/861 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1962 event pairs, 66 based on Foata normal form. 10/479 useless extension candidates. Maximal degree in co-relation 1304. Up to 175 conditions per place. [2022-10-17 10:37:01,959 INFO L137 encePairwiseOnDemand]: 117/132 looper letters, 26 selfloop transitions, 13 changer transitions 25/146 dead transitions. [2022-10-17 10:37:01,959 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 146 transitions, 659 flow [2022-10-17 10:37:01,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-17 10:37:01,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-10-17 10:37:01,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1696 transitions. [2022-10-17 10:37:01,968 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7557932263814616 [2022-10-17 10:37:01,969 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1696 transitions. [2022-10-17 10:37:01,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1696 transitions. [2022-10-17 10:37:01,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:37:01,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1696 transitions. [2022-10-17 10:37:01,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 99.76470588235294) internal successors, (1696), 17 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:37:01,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 132.0) internal successors, (2376), 18 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:37:01,989 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 132.0) internal successors, (2376), 18 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:37:01,989 INFO L175 Difference]: Start difference. First operand has 143 places, 118 transitions, 317 flow. Second operand 17 states and 1696 transitions. [2022-10-17 10:37:01,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 146 transitions, 659 flow [2022-10-17 10:37:01,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 146 transitions, 632 flow, removed 7 selfloop flow, removed 8 redundant places. [2022-10-17 10:37:01,998 INFO L231 Difference]: Finished difference. Result has 152 places, 120 transitions, 379 flow [2022-10-17 10:37:01,998 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=379, PETRI_PLACES=152, PETRI_TRANSITIONS=120} [2022-10-17 10:37:02,001 INFO L287 CegarLoopForPetriNet]: 124 programPoint places, 28 predicate places. [2022-10-17 10:37:02,002 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 120 transitions, 379 flow [2022-10-17 10:37:02,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 97.75) internal successors, (1564), 16 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:37:02,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:37:02,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:37:02,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:37:02,004 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)] === [2022-10-17 10:37:02,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:37:02,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1755171717, now seen corresponding path program 1 times [2022-10-17 10:37:02,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:37:02,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302124186] [2022-10-17 10:37:02,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:37:02,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:37:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:02,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:37:02,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:37:02,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302124186] [2022-10-17 10:37:02,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302124186] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:37:02,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:37:02,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:37:02,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274466227] [2022-10-17 10:37:02,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:37:02,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:37:02,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:37:02,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:37:02,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:37:02,736 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 132 [2022-10-17 10:37:02,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 120 transitions, 379 flow. Second operand has 6 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:37:02,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:37:02,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 132 [2022-10-17 10:37:02,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand