./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c --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_8a113236-64d6-4631-a372-69b020cae823/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a113236-64d6-4631-a372-69b020cae823/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_8a113236-64d6-4631-a372-69b020cae823/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a113236-64d6-4631-a372-69b020cae823/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a113236-64d6-4631-a372-69b020cae823/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_8a113236-64d6-4631-a372-69b020cae823/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 c870162e8691a06e8bb6a8083be9eaf3f7ddc94357fb302a6e1fdd1b7aa873f8 --- 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 10:20:18,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:20:18,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:20:18,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:20:18,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:20:18,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:20:18,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:20:18,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:20:18,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:20:18,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:20:18,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:20:18,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:20:18,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:20:18,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:20:18,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:20:18,581 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:20:18,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:20:18,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:20:18,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:20:18,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:20:18,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:20:18,609 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:20:18,611 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:20:18,612 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:20:18,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:20:18,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:20:18,619 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:20:18,620 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:20:18,620 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:20:18,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:20:18,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:20:18,623 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:20:18,625 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:20:18,626 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:20:18,627 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:20:18,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:20:18,629 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:20:18,629 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:20:18,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:20:18,631 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:20:18,632 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:20:18,633 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a113236-64d6-4631-a372-69b020cae823/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:20:18,659 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:20:18,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:20:18,660 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:20:18,660 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:20:18,661 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:20:18,661 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:20:18,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:20:18,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:20:18,666 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:20:18,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:20:18,666 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:20:18,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:20:18,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:20:18,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:20:18,667 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:20:18,667 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:20:18,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:20:18,668 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:20:18,668 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:20:18,668 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:20:18,668 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:20:18,668 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:20:18,669 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:20:18,669 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:20:18,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:20:18,669 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:20:18,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:20:18,670 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:20:18,670 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:20:18,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:20:18,670 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:20:18,670 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:20:18,671 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:20:18,671 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_8a113236-64d6-4631-a372-69b020cae823/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a113236-64d6-4631-a372-69b020cae823/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c870162e8691a06e8bb6a8083be9eaf3f7ddc94357fb302a6e1fdd1b7aa873f8 [2022-10-17 10:20:18,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:20:18,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:20:18,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:20:18,965 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:20:18,966 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:20:18,967 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a113236-64d6-4631-a372-69b020cae823/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2022-10-17 10:20:19,050 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a113236-64d6-4631-a372-69b020cae823/bin/uautomizer-J5u9QxTXDZ/data/5c0e132dc/7b2c9ce4c6a143e7a4e9c8ef4518b5c2/FLAG8430643a5 [2022-10-17 10:20:19,515 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:20:19,519 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a113236-64d6-4631-a372-69b020cae823/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2022-10-17 10:20:19,529 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a113236-64d6-4631-a372-69b020cae823/bin/uautomizer-J5u9QxTXDZ/data/5c0e132dc/7b2c9ce4c6a143e7a4e9c8ef4518b5c2/FLAG8430643a5 [2022-10-17 10:20:19,846 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a113236-64d6-4631-a372-69b020cae823/bin/uautomizer-J5u9QxTXDZ/data/5c0e132dc/7b2c9ce4c6a143e7a4e9c8ef4518b5c2 [2022-10-17 10:20:19,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:20:19,855 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:20:19,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:20:19,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:20:19,860 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:20:19,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:20:19" (1/1) ... [2022-10-17 10:20:19,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74000370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:19, skipping insertion in model container [2022-10-17 10:20:19,864 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:20:19" (1/1) ... [2022-10-17 10:20:19,872 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:20:19,900 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:20:20,112 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_8a113236-64d6-4631-a372-69b020cae823/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c[2755,2768] [2022-10-17 10:20:20,128 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:20:20,136 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:20:20,164 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_8a113236-64d6-4631-a372-69b020cae823/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c[2755,2768] [2022-10-17 10:20:20,168 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:20:20,185 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:20:20,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:20 WrapperNode [2022-10-17 10:20:20,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:20:20,187 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:20:20,187 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:20:20,187 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:20:20,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:20" (1/1) ... [2022-10-17 10:20:20,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:20" (1/1) ... [2022-10-17 10:20:20,255 INFO L138 Inliner]: procedures = 23, calls = 41, calls flagged for inlining = 17, calls inlined = 31, statements flattened = 277 [2022-10-17 10:20:20,255 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:20:20,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:20:20,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:20:20,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:20:20,264 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:20" (1/1) ... [2022-10-17 10:20:20,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:20" (1/1) ... [2022-10-17 10:20:20,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:20" (1/1) ... [2022-10-17 10:20:20,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:20" (1/1) ... [2022-10-17 10:20:20,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:20" (1/1) ... [2022-10-17 10:20:20,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:20" (1/1) ... [2022-10-17 10:20:20,288 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:20" (1/1) ... [2022-10-17 10:20:20,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:20" (1/1) ... [2022-10-17 10:20:20,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:20:20,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:20:20,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:20:20,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:20:20,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:20" (1/1) ... [2022-10-17 10:20:20,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:20:20,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a113236-64d6-4631-a372-69b020cae823/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:20:20,353 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a113236-64d6-4631-a372-69b020cae823/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:20:20,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a113236-64d6-4631-a372-69b020cae823/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:20:20,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:20:20,398 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-10-17 10:20:20,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-10-17 10:20:20,398 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-10-17 10:20:20,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-10-17 10:20:20,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:20:20,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:20:20,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:20:20,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:20:20,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:20:20,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:20:20,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:20:20,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:20:20,401 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 10:20:20,506 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:20:20,509 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:20:21,155 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:20:21,174 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:20:21,174 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-17 10:20:21,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:20:21 BoogieIcfgContainer [2022-10-17 10:20:21,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:20:21,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:20:21,180 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:20:21,184 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:20:21,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:20:19" (1/3) ... [2022-10-17 10:20:21,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d9fa2f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:20:21, skipping insertion in model container [2022-10-17 10:20:21,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:20" (2/3) ... [2022-10-17 10:20:21,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d9fa2f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:20:21, skipping insertion in model container [2022-10-17 10:20:21,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:20:21" (3/3) ... [2022-10-17 10:20:21,188 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-1.wvr.c [2022-10-17 10:20:21,197 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:20:21,208 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:20:21,209 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:20:21,209 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:20:21,399 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-10-17 10:20:21,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 375 places, 396 transitions, 808 flow [2022-10-17 10:20:21,678 INFO L130 PetriNetUnfolder]: 28/394 cut-off events. [2022-10-17 10:20:21,678 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-10-17 10:20:21,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 394 events. 28/394 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 915 event pairs, 0 based on Foata normal form. 0/365 useless extension candidates. Maximal degree in co-relation 271. Up to 2 conditions per place. [2022-10-17 10:20:21,698 INFO L82 GeneralOperation]: Start removeDead. Operand has 375 places, 396 transitions, 808 flow [2022-10-17 10:20:21,711 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 364 places, 385 transitions, 782 flow [2022-10-17 10:20:21,729 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:20:21,736 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;@3d0a2f2a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:20:21,737 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-10-17 10:20:21,839 INFO L130 PetriNetUnfolder]: 28/384 cut-off events. [2022-10-17 10:20:21,840 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-10-17 10:20:21,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:20:21,841 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:20:21,841 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 10:20:21,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:21,847 INFO L85 PathProgramCache]: Analyzing trace with hash -917878546, now seen corresponding path program 1 times [2022-10-17 10:20:21,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:21,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562778915] [2022-10-17 10:20:21,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:21,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:22,293 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 10:20:22,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:22,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562778915] [2022-10-17 10:20:22,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562778915] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:20:22,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:20:22,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:20:22,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924909792] [2022-10-17 10:20:22,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:20:22,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:20:22,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:22,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:20:22,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:20:22,352 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 368 out of 396 [2022-10-17 10:20:22,362 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 385 transitions, 782 flow. Second operand has 2 states, 2 states have (on average 371.0) internal successors, (742), 2 states have internal predecessors, (742), 0 states have call successors, (0), 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 10:20:22,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:20:22,364 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 368 of 396 [2022-10-17 10:20:22,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:20:22,504 INFO L130 PetriNetUnfolder]: 5/362 cut-off events. [2022-10-17 10:20:22,504 INFO L131 PetriNetUnfolder]: For 8/9 co-relation queries the response was YES. [2022-10-17 10:20:22,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 362 events. 5/362 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 907 event pairs, 0 based on Foata normal form. 29/366 useless extension candidates. Maximal degree in co-relation 254. Up to 5 conditions per place. [2022-10-17 10:20:22,512 INFO L137 encePairwiseOnDemand]: 373/396 looper letters, 4 selfloop transitions, 0 changer transitions 4/362 dead transitions. [2022-10-17 10:20:22,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 362 transitions, 744 flow [2022-10-17 10:20:22,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:20:22,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-10-17 10:20:22,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 763 transitions. [2022-10-17 10:20:22,537 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9633838383838383 [2022-10-17 10:20:22,538 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 763 transitions. [2022-10-17 10:20:22,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 763 transitions. [2022-10-17 10:20:22,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:20:22,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 763 transitions. [2022-10-17 10:20:22,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 381.5) internal successors, (763), 2 states have internal predecessors, (763), 0 states have call successors, (0), 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 10:20:22,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 396.0) internal successors, (1188), 3 states have internal predecessors, (1188), 0 states have call successors, (0), 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 10:20:22,567 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 396.0) internal successors, (1188), 3 states have internal predecessors, (1188), 0 states have call successors, (0), 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 10:20:22,569 INFO L175 Difference]: Start difference. First operand has 364 places, 385 transitions, 782 flow. Second operand 2 states and 763 transitions. [2022-10-17 10:20:22,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 362 transitions, 744 flow [2022-10-17 10:20:22,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 362 transitions, 736 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-10-17 10:20:22,591 INFO L231 Difference]: Finished difference. Result has 361 places, 358 transitions, 720 flow [2022-10-17 10:20:22,593 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=720, PETRI_PLACES=361, PETRI_TRANSITIONS=358} [2022-10-17 10:20:22,600 INFO L287 CegarLoopForPetriNet]: 364 programPoint places, -3 predicate places. [2022-10-17 10:20:22,600 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 358 transitions, 720 flow [2022-10-17 10:20:22,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 371.0) internal successors, (742), 2 states have internal predecessors, (742), 0 states have call successors, (0), 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 10:20:22,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:20:22,602 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:20:22,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:20:22,603 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 10:20:22,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:22,606 INFO L85 PathProgramCache]: Analyzing trace with hash -441871954, now seen corresponding path program 1 times [2022-10-17 10:20:22,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:22,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313742623] [2022-10-17 10:20:22,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:22,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:22,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:24,076 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 10:20:24,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:24,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313742623] [2022-10-17 10:20:24,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313742623] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:20:24,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:20:24,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-10-17 10:20:24,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341899145] [2022-10-17 10:20:24,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:20:24,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-10-17 10:20:24,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:24,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-10-17 10:20:24,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-10-17 10:20:24,091 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-10-17 10:20:24,099 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 358 transitions, 720 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 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 10:20:24,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:20:24,100 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-10-17 10:20:24,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:20:29,574 INFO L130 PetriNetUnfolder]: 4047/15008 cut-off events. [2022-10-17 10:20:29,575 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2022-10-17 10:20:29,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22854 conditions, 15008 events. 4047/15008 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 151325 event pairs, 841 based on Foata normal form. 1/14058 useless extension candidates. Maximal degree in co-relation 22851. Up to 4039 conditions per place. [2022-10-17 10:20:29,700 INFO L137 encePairwiseOnDemand]: 354/396 looper letters, 574 selfloop transitions, 75 changer transitions 33/928 dead transitions. [2022-10-17 10:20:29,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 928 transitions, 3247 flow [2022-10-17 10:20:29,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-10-17 10:20:29,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-10-17 10:20:29,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 8875 transitions. [2022-10-17 10:20:29,732 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7003630050505051 [2022-10-17 10:20:29,733 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 8875 transitions. [2022-10-17 10:20:29,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 8875 transitions. [2022-10-17 10:20:29,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:20:29,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 8875 transitions. [2022-10-17 10:20:29,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 277.34375) internal successors, (8875), 32 states have internal predecessors, (8875), 0 states have call successors, (0), 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 10:20:29,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 396.0) internal successors, (13068), 33 states have internal predecessors, (13068), 0 states have call successors, (0), 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 10:20:29,820 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 396.0) internal successors, (13068), 33 states have internal predecessors, (13068), 0 states have call successors, (0), 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 10:20:29,821 INFO L175 Difference]: Start difference. First operand has 361 places, 358 transitions, 720 flow. Second operand 32 states and 8875 transitions. [2022-10-17 10:20:29,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 928 transitions, 3247 flow [2022-10-17 10:20:29,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 928 transitions, 3247 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-10-17 10:20:29,844 INFO L231 Difference]: Finished difference. Result has 414 places, 433 transitions, 1231 flow [2022-10-17 10:20:29,845 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1231, PETRI_PLACES=414, PETRI_TRANSITIONS=433} [2022-10-17 10:20:29,846 INFO L287 CegarLoopForPetriNet]: 364 programPoint places, 50 predicate places. [2022-10-17 10:20:29,847 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 433 transitions, 1231 flow [2022-10-17 10:20:29,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 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 10:20:29,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:20:29,850 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:20:29,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:20:29,850 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 10:20:29,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:29,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1778856486, now seen corresponding path program 2 times [2022-10-17 10:20:29,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:29,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592453047] [2022-10-17 10:20:29,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:29,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:31,015 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 10:20:31,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:31,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592453047] [2022-10-17 10:20:31,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592453047] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:20:31,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:20:31,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-10-17 10:20:31,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635912920] [2022-10-17 10:20:31,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:20:31,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-10-17 10:20:31,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:31,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-10-17 10:20:31,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-10-17 10:20:31,023 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-10-17 10:20:31,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 433 transitions, 1231 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 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 10:20:31,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:20:31,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-10-17 10:20:31,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:20:37,181 INFO L130 PetriNetUnfolder]: 4738/17502 cut-off events. [2022-10-17 10:20:37,181 INFO L131 PetriNetUnfolder]: For 6448/6500 co-relation queries the response was YES. [2022-10-17 10:20:37,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33380 conditions, 17502 events. 4738/17502 cut-off events. For 6448/6500 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 182049 event pairs, 1131 based on Foata normal form. 30/16430 useless extension candidates. Maximal degree in co-relation 33350. Up to 4459 conditions per place. [2022-10-17 10:20:37,509 INFO L137 encePairwiseOnDemand]: 354/396 looper letters, 509 selfloop transitions, 164 changer transitions 17/936 dead transitions. [2022-10-17 10:20:37,509 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 936 transitions, 4435 flow [2022-10-17 10:20:37,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-10-17 10:20:37,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-10-17 10:20:37,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 11120 transitions. [2022-10-17 10:20:37,548 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6848977580684897 [2022-10-17 10:20:37,548 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 11120 transitions. [2022-10-17 10:20:37,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 11120 transitions. [2022-10-17 10:20:37,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:20:37,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 11120 transitions. [2022-10-17 10:20:37,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 271.219512195122) internal successors, (11120), 41 states have internal predecessors, (11120), 0 states have call successors, (0), 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 10:20:37,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 396.0) internal successors, (16632), 42 states have internal predecessors, (16632), 0 states have call successors, (0), 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 10:20:37,639 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 396.0) internal successors, (16632), 42 states have internal predecessors, (16632), 0 states have call successors, (0), 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 10:20:37,639 INFO L175 Difference]: Start difference. First operand has 414 places, 433 transitions, 1231 flow. Second operand 41 states and 11120 transitions. [2022-10-17 10:20:37,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 936 transitions, 4435 flow [2022-10-17 10:20:37,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 936 transitions, 4289 flow, removed 68 selfloop flow, removed 8 redundant places. [2022-10-17 10:20:37,747 INFO L231 Difference]: Finished difference. Result has 470 places, 546 transitions, 2416 flow [2022-10-17 10:20:37,748 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=1197, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=2416, PETRI_PLACES=470, PETRI_TRANSITIONS=546} [2022-10-17 10:20:37,749 INFO L287 CegarLoopForPetriNet]: 364 programPoint places, 106 predicate places. [2022-10-17 10:20:37,749 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 546 transitions, 2416 flow [2022-10-17 10:20:37,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 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 10:20:37,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:20:37,752 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:20:37,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:20:37,753 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 10:20:37,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:37,754 INFO L85 PathProgramCache]: Analyzing trace with hash -525432176, now seen corresponding path program 3 times [2022-10-17 10:20:37,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:37,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792014719] [2022-10-17 10:20:37,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:37,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:37,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:38,734 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 10:20:38,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:38,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792014719] [2022-10-17 10:20:38,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792014719] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:20:38,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:20:38,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-10-17 10:20:38,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507943366] [2022-10-17 10:20:38,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:20:38,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-10-17 10:20:38,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:38,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-10-17 10:20:38,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-10-17 10:20:38,747 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-10-17 10:20:38,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 546 transitions, 2416 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 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 10:20:38,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:20:38,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-10-17 10:20:38,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:20:45,586 INFO L130 PetriNetUnfolder]: 4893/17993 cut-off events. [2022-10-17 10:20:45,586 INFO L131 PetriNetUnfolder]: For 16546/16601 co-relation queries the response was YES. [2022-10-17 10:20:45,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39333 conditions, 17993 events. 4893/17993 cut-off events. For 16546/16601 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 187986 event pairs, 824 based on Foata normal form. 40/16945 useless extension candidates. Maximal degree in co-relation 39278. Up to 4582 conditions per place. [2022-10-17 10:20:45,984 INFO L137 encePairwiseOnDemand]: 354/396 looper letters, 724 selfloop transitions, 164 changer transitions 23/1157 dead transitions. [2022-10-17 10:20:45,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 1157 transitions, 6934 flow [2022-10-17 10:20:45,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-10-17 10:20:45,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-10-17 10:20:46,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 8924 transitions. [2022-10-17 10:20:46,011 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.704229797979798 [2022-10-17 10:20:46,011 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 8924 transitions. [2022-10-17 10:20:46,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 8924 transitions. [2022-10-17 10:20:46,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:20:46,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 8924 transitions. [2022-10-17 10:20:46,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 278.875) internal successors, (8924), 32 states have internal predecessors, (8924), 0 states have call successors, (0), 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 10:20:46,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 396.0) internal successors, (13068), 33 states have internal predecessors, (13068), 0 states have call successors, (0), 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 10:20:46,094 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 396.0) internal successors, (13068), 33 states have internal predecessors, (13068), 0 states have call successors, (0), 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 10:20:46,094 INFO L175 Difference]: Start difference. First operand has 470 places, 546 transitions, 2416 flow. Second operand 32 states and 8924 transitions. [2022-10-17 10:20:46,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 1157 transitions, 6934 flow [2022-10-17 10:20:46,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 1157 transitions, 6596 flow, removed 150 selfloop flow, removed 9 redundant places. [2022-10-17 10:20:46,300 INFO L231 Difference]: Finished difference. Result has 504 places, 588 transitions, 3142 flow [2022-10-17 10:20:46,302 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=2304, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=3142, PETRI_PLACES=504, PETRI_TRANSITIONS=588} [2022-10-17 10:20:46,303 INFO L287 CegarLoopForPetriNet]: 364 programPoint places, 140 predicate places. [2022-10-17 10:20:46,303 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 588 transitions, 3142 flow [2022-10-17 10:20:46,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 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 10:20:46,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:20:46,311 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:20:46,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:20:46,311 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 10:20:46,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:20:46,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1779878828, now seen corresponding path program 4 times [2022-10-17 10:20:46,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:20:46,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833797932] [2022-10-17 10:20:46,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:20:46,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:20:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:20:47,166 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 10:20:47,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:20:47,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833797932] [2022-10-17 10:20:47,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833797932] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:20:47,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:20:47,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-10-17 10:20:47,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145010498] [2022-10-17 10:20:47,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:20:47,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-10-17 10:20:47,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:20:47,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-10-17 10:20:47,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-10-17 10:20:47,174 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-10-17 10:20:47,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 588 transitions, 3142 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 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 10:20:47,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:20:47,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-10-17 10:20:47,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand