./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/03_incdec.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc11671-84cc-41bd-bc25-7379f44931cd/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc11671-84cc-41bd-bc25-7379f44931cd/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc11671-84cc-41bd-bc25-7379f44931cd/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc11671-84cc-41bd-bc25-7379f44931cd/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/03_incdec.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc11671-84cc-41bd-bc25-7379f44931cd/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc11671-84cc-41bd-bc25-7379f44931cd/bin/uautomizer-TMbwUNV5ro --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 c1c717c54832d7b18d55a1459c6f740661389c67176a032001ce64e3c282b955 --- 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-8393723 [2022-11-18 20:40:39,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:40:39,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:40:39,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:40:39,552 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:40:39,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:40:39,556 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:40:39,560 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:40:39,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:40:39,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:40:39,569 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:40:39,571 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:40:39,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:40:39,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:40:39,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:40:39,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:40:39,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:40:39,587 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:40:39,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:40:39,591 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:40:39,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:40:39,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:40:39,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:40:39,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:40:39,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:40:39,610 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:40:39,611 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:40:39,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:40:39,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:40:39,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:40:39,615 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:40:39,616 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:40:39,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:40:39,619 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:40:39,621 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:40:39,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:40:39,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:40:39,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:40:39,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:40:39,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:40:39,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:40:39,626 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc11671-84cc-41bd-bc25-7379f44931cd/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:40:39,662 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:40:39,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:40:39,667 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:40:39,668 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:40:39,668 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:40:39,669 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:40:39,669 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:40:39,669 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:40:39,670 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:40:39,670 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:40:39,671 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:40:39,671 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:40:39,671 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:40:39,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:40:39,672 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:40:39,672 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:40:39,672 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:40:39,672 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:40:39,673 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:40:39,673 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:40:39,673 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:40:39,673 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:40:39,674 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:40:39,674 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:40:39,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:40:39,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:40:39,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:40:39,676 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:40:39,676 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:40:39,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:40:39,677 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:40:39,677 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:40:39,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:40:39,677 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_1bc11671-84cc-41bd-bc25-7379f44931cd/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc11671-84cc-41bd-bc25-7379f44931cd/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1c717c54832d7b18d55a1459c6f740661389c67176a032001ce64e3c282b955 [2022-11-18 20:40:39,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:40:40,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:40:40,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:40:40,010 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:40:40,010 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:40:40,012 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc11671-84cc-41bd-bc25-7379f44931cd/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread-ext/03_incdec.i [2022-11-18 20:40:40,093 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc11671-84cc-41bd-bc25-7379f44931cd/bin/uautomizer-TMbwUNV5ro/data/31017c776/fb79d9bf47b6407b9e8808be4736a9ca/FLAGd7bf4c3bd [2022-11-18 20:40:40,705 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:40:40,710 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc11671-84cc-41bd-bc25-7379f44931cd/sv-benchmarks/c/pthread-ext/03_incdec.i [2022-11-18 20:40:40,724 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc11671-84cc-41bd-bc25-7379f44931cd/bin/uautomizer-TMbwUNV5ro/data/31017c776/fb79d9bf47b6407b9e8808be4736a9ca/FLAGd7bf4c3bd [2022-11-18 20:40:40,967 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc11671-84cc-41bd-bc25-7379f44931cd/bin/uautomizer-TMbwUNV5ro/data/31017c776/fb79d9bf47b6407b9e8808be4736a9ca [2022-11-18 20:40:40,970 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:40:40,974 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:40:40,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:40:40,978 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:40:40,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:40:40,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:40:40" (1/1) ... [2022-11-18 20:40:40,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ec70cdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:40, skipping insertion in model container [2022-11-18 20:40:40,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:40:40" (1/1) ... [2022-11-18 20:40:40,993 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:40:41,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:40:41,411 WARN L234 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_1bc11671-84cc-41bd-bc25-7379f44931cd/sv-benchmarks/c/pthread-ext/03_incdec.i[30534,30547] [2022-11-18 20:40:41,417 WARN L234 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_1bc11671-84cc-41bd-bc25-7379f44931cd/sv-benchmarks/c/pthread-ext/03_incdec.i[30928,30941] [2022-11-18 20:40:41,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:40:41,431 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:40:41,480 WARN L234 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_1bc11671-84cc-41bd-bc25-7379f44931cd/sv-benchmarks/c/pthread-ext/03_incdec.i[30534,30547] [2022-11-18 20:40:41,483 WARN L234 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_1bc11671-84cc-41bd-bc25-7379f44931cd/sv-benchmarks/c/pthread-ext/03_incdec.i[30928,30941] [2022-11-18 20:40:41,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:40:41,521 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:40:41,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:41 WrapperNode [2022-11-18 20:40:41,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:40:41,524 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:40:41,524 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:40:41,524 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:40:41,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:41" (1/1) ... [2022-11-18 20:40:41,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:41" (1/1) ... [2022-11-18 20:40:41,601 INFO L138 Inliner]: procedures = 172, calls = 24, calls flagged for inlining = 16, calls inlined = 24, statements flattened = 133 [2022-11-18 20:40:41,602 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:40:41,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:40:41,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:40:41,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:40:41,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:41" (1/1) ... [2022-11-18 20:40:41,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:41" (1/1) ... [2022-11-18 20:40:41,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:41" (1/1) ... [2022-11-18 20:40:41,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:41" (1/1) ... [2022-11-18 20:40:41,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:41" (1/1) ... [2022-11-18 20:40:41,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:41" (1/1) ... [2022-11-18 20:40:41,648 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:41" (1/1) ... [2022-11-18 20:40:41,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:41" (1/1) ... [2022-11-18 20:40:41,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:40:41,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:40:41,659 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:40:41,659 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:40:41,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:41" (1/1) ... [2022-11-18 20:40:41,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:40:41,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc11671-84cc-41bd-bc25-7379f44931cd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:40:41,700 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc11671-84cc-41bd-bc25-7379f44931cd/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:40:41,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bc11671-84cc-41bd-bc25-7379f44931cd/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:40:41,749 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-18 20:40:41,749 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-18 20:40:41,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:40:41,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:40:41,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:40:41,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:40:41,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:40:41,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:40:41,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:40:41,753 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:40:41,900 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:40:41,917 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:40:42,306 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:40:42,430 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:40:42,430 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 20:40:42,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:40:42 BoogieIcfgContainer [2022-11-18 20:40:42,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:40:42,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:40:42,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:40:42,448 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:40:42,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:40:40" (1/3) ... [2022-11-18 20:40:42,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11a7ed63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:40:42, skipping insertion in model container [2022-11-18 20:40:42,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:41" (2/3) ... [2022-11-18 20:40:42,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11a7ed63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:40:42, skipping insertion in model container [2022-11-18 20:40:42,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:40:42" (3/3) ... [2022-11-18 20:40:42,451 INFO L112 eAbstractionObserver]: Analyzing ICFG 03_incdec.i [2022-11-18 20:40:42,460 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:40:42,472 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:40:42,472 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-18 20:40:42,473 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:40:42,565 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 20:40:42,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 88 transitions, 181 flow [2022-11-18 20:40:42,673 INFO L130 PetriNetUnfolder]: 7/99 cut-off events. [2022-11-18 20:40:42,673 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:40:42,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 99 events. 7/99 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 192 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 69. Up to 4 conditions per place. [2022-11-18 20:40:42,680 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 88 transitions, 181 flow [2022-11-18 20:40:42,685 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 88 transitions, 181 flow [2022-11-18 20:40:42,700 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:40:42,710 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;@3156d022, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:40:42,710 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-18 20:40:42,728 INFO L130 PetriNetUnfolder]: 2/50 cut-off events. [2022-11-18 20:40:42,728 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:40:42,728 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:42,729 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:42,730 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:40:42,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:42,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1963736281, now seen corresponding path program 1 times [2022-11-18 20:40:42,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:42,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838777025] [2022-11-18 20:40:42,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:42,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:40:42,884 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:40:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:40:42,952 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:40:42,954 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:40:42,956 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-11-18 20:40:42,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-11-18 20:40:42,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-11-18 20:40:42,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-11-18 20:40:42,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-11-18 20:40:42,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:40:42,962 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-18 20:40:42,970 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:40:42,970 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 20:40:43,073 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 20:40:43,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 139 places, 145 transitions, 302 flow [2022-11-18 20:40:43,128 INFO L130 PetriNetUnfolder]: 13/169 cut-off events. [2022-11-18 20:40:43,128 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 20:40:43,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 169 events. 13/169 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 526 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 125. Up to 6 conditions per place. [2022-11-18 20:40:43,131 INFO L82 GeneralOperation]: Start removeDead. Operand has 139 places, 145 transitions, 302 flow [2022-11-18 20:40:43,133 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 139 places, 145 transitions, 302 flow [2022-11-18 20:40:43,134 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:40:43,136 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;@3156d022, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:40:43,136 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-18 20:40:43,153 INFO L130 PetriNetUnfolder]: 3/96 cut-off events. [2022-11-18 20:40:43,153 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 20:40:43,153 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:43,154 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:43,154 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 20:40:43,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:43,155 INFO L85 PathProgramCache]: Analyzing trace with hash -452468264, now seen corresponding path program 1 times [2022-11-18 20:40:43,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:43,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610888313] [2022-11-18 20:40:43,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:43,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:40:43,206 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:40:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:40:43,246 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:40:43,248 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:40:43,249 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2022-11-18 20:40:43,249 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-11-18 20:40:43,249 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2022-11-18 20:40:43,250 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2022-11-18 20:40:43,250 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2022-11-18 20:40:43,251 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-11-18 20:40:43,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-11-18 20:40:43,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:40:43,252 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-18 20:40:43,253 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:40:43,254 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-18 20:40:43,317 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 20:40:43,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 202 transitions, 425 flow [2022-11-18 20:40:43,391 INFO L130 PetriNetUnfolder]: 19/239 cut-off events. [2022-11-18 20:40:43,391 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-18 20:40:43,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 239 events. 19/239 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 867 event pairs, 0 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 181. Up to 8 conditions per place. [2022-11-18 20:40:43,395 INFO L82 GeneralOperation]: Start removeDead. Operand has 193 places, 202 transitions, 425 flow [2022-11-18 20:40:43,404 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 193 places, 202 transitions, 425 flow [2022-11-18 20:40:43,407 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:40:43,412 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;@3156d022, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:40:43,412 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-18 20:40:43,432 INFO L130 PetriNetUnfolder]: 5/126 cut-off events. [2022-11-18 20:40:43,432 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 20:40:43,432 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:43,432 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:43,433 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-11-18 20:40:43,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:43,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1881304884, now seen corresponding path program 1 times [2022-11-18 20:40:43,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:43,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449651770] [2022-11-18 20:40:43,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:43,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:43,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:43,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:43,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:43,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449651770] [2022-11-18 20:40:43,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449651770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:43,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:43,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:40:43,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251245536] [2022-11-18 20:40:43,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:43,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:40:43,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:43,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:40:43,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:40:43,888 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 202 [2022-11-18 20:40:43,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 202 transitions, 425 flow. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:43,892 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:43,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 202 [2022-11-18 20:40:43,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:49,533 INFO L130 PetriNetUnfolder]: 14902/30981 cut-off events. [2022-11-18 20:40:49,533 INFO L131 PetriNetUnfolder]: For 1825/1825 co-relation queries the response was YES. [2022-11-18 20:40:49,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54286 conditions, 30981 events. 14902/30981 cut-off events. For 1825/1825 co-relation queries the response was YES. Maximal size of possible extension queue 1439. Compared 322197 event pairs, 9166 based on Foata normal form. 10248/36983 useless extension candidates. Maximal degree in co-relation 10902. Up to 21023 conditions per place. [2022-11-18 20:40:49,899 INFO L137 encePairwiseOnDemand]: 184/202 looper letters, 89 selfloop transitions, 4 changer transitions 0/206 dead transitions. [2022-11-18 20:40:49,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 206 transitions, 631 flow [2022-11-18 20:40:49,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:40:49,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:40:49,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 463 transitions. [2022-11-18 20:40:49,921 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.764026402640264 [2022-11-18 20:40:49,922 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 463 transitions. [2022-11-18 20:40:49,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 463 transitions. [2022-11-18 20:40:49,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:49,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 463 transitions. [2022-11-18 20:40:49,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:49,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:49,943 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:49,945 INFO L175 Difference]: Start difference. First operand has 193 places, 202 transitions, 425 flow. Second operand 3 states and 463 transitions. [2022-11-18 20:40:49,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 206 transitions, 631 flow [2022-11-18 20:40:49,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 206 transitions, 623 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-11-18 20:40:49,961 INFO L231 Difference]: Finished difference. Result has 184 places, 186 transitions, 417 flow [2022-11-18 20:40:49,963 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=417, PETRI_PLACES=184, PETRI_TRANSITIONS=186} [2022-11-18 20:40:49,969 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, -9 predicate places. [2022-11-18 20:40:49,969 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 186 transitions, 417 flow [2022-11-18 20:40:49,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:49,970 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:49,970 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:49,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:40:49,971 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-11-18 20:40:49,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:49,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1564665707, now seen corresponding path program 1 times [2022-11-18 20:40:49,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:49,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586666007] [2022-11-18 20:40:49,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:49,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:50,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:50,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:50,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:50,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586666007] [2022-11-18 20:40:50,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586666007] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:50,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:50,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:40:50,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297452396] [2022-11-18 20:40:50,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:50,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:40:50,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:50,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:40:50,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:40:50,228 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 202 [2022-11-18 20:40:50,232 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 186 transitions, 417 flow. Second operand has 5 states, 5 states have (on average 117.2) internal successors, (586), 5 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:50,233 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:50,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 202 [2022-11-18 20:40:50,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:56,243 INFO L130 PetriNetUnfolder]: 22290/47811 cut-off events. [2022-11-18 20:40:56,244 INFO L131 PetriNetUnfolder]: For 4090/4090 co-relation queries the response was YES. [2022-11-18 20:40:56,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86423 conditions, 47811 events. 22290/47811 cut-off events. For 4090/4090 co-relation queries the response was YES. Maximal size of possible extension queue 2007. Compared 540470 event pairs, 9635 based on Foata normal form. 210/44190 useless extension candidates. Maximal degree in co-relation 63696. Up to 14341 conditions per place. [2022-11-18 20:40:56,672 INFO L137 encePairwiseOnDemand]: 191/202 looper letters, 200 selfloop transitions, 14 changer transitions 0/324 dead transitions. [2022-11-18 20:40:56,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 324 transitions, 1183 flow [2022-11-18 20:40:56,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:40:56,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:40:56,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 907 transitions. [2022-11-18 20:40:56,675 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7483498349834984 [2022-11-18 20:40:56,676 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 907 transitions. [2022-11-18 20:40:56,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 907 transitions. [2022-11-18 20:40:56,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:56,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 907 transitions. [2022-11-18 20:40:56,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 151.16666666666666) internal successors, (907), 6 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:56,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 202.0) internal successors, (1414), 7 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:56,683 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 202.0) internal successors, (1414), 7 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:56,683 INFO L175 Difference]: Start difference. First operand has 184 places, 186 transitions, 417 flow. Second operand 6 states and 907 transitions. [2022-11-18 20:40:56,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 324 transitions, 1183 flow [2022-11-18 20:40:56,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 324 transitions, 1177 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:40:56,695 INFO L231 Difference]: Finished difference. Result has 190 places, 195 transitions, 502 flow [2022-11-18 20:40:56,696 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=502, PETRI_PLACES=190, PETRI_TRANSITIONS=195} [2022-11-18 20:40:56,697 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, -3 predicate places. [2022-11-18 20:40:56,698 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 195 transitions, 502 flow [2022-11-18 20:40:56,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.2) internal successors, (586), 5 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:56,698 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:56,699 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:56,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:40:56,699 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-11-18 20:40:56,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:56,700 INFO L85 PathProgramCache]: Analyzing trace with hash -892006303, now seen corresponding path program 1 times [2022-11-18 20:40:56,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:56,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129014156] [2022-11-18 20:40:56,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:56,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:56,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:40:56,729 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:40:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:40:56,760 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:40:56,761 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:40:56,761 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2022-11-18 20:40:56,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2022-11-18 20:40:56,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2022-11-18 20:40:56,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 9 remaining) [2022-11-18 20:40:56,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (4 of 9 remaining) [2022-11-18 20:40:56,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 9 remaining) [2022-11-18 20:40:56,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 9 remaining) [2022-11-18 20:40:56,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2022-11-18 20:40:56,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2022-11-18 20:40:56,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:40:56,768 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-18 20:40:56,769 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:40:56,769 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-18 20:40:56,836 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 20:40:56,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 247 places, 259 transitions, 550 flow [2022-11-18 20:40:56,893 INFO L130 PetriNetUnfolder]: 25/309 cut-off events. [2022-11-18 20:40:56,894 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-18 20:40:56,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 309 events. 25/309 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1232 event pairs, 0 based on Foata normal form. 0/271 useless extension candidates. Maximal degree in co-relation 247. Up to 10 conditions per place. [2022-11-18 20:40:56,899 INFO L82 GeneralOperation]: Start removeDead. Operand has 247 places, 259 transitions, 550 flow [2022-11-18 20:40:56,907 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 247 places, 259 transitions, 550 flow [2022-11-18 20:40:56,908 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:40:56,910 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;@3156d022, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:40:56,911 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-18 20:40:56,922 INFO L130 PetriNetUnfolder]: 5/126 cut-off events. [2022-11-18 20:40:56,922 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 20:40:56,922 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:56,922 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:56,923 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-18 20:40:56,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:56,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1699692579, now seen corresponding path program 1 times [2022-11-18 20:40:56,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:56,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694856821] [2022-11-18 20:40:56,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:56,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:56,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:57,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:57,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:57,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694856821] [2022-11-18 20:40:57,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694856821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:57,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:57,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:40:57,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894014706] [2022-11-18 20:40:57,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:57,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:40:57,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:57,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:40:57,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:40:57,161 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 259 [2022-11-18 20:40:57,162 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 259 transitions, 550 flow. Second operand has 5 states, 5 states have (on average 147.2) internal successors, (736), 5 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:57,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:57,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 259 [2022-11-18 20:40:57,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand