./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-deagle/reorder_c11_good-20.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b88b9-a53e-4fdf-8aa5-b2db80516ef1/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b88b9-a53e-4fdf-8aa5-b2db80516ef1/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_8a2b88b9-a53e-4fdf-8aa5-b2db80516ef1/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b88b9-a53e-4fdf-8aa5-b2db80516ef1/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/reorder_c11_good-20.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b88b9-a53e-4fdf-8aa5-b2db80516ef1/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_8a2b88b9-a53e-4fdf-8aa5-b2db80516ef1/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 2f66f1b2f8bc96c1cbd24e122a1b904932cb7f0e98e43f950b8a0288b2af2871 --- 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 10:38:04,434 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:38:04,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:38:04,502 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:38:04,503 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:38:04,508 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:38:04,511 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:38:04,515 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:38:04,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:38:04,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:38:04,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:38:04,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:38:04,534 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:38:04,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:38:04,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:38:04,541 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:38:04,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:38:04,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:38:04,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:38:04,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:38:04,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:38:04,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:38:04,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:38:04,565 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:38:04,570 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:38:04,571 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:38:04,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:38:04,574 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:38:04,574 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:38:04,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:38:04,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:38:04,577 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:38:04,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:38:04,581 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:38:04,584 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:38:04,585 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:38:04,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:38:04,586 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:38:04,586 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:38:04,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:38:04,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:38:04,589 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b88b9-a53e-4fdf-8aa5-b2db80516ef1/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:38:04,638 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:38:04,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:38:04,639 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:38:04,639 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:38:04,640 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:38:04,641 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:38:04,641 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:38:04,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:38:04,642 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:38:04,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:38:04,643 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:38:04,643 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:38:04,644 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:38:04,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:38:04,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:38:04,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:38:04,644 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:38:04,645 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:38:04,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:38:04,645 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:38:04,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:38:04,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:38:04,646 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:38:04,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:38:04,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:38:04,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:38:04,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:38:04,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:38:04,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:38:04,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:38:04,647 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:38:04,647 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:38:04,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:38:04,648 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_8a2b88b9-a53e-4fdf-8aa5-b2db80516ef1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b88b9-a53e-4fdf-8aa5-b2db80516ef1/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f66f1b2f8bc96c1cbd24e122a1b904932cb7f0e98e43f950b8a0288b2af2871 [2022-10-17 10:38:04,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:38:04,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:38:04,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:38:04,999 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:38:05,000 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:38:05,001 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b88b9-a53e-4fdf-8aa5-b2db80516ef1/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/pthread-deagle/reorder_c11_good-20.i [2022-10-17 10:38:05,069 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b88b9-a53e-4fdf-8aa5-b2db80516ef1/bin/uautomizer-J5u9QxTXDZ/data/0927e304e/beabc86f1a944fea99b3a9bc22044377/FLAGe87b37c92 [2022-10-17 10:38:05,602 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:38:05,602 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b88b9-a53e-4fdf-8aa5-b2db80516ef1/sv-benchmarks/c/pthread-deagle/reorder_c11_good-20.i [2022-10-17 10:38:05,614 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b88b9-a53e-4fdf-8aa5-b2db80516ef1/bin/uautomizer-J5u9QxTXDZ/data/0927e304e/beabc86f1a944fea99b3a9bc22044377/FLAGe87b37c92 [2022-10-17 10:38:05,897 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b88b9-a53e-4fdf-8aa5-b2db80516ef1/bin/uautomizer-J5u9QxTXDZ/data/0927e304e/beabc86f1a944fea99b3a9bc22044377 [2022-10-17 10:38:05,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:38:05,901 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:38:05,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:38:05,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:38:05,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:38:05,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:38:05" (1/1) ... [2022-10-17 10:38:05,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48299d24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:05, skipping insertion in model container [2022-10-17 10:38:05,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:38:05" (1/1) ... [2022-10-17 10:38:05,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:38:05,956 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:38:06,414 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_8a2b88b9-a53e-4fdf-8aa5-b2db80516ef1/sv-benchmarks/c/pthread-deagle/reorder_c11_good-20.i[30195,30208] [2022-10-17 10:38:06,432 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:38:06,441 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:38:06,498 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_8a2b88b9-a53e-4fdf-8aa5-b2db80516ef1/sv-benchmarks/c/pthread-deagle/reorder_c11_good-20.i[30195,30208] [2022-10-17 10:38:06,504 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:38:06,545 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:38:06,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:06 WrapperNode [2022-10-17 10:38:06,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:38:06,547 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:38:06,548 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:38:06,548 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:38:06,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:06" (1/1) ... [2022-10-17 10:38:06,591 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:06" (1/1) ... [2022-10-17 10:38:06,622 INFO L138 Inliner]: procedures = 163, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 71 [2022-10-17 10:38:06,623 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:38:06,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:38:06,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:38:06,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:38:06,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:06" (1/1) ... [2022-10-17 10:38:06,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:06" (1/1) ... [2022-10-17 10:38:06,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:06" (1/1) ... [2022-10-17 10:38:06,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:06" (1/1) ... [2022-10-17 10:38:06,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:06" (1/1) ... [2022-10-17 10:38:06,665 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:06" (1/1) ... [2022-10-17 10:38:06,667 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:06" (1/1) ... [2022-10-17 10:38:06,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:06" (1/1) ... [2022-10-17 10:38:06,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:38:06,677 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:38:06,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:38:06,678 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:38:06,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:06" (1/1) ... [2022-10-17 10:38:06,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:38:06,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b88b9-a53e-4fdf-8aa5-b2db80516ef1/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:38:06,719 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b88b9-a53e-4fdf-8aa5-b2db80516ef1/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:38:06,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2b88b9-a53e-4fdf-8aa5-b2db80516ef1/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:38:06,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:38:06,773 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2022-10-17 10:38:06,773 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2022-10-17 10:38:06,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:38:06,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 10:38:06,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:38:06,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:38:06,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:38:06,775 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2022-10-17 10:38:06,775 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2022-10-17 10:38:06,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:38:06,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 10:38:06,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:38:06,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:38:06,777 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 10:38:06,966 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:38:06,968 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:38:07,219 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:38:07,228 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:38:07,228 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-10-17 10:38:07,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:38:07 BoogieIcfgContainer [2022-10-17 10:38:07,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:38:07,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:38:07,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:38:07,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:38:07,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:38:05" (1/3) ... [2022-10-17 10:38:07,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@234ea1f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:38:07, skipping insertion in model container [2022-10-17 10:38:07,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:06" (2/3) ... [2022-10-17 10:38:07,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@234ea1f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:38:07, skipping insertion in model container [2022-10-17 10:38:07,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:38:07" (3/3) ... [2022-10-17 10:38:07,243 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_c11_good-20.i [2022-10-17 10:38:07,253 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:38:07,269 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:38:07,269 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:38:07,269 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:38:07,329 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-10-17 10:38:07,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 91 transitions, 204 flow [2022-10-17 10:38:07,471 INFO L130 PetriNetUnfolder]: 24/202 cut-off events. [2022-10-17 10:38:07,471 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-10-17 10:38:07,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 202 events. 24/202 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 634 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 105. Up to 8 conditions per place. [2022-10-17 10:38:07,476 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 91 transitions, 204 flow [2022-10-17 10:38:07,482 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 89 transitions, 194 flow [2022-10-17 10:38:07,515 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:38:07,523 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;@6f4574ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:38:07,523 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-10-17 10:38:07,541 INFO L130 PetriNetUnfolder]: 5/66 cut-off events. [2022-10-17 10:38:07,542 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:38:07,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:38:07,543 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] [2022-10-17 10:38:07,543 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:38:07,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:07,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1384871672, now seen corresponding path program 1 times [2022-10-17 10:38:07,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:38:07,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691498318] [2022-10-17 10:38:07,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:07,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:38:07,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:07,773 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 10:38:07,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:38:07,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691498318] [2022-10-17 10:38:07,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691498318] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:38:07,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:38:07,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:38:07,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850456376] [2022-10-17 10:38:07,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:38:07,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:38:07,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:38:07,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:38:07,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:38:07,825 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 91 [2022-10-17 10:38:07,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 89 transitions, 194 flow. Second operand has 2 states, 2 states have (on average 79.5) internal successors, (159), 2 states have internal predecessors, (159), 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 10:38:07,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:38:07,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 91 [2022-10-17 10:38:07,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:38:07,958 INFO L130 PetriNetUnfolder]: 4/168 cut-off events. [2022-10-17 10:38:07,959 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-10-17 10:38:07,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 168 events. 4/168 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 526 event pairs, 0 based on Foata normal form. 18/172 useless extension candidates. Maximal degree in co-relation 104. Up to 8 conditions per place. [2022-10-17 10:38:07,961 INFO L137 encePairwiseOnDemand]: 86/91 looper letters, 2 selfloop transitions, 0 changer transitions 26/81 dead transitions. [2022-10-17 10:38:07,962 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 81 transitions, 186 flow [2022-10-17 10:38:07,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:38:07,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-10-17 10:38:07,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 165 transitions. [2022-10-17 10:38:07,978 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9065934065934066 [2022-10-17 10:38:07,979 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 165 transitions. [2022-10-17 10:38:07,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 165 transitions. [2022-10-17 10:38:07,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:38:07,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 165 transitions. [2022-10-17 10:38:07,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 82.5) internal successors, (165), 2 states have internal predecessors, (165), 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 10:38:07,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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 10:38:07,995 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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 10:38:07,997 INFO L175 Difference]: Start difference. First operand has 87 places, 89 transitions, 194 flow. Second operand 2 states and 165 transitions. [2022-10-17 10:38:07,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 81 transitions, 186 flow [2022-10-17 10:38:08,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 81 transitions, 186 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-10-17 10:38:08,007 INFO L231 Difference]: Finished difference. Result has 85 places, 55 transitions, 120 flow [2022-10-17 10:38:08,009 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=120, PETRI_PLACES=85, PETRI_TRANSITIONS=55} [2022-10-17 10:38:08,014 INFO L287 CegarLoopForPetriNet]: 87 programPoint places, -2 predicate places. [2022-10-17 10:38:08,015 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 55 transitions, 120 flow [2022-10-17 10:38:08,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 79.5) internal successors, (159), 2 states have internal predecessors, (159), 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 10:38:08,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:38:08,016 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:38:08,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:38:08,017 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:38:08,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:08,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1644059886, now seen corresponding path program 1 times [2022-10-17 10:38:08,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:38:08,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356588684] [2022-10-17 10:38:08,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:08,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:38:08,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:38:08,108 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:38:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:38:08,204 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:38:08,205 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 10:38:08,207 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-10-17 10:38:08,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-10-17 10:38:08,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-10-17 10:38:08,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-10-17 10:38:08,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:38:08,215 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-10-17 10:38:08,219 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-17 10:38:08,220 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-10-17 10:38:08,289 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-10-17 10:38:08,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 110 transitions, 268 flow [2022-10-17 10:38:08,417 INFO L130 PetriNetUnfolder]: 107/656 cut-off events. [2022-10-17 10:38:08,418 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-10-17 10:38:08,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 753 conditions, 656 events. 107/656 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3161 event pairs, 2 based on Foata normal form. 0/556 useless extension candidates. Maximal degree in co-relation 395. Up to 32 conditions per place. [2022-10-17 10:38:08,425 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 110 transitions, 268 flow [2022-10-17 10:38:08,433 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 110 transitions, 268 flow [2022-10-17 10:38:08,435 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:38:08,438 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;@6f4574ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:38:08,438 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-10-17 10:38:08,447 INFO L130 PetriNetUnfolder]: 5/66 cut-off events. [2022-10-17 10:38:08,447 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:38:08,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:38:08,447 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] [2022-10-17 10:38:08,448 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-10-17 10:38:08,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:08,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1058484398, now seen corresponding path program 1 times [2022-10-17 10:38:08,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:38:08,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906633789] [2022-10-17 10:38:08,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:08,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:38:08,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:08,608 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 10:38:08,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:38:08,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906633789] [2022-10-17 10:38:08,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906633789] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:38:08,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:38:08,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:38:08,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767020313] [2022-10-17 10:38:08,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:38:08,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:38:08,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:38:08,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:38:08,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:38:08,620 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 110 [2022-10-17 10:38:08,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 110 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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 10:38:08,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:38:08,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 110 [2022-10-17 10:38:08,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:38:08,905 INFO L130 PetriNetUnfolder]: 58/567 cut-off events. [2022-10-17 10:38:08,905 INFO L131 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2022-10-17 10:38:08,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1019 conditions, 567 events. 58/567 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2863 event pairs, 0 based on Foata normal form. 244/779 useless extension candidates. Maximal degree in co-relation 497. Up to 207 conditions per place. [2022-10-17 10:38:08,909 INFO L137 encePairwiseOnDemand]: 92/110 looper letters, 20 selfloop transitions, 4 changer transitions 48/122 dead transitions. [2022-10-17 10:38:08,909 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 122 transitions, 438 flow [2022-10-17 10:38:08,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:38:08,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:38:08,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 266 transitions. [2022-10-17 10:38:08,913 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.806060606060606 [2022-10-17 10:38:08,913 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 266 transitions. [2022-10-17 10:38:08,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 266 transitions. [2022-10-17 10:38:08,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:38:08,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 266 transitions. [2022-10-17 10:38:08,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 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 10:38:08,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 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 10:38:08,919 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 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 10:38:08,919 INFO L175 Difference]: Start difference. First operand has 105 places, 110 transitions, 268 flow. Second operand 3 states and 266 transitions. [2022-10-17 10:38:08,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 122 transitions, 438 flow [2022-10-17 10:38:08,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 122 transitions, 438 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-10-17 10:38:08,926 INFO L231 Difference]: Finished difference. Result has 102 places, 68 transitions, 178 flow [2022-10-17 10:38:08,926 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=102, PETRI_TRANSITIONS=68} [2022-10-17 10:38:08,927 INFO L287 CegarLoopForPetriNet]: 105 programPoint places, -3 predicate places. [2022-10-17 10:38:08,928 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 68 transitions, 178 flow [2022-10-17 10:38:08,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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 10:38:08,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:38:08,929 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 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, 1, 1, 1, 1] [2022-10-17 10:38:08,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:38:08,929 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-10-17 10:38:08,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:08,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1114336808, now seen corresponding path program 1 times [2022-10-17 10:38:08,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:38:08,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60529808] [2022-10-17 10:38:08,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:08,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:38:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:38:08,977 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:38:08,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:38:09,004 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:38:09,005 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 10:38:09,005 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-10-17 10:38:09,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-10-17 10:38:09,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-10-17 10:38:09,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-10-17 10:38:09,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-10-17 10:38:09,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:38:09,007 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-10-17 10:38:09,008 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-17 10:38:09,008 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-10-17 10:38:09,050 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-10-17 10:38:09,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 129 transitions, 336 flow [2022-10-17 10:38:09,468 INFO L130 PetriNetUnfolder]: 496/2280 cut-off events. [2022-10-17 10:38:09,468 INFO L131 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2022-10-17 10:38:09,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2731 conditions, 2280 events. 496/2280 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 15213 event pairs, 64 based on Foata normal form. 0/1960 useless extension candidates. Maximal degree in co-relation 1399. Up to 192 conditions per place. [2022-10-17 10:38:09,491 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 129 transitions, 336 flow [2022-10-17 10:38:09,509 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 129 transitions, 336 flow [2022-10-17 10:38:09,511 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:38:09,513 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;@6f4574ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:38:09,514 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-10-17 10:38:09,532 INFO L130 PetriNetUnfolder]: 5/67 cut-off events. [2022-10-17 10:38:09,533 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:38:09,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:38:09,533 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] [2022-10-17 10:38:09,534 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-10-17 10:38:09,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:09,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1403195866, now seen corresponding path program 1 times [2022-10-17 10:38:09,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:38:09,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085400355] [2022-10-17 10:38:09,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:09,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:38:09,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:09,602 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 10:38:09,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:38:09,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085400355] [2022-10-17 10:38:09,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085400355] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:38:09,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:38:09,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:38:09,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224010360] [2022-10-17 10:38:09,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:38:09,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:38:09,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:38:09,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:38:09,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:38:09,608 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 129 [2022-10-17 10:38:09,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 129 transitions, 336 flow. Second operand has 2 states, 2 states have (on average 99.5) internal successors, (199), 2 states have internal predecessors, (199), 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 10:38:09,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:38:09,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 129 [2022-10-17 10:38:09,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:38:10,017 INFO L130 PetriNetUnfolder]: 336/2084 cut-off events. [2022-10-17 10:38:10,018 INFO L131 PetriNetUnfolder]: For 1217/1217 co-relation queries the response was YES. [2022-10-17 10:38:10,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2935 conditions, 2084 events. 336/2084 cut-off events. For 1217/1217 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 14506 event pairs, 32 based on Foata normal form. 358/2294 useless extension candidates. Maximal degree in co-relation 1455. Up to 400 conditions per place. [2022-10-17 10:38:10,029 INFO L137 encePairwiseOnDemand]: 122/129 looper letters, 6 selfloop transitions, 0 changer transitions 36/113 dead transitions. [2022-10-17 10:38:10,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 113 transitions, 340 flow [2022-10-17 10:38:10,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:38:10,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-10-17 10:38:10,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 221 transitions. [2022-10-17 10:38:10,032 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8565891472868217 [2022-10-17 10:38:10,032 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 221 transitions. [2022-10-17 10:38:10,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 221 transitions. [2022-10-17 10:38:10,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:38:10,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 221 transitions. [2022-10-17 10:38:10,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 110.5) internal successors, (221), 2 states have internal predecessors, (221), 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 10:38:10,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 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 10:38:10,036 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 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 10:38:10,036 INFO L175 Difference]: Start difference. First operand has 123 places, 129 transitions, 336 flow. Second operand 2 states and 221 transitions. [2022-10-17 10:38:10,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 113 transitions, 340 flow [2022-10-17 10:38:10,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 113 transitions, 340 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-10-17 10:38:10,042 INFO L231 Difference]: Finished difference. Result has 115 places, 77 transitions, 196 flow [2022-10-17 10:38:10,044 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=196, PETRI_PLACES=115, PETRI_TRANSITIONS=77} [2022-10-17 10:38:10,046 INFO L287 CegarLoopForPetriNet]: 123 programPoint places, -8 predicate places. [2022-10-17 10:38:10,047 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 77 transitions, 196 flow [2022-10-17 10:38:10,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 99.5) internal successors, (199), 2 states have internal predecessors, (199), 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 10:38:10,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:38:10,047 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:38:10,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:38:10,048 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-10-17 10:38:10,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:10,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1345279344, now seen corresponding path program 1 times [2022-10-17 10:38:10,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:38:10,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082529982] [2022-10-17 10:38:10,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:10,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:38:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:38:10,095 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:38:10,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:38:10,147 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:38:10,147 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 10:38:10,147 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2022-10-17 10:38:10,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-10-17 10:38:10,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-10-17 10:38:10,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-10-17 10:38:10,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-10-17 10:38:10,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-10-17 10:38:10,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:38:10,149 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-10-17 10:38:10,150 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-17 10:38:10,150 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-10-17 10:38:10,201 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2022-10-17 10:38:10,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 148 transitions, 408 flow [2022-10-17 10:38:11,992 INFO L130 PetriNetUnfolder]: 2379/8746 cut-off events. [2022-10-17 10:38:11,992 INFO L131 PetriNetUnfolder]: For 2144/2144 co-relation queries the response was YES. [2022-10-17 10:38:12,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10911 conditions, 8746 events. 2379/8746 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 75603 event pairs, 626 based on Foata normal form. 0/7622 useless extension candidates. Maximal degree in co-relation 5388. Up to 1024 conditions per place. [2022-10-17 10:38:12,145 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 148 transitions, 408 flow [2022-10-17 10:38:12,241 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 148 transitions, 408 flow [2022-10-17 10:38:12,247 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:38:12,248 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;@6f4574ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:38:12,248 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-10-17 10:38:12,255 INFO L130 PetriNetUnfolder]: 5/66 cut-off events. [2022-10-17 10:38:12,255 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:38:12,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:38:12,255 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] [2022-10-17 10:38:12,256 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:38:12,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:12,256 INFO L85 PathProgramCache]: Analyzing trace with hash 2000248789, now seen corresponding path program 1 times [2022-10-17 10:38:12,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:38:12,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429745484] [2022-10-17 10:38:12,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:12,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:38:12,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:12,282 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 10:38:12,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:38:12,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429745484] [2022-10-17 10:38:12,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429745484] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:38:12,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:38:12,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:38:12,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560811460] [2022-10-17 10:38:12,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:38:12,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:38:12,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:38:12,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:38:12,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:38:12,285 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 148 [2022-10-17 10:38:12,286 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 148 transitions, 408 flow. Second operand has 2 states, 2 states have (on average 109.5) internal successors, (219), 2 states have internal predecessors, (219), 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 10:38:12,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:38:12,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 148 [2022-10-17 10:38:12,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:38:13,934 INFO L130 PetriNetUnfolder]: 1817/8124 cut-off events. [2022-10-17 10:38:13,934 INFO L131 PetriNetUnfolder]: For 6300/6300 co-relation queries the response was YES. [2022-10-17 10:38:13,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12362 conditions, 8124 events. 1817/8124 cut-off events. For 6300/6300 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 74156 event pairs, 313 based on Foata normal form. 1608/9190 useless extension candidates. Maximal degree in co-relation 5959. Up to 2073 conditions per place. [2022-10-17 10:38:13,986 INFO L137 encePairwiseOnDemand]: 140/148 looper letters, 8 selfloop transitions, 0 changer transitions 40/128 dead transitions. [2022-10-17 10:38:13,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 128 transitions, 416 flow [2022-10-17 10:38:13,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:38:13,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-10-17 10:38:13,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 248 transitions. [2022-10-17 10:38:13,989 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8378378378378378 [2022-10-17 10:38:13,989 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 248 transitions. [2022-10-17 10:38:13,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 248 transitions. [2022-10-17 10:38:13,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:38:13,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 248 transitions. [2022-10-17 10:38:13,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 124.0) internal successors, (248), 2 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:38:13,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 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 10:38:13,993 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 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 10:38:13,993 INFO L175 Difference]: Start difference. First operand has 141 places, 148 transitions, 408 flow. Second operand 2 states and 248 transitions. [2022-10-17 10:38:13,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 128 transitions, 416 flow [2022-10-17 10:38:13,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 128 transitions, 416 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-10-17 10:38:14,001 INFO L231 Difference]: Finished difference. Result has 130 places, 88 transitions, 240 flow [2022-10-17 10:38:14,001 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=240, PETRI_PLACES=130, PETRI_TRANSITIONS=88} [2022-10-17 10:38:14,002 INFO L287 CegarLoopForPetriNet]: 141 programPoint places, -11 predicate places. [2022-10-17 10:38:14,002 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 88 transitions, 240 flow [2022-10-17 10:38:14,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 109.5) internal successors, (219), 2 states have internal predecessors, (219), 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 10:38:14,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:38:14,003 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 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 10:38:14,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:38:14,004 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:38:14,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:14,004 INFO L85 PathProgramCache]: Analyzing trace with hash 160100486, now seen corresponding path program 1 times [2022-10-17 10:38:14,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:38:14,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613282085] [2022-10-17 10:38:14,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:14,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:38:14,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:38:14,033 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:38:14,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:38:14,064 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:38:14,064 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 10:38:14,064 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2022-10-17 10:38:14,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-10-17 10:38:14,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-10-17 10:38:14,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2022-10-17 10:38:14,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2022-10-17 10:38:14,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-10-17 10:38:14,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-10-17 10:38:14,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:38:14,066 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-10-17 10:38:14,067 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-17 10:38:14,067 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-10-17 10:38:14,109 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2022-10-17 10:38:14,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 167 transitions, 484 flow [2022-10-17 10:38:20,716 INFO L130 PetriNetUnfolder]: 11372/35606 cut-off events. [2022-10-17 10:38:20,717 INFO L131 PetriNetUnfolder]: For 10450/10450 co-relation queries the response was YES. [2022-10-17 10:38:21,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46032 conditions, 35606 events. 11372/35606 cut-off events. For 10450/10450 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 380464 event pairs, 4296 based on Foata normal form. 0/31366 useless extension candidates. Maximal degree in co-relation 22301. Up to 5120 conditions per place. [2022-10-17 10:38:21,127 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 167 transitions, 484 flow [2022-10-17 10:38:21,366 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 167 transitions, 484 flow [2022-10-17 10:38:21,369 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:38:21,370 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;@6f4574ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:38:21,370 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-10-17 10:38:21,376 INFO L130 PetriNetUnfolder]: 5/65 cut-off events. [2022-10-17 10:38:21,376 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:38:21,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:38:21,377 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] [2022-10-17 10:38:21,377 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2022-10-17 10:38:21,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:21,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1616139133, now seen corresponding path program 1 times [2022-10-17 10:38:21,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:38:21,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995438478] [2022-10-17 10:38:21,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:21,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:38:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:21,450 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 10:38:21,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:38:21,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995438478] [2022-10-17 10:38:21,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995438478] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:38:21,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:38:21,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:38:21,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327551635] [2022-10-17 10:38:21,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:38:21,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:38:21,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:38:21,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:38:21,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:38:21,454 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 167 [2022-10-17 10:38:21,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 167 transitions, 484 flow. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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 10:38:21,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:38:21,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 167 [2022-10-17 10:38:21,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:38:30,320 INFO L130 PetriNetUnfolder]: 13354/43665 cut-off events. [2022-10-17 10:38:30,320 INFO L131 PetriNetUnfolder]: For 15570/15570 co-relation queries the response was YES. [2022-10-17 10:38:30,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90314 conditions, 43665 events. 13354/43665 cut-off events. For 15570/15570 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 509352 event pairs, 1312 based on Foata normal form. 44070/85669 useless extension candidates. Maximal degree in co-relation 43352. Up to 21516 conditions per place. [2022-10-17 10:38:30,687 INFO L137 encePairwiseOnDemand]: 146/167 looper letters, 26 selfloop transitions, 4 changer transitions 72/179 dead transitions. [2022-10-17 10:38:30,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 179 transitions, 750 flow [2022-10-17 10:38:30,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:38:30,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:38:30,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2022-10-17 10:38:30,691 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.782435129740519 [2022-10-17 10:38:30,691 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2022-10-17 10:38:30,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2022-10-17 10:38:30,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:38:30,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2022-10-17 10:38:30,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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 10:38:30,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:38:30,697 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:38:30,697 INFO L175 Difference]: Start difference. First operand has 159 places, 167 transitions, 484 flow. Second operand 3 states and 392 transitions. [2022-10-17 10:38:30,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 179 transitions, 750 flow [2022-10-17 10:38:30,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 179 transitions, 750 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-10-17 10:38:30,713 INFO L231 Difference]: Finished difference. Result has 147 places, 101 transitions, 310 flow [2022-10-17 10:38:30,714 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=310, PETRI_PLACES=147, PETRI_TRANSITIONS=101} [2022-10-17 10:38:30,715 INFO L287 CegarLoopForPetriNet]: 159 programPoint places, -12 predicate places. [2022-10-17 10:38:30,715 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 101 transitions, 310 flow [2022-10-17 10:38:30,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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 10:38:30,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:38:30,716 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 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 10:38:30,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 10:38:30,716 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2022-10-17 10:38:30,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:30,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1568276886, now seen corresponding path program 1 times [2022-10-17 10:38:30,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:38:30,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454424161] [2022-10-17 10:38:30,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:30,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:38:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:38:30,746 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:38:30,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:38:30,776 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:38:30,776 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 10:38:30,777 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2022-10-17 10:38:30,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2022-10-17 10:38:30,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 8 remaining) [2022-10-17 10:38:30,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2022-10-17 10:38:30,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2022-10-17 10:38:30,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2022-10-17 10:38:30,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 8 remaining) [2022-10-17 10:38:30,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 8 remaining) [2022-10-17 10:38:30,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-17 10:38:30,779 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-10-17 10:38:30,780 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-17 10:38:30,780 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2022-10-17 10:38:30,821 INFO L144 ThreadInstanceAdder]: Constructed 24 joinOtherThreadTransitions. [2022-10-17 10:38:30,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 186 transitions, 564 flow