./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-lit/sssc12.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc0cf7c0-7c07-42cd-b3cc-dee68f2e88c0/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc0cf7c0-7c07-42cd-b3cc-dee68f2e88c0/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc0cf7c0-7c07-42cd-b3cc-dee68f2e88c0/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc0cf7c0-7c07-42cd-b3cc-dee68f2e88c0/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-lit/sssc12.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc0cf7c0-7c07-42cd-b3cc-dee68f2e88c0/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc0cf7c0-7c07-42cd-b3cc-dee68f2e88c0/bin/uautomizer-ug76WZFUDN --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 3f447624cefe078f3d1dfeed3af04dfcf2078828fba23b82e0579b17d6eb7f02 --- 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-6b4ec56 [2022-11-20 11:10:23,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:10:23,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:10:23,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:10:23,798 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:10:23,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:10:23,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:10:23,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:10:23,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:10:23,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:10:23,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:10:23,821 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:10:23,821 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:10:23,824 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:10:23,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:10:23,830 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:10:23,832 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:10:23,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:10:23,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:10:23,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:10:23,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:10:23,845 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:10:23,847 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:10:23,848 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:10:23,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:10:23,860 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:10:23,860 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:10:23,861 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:10:23,863 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:10:23,864 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:10:23,864 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:10:23,865 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:10:23,867 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:10:23,868 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:10:23,869 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:10:23,869 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:10:23,870 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:10:23,870 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:10:23,870 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:10:23,871 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:10:23,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:10:23,873 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc0cf7c0-7c07-42cd-b3cc-dee68f2e88c0/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:10:23,913 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:10:23,914 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:10:23,914 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:10:23,915 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:10:23,915 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:10:23,916 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:10:23,916 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:10:23,917 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:10:23,917 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:10:23,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:10:23,918 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:10:23,919 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:10:23,919 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:10:23,919 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:10:23,919 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:10:23,920 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:10:23,920 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:10:23,920 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:10:23,920 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:10:23,921 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:10:23,921 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:10:23,921 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:10:23,921 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:10:23,922 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:10:23,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:10:23,922 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:10:23,922 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:10:23,923 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:10:23,923 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:10:23,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:10:23,924 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:10:23,924 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:10:23,924 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:10:23,925 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_dc0cf7c0-7c07-42cd-b3cc-dee68f2e88c0/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc0cf7c0-7c07-42cd-b3cc-dee68f2e88c0/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f447624cefe078f3d1dfeed3af04dfcf2078828fba23b82e0579b17d6eb7f02 [2022-11-20 11:10:24,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:10:24,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:10:24,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:10:24,266 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:10:24,267 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:10:24,268 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc0cf7c0-7c07-42cd-b3cc-dee68f2e88c0/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread-lit/sssc12.i [2022-11-20 11:10:27,519 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:10:27,875 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:10:27,876 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc0cf7c0-7c07-42cd-b3cc-dee68f2e88c0/sv-benchmarks/c/pthread-lit/sssc12.i [2022-11-20 11:10:27,893 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc0cf7c0-7c07-42cd-b3cc-dee68f2e88c0/bin/uautomizer-ug76WZFUDN/data/5ccd70631/7c89614633e74b19a5f90b070c4e4b4d/FLAG792390ad6 [2022-11-20 11:10:27,909 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc0cf7c0-7c07-42cd-b3cc-dee68f2e88c0/bin/uautomizer-ug76WZFUDN/data/5ccd70631/7c89614633e74b19a5f90b070c4e4b4d [2022-11-20 11:10:27,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:10:27,913 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:10:27,914 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:10:27,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:10:27,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:10:27,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:10:27" (1/1) ... [2022-11-20 11:10:27,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a6a9449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:27, skipping insertion in model container [2022-11-20 11:10:27,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:10:27" (1/1) ... [2022-11-20 11:10:27,929 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:10:27,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:10:28,459 WARN L237 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_dc0cf7c0-7c07-42cd-b3cc-dee68f2e88c0/sv-benchmarks/c/pthread-lit/sssc12.i[46865,46878] [2022-11-20 11:10:28,493 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:10:28,506 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:10:28,546 WARN L237 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_dc0cf7c0-7c07-42cd-b3cc-dee68f2e88c0/sv-benchmarks/c/pthread-lit/sssc12.i[46865,46878] [2022-11-20 11:10:28,554 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:10:28,615 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:10:28,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:28 WrapperNode [2022-11-20 11:10:28,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:10:28,617 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:10:28,617 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:10:28,617 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:10:28,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:28" (1/1) ... [2022-11-20 11:10:28,641 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:28" (1/1) ... [2022-11-20 11:10:28,670 INFO L138 Inliner]: procedures = 275, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 82 [2022-11-20 11:10:28,671 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:10:28,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:10:28,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:10:28,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:10:28,681 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:28" (1/1) ... [2022-11-20 11:10:28,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:28" (1/1) ... [2022-11-20 11:10:28,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:28" (1/1) ... [2022-11-20 11:10:28,691 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:28" (1/1) ... [2022-11-20 11:10:28,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:28" (1/1) ... [2022-11-20 11:10:28,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:28" (1/1) ... [2022-11-20 11:10:28,703 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:28" (1/1) ... [2022-11-20 11:10:28,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:28" (1/1) ... [2022-11-20 11:10:28,707 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:10:28,708 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:10:28,709 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:10:28,709 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:10:28,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:28" (1/1) ... [2022-11-20 11:10:28,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:10:28,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc0cf7c0-7c07-42cd-b3cc-dee68f2e88c0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:10:28,743 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc0cf7c0-7c07-42cd-b3cc-dee68f2e88c0/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:10:28,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc0cf7c0-7c07-42cd-b3cc-dee68f2e88c0/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:10:28,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 11:10:28,799 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2022-11-20 11:10:28,799 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2022-11-20 11:10:28,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:10:28,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:10:28,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 11:10:28,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:10:28,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:10:28,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:10:28,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:10:28,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:10:28,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:10:28,804 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:10:28,971 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:10:28,975 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:10:29,195 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:10:29,230 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:10:29,230 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 11:10:29,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:10:29 BoogieIcfgContainer [2022-11-20 11:10:29,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:10:29,235 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:10:29,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:10:29,239 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:10:29,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:10:27" (1/3) ... [2022-11-20 11:10:29,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1643dd02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:10:29, skipping insertion in model container [2022-11-20 11:10:29,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:10:28" (2/3) ... [2022-11-20 11:10:29,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1643dd02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:10:29, skipping insertion in model container [2022-11-20 11:10:29,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:10:29" (3/3) ... [2022-11-20 11:10:29,242 INFO L112 eAbstractionObserver]: Analyzing ICFG sssc12.i [2022-11-20 11:10:29,251 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:10:29,259 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:10:29,259 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:10:29,259 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:10:29,307 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 11:10:29,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 82 transitions, 169 flow [2022-11-20 11:10:29,390 INFO L130 PetriNetUnfolder]: 7/94 cut-off events. [2022-11-20 11:10:29,390 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:10:29,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 94 events. 7/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 78 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 47. Up to 4 conditions per place. [2022-11-20 11:10:29,396 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 82 transitions, 169 flow [2022-11-20 11:10:29,400 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 82 transitions, 169 flow [2022-11-20 11:10:29,410 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:10:29,417 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;@21f4d953, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:10:29,417 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-20 11:10:29,441 INFO L130 PetriNetUnfolder]: 3/64 cut-off events. [2022-11-20 11:10:29,448 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:10:29,448 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:10:29,449 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:29,450 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:10:29,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:29,459 INFO L85 PathProgramCache]: Analyzing trace with hash -2038037136, now seen corresponding path program 1 times [2022-11-20 11:10:29,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:29,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673533519] [2022-11-20 11:10:29,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:29,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:29,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:10:29,642 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:10:29,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:10:29,752 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:10:29,758 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 11:10:29,759 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2022-11-20 11:10:29,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-11-20 11:10:29,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-11-20 11:10:29,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:10:29,764 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-20 11:10:29,772 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 11:10:29,773 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-20 11:10:29,841 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 11:10:29,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 116 transitions, 244 flow [2022-11-20 11:10:29,893 INFO L130 PetriNetUnfolder]: 12/142 cut-off events. [2022-11-20 11:10:29,894 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 11:10:29,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 142 events. 12/142 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 250 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 95. Up to 6 conditions per place. [2022-11-20 11:10:29,896 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 116 transitions, 244 flow [2022-11-20 11:10:29,898 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 116 transitions, 244 flow [2022-11-20 11:10:29,900 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:10:29,901 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;@21f4d953, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:10:29,901 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-20 11:10:29,980 INFO L130 PetriNetUnfolder]: 6/99 cut-off events. [2022-11-20 11:10:29,994 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 11:10:29,994 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:10:29,994 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:29,995 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-20 11:10:29,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:29,996 INFO L85 PathProgramCache]: Analyzing trace with hash 45538975, now seen corresponding path program 1 times [2022-11-20 11:10:29,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:29,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337935054] [2022-11-20 11:10:29,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:29,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:30,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:10:30,069 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:10:30,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:10:30,101 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:10:30,101 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 11:10:30,101 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-11-20 11:10:30,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-11-20 11:10:30,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2022-11-20 11:10:30,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-11-20 11:10:30,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:10:30,103 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-20 11:10:30,104 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 11:10:30,104 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-20 11:10:30,135 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 11:10:30,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 150 transitions, 321 flow [2022-11-20 11:10:30,185 INFO L130 PetriNetUnfolder]: 17/190 cut-off events. [2022-11-20 11:10:30,185 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-20 11:10:30,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 190 events. 17/190 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 436 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 146. Up to 8 conditions per place. [2022-11-20 11:10:30,188 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 150 transitions, 321 flow [2022-11-20 11:10:30,191 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 150 transitions, 321 flow [2022-11-20 11:10:30,192 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:10:30,194 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;@21f4d953, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:10:30,194 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-20 11:10:30,219 INFO L130 PetriNetUnfolder]: 8/129 cut-off events. [2022-11-20 11:10:30,219 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-20 11:10:30,220 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:10:30,220 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:30,220 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 11:10:30,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:30,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1613414299, now seen corresponding path program 1 times [2022-11-20 11:10:30,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:30,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551637496] [2022-11-20 11:10:30,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:30,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:30,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:10:30,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:30,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551637496] [2022-11-20 11:10:30,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551637496] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:30,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:30,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:10:30,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038660403] [2022-11-20 11:10:30,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:30,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:10:30,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:30,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:10:30,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:10:30,642 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 150 [2022-11-20 11:10:30,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 150 transitions, 321 flow. Second operand has 4 states, 4 states have (on average 119.25) internal successors, (477), 4 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:30,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:10:30,651 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 150 [2022-11-20 11:10:30,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:10:31,066 INFO L130 PetriNetUnfolder]: 372/1535 cut-off events. [2022-11-20 11:10:31,067 INFO L131 PetriNetUnfolder]: For 340/340 co-relation queries the response was YES. [2022-11-20 11:10:31,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2301 conditions, 1535 events. 372/1535 cut-off events. For 340/340 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 11800 event pairs, 193 based on Foata normal form. 447/1822 useless extension candidates. Maximal degree in co-relation 1582. Up to 362 conditions per place. [2022-11-20 11:10:31,095 INFO L137 encePairwiseOnDemand]: 137/150 looper letters, 32 selfloop transitions, 3 changer transitions 1/146 dead transitions. [2022-11-20 11:10:31,095 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 146 transitions, 407 flow [2022-11-20 11:10:31,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:10:31,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:10:31,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 526 transitions. [2022-11-20 11:10:31,118 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8766666666666667 [2022-11-20 11:10:31,118 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 526 transitions. [2022-11-20 11:10:31,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 526 transitions. [2022-11-20 11:10:31,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:10:31,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 526 transitions. [2022-11-20 11:10:31,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 131.5) internal successors, (526), 4 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:31,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:31,141 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:31,144 INFO L175 Difference]: Start difference. First operand has 143 places, 150 transitions, 321 flow. Second operand 4 states and 526 transitions. [2022-11-20 11:10:31,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 146 transitions, 407 flow [2022-11-20 11:10:31,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 146 transitions, 397 flow, removed 5 selfloop flow, removed 0 redundant places. [2022-11-20 11:10:31,154 INFO L231 Difference]: Finished difference. Result has 137 places, 131 transitions, 287 flow [2022-11-20 11:10:31,157 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=287, PETRI_PLACES=137, PETRI_TRANSITIONS=131} [2022-11-20 11:10:31,166 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, -6 predicate places. [2022-11-20 11:10:31,167 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 131 transitions, 287 flow [2022-11-20 11:10:31,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 119.25) internal successors, (477), 4 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:31,168 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:10:31,168 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:31,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:10:31,169 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 11:10:31,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:31,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1301607399, now seen corresponding path program 1 times [2022-11-20 11:10:31,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:31,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010491878] [2022-11-20 11:10:31,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:31,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:31,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:10:31,237 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:10:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:10:31,273 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:10:31,274 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 11:10:31,274 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-11-20 11:10:31,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-11-20 11:10:31,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-11-20 11:10:31,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-11-20 11:10:31,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-11-20 11:10:31,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:10:31,275 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-20 11:10:31,276 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 11:10:31,276 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-20 11:10:31,324 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 11:10:31,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 184 transitions, 400 flow [2022-11-20 11:10:31,379 INFO L130 PetriNetUnfolder]: 22/238 cut-off events. [2022-11-20 11:10:31,379 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-20 11:10:31,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 238 events. 22/238 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 631 event pairs, 0 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 198. Up to 10 conditions per place. [2022-11-20 11:10:31,381 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 184 transitions, 400 flow [2022-11-20 11:10:31,386 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 184 transitions, 400 flow [2022-11-20 11:10:31,388 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:10:31,395 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;@21f4d953, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:10:31,395 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-20 11:10:31,410 INFO L130 PetriNetUnfolder]: 9/131 cut-off events. [2022-11-20 11:10:31,410 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-20 11:10:31,410 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:10:31,411 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:31,411 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-20 11:10:31,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:31,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1522313636, now seen corresponding path program 1 times [2022-11-20 11:10:31,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:31,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113689369] [2022-11-20 11:10:31,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:31,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:31,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:10:31,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:31,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113689369] [2022-11-20 11:10:31,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113689369] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:31,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:31,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:10:31,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566575469] [2022-11-20 11:10:31,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:31,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:10:31,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:31,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:10:31,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:10:31,594 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 184 [2022-11-20 11:10:31,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 184 transitions, 400 flow. Second operand has 4 states, 4 states have (on average 147.25) internal successors, (589), 4 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:31,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:10:31,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 184 [2022-11-20 11:10:31,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:10:33,430 INFO L130 PetriNetUnfolder]: 1890/7960 cut-off events. [2022-11-20 11:10:33,430 INFO L131 PetriNetUnfolder]: For 1861/1861 co-relation queries the response was YES. [2022-11-20 11:10:33,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11030 conditions, 7960 events. 1890/7960 cut-off events. For 1861/1861 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 87963 event pairs, 1192 based on Foata normal form. 1746/8795 useless extension candidates. Maximal degree in co-relation 3675. Up to 1452 conditions per place. [2022-11-20 11:10:33,535 INFO L137 encePairwiseOnDemand]: 169/184 looper letters, 41 selfloop transitions, 3 changer transitions 1/183 dead transitions. [2022-11-20 11:10:33,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 183 transitions, 528 flow [2022-11-20 11:10:33,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:10:33,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:10:33,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 653 transitions. [2022-11-20 11:10:33,538 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8872282608695652 [2022-11-20 11:10:33,538 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 653 transitions. [2022-11-20 11:10:33,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 653 transitions. [2022-11-20 11:10:33,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:10:33,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 653 transitions. [2022-11-20 11:10:33,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 163.25) internal successors, (653), 4 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:33,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:33,544 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:33,545 INFO L175 Difference]: Start difference. First operand has 175 places, 184 transitions, 400 flow. Second operand 4 states and 653 transitions. [2022-11-20 11:10:33,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 183 transitions, 528 flow [2022-11-20 11:10:33,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 183 transitions, 504 flow, removed 12 selfloop flow, removed 0 redundant places. [2022-11-20 11:10:33,562 INFO L231 Difference]: Finished difference. Result has 168 places, 162 transitions, 354 flow [2022-11-20 11:10:33,562 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=354, PETRI_PLACES=168, PETRI_TRANSITIONS=162} [2022-11-20 11:10:33,564 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, -7 predicate places. [2022-11-20 11:10:33,564 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 162 transitions, 354 flow [2022-11-20 11:10:33,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 147.25) internal successors, (589), 4 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:33,566 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:10:33,567 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:33,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:10:33,572 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-20 11:10:33,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:33,573 INFO L85 PathProgramCache]: Analyzing trace with hash -945135595, now seen corresponding path program 1 times [2022-11-20 11:10:33,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:33,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229118224] [2022-11-20 11:10:33,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:33,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:33,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:33,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:10:33,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:33,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229118224] [2022-11-20 11:10:33,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229118224] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:33,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:33,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:10:33,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962384325] [2022-11-20 11:10:33,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:33,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:10:33,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:33,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:10:33,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:10:33,871 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 184 [2022-11-20 11:10:33,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 162 transitions, 354 flow. Second operand has 8 states, 8 states have (on average 119.5) internal successors, (956), 8 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:33,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:10:33,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 184 [2022-11-20 11:10:33,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:10:55,455 INFO L130 PetriNetUnfolder]: 85323/157903 cut-off events. [2022-11-20 11:10:55,455 INFO L131 PetriNetUnfolder]: For 13381/13381 co-relation queries the response was YES. [2022-11-20 11:10:56,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287877 conditions, 157903 events. 85323/157903 cut-off events. For 13381/13381 co-relation queries the response was YES. Maximal size of possible extension queue 6057. Compared 1864031 event pairs, 7373 based on Foata normal form. 0/143627 useless extension candidates. Maximal degree in co-relation 287572. Up to 33498 conditions per place. [2022-11-20 11:10:57,315 INFO L137 encePairwiseOnDemand]: 163/184 looper letters, 273 selfloop transitions, 21 changer transitions 0/404 dead transitions. [2022-11-20 11:10:57,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 404 transitions, 1565 flow [2022-11-20 11:10:57,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:10:57,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 11:10:57,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1473 transitions. [2022-11-20 11:10:57,321 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8005434782608696 [2022-11-20 11:10:57,321 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1473 transitions. [2022-11-20 11:10:57,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1473 transitions. [2022-11-20 11:10:57,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:10:57,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1473 transitions. [2022-11-20 11:10:57,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 147.3) internal successors, (1473), 10 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:57,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 184.0) internal successors, (2024), 11 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:57,333 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 184.0) internal successors, (2024), 11 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:57,333 INFO L175 Difference]: Start difference. First operand has 168 places, 162 transitions, 354 flow. Second operand 10 states and 1473 transitions. [2022-11-20 11:10:57,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 404 transitions, 1565 flow [2022-11-20 11:10:57,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 404 transitions, 1549 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:10:57,461 INFO L231 Difference]: Finished difference. Result has 182 places, 182 transitions, 532 flow [2022-11-20 11:10:57,462 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=532, PETRI_PLACES=182, PETRI_TRANSITIONS=182} [2022-11-20 11:10:57,463 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, 7 predicate places. [2022-11-20 11:10:57,463 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 182 transitions, 532 flow [2022-11-20 11:10:57,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 119.5) internal successors, (956), 8 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:57,464 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:10:57,464 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:57,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:10:57,465 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-20 11:10:57,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:57,466 INFO L85 PathProgramCache]: Analyzing trace with hash -165539028, now seen corresponding path program 1 times [2022-11-20 11:10:57,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:57,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602816534] [2022-11-20 11:10:57,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:57,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:57,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:57,566 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:10:57,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:57,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602816534] [2022-11-20 11:10:57,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602816534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:57,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:57,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:10:57,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12270400] [2022-11-20 11:10:57,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:57,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:10:57,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:57,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:10:57,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:10:57,574 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 184 [2022-11-20 11:10:57,575 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 182 transitions, 532 flow. Second operand has 4 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:57,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:10:57,576 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 184 [2022-11-20 11:10:57,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:11:01,009 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([735] L1028-1-->L1026-2: Formula: (= v_~next~0_6 |v_thrThread2of4ForFork0_~end~0#1_7|) InVars {thrThread2of4ForFork0_~end~0#1=|v_thrThread2of4ForFork0_~end~0#1_7|} OutVars{~next~0=v_~next~0_6, thrThread2of4ForFork0_~end~0#1=|v_thrThread2of4ForFork0_~end~0#1_7|} AuxVars[] AssignedVars[~next~0][143], [189#(and (= |thrThread1of4ForFork0_~c~0#1| 0) (<= 10 ~len~0)), Black: 193#(and (not (= |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| 0)) (= |thrThread1of4ForFork0_~c~0#1| 0) (<= 10 ~len~0)), 63#L1026-2true, Black: 195#(and (not (= |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| 0)) (not (= |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| 0)) (= |thrThread1of4ForFork0_~c~0#1| 0) (<= 10 ~len~0)), thrThread1of4ForFork0InUse, Black: 186#(= ~next~0 0), Black: 191#(not (= |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| 0)), Black: 187#(and (<= (+ ~next~0 10) ~len~0) (= ~next~0 0)), thrThread2of4ForFork0InUse, Black: 184#true, Black: 188#(and (<= (+ ~next~0 10) ~len~0) (= ~next~0 0) (= |thrThread1of4ForFork0_~c~0#1| 0)), thrThread3of4ForFork0InUse, Black: 197#(and (not (= |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| 0)) (not (= |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| 0))), thrThread4of4ForFork0InUse, 208#true, 25#L1013true, Black: 181#(and (= |thrThread1of4ForFork0_~end~0#1| 0) (= |thrThread1of4ForFork0_~c~0#1| 0)), 39#L1046-4true, 128#L1026-2true, 92#L1028true]) [2022-11-20 11:11:01,009 INFO L383 tUnfolder$Statistics]: this new event has 98 ancestors and is cut-off event [2022-11-20 11:11:01,010 INFO L386 tUnfolder$Statistics]: existing Event has 98 ancestors and is cut-off event [2022-11-20 11:11:01,010 INFO L386 tUnfolder$Statistics]: existing Event has 98 ancestors and is cut-off event [2022-11-20 11:11:01,010 INFO L386 tUnfolder$Statistics]: existing Event has 98 ancestors and is cut-off event [2022-11-20 11:11:01,265 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([800] L1016-->L1019: Formula: (and (= v_~lock~0_29 0) (= |v_thrThread4of4ForFork0_assume_abort_if_not_#in~cond#1_3| |v_thrThread4of4ForFork0_assume_abort_if_not_~cond#1_3|) (= |v_thrThread4of4ForFork0_assume_abort_if_not_#in~cond#1_3| (ite (= v_~lock~0_30 1) 1 0)) (not (= 0 |v_thrThread4of4ForFork0_assume_abort_if_not_~cond#1_3|))) InVars {~lock~0=v_~lock~0_30} OutVars{thrThread4of4ForFork0_assume_abort_if_not_#in~cond#1=|v_thrThread4of4ForFork0_assume_abort_if_not_#in~cond#1_3|, ~lock~0=v_~lock~0_29, thrThread4of4ForFork0_assume_abort_if_not_~cond#1=|v_thrThread4of4ForFork0_assume_abort_if_not_~cond#1_3|} AuxVars[] AssignedVars[thrThread4of4ForFork0_assume_abort_if_not_#in~cond#1, ~lock~0, thrThread4of4ForFork0_assume_abort_if_not_~cond#1][167], [30#L1019true, 189#(and (= |thrThread1of4ForFork0_~c~0#1| 0) (<= 10 ~len~0)), Black: 193#(and (not (= |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| 0)) (= |thrThread1of4ForFork0_~c~0#1| 0) (<= 10 ~len~0)), 3#L1028-1true, Black: 195#(and (not (= |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| 0)) (not (= |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| 0)) (= |thrThread1of4ForFork0_~c~0#1| 0) (<= 10 ~len~0)), thrThread1of4ForFork0InUse, Black: 186#(= ~next~0 0), Black: 191#(not (= |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| 0)), Black: 187#(and (<= (+ ~next~0 10) ~len~0) (= ~next~0 0)), thrThread2of4ForFork0InUse, Black: 184#true, Black: 188#(and (<= (+ ~next~0 10) ~len~0) (= ~next~0 0) (= |thrThread1of4ForFork0_~c~0#1| 0)), thrThread3of4ForFork0InUse, Black: 197#(and (not (= |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| 0)) (not (= |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| 0))), thrThread4of4ForFork0InUse, 208#true, 25#L1013true, Black: 181#(and (= |thrThread1of4ForFork0_~end~0#1| 0) (= |thrThread1of4ForFork0_~c~0#1| 0)), 39#L1046-4true, 92#L1028true]) [2022-11-20 11:11:01,265 INFO L383 tUnfolder$Statistics]: this new event has 99 ancestors and is cut-off event [2022-11-20 11:11:01,265 INFO L386 tUnfolder$Statistics]: existing Event has 99 ancestors and is cut-off event [2022-11-20 11:11:01,266 INFO L386 tUnfolder$Statistics]: existing Event has 99 ancestors and is cut-off event [2022-11-20 11:11:01,266 INFO L386 tUnfolder$Statistics]: existing Event has 99 ancestors and is cut-off event [2022-11-20 11:11:01,499 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([735] L1028-1-->L1026-2: Formula: (= v_~next~0_6 |v_thrThread2of4ForFork0_~end~0#1_7|) InVars {thrThread2of4ForFork0_~end~0#1=|v_thrThread2of4ForFork0_~end~0#1_7|} OutVars{~next~0=v_~next~0_6, thrThread2of4ForFork0_~end~0#1=|v_thrThread2of4ForFork0_~end~0#1_7|} AuxVars[] AssignedVars[~next~0][143], [189#(and (= |thrThread1of4ForFork0_~c~0#1| 0) (<= 10 ~len~0)), Black: 193#(and (not (= |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| 0)) (= |thrThread1of4ForFork0_~c~0#1| 0) (<= 10 ~len~0)), 63#L1026-2true, Black: 195#(and (not (= |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| 0)) (not (= |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| 0)) (= |thrThread1of4ForFork0_~c~0#1| 0) (<= 10 ~len~0)), 100#L1026-2true, thrThread1of4ForFork0InUse, Black: 186#(= ~next~0 0), Black: 191#(not (= |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| 0)), thrThread2of4ForFork0InUse, Black: 187#(and (<= (+ ~next~0 10) ~len~0) (= ~next~0 0)), Black: 184#true, thrThread3of4ForFork0InUse, Black: 188#(and (<= (+ ~next~0 10) ~len~0) (= ~next~0 0) (= |thrThread1of4ForFork0_~c~0#1| 0)), Black: 197#(and (not (= |thrThread1of4ForFork0___VERIFIER_assert_~cond#1| 0)) (not (= |thrThread1of4ForFork0___VERIFIER_assert_#in~cond#1| 0))), thrThread4of4ForFork0InUse, 208#true, 25#L1013true, Black: 181#(and (= |thrThread1of4ForFork0_~end~0#1| 0) (= |thrThread1of4ForFork0_~c~0#1| 0)), 39#L1046-4true, 128#L1026-2true]) [2022-11-20 11:11:01,499 INFO L383 tUnfolder$Statistics]: this new event has 100 ancestors and is cut-off event [2022-11-20 11:11:01,499 INFO L386 tUnfolder$Statistics]: existing Event has 97 ancestors and is cut-off event [2022-11-20 11:11:01,500 INFO L386 tUnfolder$Statistics]: existing Event has 97 ancestors and is cut-off event [2022-11-20 11:11:01,500 INFO L386 tUnfolder$Statistics]: existing Event has 97 ancestors and is cut-off event [2022-11-20 11:11:04,085 INFO L130 PetriNetUnfolder]: 12614/46435 cut-off events. [2022-11-20 11:11:04,085 INFO L131 PetriNetUnfolder]: For 7857/10325 co-relation queries the response was YES. [2022-11-20 11:11:04,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74751 conditions, 46435 events. 12614/46435 cut-off events. For 7857/10325 co-relation queries the response was YES. Maximal size of possible extension queue 2005. Compared 680404 event pairs, 6048 based on Foata normal form. 77/40847 useless extension candidates. Maximal degree in co-relation 74586. Up to 8662 conditions per place. [2022-11-20 11:11:04,667 INFO L137 encePairwiseOnDemand]: 180/184 looper letters, 41 selfloop transitions, 3 changer transitions 0/200 dead transitions. [2022-11-20 11:11:04,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 200 transitions, 676 flow [2022-11-20 11:11:04,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:11:04,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:11:04,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 623 transitions. [2022-11-20 11:11:04,670 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8464673913043478 [2022-11-20 11:11:04,670 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 623 transitions. [2022-11-20 11:11:04,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 623 transitions. [2022-11-20 11:11:04,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:11:04,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 623 transitions. [2022-11-20 11:11:04,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:04,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:04,676 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:04,676 INFO L175 Difference]: Start difference. First operand has 182 places, 182 transitions, 532 flow. Second operand 4 states and 623 transitions. [2022-11-20 11:11:04,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 200 transitions, 676 flow [2022-11-20 11:11:04,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 200 transitions, 676 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:11:04,837 INFO L231 Difference]: Finished difference. Result has 186 places, 182 transitions, 542 flow [2022-11-20 11:11:04,838 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=542, PETRI_PLACES=186, PETRI_TRANSITIONS=182} [2022-11-20 11:11:04,839 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, 11 predicate places. [2022-11-20 11:11:04,839 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 182 transitions, 542 flow [2022-11-20 11:11:04,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:04,839 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:11:04,839 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:04,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:11:04,840 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-20 11:11:04,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:04,841 INFO L85 PathProgramCache]: Analyzing trace with hash -377843776, now seen corresponding path program 1 times [2022-11-20 11:11:04,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:04,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117376939] [2022-11-20 11:11:04,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:04,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:11:04,870 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:11:04,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:11:04,913 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:11:04,914 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 11:11:04,914 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2022-11-20 11:11:04,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-11-20 11:11:04,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2022-11-20 11:11:04,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-11-20 11:11:04,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-11-20 11:11:04,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-11-20 11:11:04,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:11:04,915 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-20 11:11:04,916 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 11:11:04,917 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-20 11:11:04,958 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 11:11:04,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 218 transitions, 481 flow [2022-11-20 11:11:05,004 INFO L130 PetriNetUnfolder]: 27/286 cut-off events. [2022-11-20 11:11:05,004 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-20 11:11:05,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 286 events. 27/286 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 823 event pairs, 0 based on Foata normal form. 0/248 useless extension candidates. Maximal degree in co-relation 251. Up to 12 conditions per place. [2022-11-20 11:11:05,007 INFO L82 GeneralOperation]: Start removeDead. Operand has 207 places, 218 transitions, 481 flow [2022-11-20 11:11:05,013 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 218 transitions, 481 flow [2022-11-20 11:11:05,016 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:11:05,017 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;@21f4d953, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:11:05,017 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-20 11:11:05,028 INFO L130 PetriNetUnfolder]: 9/135 cut-off events. [2022-11-20 11:11:05,028 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-20 11:11:05,028 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:11:05,028 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:05,028 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-20 11:11:05,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:05,029 INFO L85 PathProgramCache]: Analyzing trace with hash -875921481, now seen corresponding path program 1 times [2022-11-20 11:11:05,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:05,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077624279] [2022-11-20 11:11:05,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:05,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:05,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:05,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:05,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:05,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077624279] [2022-11-20 11:11:05,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077624279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:05,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:05,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:11:05,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424559926] [2022-11-20 11:11:05,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:05,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:11:05,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:05,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:11:05,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:11:05,134 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 218 [2022-11-20 11:11:05,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 218 transitions, 481 flow. Second operand has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:05,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:11:05,135 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 218 [2022-11-20 11:11:05,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:11:09,137 INFO L130 PetriNetUnfolder]: 7057/25564 cut-off events. [2022-11-20 11:11:09,137 INFO L131 PetriNetUnfolder]: For 8687/8687 co-relation queries the response was YES. [2022-11-20 11:11:09,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36934 conditions, 25564 events. 7057/25564 cut-off events. For 8687/8687 co-relation queries the response was YES. Maximal size of possible extension queue 828. Compared 326902 event pairs, 3628 based on Foata normal form. 6649/29522 useless extension candidates. Maximal degree in co-relation 23983. Up to 5406 conditions per place. [2022-11-20 11:11:09,469 INFO L137 encePairwiseOnDemand]: 201/218 looper letters, 50 selfloop transitions, 3 changer transitions 1/220 dead transitions. [2022-11-20 11:11:09,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 220 transitions, 655 flow [2022-11-20 11:11:09,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:11:09,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:11:09,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 780 transitions. [2022-11-20 11:11:09,473 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8944954128440367 [2022-11-20 11:11:09,473 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 780 transitions. [2022-11-20 11:11:09,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 780 transitions. [2022-11-20 11:11:09,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:11:09,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 780 transitions. [2022-11-20 11:11:09,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 195.0) internal successors, (780), 4 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:09,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 218.0) internal successors, (1090), 5 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:09,479 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 218.0) internal successors, (1090), 5 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:09,479 INFO L175 Difference]: Start difference. First operand has 207 places, 218 transitions, 481 flow. Second operand 4 states and 780 transitions. [2022-11-20 11:11:09,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 220 transitions, 655 flow [2022-11-20 11:11:09,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 220 transitions, 611 flow, removed 22 selfloop flow, removed 0 redundant places. [2022-11-20 11:11:09,486 INFO L231 Difference]: Finished difference. Result has 199 places, 193 transitions, 421 flow [2022-11-20 11:11:09,486 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=421, PETRI_PLACES=199, PETRI_TRANSITIONS=193} [2022-11-20 11:11:09,487 INFO L288 CegarLoopForPetriNet]: 207 programPoint places, -8 predicate places. [2022-11-20 11:11:09,487 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 193 transitions, 421 flow [2022-11-20 11:11:09,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:09,488 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:11:09,488 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:09,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:11:09,489 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-20 11:11:09,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:09,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1385448054, now seen corresponding path program 1 times [2022-11-20 11:11:09,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:09,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161529866] [2022-11-20 11:11:09,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:09,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:09,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:09,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:09,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161529866] [2022-11-20 11:11:09,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161529866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:09,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:09,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:11:09,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785343477] [2022-11-20 11:11:09,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:09,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:11:09,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:09,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:11:09,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:11:09,699 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 218 [2022-11-20 11:11:09,701 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 193 transitions, 421 flow. Second operand has 8 states, 8 states have (on average 141.5) internal successors, (1132), 8 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:09,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:11:09,701 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 218 [2022-11-20 11:11:09,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand