./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/reorder_5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d860818-1ce1-49b3-b7e4-c7d82d129534/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d860818-1ce1-49b3-b7e4-c7d82d129534/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d860818-1ce1-49b3-b7e4-c7d82d129534/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d860818-1ce1-49b3-b7e4-c7d82d129534/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/reorder_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d860818-1ce1-49b3-b7e4-c7d82d129534/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d860818-1ce1-49b3-b7e4-c7d82d129534/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c2478eeb4380713960dd80551c9d8e99269809d2bcbd284785221597bb31a471 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:20:29,250 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:20:29,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:20:29,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:20:29,296 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:20:29,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:20:29,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:20:29,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:20:29,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:20:29,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:20:29,313 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:20:29,316 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:20:29,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:20:29,322 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:20:29,323 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:20:29,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:20:29,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:20:29,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:20:29,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:20:29,333 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:20:29,337 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:20:29,338 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:20:29,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:20:29,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:20:29,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:20:29,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:20:29,353 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:20:29,354 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:20:29,356 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:20:29,357 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:20:29,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:20:29,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:20:29,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:20:29,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:20:29,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:20:29,364 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:20:29,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:20:29,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:20:29,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:20:29,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:20:29,367 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:20:29,368 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d860818-1ce1-49b3-b7e4-c7d82d129534/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:20:29,405 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:20:29,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:20:29,406 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:20:29,407 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:20:29,407 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:20:29,408 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:20:29,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:20:29,409 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:20:29,409 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:20:29,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:20:29,411 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:20:29,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:20:29,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:20:29,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:20:29,412 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:20:29,412 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:20:29,412 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:20:29,413 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:20:29,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:20:29,413 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:20:29,413 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:20:29,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:20:29,414 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:20:29,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:20:29,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:20:29,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:20:29,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:20:29,415 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:20:29,416 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:20:29,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:20:29,416 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:20:29,416 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:20:29,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:20:29,417 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_0d860818-1ce1-49b3-b7e4-c7d82d129534/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d860818-1ce1-49b3-b7e4-c7d82d129534/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2478eeb4380713960dd80551c9d8e99269809d2bcbd284785221597bb31a471 [2022-11-18 20:20:29,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:20:29,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:20:29,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:20:29,779 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:20:29,780 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:20:29,782 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d860818-1ce1-49b3-b7e4-c7d82d129534/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread/reorder_5.i [2022-11-18 20:20:29,873 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d860818-1ce1-49b3-b7e4-c7d82d129534/bin/uautomizer-TMbwUNV5ro/data/948c3ce9f/2bcf32d600ab427db4ad6a66c322d0b6/FLAGaf2d9bf95 [2022-11-18 20:20:30,475 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:20:30,476 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d860818-1ce1-49b3-b7e4-c7d82d129534/sv-benchmarks/c/pthread/reorder_5.i [2022-11-18 20:20:30,512 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d860818-1ce1-49b3-b7e4-c7d82d129534/bin/uautomizer-TMbwUNV5ro/data/948c3ce9f/2bcf32d600ab427db4ad6a66c322d0b6/FLAGaf2d9bf95 [2022-11-18 20:20:30,746 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d860818-1ce1-49b3-b7e4-c7d82d129534/bin/uautomizer-TMbwUNV5ro/data/948c3ce9f/2bcf32d600ab427db4ad6a66c322d0b6 [2022-11-18 20:20:30,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:20:30,750 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:20:30,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:20:30,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:20:30,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:20:30,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:20:30" (1/1) ... [2022-11-18 20:20:30,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d89a063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:30, skipping insertion in model container [2022-11-18 20:20:30,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:20:30" (1/1) ... [2022-11-18 20:20:30,772 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:20:30,821 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:20:31,498 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d860818-1ce1-49b3-b7e4-c7d82d129534/sv-benchmarks/c/pthread/reorder_5.i[59329,59342] [2022-11-18 20:20:31,502 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:20:31,510 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:20:31,559 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d860818-1ce1-49b3-b7e4-c7d82d129534/sv-benchmarks/c/pthread/reorder_5.i[59329,59342] [2022-11-18 20:20:31,560 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:20:31,646 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:20:31,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:31 WrapperNode [2022-11-18 20:20:31,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:20:31,648 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:20:31,648 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:20:31,648 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:20:31,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:31" (1/1) ... [2022-11-18 20:20:31,690 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:31" (1/1) ... [2022-11-18 20:20:31,724 INFO L138 Inliner]: procedures = 369, calls = 37, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 136 [2022-11-18 20:20:31,724 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:20:31,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:20:31,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:20:31,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:20:31,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:31" (1/1) ... [2022-11-18 20:20:31,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:31" (1/1) ... [2022-11-18 20:20:31,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:31" (1/1) ... [2022-11-18 20:20:31,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:31" (1/1) ... [2022-11-18 20:20:31,746 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:31" (1/1) ... [2022-11-18 20:20:31,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:31" (1/1) ... [2022-11-18 20:20:31,753 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:31" (1/1) ... [2022-11-18 20:20:31,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:31" (1/1) ... [2022-11-18 20:20:31,758 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:20:31,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:20:31,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:20:31,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:20:31,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:31" (1/1) ... [2022-11-18 20:20:31,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:20:31,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d860818-1ce1-49b3-b7e4-c7d82d129534/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:31,793 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d860818-1ce1-49b3-b7e4-c7d82d129534/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:20:31,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d860818-1ce1-49b3-b7e4-c7d82d129534/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:20:31,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:20:31,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:20:31,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:20:31,872 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2022-11-18 20:20:31,873 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2022-11-18 20:20:31,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:20:31,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:20:31,875 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2022-11-18 20:20:31,876 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2022-11-18 20:20:31,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:20:31,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:20:31,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:20:31,878 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:20:32,057 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:20:32,059 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:20:32,352 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:20:32,361 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:20:32,361 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 20:20:32,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:20:32 BoogieIcfgContainer [2022-11-18 20:20:32,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:20:32,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:20:32,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:20:32,370 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:20:32,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:20:30" (1/3) ... [2022-11-18 20:20:32,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23f6bf2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:20:32, skipping insertion in model container [2022-11-18 20:20:32,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:31" (2/3) ... [2022-11-18 20:20:32,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23f6bf2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:20:32, skipping insertion in model container [2022-11-18 20:20:32,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:20:32" (3/3) ... [2022-11-18 20:20:32,373 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_5.i [2022-11-18 20:20:32,382 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:20:32,393 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:20:32,394 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:20:32,394 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:20:32,461 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-18 20:20:32,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 158 transitions, 338 flow [2022-11-18 20:20:32,629 INFO L130 PetriNetUnfolder]: 35/334 cut-off events. [2022-11-18 20:20:32,630 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-18 20:20:32,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 334 events. 35/334 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1125 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 175. Up to 8 conditions per place. [2022-11-18 20:20:32,637 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 158 transitions, 338 flow [2022-11-18 20:20:32,651 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 156 transitions, 328 flow [2022-11-18 20:20:32,664 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:20:32,670 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;@8e6a334, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:20:32,670 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-18 20:20:32,694 INFO L130 PetriNetUnfolder]: 7/116 cut-off events. [2022-11-18 20:20:32,695 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:20:32,695 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:20:32,696 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] [2022-11-18 20:20:32,696 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:20:32,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:32,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1232634559, now seen corresponding path program 1 times [2022-11-18 20:20:32,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:32,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465793054] [2022-11-18 20:20:32,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:32,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:32,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:33,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:33,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:33,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465793054] [2022-11-18 20:20:33,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465793054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:20:33,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:20:33,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:20:33,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104368757] [2022-11-18 20:20:33,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:20:33,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:20:33,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:33,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:20:33,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:20:33,077 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 158 [2022-11-18 20:20:33,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 156 transitions, 328 flow. Second operand has 2 states, 2 states have (on average 142.0) internal successors, (284), 2 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:33,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:20:33,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 158 [2022-11-18 20:20:33,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:20:33,184 INFO L130 PetriNetUnfolder]: 5/284 cut-off events. [2022-11-18 20:20:33,184 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-18 20:20:33,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 284 events. 5/284 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 906 event pairs, 0 based on Foata normal form. 26/285 useless extension candidates. Maximal degree in co-relation 172. Up to 8 conditions per place. [2022-11-18 20:20:33,199 INFO L137 encePairwiseOnDemand]: 148/158 looper letters, 4 selfloop transitions, 0 changer transitions 6/145 dead transitions. [2022-11-18 20:20:33,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 145 transitions, 314 flow [2022-11-18 20:20:33,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:20:33,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 20:20:33,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 296 transitions. [2022-11-18 20:20:33,225 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9367088607594937 [2022-11-18 20:20:33,228 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 296 transitions. [2022-11-18 20:20:33,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 296 transitions. [2022-11-18 20:20:33,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:20:33,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 296 transitions. [2022-11-18 20:20:33,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 148.0) internal successors, (296), 2 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:33,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:33,252 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:33,254 INFO L175 Difference]: Start difference. First operand has 148 places, 156 transitions, 328 flow. Second operand 2 states and 296 transitions. [2022-11-18 20:20:33,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 145 transitions, 314 flow [2022-11-18 20:20:33,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 145 transitions, 314 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:20:33,267 INFO L231 Difference]: Finished difference. Result has 148 places, 139 transitions, 294 flow [2022-11-18 20:20:33,269 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=294, PETRI_PLACES=148, PETRI_TRANSITIONS=139} [2022-11-18 20:20:33,273 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 0 predicate places. [2022-11-18 20:20:33,274 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 139 transitions, 294 flow [2022-11-18 20:20:33,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 142.0) internal successors, (284), 2 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:33,274 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:20:33,274 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] [2022-11-18 20:20:33,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:20:33,275 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:20:33,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:33,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1938519108, now seen corresponding path program 1 times [2022-11-18 20:20:33,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:33,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175134793] [2022-11-18 20:20:33,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:33,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:33,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:33,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:33,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:33,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175134793] [2022-11-18 20:20:33,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175134793] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:20:33,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:20:33,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:20:33,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430166132] [2022-11-18 20:20:33,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:20:33,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:20:33,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:33,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:20:33,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:20:33,645 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 158 [2022-11-18 20:20:33,646 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 139 transitions, 294 flow. Second operand has 5 states, 5 states have (on average 103.6) internal successors, (518), 5 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:33,647 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:20:33,648 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 158 [2022-11-18 20:20:33,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:20:33,835 INFO L130 PetriNetUnfolder]: 5/289 cut-off events. [2022-11-18 20:20:33,836 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 20:20:33,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 417 conditions, 289 events. 5/289 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 948 event pairs, 0 based on Foata normal form. 0/266 useless extension candidates. Maximal degree in co-relation 412. Up to 101 conditions per place. [2022-11-18 20:20:33,837 INFO L137 encePairwiseOnDemand]: 151/158 looper letters, 46 selfloop transitions, 6 changer transitions 0/146 dead transitions. [2022-11-18 20:20:33,838 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 146 transitions, 412 flow [2022-11-18 20:20:33,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:20:33,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:20:33,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 553 transitions. [2022-11-18 20:20:33,842 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7 [2022-11-18 20:20:33,842 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 553 transitions. [2022-11-18 20:20:33,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 553 transitions. [2022-11-18 20:20:33,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:20:33,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 553 transitions. [2022-11-18 20:20:33,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.6) internal successors, (553), 5 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:33,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:33,849 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:33,849 INFO L175 Difference]: Start difference. First operand has 148 places, 139 transitions, 294 flow. Second operand 5 states and 553 transitions. [2022-11-18 20:20:33,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 146 transitions, 412 flow [2022-11-18 20:20:33,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 146 transitions, 412 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:20:33,855 INFO L231 Difference]: Finished difference. Result has 149 places, 143 transitions, 333 flow [2022-11-18 20:20:33,855 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=333, PETRI_PLACES=149, PETRI_TRANSITIONS=143} [2022-11-18 20:20:33,856 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 1 predicate places. [2022-11-18 20:20:33,856 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 143 transitions, 333 flow [2022-11-18 20:20:33,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 103.6) internal successors, (518), 5 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:33,857 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:20:33,857 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:33,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:20:33,858 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:20:33,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:33,859 INFO L85 PathProgramCache]: Analyzing trace with hash 661121583, now seen corresponding path program 1 times [2022-11-18 20:20:33,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:33,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560132440] [2022-11-18 20:20:33,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:33,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:20:33,912 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:20:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:20:34,006 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:20:34,006 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:20:34,007 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-11-18 20:20:34,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-11-18 20:20:34,012 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-18 20:20:34,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-11-18 20:20:34,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:20:34,013 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-18 20:20:34,019 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:20:34,020 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 20:20:34,080 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-18 20:20:34,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 178 transitions, 404 flow [2022-11-18 20:20:34,268 INFO L130 PetriNetUnfolder]: 147/1073 cut-off events. [2022-11-18 20:20:34,268 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-11-18 20:20:34,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1170 conditions, 1073 events. 147/1073 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 5599 event pairs, 2 based on Foata normal form. 0/933 useless extension candidates. Maximal degree in co-relation 625. Up to 32 conditions per place. [2022-11-18 20:20:34,277 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 178 transitions, 404 flow [2022-11-18 20:20:34,283 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 167 places, 178 transitions, 404 flow [2022-11-18 20:20:34,286 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:20:34,292 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;@8e6a334, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:20:34,292 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-18 20:20:34,311 INFO L130 PetriNetUnfolder]: 7/120 cut-off events. [2022-11-18 20:20:34,311 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:20:34,312 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:20:34,312 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] [2022-11-18 20:20:34,313 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:20:34,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:34,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1573793344, now seen corresponding path program 1 times [2022-11-18 20:20:34,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:34,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672759181] [2022-11-18 20:20:34,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:34,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:34,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:34,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:34,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:34,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672759181] [2022-11-18 20:20:34,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672759181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:20:34,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:20:34,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:20:34,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493302373] [2022-11-18 20:20:34,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:20:34,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:20:34,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:34,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:20:34,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:20:34,407 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 178 [2022-11-18 20:20:34,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 178 transitions, 404 flow. Second operand has 2 states, 2 states have (on average 154.0) internal successors, (308), 2 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:34,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:20:34,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 178 [2022-11-18 20:20:34,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:20:34,613 INFO L130 PetriNetUnfolder]: 58/978 cut-off events. [2022-11-18 20:20:34,613 INFO L131 PetriNetUnfolder]: For 212/212 co-relation queries the response was YES. [2022-11-18 20:20:34,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1148 conditions, 978 events. 58/978 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 5431 event pairs, 1 based on Foata normal form. 120/1008 useless extension candidates. Maximal degree in co-relation 602. Up to 73 conditions per place. [2022-11-18 20:20:34,619 INFO L137 encePairwiseOnDemand]: 167/178 looper letters, 12 selfloop transitions, 0 changer transitions 6/165 dead transitions. [2022-11-18 20:20:34,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 165 transitions, 402 flow [2022-11-18 20:20:34,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:20:34,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 20:20:34,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 329 transitions. [2022-11-18 20:20:34,621 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9241573033707865 [2022-11-18 20:20:34,621 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 329 transitions. [2022-11-18 20:20:34,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 329 transitions. [2022-11-18 20:20:34,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:20:34,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 329 transitions. [2022-11-18 20:20:34,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 164.5) internal successors, (329), 2 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:34,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:34,625 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:34,625 INFO L175 Difference]: Start difference. First operand has 167 places, 178 transitions, 404 flow. Second operand 2 states and 329 transitions. [2022-11-18 20:20:34,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 165 transitions, 402 flow [2022-11-18 20:20:34,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 165 transitions, 402 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:20:34,631 INFO L231 Difference]: Finished difference. Result has 166 places, 159 transitions, 366 flow [2022-11-18 20:20:34,632 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=366, PETRI_PLACES=166, PETRI_TRANSITIONS=159} [2022-11-18 20:20:34,638 INFO L288 CegarLoopForPetriNet]: 167 programPoint places, -1 predicate places. [2022-11-18 20:20:34,638 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 159 transitions, 366 flow [2022-11-18 20:20:34,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 154.0) internal successors, (308), 2 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:34,639 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:20:34,639 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] [2022-11-18 20:20:34,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:20:34,639 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:20:34,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:34,640 INFO L85 PathProgramCache]: Analyzing trace with hash -59116861, now seen corresponding path program 1 times [2022-11-18 20:20:34,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:34,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557360402] [2022-11-18 20:20:34,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:34,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:34,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:34,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:34,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:34,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557360402] [2022-11-18 20:20:34,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557360402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:20:34,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:20:34,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:20:34,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722492384] [2022-11-18 20:20:34,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:20:34,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:20:34,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:34,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:20:34,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:20:34,855 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 178 [2022-11-18 20:20:34,856 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 159 transitions, 366 flow. Second operand has 5 states, 5 states have (on average 115.6) internal successors, (578), 5 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:34,856 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:20:34,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 178 [2022-11-18 20:20:34,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:20:35,230 INFO L130 PetriNetUnfolder]: 58/979 cut-off events. [2022-11-18 20:20:35,231 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-11-18 20:20:35,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1455 conditions, 979 events. 58/979 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 5460 event pairs, 1 based on Foata normal form. 0/892 useless extension candidates. Maximal degree in co-relation 1448. Up to 368 conditions per place. [2022-11-18 20:20:35,240 INFO L137 encePairwiseOnDemand]: 171/178 looper letters, 54 selfloop transitions, 6 changer transitions 0/166 dead transitions. [2022-11-18 20:20:35,241 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 166 transitions, 500 flow [2022-11-18 20:20:35,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:20:35,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:20:35,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 621 transitions. [2022-11-18 20:20:35,244 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.697752808988764 [2022-11-18 20:20:35,244 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 621 transitions. [2022-11-18 20:20:35,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 621 transitions. [2022-11-18 20:20:35,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:20:35,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 621 transitions. [2022-11-18 20:20:35,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 124.2) internal successors, (621), 5 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:35,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:35,251 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:35,251 INFO L175 Difference]: Start difference. First operand has 166 places, 159 transitions, 366 flow. Second operand 5 states and 621 transitions. [2022-11-18 20:20:35,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 166 transitions, 500 flow [2022-11-18 20:20:35,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 166 transitions, 500 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:20:35,262 INFO L231 Difference]: Finished difference. Result has 167 places, 163 transitions, 405 flow [2022-11-18 20:20:35,263 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=405, PETRI_PLACES=167, PETRI_TRANSITIONS=163} [2022-11-18 20:20:35,265 INFO L288 CegarLoopForPetriNet]: 167 programPoint places, 0 predicate places. [2022-11-18 20:20:35,266 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 163 transitions, 405 flow [2022-11-18 20:20:35,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.6) internal successors, (578), 5 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:35,267 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:20:35,267 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, 1, 1] [2022-11-18 20:20:35,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:20:35,267 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:20:35,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:35,269 INFO L85 PathProgramCache]: Analyzing trace with hash 41367408, now seen corresponding path program 1 times [2022-11-18 20:20:35,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:35,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498678909] [2022-11-18 20:20:35,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:35,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:35,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:35,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:35,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498678909] [2022-11-18 20:20:35,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498678909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:20:35,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:20:35,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:20:35,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208346384] [2022-11-18 20:20:35,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:20:35,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:20:35,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:35,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:20:35,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:20:35,462 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 178 [2022-11-18 20:20:35,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 163 transitions, 405 flow. Second operand has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:35,464 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:20:35,464 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 178 [2022-11-18 20:20:35,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:20:36,514 INFO L130 PetriNetUnfolder]: 1082/4319 cut-off events. [2022-11-18 20:20:36,514 INFO L131 PetriNetUnfolder]: For 2462/6174 co-relation queries the response was YES. [2022-11-18 20:20:36,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6627 conditions, 4319 events. 1082/4319 cut-off events. For 2462/6174 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 38488 event pairs, 338 based on Foata normal form. 30/3459 useless extension candidates. Maximal degree in co-relation 6616. Up to 1471 conditions per place. [2022-11-18 20:20:36,565 INFO L137 encePairwiseOnDemand]: 172/178 looper letters, 29 selfloop transitions, 4 changer transitions 0/174 dead transitions. [2022-11-18 20:20:36,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 174 transitions, 518 flow [2022-11-18 20:20:36,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:20:36,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:20:36,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 607 transitions. [2022-11-18 20:20:36,568 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8525280898876404 [2022-11-18 20:20:36,569 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 607 transitions. [2022-11-18 20:20:36,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 607 transitions. [2022-11-18 20:20:36,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:20:36,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 607 transitions. [2022-11-18 20:20:36,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 151.75) internal successors, (607), 4 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:36,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:36,575 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:36,575 INFO L175 Difference]: Start difference. First operand has 167 places, 163 transitions, 405 flow. Second operand 4 states and 607 transitions. [2022-11-18 20:20:36,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 174 transitions, 518 flow [2022-11-18 20:20:36,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 174 transitions, 515 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:20:36,587 INFO L231 Difference]: Finished difference. Result has 170 places, 165 transitions, 425 flow [2022-11-18 20:20:36,588 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=425, PETRI_PLACES=170, PETRI_TRANSITIONS=165} [2022-11-18 20:20:36,592 INFO L288 CegarLoopForPetriNet]: 167 programPoint places, 3 predicate places. [2022-11-18 20:20:36,592 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 165 transitions, 425 flow [2022-11-18 20:20:36,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:36,593 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:20:36,593 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:36,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:20:36,594 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:20:36,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:36,596 INFO L85 PathProgramCache]: Analyzing trace with hash 332031846, now seen corresponding path program 1 times [2022-11-18 20:20:36,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:36,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227026923] [2022-11-18 20:20:36,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:36,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:36,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:37,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:37,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:37,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227026923] [2022-11-18 20:20:37,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227026923] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:37,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294468572] [2022-11-18 20:20:37,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:37,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:37,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d860818-1ce1-49b3-b7e4-c7d82d129534/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:37,320 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d860818-1ce1-49b3-b7e4-c7d82d129534/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:37,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d860818-1ce1-49b3-b7e4-c7d82d129534/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:20:37,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:37,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 20:20:37,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:37,738 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:20:37,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 20:20:37,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:20:38,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 20:20:38,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:38,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:20:38,273 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_59 (Array Int Int))) (< 1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#setPool~0#1.base| v_ArrVal_59) |c_~#iSet~0.base|) |c_~#iSet~0.offset|))) is different from false [2022-11-18 20:20:38,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-11-18 20:20:38,535 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-18 20:20:38,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-18 20:20:38,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:38,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294468572] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:20:38,541 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:20:38,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 30 [2022-11-18 20:20:38,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248610037] [2022-11-18 20:20:38,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:20:38,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 20:20:38,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:38,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 20:20:38,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=671, Unknown=7, NotChecked=54, Total=870 [2022-11-18 20:20:38,547 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 178 [2022-11-18 20:20:38,551 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 165 transitions, 425 flow. Second operand has 30 states, 30 states have (on average 87.0) internal successors, (2610), 30 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:38,551 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:20:38,551 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 178 [2022-11-18 20:20:38,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:20:45,385 INFO L130 PetriNetUnfolder]: 13437/30868 cut-off events. [2022-11-18 20:20:45,385 INFO L131 PetriNetUnfolder]: For 7068/7068 co-relation queries the response was YES. [2022-11-18 20:20:45,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58480 conditions, 30868 events. 13437/30868 cut-off events. For 7068/7068 co-relation queries the response was YES. Maximal size of possible extension queue 670. Compared 301391 event pairs, 1919 based on Foata normal form. 319/29785 useless extension candidates. Maximal degree in co-relation 58468. Up to 11201 conditions per place. [2022-11-18 20:20:45,755 INFO L137 encePairwiseOnDemand]: 154/178 looper letters, 238 selfloop transitions, 83 changer transitions 2/401 dead transitions. [2022-11-18 20:20:45,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 401 transitions, 1802 flow [2022-11-18 20:20:45,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-18 20:20:45,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-18 20:20:45,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 3672 transitions. [2022-11-18 20:20:45,766 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5157303370786517 [2022-11-18 20:20:45,766 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 3672 transitions. [2022-11-18 20:20:45,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 3672 transitions. [2022-11-18 20:20:45,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:20:45,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 3672 transitions. [2022-11-18 20:20:45,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 91.8) internal successors, (3672), 40 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:45,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 178.0) internal successors, (7298), 41 states have internal predecessors, (7298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:45,796 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 178.0) internal successors, (7298), 41 states have internal predecessors, (7298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:45,796 INFO L175 Difference]: Start difference. First operand has 170 places, 165 transitions, 425 flow. Second operand 40 states and 3672 transitions. [2022-11-18 20:20:45,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 401 transitions, 1802 flow [2022-11-18 20:20:45,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 401 transitions, 1774 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:20:45,814 INFO L231 Difference]: Finished difference. Result has 223 places, 250 transitions, 1005 flow [2022-11-18 20:20:45,815 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=1005, PETRI_PLACES=223, PETRI_TRANSITIONS=250} [2022-11-18 20:20:45,816 INFO L288 CegarLoopForPetriNet]: 167 programPoint places, 56 predicate places. [2022-11-18 20:20:45,816 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 250 transitions, 1005 flow [2022-11-18 20:20:45,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 87.0) internal successors, (2610), 30 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:45,819 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:20:45,820 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:45,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d860818-1ce1-49b3-b7e4-c7d82d129534/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:20:46,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d860818-1ce1-49b3-b7e4-c7d82d129534/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:46,025 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:20:46,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:46,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1957195296, now seen corresponding path program 1 times [2022-11-18 20:20:46,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:46,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724449580] [2022-11-18 20:20:46,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:46,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:46,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:20:46,084 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:20:46,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:20:46,113 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:20:46,116 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:20:46,117 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-11-18 20:20:46,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-11-18 20:20:46,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-11-18 20:20:46,118 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-11-18 20:20:46,118 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-11-18 20:20:46,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:20:46,118 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-18 20:20:46,120 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:20:46,121 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-18 20:20:46,161 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-11-18 20:20:46,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 198 transitions, 474 flow [2022-11-18 20:20:46,715 INFO L130 PetriNetUnfolder]: 639/3688 cut-off events. [2022-11-18 20:20:46,715 INFO L131 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2022-11-18 20:20:46,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4139 conditions, 3688 events. 639/3688 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 26713 event pairs, 64 based on Foata normal form. 0/3225 useless extension candidates. Maximal degree in co-relation 2153. Up to 192 conditions per place. [2022-11-18 20:20:46,742 INFO L82 GeneralOperation]: Start removeDead. Operand has 186 places, 198 transitions, 474 flow [2022-11-18 20:20:46,761 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 186 places, 198 transitions, 474 flow [2022-11-18 20:20:46,762 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:20:46,763 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;@8e6a334, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:20:46,764 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-18 20:20:46,773 INFO L130 PetriNetUnfolder]: 7/120 cut-off events. [2022-11-18 20:20:46,773 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:20:46,774 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:20:46,774 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] [2022-11-18 20:20:46,774 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-18 20:20:46,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:46,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1461139411, now seen corresponding path program 1 times [2022-11-18 20:20:46,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:46,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140541317] [2022-11-18 20:20:46,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:46,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:46,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:46,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:46,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:46,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140541317] [2022-11-18 20:20:46,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140541317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:20:46,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:20:46,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:20:46,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028002079] [2022-11-18 20:20:46,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:20:46,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:20:46,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:46,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:20:46,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:20:46,826 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 198 [2022-11-18 20:20:46,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 198 transitions, 474 flow. Second operand has 2 states, 2 states have (on average 166.0) internal successors, (332), 2 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:46,827 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:20:46,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 198 [2022-11-18 20:20:46,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:20:47,563 INFO L130 PetriNetUnfolder]: 337/3374 cut-off events. [2022-11-18 20:20:47,563 INFO L131 PetriNetUnfolder]: For 1217/1217 co-relation queries the response was YES. [2022-11-18 20:20:47,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4225 conditions, 3374 events. 337/3374 cut-off events. For 1217/1217 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 26260 event pairs, 32 based on Foata normal form. 500/3571 useless extension candidates. Maximal degree in co-relation 2153. Up to 400 conditions per place. [2022-11-18 20:20:47,588 INFO L137 encePairwiseOnDemand]: 186/198 looper letters, 18 selfloop transitions, 0 changer transitions 6/183 dead transitions. [2022-11-18 20:20:47,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 183 transitions, 480 flow [2022-11-18 20:20:47,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:20:47,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 20:20:47,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 360 transitions. [2022-11-18 20:20:47,591 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9090909090909091 [2022-11-18 20:20:47,592 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 360 transitions. [2022-11-18 20:20:47,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 360 transitions. [2022-11-18 20:20:47,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:20:47,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 360 transitions. [2022-11-18 20:20:47,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 180.0) internal successors, (360), 2 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:47,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:47,595 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:47,595 INFO L175 Difference]: Start difference. First operand has 186 places, 198 transitions, 474 flow. Second operand 2 states and 360 transitions. [2022-11-18 20:20:47,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 183 transitions, 480 flow [2022-11-18 20:20:47,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 183 transitions, 480 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:20:47,601 INFO L231 Difference]: Finished difference. Result has 184 places, 177 transitions, 432 flow [2022-11-18 20:20:47,602 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=432, PETRI_PLACES=184, PETRI_TRANSITIONS=177} [2022-11-18 20:20:47,604 INFO L288 CegarLoopForPetriNet]: 186 programPoint places, -2 predicate places. [2022-11-18 20:20:47,604 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 177 transitions, 432 flow [2022-11-18 20:20:47,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 166.0) internal successors, (332), 2 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:47,605 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:20:47,605 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] [2022-11-18 20:20:47,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:20:47,605 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-18 20:20:47,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:47,606 INFO L85 PathProgramCache]: Analyzing trace with hash -333090730, now seen corresponding path program 1 times [2022-11-18 20:20:47,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:47,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986232021] [2022-11-18 20:20:47,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:47,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:47,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:47,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:47,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:47,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986232021] [2022-11-18 20:20:47,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986232021] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:20:47,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:20:47,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:20:47,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216355112] [2022-11-18 20:20:47,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:20:47,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:20:47,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:47,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:20:47,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:20:47,725 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 198 [2022-11-18 20:20:47,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 177 transitions, 432 flow. Second operand has 5 states, 5 states have (on average 127.6) internal successors, (638), 5 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:47,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:20:47,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 198 [2022-11-18 20:20:47,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:20:48,460 INFO L130 PetriNetUnfolder]: 337/3371 cut-off events. [2022-11-18 20:20:48,461 INFO L131 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2022-11-18 20:20:48,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5208 conditions, 3371 events. 337/3371 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 26313 event pairs, 32 based on Foata normal form. 0/3072 useless extension candidates. Maximal degree in co-relation 5199. Up to 1375 conditions per place. [2022-11-18 20:20:48,490 INFO L137 encePairwiseOnDemand]: 191/198 looper letters, 60 selfloop transitions, 6 changer transitions 0/184 dead transitions. [2022-11-18 20:20:48,490 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 184 transitions, 578 flow [2022-11-18 20:20:48,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:20:48,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:20:48,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 687 transitions. [2022-11-18 20:20:48,493 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.693939393939394 [2022-11-18 20:20:48,494 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 687 transitions. [2022-11-18 20:20:48,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 687 transitions. [2022-11-18 20:20:48,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:20:48,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 687 transitions. [2022-11-18 20:20:48,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 137.4) internal successors, (687), 5 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:48,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:48,500 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:48,500 INFO L175 Difference]: Start difference. First operand has 184 places, 177 transitions, 432 flow. Second operand 5 states and 687 transitions. [2022-11-18 20:20:48,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 184 transitions, 578 flow [2022-11-18 20:20:48,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 184 transitions, 578 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:20:48,506 INFO L231 Difference]: Finished difference. Result has 185 places, 181 transitions, 471 flow [2022-11-18 20:20:48,506 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=471, PETRI_PLACES=185, PETRI_TRANSITIONS=181} [2022-11-18 20:20:48,508 INFO L288 CegarLoopForPetriNet]: 186 programPoint places, -1 predicate places. [2022-11-18 20:20:48,508 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 181 transitions, 471 flow [2022-11-18 20:20:48,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.6) internal successors, (638), 5 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:48,509 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:20:48,509 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, 1, 1] [2022-11-18 20:20:48,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:20:48,509 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-18 20:20:48,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:48,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1840418753, now seen corresponding path program 1 times [2022-11-18 20:20:48,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:48,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080822717] [2022-11-18 20:20:48,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:48,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:48,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:48,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:48,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080822717] [2022-11-18 20:20:48,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080822717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:20:48,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:20:48,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:20:48,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128447541] [2022-11-18 20:20:48,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:20:48,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:20:48,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:48,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:20:48,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:20:48,595 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 198 [2022-11-18 20:20:48,596 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 181 transitions, 471 flow. Second operand has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:48,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:20:48,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 198 [2022-11-18 20:20:48,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:20:59,329 INFO L130 PetriNetUnfolder]: 29825/65949 cut-off events. [2022-11-18 20:20:59,330 INFO L131 PetriNetUnfolder]: For 46029/340598 co-relation queries the response was YES. [2022-11-18 20:20:59,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118875 conditions, 65949 events. 29825/65949 cut-off events. For 46029/340598 co-relation queries the response was YES. Maximal size of possible extension queue 3561. Compared 748881 event pairs, 11828 based on Foata normal form. 168/46660 useless extension candidates. Maximal degree in co-relation 118862. Up to 37273 conditions per place. [2022-11-18 20:21:00,391 INFO L137 encePairwiseOnDemand]: 190/198 looper letters, 44 selfloop transitions, 5 changer transitions 0/198 dead transitions. [2022-11-18 20:21:00,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 198 transitions, 648 flow [2022-11-18 20:21:00,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:21:00,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:21:00,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 656 transitions. [2022-11-18 20:21:00,394 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8282828282828283 [2022-11-18 20:21:00,394 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 656 transitions. [2022-11-18 20:21:00,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 656 transitions. [2022-11-18 20:21:00,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:21:00,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 656 transitions. [2022-11-18 20:21:00,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:00,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 198.0) internal successors, (990), 5 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:00,399 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 198.0) internal successors, (990), 5 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:00,399 INFO L175 Difference]: Start difference. First operand has 185 places, 181 transitions, 471 flow. Second operand 4 states and 656 transitions. [2022-11-18 20:21:00,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 198 transitions, 648 flow [2022-11-18 20:21:00,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 198 transitions, 645 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:21:00,781 INFO L231 Difference]: Finished difference. Result has 188 places, 184 transitions, 500 flow [2022-11-18 20:21:00,782 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=500, PETRI_PLACES=188, PETRI_TRANSITIONS=184} [2022-11-18 20:21:00,783 INFO L288 CegarLoopForPetriNet]: 186 programPoint places, 2 predicate places. [2022-11-18 20:21:00,783 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 184 transitions, 500 flow [2022-11-18 20:21:00,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:00,784 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:21:00,784 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:21:00,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:21:00,784 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-18 20:21:00,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:00,785 INFO L85 PathProgramCache]: Analyzing trace with hash -38066199, now seen corresponding path program 1 times [2022-11-18 20:21:00,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:00,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418964704] [2022-11-18 20:21:00,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:00,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:01,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:21:01,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:01,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418964704] [2022-11-18 20:21:01,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418964704] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:21:01,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531217109] [2022-11-18 20:21:01,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:01,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:01,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d860818-1ce1-49b3-b7e4-c7d82d129534/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:21:01,258 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d860818-1ce1-49b3-b7e4-c7d82d129534/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:21:01,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d860818-1ce1-49b3-b7e4-c7d82d129534/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:21:01,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:01,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 20:21:01,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:21:01,556 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:21:01,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 20:21:01,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:21:01,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 20:21:01,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:21:01,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:21:01,968 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_108 (Array Int Int))) (< (+ |c_ULTIMATE.start_main_~i~0#1| 1) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#setPool~0#1.base| v_ArrVal_108) |c_~#iSet~0.base|) |c_~#iSet~0.offset|))) is different from false [2022-11-18 20:21:01,995 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_108 (Array Int Int))) (< 1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#setPool~0#1.base| v_ArrVal_108) |c_~#iSet~0.base|) |c_~#iSet~0.offset|))) is different from false [2022-11-18 20:21:02,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-11-18 20:21:02,232 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-18 20:21:02,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-18 20:21:02,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-18 20:21:02,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531217109] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:21:02,239 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:21:02,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 30 [2022-11-18 20:21:02,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068296434] [2022-11-18 20:21:02,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:21:02,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 20:21:02,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:02,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 20:21:02,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=637, Unknown=2, NotChecked=106, Total=870 [2022-11-18 20:21:02,244 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 198 [2022-11-18 20:21:02,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 184 transitions, 500 flow. Second operand has 30 states, 30 states have (on average 95.0) internal successors, (2850), 30 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:21:02,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:21:02,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 198 [2022-11-18 20:21:02,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand