./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-8.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_4f9cbeb2-809a-45a8-80bb-644cd72940a7/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9cbeb2-809a-45a8-80bb-644cd72940a7/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9cbeb2-809a-45a8-80bb-644cd72940a7/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9cbeb2-809a-45a8-80bb-644cd72940a7/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-8.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9cbeb2-809a-45a8-80bb-644cd72940a7/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9cbeb2-809a-45a8-80bb-644cd72940a7/bin/utaipan-g80aRyZoba --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f02fd31f03f03300713de36d3982e392122375115e7a5509580eaaa38dd9026f --- 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-b5237d8 [2022-11-22 01:12:10,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:12:10,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:12:10,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:12:10,363 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:12:10,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:12:10,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:12:10,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:12:10,375 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:12:10,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:12:10,382 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:12:10,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:12:10,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:12:10,389 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:12:10,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:12:10,392 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:12:10,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:12:10,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:12:10,395 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:12:10,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:12:10,398 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:12:10,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:12:10,402 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:12:10,403 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:12:10,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:12:10,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:12:10,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:12:10,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:12:10,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:12:10,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:12:10,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:12:10,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:12:10,422 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:12:10,423 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:12:10,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:12:10,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:12:10,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:12:10,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:12:10,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:12:10,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:12:10,430 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:12:10,431 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9cbeb2-809a-45a8-80bb-644cd72940a7/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 01:12:10,468 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:12:10,471 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:12:10,472 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:12:10,472 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:12:10,473 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:12:10,473 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:12:10,473 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:12:10,474 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:12:10,474 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:12:10,474 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:12:10,475 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:12:10,475 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:12:10,476 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:12:10,476 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:12:10,476 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:12:10,476 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:12:10,476 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:12:10,477 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:12:10,477 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:12:10,478 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:12:10,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:12:10,478 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:12:10,478 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:12:10,478 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:12:10,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:12:10,479 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:12:10,479 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:12:10,479 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:12:10,479 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:12:10,480 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:12:10,480 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:12:10,480 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:12:10,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:12:10,481 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:12:10,481 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:12:10,481 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:12:10,481 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:12:10,482 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:12:10,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:12:10,482 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:12:10,482 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:12:10,482 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_4f9cbeb2-809a-45a8-80bb-644cd72940a7/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9cbeb2-809a-45a8-80bb-644cd72940a7/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f02fd31f03f03300713de36d3982e392122375115e7a5509580eaaa38dd9026f [2022-11-22 01:12:10,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:12:10,804 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:12:10,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:12:10,808 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:12:10,809 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:12:10,810 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9cbeb2-809a-45a8-80bb-644cd72940a7/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/weaver/parallel-ticket-8.wvr.c [2022-11-22 01:12:13,985 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:12:14,282 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:12:14,282 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9cbeb2-809a-45a8-80bb-644cd72940a7/sv-benchmarks/c/weaver/parallel-ticket-8.wvr.c [2022-11-22 01:12:14,293 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9cbeb2-809a-45a8-80bb-644cd72940a7/bin/utaipan-g80aRyZoba/data/4f426597b/77fab7d4c05649478065187de560eaed/FLAGe3b08c8a9 [2022-11-22 01:12:14,308 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9cbeb2-809a-45a8-80bb-644cd72940a7/bin/utaipan-g80aRyZoba/data/4f426597b/77fab7d4c05649478065187de560eaed [2022-11-22 01:12:14,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:12:14,312 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:12:14,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:12:14,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:12:14,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:12:14,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:12:14" (1/1) ... [2022-11-22 01:12:14,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5159827e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:12:14, skipping insertion in model container [2022-11-22 01:12:14,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:12:14" (1/1) ... [2022-11-22 01:12:14,338 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:12:14,387 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:12:14,567 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9cbeb2-809a-45a8-80bb-644cd72940a7/sv-benchmarks/c/weaver/parallel-ticket-8.wvr.c[5274,5287] [2022-11-22 01:12:14,573 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:12:14,583 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:12:14,641 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9cbeb2-809a-45a8-80bb-644cd72940a7/sv-benchmarks/c/weaver/parallel-ticket-8.wvr.c[5274,5287] [2022-11-22 01:12:14,642 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:12:14,656 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:12:14,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:12:14 WrapperNode [2022-11-22 01:12:14,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:12:14,658 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:12:14,658 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:12:14,658 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:12:14,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:12:14" (1/1) ... [2022-11-22 01:12:14,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:12:14" (1/1) ... [2022-11-22 01:12:14,726 INFO L138 Inliner]: procedures = 27, calls = 130, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 358 [2022-11-22 01:12:14,738 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:12:14,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:12:14,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:12:14,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:12:14,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:12:14" (1/1) ... [2022-11-22 01:12:14,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:12:14" (1/1) ... [2022-11-22 01:12:14,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:12:14" (1/1) ... [2022-11-22 01:12:14,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:12:14" (1/1) ... [2022-11-22 01:12:14,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:12:14" (1/1) ... [2022-11-22 01:12:14,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:12:14" (1/1) ... [2022-11-22 01:12:14,786 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:12:14" (1/1) ... [2022-11-22 01:12:14,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:12:14" (1/1) ... [2022-11-22 01:12:14,792 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:12:14,793 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:12:14,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:12:14,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:12:14,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:12:14" (1/1) ... [2022-11-22 01:12:14,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:12:14,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9cbeb2-809a-45a8-80bb-644cd72940a7/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:12:14,844 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9cbeb2-809a-45a8-80bb-644cd72940a7/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:12:14,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9cbeb2-809a-45a8-80bb-644cd72940a7/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:12:14,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:12:14,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:12:14,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:12:14,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:12:14,889 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-22 01:12:14,889 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-22 01:12:14,890 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-22 01:12:14,890 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-22 01:12:14,890 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-22 01:12:14,890 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-22 01:12:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-22 01:12:14,891 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-22 01:12:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:12:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-11-22 01:12:14,891 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-11-22 01:12:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-11-22 01:12:14,892 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-11-22 01:12:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2022-11-22 01:12:14,892 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2022-11-22 01:12:14,893 INFO L130 BoogieDeclarations]: Found specification of procedure thread8 [2022-11-22 01:12:14,893 INFO L138 BoogieDeclarations]: Found implementation of procedure thread8 [2022-11-22 01:12:14,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-22 01:12:14,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-22 01:12:14,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:12:14,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:12:14,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:12:14,896 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-22 01:12:15,120 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:12:15,123 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:12:15,651 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:12:15,761 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:12:15,761 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 01:12:15,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:12:15 BoogieIcfgContainer [2022-11-22 01:12:15,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:12:15,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:12:15,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:12:15,770 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:12:15,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:12:14" (1/3) ... [2022-11-22 01:12:15,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14158802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:12:15, skipping insertion in model container [2022-11-22 01:12:15,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:12:14" (2/3) ... [2022-11-22 01:12:15,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14158802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:12:15, skipping insertion in model container [2022-11-22 01:12:15,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:12:15" (3/3) ... [2022-11-22 01:12:15,773 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-8.wvr.c [2022-11-22 01:12:15,782 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-22 01:12:15,794 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:12:15,794 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 01:12:15,794 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-22 01:12:15,898 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-22 01:12:15,936 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 01:12:15,952 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 257 places, 234 transitions, 532 flow [2022-11-22 01:12:15,955 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 257 places, 234 transitions, 532 flow [2022-11-22 01:12:15,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 257 places, 234 transitions, 532 flow [2022-11-22 01:12:16,122 INFO L130 PetriNetUnfolder]: 2/226 cut-off events. [2022-11-22 01:12:16,122 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-22 01:12:16,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 226 events. 2/226 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 105 event pairs, 0 based on Foata normal form. 0/223 useless extension candidates. Maximal degree in co-relation 177. Up to 2 conditions per place. [2022-11-22 01:12:16,133 INFO L119 LiptonReduction]: Number of co-enabled transitions 5502 [2022-11-22 01:12:36,549 INFO L134 LiptonReduction]: Checked pairs total: 13905 [2022-11-22 01:12:36,549 INFO L136 LiptonReduction]: Total number of compositions: 182 [2022-11-22 01:12:36,558 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84 places, 59 transitions, 182 flow [2022-11-22 01:12:39,233 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 32802 states, 32801 states have (on average 5.667327215633669) internal successors, (185894), 32801 states have internal predecessors, (185894), 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) [2022-11-22 01:12:39,277 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:12:39,301 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=FINITE_AUTOMATA, 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;@7e396009, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:12:39,309 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-22 01:12:39,442 INFO L276 IsEmpty]: Start isEmpty. Operand has 32802 states, 32801 states have (on average 5.667327215633669) internal successors, (185894), 32801 states have internal predecessors, (185894), 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) [2022-11-22 01:12:40,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-22 01:12:40,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:12:40,041 INFO L195 NwaCegarLoop]: 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] [2022-11-22 01:12:40,042 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-11-22 01:12:40,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:12:40,056 INFO L85 PathProgramCache]: Analyzing trace with hash -635513452, now seen corresponding path program 1 times [2022-11-22 01:12:40,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:12:40,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059284115] [2022-11-22 01:12:40,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:12:40,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:12:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:12:41,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:12:41,775 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:12:41,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059284115] [2022-11-22 01:12:41,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059284115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:12:41,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:12:41,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 01:12:41,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212018479] [2022-11-22 01:12:41,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:12:41,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 01:12:41,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:12:41,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 01:12:41,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:12:41,877 INFO L87 Difference]: Start difference. First operand has 32802 states, 32801 states have (on average 5.667327215633669) internal successors, (185894), 32801 states have internal predecessors, (185894), 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) Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 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) [2022-11-22 01:12:44,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:12:44,602 INFO L93 Difference]: Finished difference Result 99168 states and 546237 transitions. [2022-11-22 01:12:44,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 01:12:44,604 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 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) Word has length 50 [2022-11-22 01:12:44,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:12:45,950 INFO L225 Difference]: With dead ends: 99168 [2022-11-22 01:12:45,950 INFO L226 Difference]: Without dead ends: 99168 [2022-11-22 01:12:45,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-22 01:12:45,954 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 147 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:12:45,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 0 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 01:12:46,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99168 states. [2022-11-22 01:12:49,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99168 to 59108. [2022-11-22 01:12:50,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59108 states, 59107 states have (on average 5.616932004669498) internal successors, (332000), 59107 states have internal predecessors, (332000), 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) [2022-11-22 01:12:50,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59108 states to 59108 states and 332000 transitions. [2022-11-22 01:12:50,804 INFO L78 Accepts]: Start accepts. Automaton has 59108 states and 332000 transitions. Word has length 50 [2022-11-22 01:12:50,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:12:50,804 INFO L495 AbstractCegarLoop]: Abstraction has 59108 states and 332000 transitions. [2022-11-22 01:12:50,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 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) [2022-11-22 01:12:50,805 INFO L276 IsEmpty]: Start isEmpty. Operand 59108 states and 332000 transitions. [2022-11-22 01:12:51,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-22 01:12:51,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:12:51,780 INFO L195 NwaCegarLoop]: 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] [2022-11-22 01:12:51,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:12:51,780 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-11-22 01:12:51,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:12:51,783 INFO L85 PathProgramCache]: Analyzing trace with hash 2141708642, now seen corresponding path program 2 times [2022-11-22 01:12:51,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:12:51,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159772822] [2022-11-22 01:12:51,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:12:51,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:12:52,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:12:52,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:12:52,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:12:52,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159772822] [2022-11-22 01:12:52,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159772822] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:12:52,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:12:52,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 01:12:52,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059548062] [2022-11-22 01:12:52,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:12:52,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 01:12:52,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:12:52,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 01:12:52,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:12:52,673 INFO L87 Difference]: Start difference. First operand 59108 states and 332000 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 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) [2022-11-22 01:12:55,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:12:55,745 INFO L93 Difference]: Finished difference Result 136130 states and 740095 transitions. [2022-11-22 01:12:55,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-22 01:12:55,746 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 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) Word has length 50 [2022-11-22 01:12:55,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:12:56,908 INFO L225 Difference]: With dead ends: 136130 [2022-11-22 01:12:56,909 INFO L226 Difference]: Without dead ends: 136130 [2022-11-22 01:12:56,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-22 01:12:56,910 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 157 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:12:56,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 0 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 01:12:57,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136130 states. [2022-11-22 01:13:02,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136130 to 86884. [2022-11-22 01:13:02,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86884 states, 86883 states have (on average 5.562676242763256) internal successors, (483302), 86883 states have internal predecessors, (483302), 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) [2022-11-22 01:13:03,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86884 states to 86884 states and 483302 transitions. [2022-11-22 01:13:03,045 INFO L78 Accepts]: Start accepts. Automaton has 86884 states and 483302 transitions. Word has length 50 [2022-11-22 01:13:03,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:13:03,046 INFO L495 AbstractCegarLoop]: Abstraction has 86884 states and 483302 transitions. [2022-11-22 01:13:03,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 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) [2022-11-22 01:13:03,046 INFO L276 IsEmpty]: Start isEmpty. Operand 86884 states and 483302 transitions. [2022-11-22 01:13:03,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-22 01:13:03,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:13:03,320 INFO L195 NwaCegarLoop]: 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] [2022-11-22 01:13:03,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:13:03,321 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-11-22 01:13:03,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:13:03,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1643114078, now seen corresponding path program 3 times [2022-11-22 01:13:03,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:13:03,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468921659] [2022-11-22 01:13:03,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:13:03,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:13:04,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:13:04,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:13:04,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:13:04,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468921659] [2022-11-22 01:13:04,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468921659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:13:04,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:13:04,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-22 01:13:04,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716188976] [2022-11-22 01:13:04,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:13:04,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-22 01:13:04,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:13:04,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-22 01:13:04,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-22 01:13:04,967 INFO L87 Difference]: Start difference. First operand 86884 states and 483302 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 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) [2022-11-22 01:13:07,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:13:07,976 INFO L93 Difference]: Finished difference Result 152352 states and 806017 transitions. [2022-11-22 01:13:07,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-22 01:13:07,977 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 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) Word has length 50 [2022-11-22 01:13:07,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:13:09,893 INFO L225 Difference]: With dead ends: 152352 [2022-11-22 01:13:09,894 INFO L226 Difference]: Without dead ends: 152352 [2022-11-22 01:13:09,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=225, Unknown=0, NotChecked=0, Total=342 [2022-11-22 01:13:09,895 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 258 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:13:09,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 0 Invalid, 1513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-22 01:13:10,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152352 states. [2022-11-22 01:13:15,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152352 to 116582. [2022-11-22 01:13:15,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116582 states, 116581 states have (on average 5.395313129926832) internal successors, (628991), 116581 states have internal predecessors, (628991), 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) [2022-11-22 01:13:17,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116582 states to 116582 states and 628991 transitions. [2022-11-22 01:13:17,226 INFO L78 Accepts]: Start accepts. Automaton has 116582 states and 628991 transitions. Word has length 50 [2022-11-22 01:13:17,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:13:17,227 INFO L495 AbstractCegarLoop]: Abstraction has 116582 states and 628991 transitions. [2022-11-22 01:13:17,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 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) [2022-11-22 01:13:17,228 INFO L276 IsEmpty]: Start isEmpty. Operand 116582 states and 628991 transitions. [2022-11-22 01:13:17,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-22 01:13:17,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:13:17,733 INFO L195 NwaCegarLoop]: 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] [2022-11-22 01:13:17,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:13:17,734 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-11-22 01:13:17,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:13:17,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1223138688, now seen corresponding path program 4 times [2022-11-22 01:13:17,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:13:17,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608716220] [2022-11-22 01:13:17,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:13:17,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:13:17,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:13:18,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:13:18,526 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:13:18,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608716220] [2022-11-22 01:13:18,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608716220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:13:18,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:13:18,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-22 01:13:18,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224493670] [2022-11-22 01:13:18,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:13:18,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 01:13:18,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:13:18,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 01:13:18,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-22 01:13:18,529 INFO L87 Difference]: Start difference. First operand 116582 states and 628991 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 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) [2022-11-22 01:13:22,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:13:22,467 INFO L93 Difference]: Finished difference Result 190624 states and 991693 transitions. [2022-11-22 01:13:22,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 01:13:22,467 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 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) Word has length 50 [2022-11-22 01:13:22,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:13:24,239 INFO L225 Difference]: With dead ends: 190624 [2022-11-22 01:13:24,240 INFO L226 Difference]: Without dead ends: 190624 [2022-11-22 01:13:24,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-11-22 01:13:24,241 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 203 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 01:13:24,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 0 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 01:13:25,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190624 states.