./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 38b53e6a 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_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 --- 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-38b53e6 [2022-11-25 15:49:10,633 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:49:10,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:49:10,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:49:10,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:49:10,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:49:10,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:49:10,661 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:49:10,663 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:49:10,664 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:49:10,665 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:49:10,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:49:10,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:49:10,668 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:49:10,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:49:10,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:49:10,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:49:10,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:49:10,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:49:10,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:49:10,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:49:10,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:49:10,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:49:10,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:49:10,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:49:10,698 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:49:10,699 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:49:10,700 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:49:10,700 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:49:10,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:49:10,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:49:10,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:49:10,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:49:10,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:49:10,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:49:10,706 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:49:10,707 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:49:10,707 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:49:10,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:49:10,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:49:10,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:49:10,710 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-25 15:49:10,732 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:49:10,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:49:10,732 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:49:10,733 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:49:10,733 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:49:10,734 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:49:10,734 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:49:10,735 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:49:10,735 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:49:10,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:49:10,735 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:49:10,736 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 15:49:10,736 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:49:10,736 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:49:10,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:49:10,737 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 15:49:10,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:49:10,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 15:49:10,737 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-25 15:49:10,738 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:49:10,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 15:49:10,738 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:49:10,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 15:49:10,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:49:10,739 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:49:10,739 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:49:10,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:49:10,740 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:49:10,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:49:10,740 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 15:49:10,740 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:49:10,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 15:49:10,741 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:49:10,741 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 15:49:10,741 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:49:10,741 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:49:10,742 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 [2022-11-25 15:49:11,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:49:11,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:49:11,066 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:49:11,068 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:49:11,068 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:49:11,070 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2022-11-25 15:49:14,116 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:49:14,514 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:49:14,514 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2022-11-25 15:49:14,538 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/data/0ef768a7c/08b91a2b226e4664bff9409282e003b2/FLAG831285328 [2022-11-25 15:49:14,552 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/data/0ef768a7c/08b91a2b226e4664bff9409282e003b2 [2022-11-25 15:49:14,555 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:49:14,557 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:49:14,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:49:14,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:49:14,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:49:14,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:49:14" (1/1) ... [2022-11-25 15:49:14,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bea9d58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:49:14, skipping insertion in model container [2022-11-25 15:49:14,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:49:14" (1/1) ... [2022-11-25 15:49:14,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:49:14,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:49:15,183 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:49:15,204 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:49:15,241 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:49:15,300 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:49:15,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:49:15 WrapperNode [2022-11-25 15:49:15,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:49:15,301 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:49:15,301 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:49:15,302 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:49:15,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:49:15" (1/1) ... [2022-11-25 15:49:15,322 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:49:15" (1/1) ... [2022-11-25 15:49:15,346 INFO L138 Inliner]: procedures = 262, calls = 13, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2022-11-25 15:49:15,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:49:15,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:49:15,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:49:15,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:49:15,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:49:15" (1/1) ... [2022-11-25 15:49:15,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:49:15" (1/1) ... [2022-11-25 15:49:15,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:49:15" (1/1) ... [2022-11-25 15:49:15,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:49:15" (1/1) ... [2022-11-25 15:49:15,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:49:15" (1/1) ... [2022-11-25 15:49:15,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:49:15" (1/1) ... [2022-11-25 15:49:15,379 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:49:15" (1/1) ... [2022-11-25 15:49:15,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:49:15" (1/1) ... [2022-11-25 15:49:15,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:49:15,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:49:15,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:49:15,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:49:15,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:49:15" (1/1) ... [2022-11-25 15:49:15,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:49:15,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:49:15,420 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:49:15,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:49:15,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 15:49:15,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 15:49:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 15:49:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 15:49:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 15:49:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:49:15,472 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-25 15:49:15,472 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-25 15:49:15,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:49:15,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:49:15,474 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 15:49:15,641 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:49:15,643 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:49:15,887 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:49:15,895 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:49:15,895 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-25 15:49:15,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:49:15 BoogieIcfgContainer [2022-11-25 15:49:15,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:49:15,900 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:49:15,900 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:49:15,904 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:49:15,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:49:14" (1/3) ... [2022-11-25 15:49:15,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@489c0a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:49:15, skipping insertion in model container [2022-11-25 15:49:15,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:49:15" (2/3) ... [2022-11-25 15:49:15,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@489c0a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:49:15, skipping insertion in model container [2022-11-25 15:49:15,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:49:15" (3/3) ... [2022-11-25 15:49:15,907 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_02-funloop_norace.i [2022-11-25 15:49:15,916 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 15:49:15,927 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:49:15,927 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-25 15:49:15,928 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 15:49:16,013 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 15:49:16,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 106 transitions, 217 flow [2022-11-25 15:49:16,107 INFO L130 PetriNetUnfolder]: 6/105 cut-off events. [2022-11-25 15:49:16,107 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:49:16,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 105 events. 6/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 132 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 80. Up to 2 conditions per place. [2022-11-25 15:49:16,114 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 106 transitions, 217 flow [2022-11-25 15:49:16,119 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 105 transitions, 213 flow [2022-11-25 15:49:16,122 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 15:49:16,140 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 105 transitions, 213 flow [2022-11-25 15:49:16,143 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 103 places, 105 transitions, 213 flow [2022-11-25 15:49:16,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 105 transitions, 213 flow [2022-11-25 15:49:16,196 INFO L130 PetriNetUnfolder]: 6/105 cut-off events. [2022-11-25 15:49:16,196 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:49:16,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 105 events. 6/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 132 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 80. Up to 2 conditions per place. [2022-11-25 15:49:16,200 INFO L119 LiptonReduction]: Number of co-enabled transitions 3192 [2022-11-25 15:49:18,359 INFO L134 LiptonReduction]: Checked pairs total: 9380 [2022-11-25 15:49:18,359 INFO L136 LiptonReduction]: Total number of compositions: 68 [2022-11-25 15:49:18,375 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:49:18,382 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;@7dbe43be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:49:18,383 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-25 15:49:18,391 INFO L130 PetriNetUnfolder]: 1/20 cut-off events. [2022-11-25 15:49:18,391 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:49:18,391 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:49:18,392 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:49:18,392 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:49:18,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:49:18,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1304013538, now seen corresponding path program 1 times [2022-11-25 15:49:18,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:49:18,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126883078] [2022-11-25 15:49:18,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:49:18,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:49:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:49:18,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:49:18,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:49:18,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126883078] [2022-11-25 15:49:18,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126883078] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:49:18,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:49:18,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:49:18,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844007120] [2022-11-25 15:49:18,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:49:18,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:49:18,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:49:18,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:49:18,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:49:18,809 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 174 [2022-11-25 15:49:18,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 40 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 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) [2022-11-25 15:49:18,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:49:18,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 174 [2022-11-25 15:49:18,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:49:18,907 INFO L130 PetriNetUnfolder]: 66/249 cut-off events. [2022-11-25 15:49:18,907 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:49:18,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 387 conditions, 249 events. 66/249 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1078 event pairs, 49 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 372. Up to 133 conditions per place. [2022-11-25 15:49:18,911 INFO L137 encePairwiseOnDemand]: 171/174 looper letters, 19 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2022-11-25 15:49:18,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 127 flow [2022-11-25 15:49:18,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:49:18,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:49:18,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 316 transitions. [2022-11-25 15:49:18,926 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6053639846743295 [2022-11-25 15:49:18,926 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 316 transitions. [2022-11-25 15:49:18,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 316 transitions. [2022-11-25 15:49:18,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:49:18,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 316 transitions. [2022-11-25 15:49:18,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 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) [2022-11-25 15:49:18,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 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) [2022-11-25 15:49:18,942 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 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) [2022-11-25 15:49:18,944 INFO L175 Difference]: Start difference. First operand has 41 places, 40 transitions, 83 flow. Second operand 3 states and 316 transitions. [2022-11-25 15:49:18,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 127 flow [2022-11-25 15:49:18,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 126 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:49:18,950 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 94 flow [2022-11-25 15:49:18,952 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2022-11-25 15:49:18,955 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2022-11-25 15:49:18,956 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 94 flow [2022-11-25 15:49:18,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 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) [2022-11-25 15:49:18,956 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:49:18,957 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:49:18,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 15:49:18,957 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:49:18,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:49:18,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1353746404, now seen corresponding path program 1 times [2022-11-25 15:49:18,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:49:18,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656441900] [2022-11-25 15:49:18,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:49:18,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:49:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:49:19,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:49:19,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:49:19,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656441900] [2022-11-25 15:49:19,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656441900] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:49:19,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203316950] [2022-11-25 15:49:19,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:49:19,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:49:19,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:49:19,048 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:49:19,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 15:49:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:49:19,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 15:49:19,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:49:19,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:49:19,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:49:19,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:49:19,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203316950] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:49:19,203 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:49:19,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-25 15:49:19,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776604384] [2022-11-25 15:49:19,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:49:19,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:49:19,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:49:19,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:49:19,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:49:19,230 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 174 [2022-11-25 15:49:19,232 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 94 flow. Second operand has 7 states, 7 states have (on average 98.71428571428571) internal successors, (691), 7 states have internal predecessors, (691), 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) [2022-11-25 15:49:19,232 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:49:19,232 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 174 [2022-11-25 15:49:19,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:49:19,325 INFO L130 PetriNetUnfolder]: 66/252 cut-off events. [2022-11-25 15:49:19,326 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:49:19,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 252 events. 66/252 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1076 event pairs, 49 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 391. Up to 133 conditions per place. [2022-11-25 15:49:19,328 INFO L137 encePairwiseOnDemand]: 171/174 looper letters, 19 selfloop transitions, 5 changer transitions 0/44 dead transitions. [2022-11-25 15:49:19,329 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 44 transitions, 154 flow [2022-11-25 15:49:19,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:49:19,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 15:49:19,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 609 transitions. [2022-11-25 15:49:19,333 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2022-11-25 15:49:19,333 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 609 transitions. [2022-11-25 15:49:19,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 609 transitions. [2022-11-25 15:49:19,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:49:19,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 609 transitions. [2022-11-25 15:49:19,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 101.5) internal successors, (609), 6 states have internal predecessors, (609), 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) [2022-11-25 15:49:19,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 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) [2022-11-25 15:49:19,340 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 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) [2022-11-25 15:49:19,340 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 94 flow. Second operand 6 states and 609 transitions. [2022-11-25 15:49:19,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 44 transitions, 154 flow [2022-11-25 15:49:19,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 44 transitions, 150 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 15:49:19,342 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 126 flow [2022-11-25 15:49:19,342 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=126, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2022-11-25 15:49:19,343 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2022-11-25 15:49:19,343 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 126 flow [2022-11-25 15:49:19,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 98.71428571428571) internal successors, (691), 7 states have internal predecessors, (691), 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) [2022-11-25 15:49:19,344 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:49:19,344 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:49:19,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 15:49:19,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-25 15:49:19,549 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:49:19,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:49:19,550 INFO L85 PathProgramCache]: Analyzing trace with hash -346019486, now seen corresponding path program 2 times [2022-11-25 15:49:19,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:49:19,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089099739] [2022-11-25 15:49:19,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:49:19,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:49:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:49:19,742 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:49:19,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:49:19,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089099739] [2022-11-25 15:49:19,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089099739] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:49:19,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772310143] [2022-11-25 15:49:19,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:49:19,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:49:19,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:49:19,749 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:49:19,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 15:49:19,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 15:49:19,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:49:19,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-25 15:49:19,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:49:19,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 15:49:19,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:49:19,974 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 21 treesize of output 20 [2022-11-25 15:49:20,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:49:20,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:49:20,026 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 15:49:20,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-25 15:49:20,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:49:20,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:49:20,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:49:20,082 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 15:49:20,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-25 15:49:20,115 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 15:49:20,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:49:20,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772310143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:49:20,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:49:20,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 13 [2022-11-25 15:49:20,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243832424] [2022-11-25 15:49:20,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:49:20,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 15:49:20,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:49:20,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 15:49:20,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-11-25 15:49:20,427 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 174 [2022-11-25 15:49:20,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 126 flow. Second operand has 9 states, 9 states have (on average 80.33333333333333) internal successors, (723), 9 states have internal predecessors, (723), 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) [2022-11-25 15:49:20,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:49:20,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 174 [2022-11-25 15:49:20,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:49:20,996 INFO L130 PetriNetUnfolder]: 475/1028 cut-off events. [2022-11-25 15:49:20,997 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 15:49:21,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2009 conditions, 1028 events. 475/1028 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4801 event pairs, 188 based on Foata normal form. 0/936 useless extension candidates. Maximal degree in co-relation 1976. Up to 416 conditions per place. [2022-11-25 15:49:21,006 INFO L137 encePairwiseOnDemand]: 158/174 looper letters, 117 selfloop transitions, 27 changer transitions 0/151 dead transitions. [2022-11-25 15:49:21,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 151 transitions, 628 flow [2022-11-25 15:49:21,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 15:49:21,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 15:49:21,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 932 transitions. [2022-11-25 15:49:21,015 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.535632183908046 [2022-11-25 15:49:21,015 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 932 transitions. [2022-11-25 15:49:21,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 932 transitions. [2022-11-25 15:49:21,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:49:21,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 932 transitions. [2022-11-25 15:49:21,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.2) internal successors, (932), 10 states have internal predecessors, (932), 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) [2022-11-25 15:49:21,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 174.0) internal successors, (1914), 11 states have internal predecessors, (1914), 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) [2022-11-25 15:49:21,023 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 174.0) internal successors, (1914), 11 states have internal predecessors, (1914), 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) [2022-11-25 15:49:21,023 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 126 flow. Second operand 10 states and 932 transitions. [2022-11-25 15:49:21,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 151 transitions, 628 flow [2022-11-25 15:49:21,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 151 transitions, 614 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-25 15:49:21,027 INFO L231 Difference]: Finished difference. Result has 64 places, 69 transitions, 316 flow [2022-11-25 15:49:21,027 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=316, PETRI_PLACES=64, PETRI_TRANSITIONS=69} [2022-11-25 15:49:21,028 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 23 predicate places. [2022-11-25 15:49:21,028 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 69 transitions, 316 flow [2022-11-25 15:49:21,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 80.33333333333333) internal successors, (723), 9 states have internal predecessors, (723), 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) [2022-11-25 15:49:21,029 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:49:21,029 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:49:21,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 15:49:21,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:49:21,238 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:49:21,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:49:21,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1383412963, now seen corresponding path program 1 times [2022-11-25 15:49:21,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:49:21,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742019974] [2022-11-25 15:49:21,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:49:21,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:49:21,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:49:21,344 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:49:21,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:49:21,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742019974] [2022-11-25 15:49:21,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742019974] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:49:21,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303651348] [2022-11-25 15:49:21,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:49:21,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:49:21,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:49:21,354 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:49:21,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 15:49:21,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:49:21,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 15:49:21,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:49:21,466 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:49:21,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:49:21,526 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:49:21,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303651348] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:49:21,527 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:49:21,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-25 15:49:21,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068364029] [2022-11-25 15:49:21,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:49:21,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 15:49:21,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:49:21,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 15:49:21,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-25 15:49:21,567 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 174 [2022-11-25 15:49:21,569 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 69 transitions, 316 flow. Second operand has 13 states, 13 states have (on average 98.38461538461539) internal successors, (1279), 13 states have internal predecessors, (1279), 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) [2022-11-25 15:49:21,569 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:49:21,569 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 174 [2022-11-25 15:49:21,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:49:21,742 INFO L130 PetriNetUnfolder]: 225/745 cut-off events. [2022-11-25 15:49:21,742 INFO L131 PetriNetUnfolder]: For 383/392 co-relation queries the response was YES. [2022-11-25 15:49:21,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1790 conditions, 745 events. 225/745 cut-off events. For 383/392 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3893 event pairs, 137 based on Foata normal form. 6/719 useless extension candidates. Maximal degree in co-relation 1732. Up to 369 conditions per place. [2022-11-25 15:49:21,748 INFO L137 encePairwiseOnDemand]: 171/174 looper letters, 23 selfloop transitions, 11 changer transitions 0/75 dead transitions. [2022-11-25 15:49:21,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 75 transitions, 420 flow [2022-11-25 15:49:21,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 15:49:21,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 15:49:21,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1200 transitions. [2022-11-25 15:49:21,751 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5747126436781609 [2022-11-25 15:49:21,752 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1200 transitions. [2022-11-25 15:49:21,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1200 transitions. [2022-11-25 15:49:21,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:49:21,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1200 transitions. [2022-11-25 15:49:21,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 100.0) internal successors, (1200), 12 states have internal predecessors, (1200), 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) [2022-11-25 15:49:21,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 174.0) internal successors, (2262), 13 states have internal predecessors, (2262), 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) [2022-11-25 15:49:21,760 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 174.0) internal successors, (2262), 13 states have internal predecessors, (2262), 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) [2022-11-25 15:49:21,760 INFO L175 Difference]: Start difference. First operand has 64 places, 69 transitions, 316 flow. Second operand 12 states and 1200 transitions. [2022-11-25 15:49:21,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 75 transitions, 420 flow [2022-11-25 15:49:21,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 75 transitions, 419 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:49:21,765 INFO L231 Difference]: Finished difference. Result has 80 places, 75 transitions, 399 flow [2022-11-25 15:49:21,765 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=399, PETRI_PLACES=80, PETRI_TRANSITIONS=75} [2022-11-25 15:49:21,766 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 39 predicate places. [2022-11-25 15:49:21,766 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 75 transitions, 399 flow [2022-11-25 15:49:21,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 98.38461538461539) internal successors, (1279), 13 states have internal predecessors, (1279), 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) [2022-11-25 15:49:21,767 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:49:21,768 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:49:21,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 15:49:21,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:49:21,973 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:49:21,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:49:21,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1024009565, now seen corresponding path program 2 times [2022-11-25 15:49:21,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:49:21,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140236469] [2022-11-25 15:49:21,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:49:21,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:49:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:49:22,404 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:49:22,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:49:22,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140236469] [2022-11-25 15:49:22,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140236469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:49:22,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:49:22,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:49:22,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145918851] [2022-11-25 15:49:22,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:49:22,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:49:22,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:49:22,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:49:22,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:49:22,567 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 174 [2022-11-25 15:49:22,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 75 transitions, 399 flow. Second operand has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 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) [2022-11-25 15:49:22,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:49:22,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 174 [2022-11-25 15:49:22,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:49:22,923 INFO L130 PetriNetUnfolder]: 563/1320 cut-off events. [2022-11-25 15:49:22,923 INFO L131 PetriNetUnfolder]: For 1317/1329 co-relation queries the response was YES. [2022-11-25 15:49:22,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3625 conditions, 1320 events. 563/1320 cut-off events. For 1317/1329 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 6949 event pairs, 222 based on Foata normal form. 0/1265 useless extension candidates. Maximal degree in co-relation 3543. Up to 846 conditions per place. [2022-11-25 15:49:22,932 INFO L137 encePairwiseOnDemand]: 163/174 looper letters, 98 selfloop transitions, 30 changer transitions 0/141 dead transitions. [2022-11-25 15:49:22,932 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 141 transitions, 891 flow [2022-11-25 15:49:22,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:49:22,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 15:49:22,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 593 transitions. [2022-11-25 15:49:22,935 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5680076628352491 [2022-11-25 15:49:22,935 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 593 transitions. [2022-11-25 15:49:22,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 593 transitions. [2022-11-25 15:49:22,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:49:22,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 593 transitions. [2022-11-25 15:49:22,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 98.83333333333333) internal successors, (593), 6 states have internal predecessors, (593), 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) [2022-11-25 15:49:22,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 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) [2022-11-25 15:49:22,939 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 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) [2022-11-25 15:49:22,940 INFO L175 Difference]: Start difference. First operand has 80 places, 75 transitions, 399 flow. Second operand 6 states and 593 transitions. [2022-11-25 15:49:22,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 141 transitions, 891 flow [2022-11-25 15:49:22,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 141 transitions, 843 flow, removed 19 selfloop flow, removed 5 redundant places. [2022-11-25 15:49:22,946 INFO L231 Difference]: Finished difference. Result has 85 places, 100 transitions, 575 flow [2022-11-25 15:49:22,947 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=575, PETRI_PLACES=85, PETRI_TRANSITIONS=100} [2022-11-25 15:49:22,947 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 44 predicate places. [2022-11-25 15:49:22,947 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 100 transitions, 575 flow [2022-11-25 15:49:22,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 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) [2022-11-25 15:49:22,948 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:49:22,948 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:49:22,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 15:49:22,949 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:49:22,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:49:22,949 INFO L85 PathProgramCache]: Analyzing trace with hash -2066744669, now seen corresponding path program 1 times [2022-11-25 15:49:22,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:49:22,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407207726] [2022-11-25 15:49:22,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:49:22,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:49:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:49:23,250 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:49:23,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:49:23,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407207726] [2022-11-25 15:49:23,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407207726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:49:23,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:49:23,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:49:23,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862208995] [2022-11-25 15:49:23,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:49:23,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:49:23,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:49:23,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:49:23,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:49:23,395 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 174 [2022-11-25 15:49:23,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 100 transitions, 575 flow. Second operand has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 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) [2022-11-25 15:49:23,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:49:23,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 174 [2022-11-25 15:49:23,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:49:23,906 INFO L130 PetriNetUnfolder]: 953/1966 cut-off events. [2022-11-25 15:49:23,906 INFO L131 PetriNetUnfolder]: For 2999/3029 co-relation queries the response was YES. [2022-11-25 15:49:23,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6565 conditions, 1966 events. 953/1966 cut-off events. For 2999/3029 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 9939 event pairs, 342 based on Foata normal form. 0/1873 useless extension candidates. Maximal degree in co-relation 6503. Up to 1577 conditions per place. [2022-11-25 15:49:23,922 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 120 selfloop transitions, 58 changer transitions 0/181 dead transitions. [2022-11-25 15:49:23,923 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 181 transitions, 1370 flow [2022-11-25 15:49:23,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:49:23,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 15:49:23,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 581 transitions. [2022-11-25 15:49:23,925 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5565134099616859 [2022-11-25 15:49:23,926 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 581 transitions. [2022-11-25 15:49:23,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 581 transitions. [2022-11-25 15:49:23,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:49:23,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 581 transitions. [2022-11-25 15:49:23,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 96.83333333333333) internal successors, (581), 6 states have internal predecessors, (581), 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) [2022-11-25 15:49:23,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 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) [2022-11-25 15:49:23,934 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 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) [2022-11-25 15:49:23,934 INFO L175 Difference]: Start difference. First operand has 85 places, 100 transitions, 575 flow. Second operand 6 states and 581 transitions. [2022-11-25 15:49:23,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 181 transitions, 1370 flow [2022-11-25 15:49:23,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 181 transitions, 1370 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 15:49:23,947 INFO L231 Difference]: Finished difference. Result has 95 places, 148 transitions, 1206 flow [2022-11-25 15:49:23,948 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1206, PETRI_PLACES=95, PETRI_TRANSITIONS=148} [2022-11-25 15:49:23,950 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 54 predicate places. [2022-11-25 15:49:23,953 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 148 transitions, 1206 flow [2022-11-25 15:49:23,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 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) [2022-11-25 15:49:23,956 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:49:23,956 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:49:23,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 15:49:23,957 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:49:23,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:49:23,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1833877221, now seen corresponding path program 1 times [2022-11-25 15:49:23,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:49:23,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851661862] [2022-11-25 15:49:23,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:49:23,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:49:23,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:49:24,317 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:49:24,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:49:24,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851661862] [2022-11-25 15:49:24,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851661862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:49:24,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:49:24,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:49:24,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150513857] [2022-11-25 15:49:24,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:49:24,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:49:24,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:49:24,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:49:24,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:49:24,424 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 174 [2022-11-25 15:49:24,425 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 148 transitions, 1206 flow. Second operand has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 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) [2022-11-25 15:49:24,425 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:49:24,425 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 174 [2022-11-25 15:49:24,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:49:25,059 INFO L130 PetriNetUnfolder]: 1081/2263 cut-off events. [2022-11-25 15:49:25,060 INFO L131 PetriNetUnfolder]: For 5256/5291 co-relation queries the response was YES. [2022-11-25 15:49:25,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9025 conditions, 2263 events. 1081/2263 cut-off events. For 5256/5291 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 12218 event pairs, 299 based on Foata normal form. 0/2171 useless extension candidates. Maximal degree in co-relation 8958. Up to 1789 conditions per place. [2022-11-25 15:49:25,081 INFO L137 encePairwiseOnDemand]: 159/174 looper letters, 174 selfloop transitions, 71 changer transitions 4/254 dead transitions. [2022-11-25 15:49:25,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 254 transitions, 2350 flow [2022-11-25 15:49:25,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:49:25,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 15:49:25,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 576 transitions. [2022-11-25 15:49:25,083 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2022-11-25 15:49:25,083 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 576 transitions. [2022-11-25 15:49:25,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 576 transitions. [2022-11-25 15:49:25,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:49:25,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 576 transitions. [2022-11-25 15:49:25,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 96.0) internal successors, (576), 6 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) [2022-11-25 15:49:25,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 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) [2022-11-25 15:49:25,090 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 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) [2022-11-25 15:49:25,090 INFO L175 Difference]: Start difference. First operand has 95 places, 148 transitions, 1206 flow. Second operand 6 states and 576 transitions. [2022-11-25 15:49:25,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 254 transitions, 2350 flow [2022-11-25 15:49:25,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 254 transitions, 2148 flow, removed 101 selfloop flow, removed 0 redundant places. [2022-11-25 15:49:25,120 INFO L231 Difference]: Finished difference. Result has 105 places, 205 transitions, 1734 flow [2022-11-25 15:49:25,121 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1734, PETRI_PLACES=105, PETRI_TRANSITIONS=205} [2022-11-25 15:49:25,121 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 64 predicate places. [2022-11-25 15:49:25,121 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 205 transitions, 1734 flow [2022-11-25 15:49:25,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 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) [2022-11-25 15:49:25,122 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:49:25,122 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:49:25,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 15:49:25,122 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:49:25,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:49:25,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1125621048, now seen corresponding path program 1 times [2022-11-25 15:49:25,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:49:25,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704274949] [2022-11-25 15:49:25,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:49:25,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:49:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:49:25,755 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-25 15:49:25,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:49:25,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704274949] [2022-11-25 15:49:25,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704274949] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:49:25,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530949125] [2022-11-25 15:49:25,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:49:25,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:49:25,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:49:25,758 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:49:25,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 15:49:25,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:49:25,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-25 15:49:25,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:49:25,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 15:49:26,011 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:49:26,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:49:26,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530949125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:49:26,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:49:26,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2022-11-25 15:49:26,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336791673] [2022-11-25 15:49:26,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:49:26,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:49:26,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:49:26,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:49:26,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-25 15:49:26,070 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 174 [2022-11-25 15:49:26,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 205 transitions, 1734 flow. Second operand has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 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) [2022-11-25 15:49:26,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:49:26,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 174 [2022-11-25 15:49:26,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:49:26,687 INFO L130 PetriNetUnfolder]: 1022/2460 cut-off events. [2022-11-25 15:49:26,687 INFO L131 PetriNetUnfolder]: For 7490/7597 co-relation queries the response was YES. [2022-11-25 15:49:26,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10327 conditions, 2460 events. 1022/2460 cut-off events. For 7490/7597 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 15801 event pairs, 114 based on Foata normal form. 15/2418 useless extension candidates. Maximal degree in co-relation 10255. Up to 563 conditions per place. [2022-11-25 15:49:26,712 INFO L137 encePairwiseOnDemand]: 166/174 looper letters, 103 selfloop transitions, 12 changer transitions 0/264 dead transitions. [2022-11-25 15:49:26,713 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 264 transitions, 2439 flow [2022-11-25 15:49:26,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:49:26,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 15:49:26,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 589 transitions. [2022-11-25 15:49:26,715 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.564176245210728 [2022-11-25 15:49:26,716 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 589 transitions. [2022-11-25 15:49:26,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 589 transitions. [2022-11-25 15:49:26,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:49:26,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 589 transitions. [2022-11-25 15:49:26,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 98.16666666666667) internal successors, (589), 6 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:26,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 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) [2022-11-25 15:49:26,720 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 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) [2022-11-25 15:49:26,720 INFO L175 Difference]: Start difference. First operand has 105 places, 205 transitions, 1734 flow. Second operand 6 states and 589 transitions. [2022-11-25 15:49:26,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 264 transitions, 2439 flow [2022-11-25 15:49:26,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 264 transitions, 2315 flow, removed 62 selfloop flow, removed 0 redundant places. [2022-11-25 15:49:26,764 INFO L231 Difference]: Finished difference. Result has 113 places, 213 transitions, 1737 flow [2022-11-25 15:49:26,765 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1634, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1737, PETRI_PLACES=113, PETRI_TRANSITIONS=213} [2022-11-25 15:49:26,768 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 72 predicate places. [2022-11-25 15:49:26,768 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 213 transitions, 1737 flow [2022-11-25 15:49:26,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 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) [2022-11-25 15:49:26,769 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:49:26,769 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:49:26,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 15:49:26,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:49:26,974 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:49:26,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:49:26,975 INFO L85 PathProgramCache]: Analyzing trace with hash 145296808, now seen corresponding path program 2 times [2022-11-25 15:49:26,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:49:26,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602017523] [2022-11-25 15:49:26,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:49:26,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:49:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:49:27,449 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:49:27,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:49:27,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602017523] [2022-11-25 15:49:27,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602017523] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:49:27,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:49:27,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:49:27,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189462162] [2022-11-25 15:49:27,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:49:27,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:49:27,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:49:27,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:49:27,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:49:27,614 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 174 [2022-11-25 15:49:27,615 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 213 transitions, 1737 flow. Second operand has 6 states, 6 states have (on average 88.0) internal successors, (528), 6 states have internal predecessors, (528), 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) [2022-11-25 15:49:27,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:49:27,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 174 [2022-11-25 15:49:27,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:49:28,688 INFO L130 PetriNetUnfolder]: 1918/4602 cut-off events. [2022-11-25 15:49:28,688 INFO L131 PetriNetUnfolder]: For 14579/14794 co-relation queries the response was YES. [2022-11-25 15:49:28,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19342 conditions, 4602 events. 1918/4602 cut-off events. For 14579/14794 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 32709 event pairs, 205 based on Foata normal form. 6/4531 useless extension candidates. Maximal degree in co-relation 19265. Up to 1166 conditions per place. [2022-11-25 15:49:28,745 INFO L137 encePairwiseOnDemand]: 166/174 looper letters, 120 selfloop transitions, 19 changer transitions 1/289 dead transitions. [2022-11-25 15:49:28,745 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 289 transitions, 2637 flow [2022-11-25 15:49:28,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:49:28,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 15:49:28,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 570 transitions. [2022-11-25 15:49:28,747 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5459770114942529 [2022-11-25 15:49:28,748 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 570 transitions. [2022-11-25 15:49:28,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 570 transitions. [2022-11-25 15:49:28,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:49:28,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 570 transitions. [2022-11-25 15:49:28,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 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) [2022-11-25 15:49:28,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 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) [2022-11-25 15:49:28,752 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 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) [2022-11-25 15:49:28,752 INFO L175 Difference]: Start difference. First operand has 113 places, 213 transitions, 1737 flow. Second operand 6 states and 570 transitions. [2022-11-25 15:49:28,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 289 transitions, 2637 flow [2022-11-25 15:49:28,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 289 transitions, 2623 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:49:28,814 INFO L231 Difference]: Finished difference. Result has 119 places, 225 transitions, 1910 flow [2022-11-25 15:49:28,814 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1729, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1910, PETRI_PLACES=119, PETRI_TRANSITIONS=225} [2022-11-25 15:49:28,815 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 78 predicate places. [2022-11-25 15:49:28,815 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 225 transitions, 1910 flow [2022-11-25 15:49:28,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 88.0) internal successors, (528), 6 states have internal predecessors, (528), 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) [2022-11-25 15:49:28,816 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:49:28,816 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:49:28,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 15:49:28,817 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:49:28,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:49:28,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1219657204, now seen corresponding path program 1 times [2022-11-25 15:49:28,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:49:28,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496606795] [2022-11-25 15:49:28,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:49:28,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:49:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:49:29,515 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-25 15:49:29,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:49:29,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496606795] [2022-11-25 15:49:29,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496606795] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:49:29,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469281012] [2022-11-25 15:49:29,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:49:29,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:49:29,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:49:29,518 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:49:29,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 15:49:29,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:49:29,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-25 15:49:29,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:49:29,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 15:49:29,807 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:49:29,807 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:49:29,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469281012] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:49:29,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:49:29,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2022-11-25 15:49:29,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608057190] [2022-11-25 15:49:29,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:49:29,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:49:29,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:49:29,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:49:29,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-25 15:49:29,860 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 174 [2022-11-25 15:49:29,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 225 transitions, 1910 flow. Second operand has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 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) [2022-11-25 15:49:29,861 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:49:29,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 174 [2022-11-25 15:49:29,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:49:30,849 INFO L130 PetriNetUnfolder]: 1614/3953 cut-off events. [2022-11-25 15:49:30,850 INFO L131 PetriNetUnfolder]: For 14020/14205 co-relation queries the response was YES. [2022-11-25 15:49:30,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17156 conditions, 3953 events. 1614/3953 cut-off events. For 14020/14205 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 27448 event pairs, 177 based on Foata normal form. 11/3893 useless extension candidates. Maximal degree in co-relation 17076. Up to 998 conditions per place. [2022-11-25 15:49:30,900 INFO L137 encePairwiseOnDemand]: 167/174 looper letters, 120 selfloop transitions, 22 changer transitions 1/292 dead transitions. [2022-11-25 15:49:30,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 292 transitions, 2731 flow [2022-11-25 15:49:30,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:49:30,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 15:49:30,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 684 transitions. [2022-11-25 15:49:30,903 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5615763546798029 [2022-11-25 15:49:30,903 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 684 transitions. [2022-11-25 15:49:30,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 684 transitions. [2022-11-25 15:49:30,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:49:30,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 684 transitions. [2022-11-25 15:49:30,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 97.71428571428571) internal successors, (684), 7 states have internal predecessors, (684), 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) [2022-11-25 15:49:30,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 174.0) internal successors, (1392), 8 states have internal predecessors, (1392), 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) [2022-11-25 15:49:30,909 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 174.0) internal successors, (1392), 8 states have internal predecessors, (1392), 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) [2022-11-25 15:49:30,909 INFO L175 Difference]: Start difference. First operand has 119 places, 225 transitions, 1910 flow. Second operand 7 states and 684 transitions. [2022-11-25 15:49:30,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 292 transitions, 2731 flow [2022-11-25 15:49:30,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 292 transitions, 2728 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 15:49:30,976 INFO L231 Difference]: Finished difference. Result has 127 places, 228 transitions, 2007 flow [2022-11-25 15:49:30,977 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1879, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2007, PETRI_PLACES=127, PETRI_TRANSITIONS=228} [2022-11-25 15:49:30,977 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 86 predicate places. [2022-11-25 15:49:30,977 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 228 transitions, 2007 flow [2022-11-25 15:49:30,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 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) [2022-11-25 15:49:30,978 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:49:30,978 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:49:30,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 15:49:31,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 15:49:31,184 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:49:31,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:49:31,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1657836996, now seen corresponding path program 2 times [2022-11-25 15:49:31,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:49:31,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956488724] [2022-11-25 15:49:31,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:49:31,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:49:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:49:31,833 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-25 15:49:31,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:49:31,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956488724] [2022-11-25 15:49:31,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956488724] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:49:31,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778440352] [2022-11-25 15:49:31,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:49:31,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:49:31,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:49:31,836 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:49:31,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 15:49:31,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 15:49:31,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:49:31,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-25 15:49:31,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:49:32,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 15:49:32,064 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:49:32,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:49:32,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778440352] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:49:32,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:49:32,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2022-11-25 15:49:32,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665416317] [2022-11-25 15:49:32,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:49:32,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:49:32,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:49:32,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:49:32,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-25 15:49:32,135 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 174 [2022-11-25 15:49:32,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 228 transitions, 2007 flow. Second operand has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 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) [2022-11-25 15:49:32,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:49:32,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 174 [2022-11-25 15:49:32,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:49:33,011 INFO L130 PetriNetUnfolder]: 1599/3899 cut-off events. [2022-11-25 15:49:33,012 INFO L131 PetriNetUnfolder]: For 14203/14363 co-relation queries the response was YES. [2022-11-25 15:49:33,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16936 conditions, 3899 events. 1599/3899 cut-off events. For 14203/14363 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 27585 event pairs, 219 based on Foata normal form. 14/3832 useless extension candidates. Maximal degree in co-relation 16852. Up to 1080 conditions per place. [2022-11-25 15:49:33,050 INFO L137 encePairwiseOnDemand]: 167/174 looper letters, 117 selfloop transitions, 17 changer transitions 0/283 dead transitions. [2022-11-25 15:49:33,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 283 transitions, 2726 flow [2022-11-25 15:49:33,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:49:33,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 15:49:33,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 587 transitions. [2022-11-25 15:49:33,052 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5622605363984674 [2022-11-25 15:49:33,052 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 587 transitions. [2022-11-25 15:49:33,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 587 transitions. [2022-11-25 15:49:33,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:49:33,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 587 transitions. [2022-11-25 15:49:33,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 97.83333333333333) internal successors, (587), 6 states have internal predecessors, (587), 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) [2022-11-25 15:49:33,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 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) [2022-11-25 15:49:33,057 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 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) [2022-11-25 15:49:33,057 INFO L175 Difference]: Start difference. First operand has 127 places, 228 transitions, 2007 flow. Second operand 6 states and 587 transitions. [2022-11-25 15:49:33,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 283 transitions, 2726 flow [2022-11-25 15:49:33,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 283 transitions, 2676 flow, removed 13 selfloop flow, removed 4 redundant places. [2022-11-25 15:49:33,110 INFO L231 Difference]: Finished difference. Result has 130 places, 230 transitions, 2020 flow [2022-11-25 15:49:33,111 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1916, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2020, PETRI_PLACES=130, PETRI_TRANSITIONS=230} [2022-11-25 15:49:33,111 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 89 predicate places. [2022-11-25 15:49:33,111 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 230 transitions, 2020 flow [2022-11-25 15:49:33,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 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) [2022-11-25 15:49:33,112 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:49:33,112 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:49:33,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 15:49:33,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-25 15:49:33,318 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:49:33,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:49:33,318 INFO L85 PathProgramCache]: Analyzing trace with hash -966559772, now seen corresponding path program 1 times [2022-11-25 15:49:33,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:49:33,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505387598] [2022-11-25 15:49:33,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:49:33,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:49:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:49:33,662 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-25 15:49:33,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:49:33,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505387598] [2022-11-25 15:49:33,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505387598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:49:33,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:49:33,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:49:33,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116875621] [2022-11-25 15:49:33,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:49:33,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:49:33,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:49:33,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:49:33,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:49:33,809 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 174 [2022-11-25 15:49:33,809 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 230 transitions, 2020 flow. Second operand has 6 states, 6 states have (on average 89.0) internal successors, (534), 6 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) [2022-11-25 15:49:33,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:49:33,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 174 [2022-11-25 15:49:33,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:49:35,069 INFO L130 PetriNetUnfolder]: 2262/4891 cut-off events. [2022-11-25 15:49:35,069 INFO L131 PetriNetUnfolder]: For 19529/19669 co-relation queries the response was YES. [2022-11-25 15:49:35,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23501 conditions, 4891 events. 2262/4891 cut-off events. For 19529/19669 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 33165 event pairs, 413 based on Foata normal form. 64/4868 useless extension candidates. Maximal degree in co-relation 23416. Up to 3502 conditions per place. [2022-11-25 15:49:35,116 INFO L137 encePairwiseOnDemand]: 163/174 looper letters, 226 selfloop transitions, 84 changer transitions 4/343 dead transitions. [2022-11-25 15:49:35,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 343 transitions, 3798 flow [2022-11-25 15:49:35,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:49:35,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 15:49:35,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 598 transitions. [2022-11-25 15:49:35,119 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5727969348659003 [2022-11-25 15:49:35,119 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 598 transitions. [2022-11-25 15:49:35,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 598 transitions. [2022-11-25 15:49:35,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:49:35,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 598 transitions. [2022-11-25 15:49:35,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 99.66666666666667) internal successors, (598), 6 states have internal predecessors, (598), 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) [2022-11-25 15:49:35,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 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) [2022-11-25 15:49:35,125 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 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) [2022-11-25 15:49:35,125 INFO L175 Difference]: Start difference. First operand has 130 places, 230 transitions, 2020 flow. Second operand 6 states and 598 transitions. [2022-11-25 15:49:35,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 343 transitions, 3798 flow [2022-11-25 15:49:35,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 343 transitions, 3786 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:49:35,195 INFO L231 Difference]: Finished difference. Result has 138 places, 269 transitions, 2898 flow [2022-11-25 15:49:35,195 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2008, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2898, PETRI_PLACES=138, PETRI_TRANSITIONS=269} [2022-11-25 15:49:35,197 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 97 predicate places. [2022-11-25 15:49:35,197 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 269 transitions, 2898 flow [2022-11-25 15:49:35,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 89.0) internal successors, (534), 6 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) [2022-11-25 15:49:35,198 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:49:35,198 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:49:35,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 15:49:35,198 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:49:35,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:49:35,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1080738247, now seen corresponding path program 1 times [2022-11-25 15:49:35,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:49:35,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095731770] [2022-11-25 15:49:35,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:49:35,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:49:35,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:49:36,122 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:49:36,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:49:36,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095731770] [2022-11-25 15:49:36,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095731770] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:49:36,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797146449] [2022-11-25 15:49:36,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:49:36,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:49:36,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:49:36,124 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:49:36,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 15:49:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:49:36,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-25 15:49:36,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:49:36,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 15:49:36,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:49:36,717 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 21 treesize of output 20 [2022-11-25 15:49:36,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:49:36,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:49:36,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-25 15:49:36,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:49:36,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:49:36,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:49:36,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-11-25 15:49:36,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:49:36,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:49:36,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:49:36,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:49:37,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:49:37,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:49:37,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:49:37,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2022-11-25 15:49:37,054 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:49:37,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:49:38,210 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:49:38,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797146449] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:49:38,211 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:49:38,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2022-11-25 15:49:38,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336983567] [2022-11-25 15:49:38,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:49:38,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-25 15:49:38,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:49:38,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-25 15:49:38,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2022-11-25 15:49:42,928 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 174 [2022-11-25 15:49:42,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 269 transitions, 2898 flow. Second operand has 31 states, 31 states have (on average 75.54838709677419) internal successors, (2342), 31 states have internal predecessors, (2342), 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) [2022-11-25 15:49:42,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:49:42,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 174 [2022-11-25 15:49:42,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:49:47,336 INFO L130 PetriNetUnfolder]: 3727/8055 cut-off events. [2022-11-25 15:49:47,336 INFO L131 PetriNetUnfolder]: For 40817/41070 co-relation queries the response was YES. [2022-11-25 15:49:47,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42162 conditions, 8055 events. 3727/8055 cut-off events. For 40817/41070 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 61165 event pairs, 440 based on Foata normal form. 53/7939 useless extension candidates. Maximal degree in co-relation 42074. Up to 2531 conditions per place. [2022-11-25 15:49:47,408 INFO L137 encePairwiseOnDemand]: 156/174 looper letters, 764 selfloop transitions, 155 changer transitions 10/958 dead transitions. [2022-11-25 15:49:47,408 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 958 transitions, 11839 flow [2022-11-25 15:49:47,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-25 15:49:47,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-25 15:49:47,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1568 transitions. [2022-11-25 15:49:47,413 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5006385696040868 [2022-11-25 15:49:47,413 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1568 transitions. [2022-11-25 15:49:47,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1568 transitions. [2022-11-25 15:49:47,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:49:47,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1568 transitions. [2022-11-25 15:49:47,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 87.11111111111111) internal successors, (1568), 18 states have internal predecessors, (1568), 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) [2022-11-25 15:49:47,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 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) [2022-11-25 15:49:47,423 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 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) [2022-11-25 15:49:47,423 INFO L175 Difference]: Start difference. First operand has 138 places, 269 transitions, 2898 flow. Second operand 18 states and 1568 transitions. [2022-11-25 15:49:47,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 958 transitions, 11839 flow [2022-11-25 15:49:47,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 958 transitions, 11491 flow, removed 174 selfloop flow, removed 0 redundant places. [2022-11-25 15:49:47,575 INFO L231 Difference]: Finished difference. Result has 168 places, 391 transitions, 5036 flow [2022-11-25 15:49:47,576 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2758, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5036, PETRI_PLACES=168, PETRI_TRANSITIONS=391} [2022-11-25 15:49:47,577 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 127 predicate places. [2022-11-25 15:49:47,577 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 391 transitions, 5036 flow [2022-11-25 15:49:47,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 75.54838709677419) internal successors, (2342), 31 states have internal predecessors, (2342), 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) [2022-11-25 15:49:47,578 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:49:47,578 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:49:47,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 15:49:47,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-25 15:49:47,795 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:49:47,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:49:47,795 INFO L85 PathProgramCache]: Analyzing trace with hash -428046194, now seen corresponding path program 1 times [2022-11-25 15:49:47,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:49:47,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982177254] [2022-11-25 15:49:47,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:49:47,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:49:47,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:49:48,972 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:49:48,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:49:48,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982177254] [2022-11-25 15:49:48,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982177254] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:49:48,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002791243] [2022-11-25 15:49:48,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:49:48,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:49:48,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:49:48,975 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:49:48,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 15:49:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:49:49,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-25 15:49:49,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:49:49,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 15:49:49,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:49:49,613 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 21 treesize of output 20 [2022-11-25 15:49:49,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:49:49,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:49:49,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-25 15:49:49,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:49:49,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:49:49,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:49:49,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-11-25 15:49:49,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:49:49,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:49:49,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:49:49,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:49:49,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:49:49,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:49:49,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:49:49,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2022-11-25 15:49:49,919 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:49:49,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:49:51,174 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:49:51,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002791243] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:49:51,175 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:49:51,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2022-11-25 15:49:51,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543342133] [2022-11-25 15:49:51,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:49:51,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-25 15:49:51,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:49:51,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-25 15:49:51,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2022-11-25 15:49:55,479 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 174 [2022-11-25 15:49:55,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 391 transitions, 5036 flow. Second operand has 31 states, 31 states have (on average 70.2258064516129) internal successors, (2177), 31 states have internal predecessors, (2177), 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) [2022-11-25 15:49:55,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:49:55,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 174 [2022-11-25 15:49:55,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:50:00,093 INFO L130 PetriNetUnfolder]: 5071/10578 cut-off events. [2022-11-25 15:50:00,093 INFO L131 PetriNetUnfolder]: For 67406/67580 co-relation queries the response was YES. [2022-11-25 15:50:00,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59010 conditions, 10578 events. 5071/10578 cut-off events. For 67406/67580 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 81432 event pairs, 861 based on Foata normal form. 52/10611 useless extension candidates. Maximal degree in co-relation 58907. Up to 4391 conditions per place. [2022-11-25 15:50:00,190 INFO L137 encePairwiseOnDemand]: 153/174 looper letters, 751 selfloop transitions, 171 changer transitions 10/947 dead transitions. [2022-11-25 15:50:00,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 947 transitions, 12349 flow [2022-11-25 15:50:00,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-25 15:50:00,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-25 15:50:00,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1388 transitions. [2022-11-25 15:50:00,195 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46923597025016905 [2022-11-25 15:50:00,195 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1388 transitions. [2022-11-25 15:50:00,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1388 transitions. [2022-11-25 15:50:00,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:50:00,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1388 transitions. [2022-11-25 15:50:00,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 81.6470588235294) internal successors, (1388), 17 states have internal predecessors, (1388), 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) [2022-11-25 15:50:00,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 174.0) internal successors, (3132), 18 states have internal predecessors, (3132), 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) [2022-11-25 15:50:00,204 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 174.0) internal successors, (3132), 18 states have internal predecessors, (3132), 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) [2022-11-25 15:50:00,205 INFO L175 Difference]: Start difference. First operand has 168 places, 391 transitions, 5036 flow. Second operand 17 states and 1388 transitions. [2022-11-25 15:50:00,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 947 transitions, 12349 flow [2022-11-25 15:50:00,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 947 transitions, 12314 flow, removed 17 selfloop flow, removed 1 redundant places. [2022-11-25 15:50:00,483 INFO L231 Difference]: Finished difference. Result has 193 places, 523 transitions, 7468 flow [2022-11-25 15:50:00,484 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=5013, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=7468, PETRI_PLACES=193, PETRI_TRANSITIONS=523} [2022-11-25 15:50:00,484 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 152 predicate places. [2022-11-25 15:50:00,484 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 523 transitions, 7468 flow [2022-11-25 15:50:00,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 70.2258064516129) internal successors, (2177), 31 states have internal predecessors, (2177), 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) [2022-11-25 15:50:00,501 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:50:00,501 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:50:00,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 15:50:00,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-25 15:50:00,712 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:50:00,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:50:00,712 INFO L85 PathProgramCache]: Analyzing trace with hash -363121399, now seen corresponding path program 2 times [2022-11-25 15:50:00,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:50:00,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540764549] [2022-11-25 15:50:00,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:50:00,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:50:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:02,033 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:50:02,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:50:02,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540764549] [2022-11-25 15:50:02,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540764549] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:50:02,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117160736] [2022-11-25 15:50:02,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:50:02,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:50:02,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:50:02,035 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:50:02,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 15:50:02,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 15:50:02,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:50:02,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-25 15:50:02,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:50:02,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 15:50:02,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:02,591 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 21 treesize of output 20 [2022-11-25 15:50:02,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:02,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:02,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-25 15:50:02,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:02,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:02,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:02,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-11-25 15:50:02,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:02,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:02,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:02,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:02,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:02,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:02,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:02,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2022-11-25 15:50:02,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:02,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:02,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:02,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:02,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:02,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:02,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:02,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 56 [2022-11-25 15:50:02,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:02,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:02,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:02,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:02,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:02,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:02,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:03,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 56 [2022-11-25 15:50:03,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:03,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:03,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:03,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:03,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:03,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:03,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:03,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 56 [2022-11-25 15:50:03,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:03,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:03,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:03,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:03,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:03,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:03,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:50:03,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2022-11-25 15:50:03,182 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:50:03,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:50:20,257 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:50:20,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117160736] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:50:20,258 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:50:20,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 32 [2022-11-25 15:50:20,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367003638] [2022-11-25 15:50:20,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:50:20,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-25 15:50:20,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:50:20,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-25 15:50:20,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=872, Unknown=1, NotChecked=0, Total=1056 [2022-11-25 15:50:22,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:50:24,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:50:26,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:50:29,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:50:32,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:50:34,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:50:36,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:50:38,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:50:40,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:50:43,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:50:46,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:50:47,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:50:49,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:50:51,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:50:53,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:50:55,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:50:58,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:51:01,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:51:03,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:51:05,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:51:07,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:51:07,510 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 174 [2022-11-25 15:51:07,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 523 transitions, 7468 flow. Second operand has 33 states, 33 states have (on average 51.121212121212125) internal successors, (1687), 33 states have internal predecessors, (1687), 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) [2022-11-25 15:51:07,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:51:07,512 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 174 [2022-11-25 15:51:07,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:51:16,728 INFO L130 PetriNetUnfolder]: 8788/17698 cut-off events. [2022-11-25 15:51:16,728 INFO L131 PetriNetUnfolder]: For 136512/136512 co-relation queries the response was YES. [2022-11-25 15:51:16,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104583 conditions, 17698 events. 8788/17698 cut-off events. For 136512/136512 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 136659 event pairs, 1505 based on Foata normal form. 35/17733 useless extension candidates. Maximal degree in co-relation 104469. Up to 5716 conditions per place. [2022-11-25 15:51:17,065 INFO L137 encePairwiseOnDemand]: 155/174 looper letters, 1467 selfloop transitions, 354 changer transitions 69/1890 dead transitions. [2022-11-25 15:51:17,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 1890 transitions, 26293 flow [2022-11-25 15:51:17,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-25 15:51:17,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-25 15:51:17,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1970 transitions. [2022-11-25 15:51:17,073 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39040824415378517 [2022-11-25 15:51:17,074 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1970 transitions. [2022-11-25 15:51:17,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1970 transitions. [2022-11-25 15:51:17,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:51:17,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1970 transitions. [2022-11-25 15:51:17,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 67.93103448275862) internal successors, (1970), 29 states have internal predecessors, (1970), 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) [2022-11-25 15:51:17,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 174.0) internal successors, (5220), 30 states have internal predecessors, (5220), 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) [2022-11-25 15:51:17,091 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 174.0) internal successors, (5220), 30 states have internal predecessors, (5220), 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) [2022-11-25 15:51:17,092 INFO L175 Difference]: Start difference. First operand has 193 places, 523 transitions, 7468 flow. Second operand 29 states and 1970 transitions. [2022-11-25 15:51:17,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 1890 transitions, 26293 flow [2022-11-25 15:51:17,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 1890 transitions, 26034 flow, removed 101 selfloop flow, removed 2 redundant places. [2022-11-25 15:51:17,767 INFO L231 Difference]: Finished difference. Result has 240 places, 746 transitions, 12595 flow [2022-11-25 15:51:17,768 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=7354, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=12595, PETRI_PLACES=240, PETRI_TRANSITIONS=746} [2022-11-25 15:51:17,769 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 199 predicate places. [2022-11-25 15:51:17,769 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 746 transitions, 12595 flow [2022-11-25 15:51:17,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 51.121212121212125) internal successors, (1687), 33 states have internal predecessors, (1687), 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) [2022-11-25 15:51:17,770 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:51:17,770 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:17,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 15:51:17,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-25 15:51:17,972 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:51:17,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:17,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1781183238, now seen corresponding path program 2 times [2022-11-25 15:51:17,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:17,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062609113] [2022-11-25 15:51:17,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:17,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:18,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:18,691 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:51:18,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:51:18,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062609113] [2022-11-25 15:51:18,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062609113] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:51:18,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832903740] [2022-11-25 15:51:18,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:51:18,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:51:18,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:51:18,698 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:51:18,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 15:51:18,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 15:51:18,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:51:18,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-25 15:51:18,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:51:19,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 15:51:19,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:51:19,386 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 21 treesize of output 20 [2022-11-25 15:51:19,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:51:19,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:51:19,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-25 15:51:19,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:51:19,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:51:19,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:51:19,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-11-25 15:51:19,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:51:19,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:51:19,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:51:19,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:51:19,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:51:19,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:51:19,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:51:19,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2022-11-25 15:51:19,772 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:51:19,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:51:26,916 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:51:26,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832903740] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:51:26,916 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:51:26,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2022-11-25 15:51:26,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303858470] [2022-11-25 15:51:26,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:51:26,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-25 15:51:26,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:51:26,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-25 15:51:26,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=747, Unknown=2, NotChecked=0, Total=930 [2022-11-25 15:51:30,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:51:33,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:51:36,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:51:38,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:51:40,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:51:43,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:51:45,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:51:47,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:51:50,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:51:53,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:51:55,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:51:58,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:52:00,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:52:02,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:52:04,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:52:05,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:52:08,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:52:10,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:52:12,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:52:12,918 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 174 [2022-11-25 15:52:12,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 746 transitions, 12595 flow. Second operand has 31 states, 31 states have (on average 49.32258064516129) internal successors, (1529), 31 states have internal predecessors, (1529), 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) [2022-11-25 15:52:12,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:52:12,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 174 [2022-11-25 15:52:12,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:52:22,934 INFO L130 PetriNetUnfolder]: 10031/20181 cut-off events. [2022-11-25 15:52:22,935 INFO L131 PetriNetUnfolder]: For 197742/197742 co-relation queries the response was YES. [2022-11-25 15:52:23,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127528 conditions, 20181 events. 10031/20181 cut-off events. For 197742/197742 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 161221 event pairs, 2473 based on Foata normal form. 26/20207 useless extension candidates. Maximal degree in co-relation 127392. Up to 7677 conditions per place. [2022-11-25 15:52:23,182 INFO L137 encePairwiseOnDemand]: 153/174 looper letters, 1007 selfloop transitions, 282 changer transitions 9/1298 dead transitions. [2022-11-25 15:52:23,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 1298 transitions, 21390 flow [2022-11-25 15:52:23,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 15:52:23,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-25 15:52:23,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1020 transitions. [2022-11-25 15:52:23,186 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.36637931034482757 [2022-11-25 15:52:23,186 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1020 transitions. [2022-11-25 15:52:23,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1020 transitions. [2022-11-25 15:52:23,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:52:23,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1020 transitions. [2022-11-25 15:52:23,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 63.75) internal successors, (1020), 16 states have internal predecessors, (1020), 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) [2022-11-25 15:52:23,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 174.0) internal successors, (2958), 17 states have internal predecessors, (2958), 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) [2022-11-25 15:52:23,193 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 174.0) internal successors, (2958), 17 states have internal predecessors, (2958), 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) [2022-11-25 15:52:23,193 INFO L175 Difference]: Start difference. First operand has 240 places, 746 transitions, 12595 flow. Second operand 16 states and 1020 transitions. [2022-11-25 15:52:23,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 1298 transitions, 21390 flow [2022-11-25 15:52:24,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 1298 transitions, 20806 flow, removed 271 selfloop flow, removed 2 redundant places. [2022-11-25 15:52:24,550 INFO L231 Difference]: Finished difference. Result has 261 places, 876 transitions, 15135 flow [2022-11-25 15:52:24,551 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=12085, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=746, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=15135, PETRI_PLACES=261, PETRI_TRANSITIONS=876} [2022-11-25 15:52:24,551 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 220 predicate places. [2022-11-25 15:52:24,551 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 876 transitions, 15135 flow [2022-11-25 15:52:24,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 49.32258064516129) internal successors, (1529), 31 states have internal predecessors, (1529), 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) [2022-11-25 15:52:24,551 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:52:24,551 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:52:24,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 15:52:24,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-25 15:52:24,754 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:52:24,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:52:24,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1625230162, now seen corresponding path program 1 times [2022-11-25 15:52:24,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:52:24,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378461727] [2022-11-25 15:52:24,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:52:24,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:52:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:26,201 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:52:26,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:52:26,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378461727] [2022-11-25 15:52:26,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378461727] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:52:26,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646644317] [2022-11-25 15:52:26,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:52:26,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:52:26,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:52:26,219 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:52:26,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 15:52:26,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:52:26,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-25 15:52:26,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:52:26,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 15:52:26,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:52:26,983 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 21 treesize of output 20 [2022-11-25 15:52:27,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:52:27,009 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 21 treesize of output 20 [2022-11-25 15:52:27,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:52:27,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:52:27,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:52:27,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-25 15:52:27,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:52:27,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:52:27,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-25 15:52:27,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:52:27,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:52:27,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:52:27,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:52:27,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:52:27,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-11-25 15:52:27,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:52:27,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:52:27,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:52:27,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-11-25 15:52:27,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:52:27,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:52:27,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:52:27,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:52:27,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:52:27,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:52:27,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:52:27,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2022-11-25 15:52:27,446 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:52:27,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:52:33,679 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:52:33,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646644317] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:52:33,680 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:52:33,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 32 [2022-11-25 15:52:33,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511880049] [2022-11-25 15:52:33,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:52:33,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-25 15:52:33,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:52:33,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-25 15:52:33,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=885, Unknown=0, NotChecked=0, Total=1056 [2022-11-25 15:52:47,191 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 174 [2022-11-25 15:52:47,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 876 transitions, 15135 flow. Second operand has 33 states, 33 states have (on average 75.24242424242425) internal successors, (2483), 33 states have internal predecessors, (2483), 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) [2022-11-25 15:52:47,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:52:47,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 174 [2022-11-25 15:52:47,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:53:14,589 INFO L130 PetriNetUnfolder]: 12883/27931 cut-off events. [2022-11-25 15:53:14,589 INFO L131 PetriNetUnfolder]: For 302599/303918 co-relation queries the response was YES. [2022-11-25 15:53:14,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180878 conditions, 27931 events. 12883/27931 cut-off events. For 302599/303918 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 255353 event pairs, 1712 based on Foata normal form. 161/27986 useless extension candidates. Maximal degree in co-relation 180732. Up to 6722 conditions per place. [2022-11-25 15:53:14,953 INFO L137 encePairwiseOnDemand]: 156/174 looper letters, 1823 selfloop transitions, 519 changer transitions 25/2527 dead transitions. [2022-11-25 15:53:14,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 2527 transitions, 42111 flow [2022-11-25 15:53:14,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-25 15:53:14,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-25 15:53:14,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 2918 transitions. [2022-11-25 15:53:14,958 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4932386747802569 [2022-11-25 15:53:14,958 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 2918 transitions. [2022-11-25 15:53:14,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 2918 transitions. [2022-11-25 15:53:14,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:53:14,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 2918 transitions. [2022-11-25 15:53:14,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 85.82352941176471) internal successors, (2918), 34 states have internal predecessors, (2918), 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) [2022-11-25 15:53:14,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 174.0) internal successors, (6090), 35 states have internal predecessors, (6090), 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) [2022-11-25 15:53:14,975 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 174.0) internal successors, (6090), 35 states have internal predecessors, (6090), 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) [2022-11-25 15:53:14,975 INFO L175 Difference]: Start difference. First operand has 261 places, 876 transitions, 15135 flow. Second operand 34 states and 2918 transitions. [2022-11-25 15:53:14,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 2527 transitions, 42111 flow [2022-11-25 15:53:18,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 2527 transitions, 41450 flow, removed 255 selfloop flow, removed 5 redundant places. [2022-11-25 15:53:18,264 INFO L231 Difference]: Finished difference. Result has 315 places, 1271 transitions, 23700 flow [2022-11-25 15:53:18,265 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=14844, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=876, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=636, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=23700, PETRI_PLACES=315, PETRI_TRANSITIONS=1271} [2022-11-25 15:53:18,265 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 274 predicate places. [2022-11-25 15:53:18,265 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 1271 transitions, 23700 flow [2022-11-25 15:53:18,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 75.24242424242425) internal successors, (2483), 33 states have internal predecessors, (2483), 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) [2022-11-25 15:53:18,266 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:53:18,266 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:53:18,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-25 15:53:18,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-25 15:53:18,473 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:53:18,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:53:18,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1057648829, now seen corresponding path program 3 times [2022-11-25 15:53:18,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:53:18,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563183320] [2022-11-25 15:53:18,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:53:18,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:53:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:53:19,913 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:53:19,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:53:19,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563183320] [2022-11-25 15:53:19,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563183320] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:53:19,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630195170] [2022-11-25 15:53:19,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 15:53:19,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:53:19,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:53:19,915 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:53:19,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-25 15:53:20,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-25 15:53:20,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:53:20,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-25 15:53:20,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:53:20,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 15:53:20,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:20,490 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 21 treesize of output 20 [2022-11-25 15:53:20,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:20,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:20,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-25 15:53:20,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:20,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:20,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:20,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-11-25 15:53:20,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:20,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:20,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:20,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:20,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:20,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:20,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:20,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2022-11-25 15:53:20,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:20,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:20,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:20,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:20,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:20,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:20,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:20,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 56 [2022-11-25 15:53:20,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:20,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:20,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:20,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:20,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:20,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:20,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:20,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 56 [2022-11-25 15:53:20,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:20,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:20,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:20,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:20,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:20,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:20,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:20,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 56 [2022-11-25 15:53:21,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:21,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:21,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:21,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:21,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:21,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:21,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:53:21,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2022-11-25 15:53:21,147 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:53:21,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:53:44,482 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:53:44,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630195170] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:53:44,482 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:53:44,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 32 [2022-11-25 15:53:44,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167431381] [2022-11-25 15:53:44,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:53:44,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-25 15:53:44,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:53:44,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-25 15:53:44,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=870, Unknown=6, NotChecked=0, Total=1056 [2022-11-25 15:53:45,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:53:48,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:53:55,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:53:58,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:54:01,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:54:02,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:54:05,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:54:07,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:54:09,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:54:11,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:54:15,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:54:16,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:54:19,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:54:21,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:54:27,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:54:30,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:54:33,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:54:36,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:54:38,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:54:40,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:54:42,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:54:44,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:54:48,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:54:51,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:54:54,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:54:57,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:55:03,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:55:07,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:55:07,514 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 174 [2022-11-25 15:55:07,515 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 1271 transitions, 23700 flow. Second operand has 33 states, 33 states have (on average 51.121212121212125) internal successors, (1687), 33 states have internal predecessors, (1687), 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) [2022-11-25 15:55:07,516 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:55:07,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 174 [2022-11-25 15:55:07,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:55:48,634 INFO L130 PetriNetUnfolder]: 20420/41003 cut-off events. [2022-11-25 15:55:48,635 INFO L131 PetriNetUnfolder]: For 587609/587609 co-relation queries the response was YES. [2022-11-25 15:55:49,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295482 conditions, 41003 events. 20420/41003 cut-off events. For 587609/587609 co-relation queries the response was YES. Maximal size of possible extension queue 878. Compared 366367 event pairs, 3774 based on Foata normal form. 55/41058 useless extension candidates. Maximal degree in co-relation 295310. Up to 12726 conditions per place. [2022-11-25 15:55:49,664 INFO L137 encePairwiseOnDemand]: 156/174 looper letters, 2390 selfloop transitions, 756 changer transitions 40/3186 dead transitions. [2022-11-25 15:55:49,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 3186 transitions, 57706 flow [2022-11-25 15:55:49,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-25 15:55:49,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-25 15:55:49,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2016 transitions. [2022-11-25 15:55:49,671 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.38620689655172413 [2022-11-25 15:55:49,671 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2016 transitions. [2022-11-25 15:55:49,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2016 transitions. [2022-11-25 15:55:49,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:55:49,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2016 transitions. [2022-11-25 15:55:49,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 67.2) internal successors, (2016), 30 states have internal predecessors, (2016), 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) [2022-11-25 15:55:49,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 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) [2022-11-25 15:55:49,689 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 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) [2022-11-25 15:55:49,689 INFO L175 Difference]: Start difference. First operand has 315 places, 1271 transitions, 23700 flow. Second operand 30 states and 2016 transitions. [2022-11-25 15:55:49,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 3186 transitions, 57706 flow [2022-11-25 15:55:57,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 3186 transitions, 56829 flow, removed 438 selfloop flow, removed 1 redundant places. [2022-11-25 15:55:57,537 INFO L231 Difference]: Finished difference. Result has 362 places, 1639 transitions, 33476 flow [2022-11-25 15:55:57,538 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=23203, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=412, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=748, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=33476, PETRI_PLACES=362, PETRI_TRANSITIONS=1639} [2022-11-25 15:55:57,538 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 321 predicate places. [2022-11-25 15:55:57,538 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 1639 transitions, 33476 flow [2022-11-25 15:55:57,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 51.121212121212125) internal successors, (1687), 33 states have internal predecessors, (1687), 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) [2022-11-25 15:55:57,539 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:55:57,539 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:55:57,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-25 15:55:57,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-25 15:55:57,740 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:55:57,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:55:57,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1658781438, now seen corresponding path program 3 times [2022-11-25 15:55:57,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:55:57,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767590273] [2022-11-25 15:55:57,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:55:57,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:55:57,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:55:58,520 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:55:58,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:55:58,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767590273] [2022-11-25 15:55:58,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767590273] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:55:58,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934526149] [2022-11-25 15:55:58,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 15:55:58,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:55:58,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:55:58,522 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:55:58,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f750ae-0e39-41e2-9a05-2ac2f0333279/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-25 15:55:58,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-25 15:55:58,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:55:58,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-25 15:55:58,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:55:59,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 15:55:59,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:55:59,290 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 21 treesize of output 20 [2022-11-25 15:55:59,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:55:59,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:55:59,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-25 15:55:59,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:55:59,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:55:59,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:55:59,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-11-25 15:55:59,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:55:59,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:55:59,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:55:59,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:55:59,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:55:59,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:55:59,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:55:59,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2022-11-25 15:55:59,756 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:55:59,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:56:10,037 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:56:10,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934526149] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:56:10,037 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:56:10,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2022-11-25 15:56:10,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337141476] [2022-11-25 15:56:10,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:56:10,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-25 15:56:10,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:56:10,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-25 15:56:10,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=808, Unknown=2, NotChecked=0, Total=992 [2022-11-25 15:56:11,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:56:13,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:56:15,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:56:17,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:56:19,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:56:22,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:56:24,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:56:27,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:56:31,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:56:33,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:56:35,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:56:38,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:56:40,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:56:43,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:56:45,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:56:47,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:56:49,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:56:51,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:56:54,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:56:55,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:56:58,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:57:00,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 15:57:00,520 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 174 [2022-11-25 15:57:00,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 1639 transitions, 33476 flow. Second operand has 32 states, 32 states have (on average 49.21875) internal successors, (1575), 32 states have internal predecessors, (1575), 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) [2022-11-25 15:57:00,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:57:00,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 174 [2022-11-25 15:57:00,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand