./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.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_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/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_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/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_0d517ae9-d6a5-4120-8416-045d742a6e9a/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 9e83a031749850377e0f1ecd2c361048b8f87f697f146600048034d31c93bd9a --- 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 17:20:18,978 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:20:18,979 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:20:19,000 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:20:19,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:20:19,001 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:20:19,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:20:19,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:20:19,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:20:19,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:20:19,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:20:19,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:20:19,010 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:20:19,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:20:19,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:20:19,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:20:19,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:20:19,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:20:19,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:20:19,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:20:19,021 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:20:19,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:20:19,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:20:19,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:20:19,028 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:20:19,029 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:20:19,029 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:20:19,030 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:20:19,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:20:19,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:20:19,032 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:20:19,033 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:20:19,034 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:20:19,035 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:20:19,036 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:20:19,036 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:20:19,037 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:20:19,037 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:20:19,038 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:20:19,039 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:20:19,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:20:19,040 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-25 17:20:19,086 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:20:19,086 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:20:19,086 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:20:19,087 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:20:19,087 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:20:19,088 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:20:19,088 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:20:19,089 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:20:19,089 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:20:19,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:20:19,089 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:20:19,090 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:20:19,090 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:20:19,090 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:20:19,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:20:19,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:20:19,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:20:19,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:20:19,097 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-25 17:20:19,097 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:20:19,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:20:19,097 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:20:19,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:20:19,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:20:19,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:20:19,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:20:19,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:20:19,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:20:19,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:20:19,101 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:20:19,101 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:20:19,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:20:19,101 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:20:19,101 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:20:19,102 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:20:19,102 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:20:19,103 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_0d517ae9-d6a5-4120-8416-045d742a6e9a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e83a031749850377e0f1ecd2c361048b8f87f697f146600048034d31c93bd9a [2022-11-25 17:20:19,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:20:19,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:20:19,392 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:20:19,393 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:20:19,394 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:20:19,395 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i [2022-11-25 17:20:22,493 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:20:22,765 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:20:22,766 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i [2022-11-25 17:20:22,783 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/data/6dd5d5360/acaee31bb56f4f96af784b1e635fa90d/FLAG6de0b08fc [2022-11-25 17:20:22,800 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/data/6dd5d5360/acaee31bb56f4f96af784b1e635fa90d [2022-11-25 17:20:22,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:20:22,816 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:20:22,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:20:22,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:20:22,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:20:22,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:20:22" (1/1) ... [2022-11-25 17:20:22,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4392e3ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:20:22, skipping insertion in model container [2022-11-25 17:20:22,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:20:22" (1/1) ... [2022-11-25 17:20:22,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:20:22,905 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:20:23,391 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:20:23,417 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:20:23,463 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:20:23,548 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:20:23,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:20:23 WrapperNode [2022-11-25 17:20:23,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:20:23,551 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:20:23,551 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:20:23,551 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:20:23,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:20:23" (1/1) ... [2022-11-25 17:20:23,587 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:20:23" (1/1) ... [2022-11-25 17:20:23,637 INFO L138 Inliner]: procedures = 262, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 115 [2022-11-25 17:20:23,638 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:20:23,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:20:23,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:20:23,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:20:23,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:20:23" (1/1) ... [2022-11-25 17:20:23,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:20:23" (1/1) ... [2022-11-25 17:20:23,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:20:23" (1/1) ... [2022-11-25 17:20:23,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:20:23" (1/1) ... [2022-11-25 17:20:23,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:20:23" (1/1) ... [2022-11-25 17:20:23,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:20:23" (1/1) ... [2022-11-25 17:20:23,693 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:20:23" (1/1) ... [2022-11-25 17:20:23,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:20:23" (1/1) ... [2022-11-25 17:20:23,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:20:23,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:20:23,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:20:23,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:20:23,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:20:23" (1/1) ... [2022-11-25 17:20:23,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:20:23,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:20:23,756 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:20:23,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:20:23,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:20:23,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:20:23,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:20:23,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:20:23,807 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 17:20:23,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:20:23,807 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-25 17:20:23,808 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-25 17:20:23,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:20:23,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:20:23,810 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 17:20:24,039 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:20:24,041 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:20:24,357 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:20:24,365 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:20:24,365 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-25 17:20:24,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:20:24 BoogieIcfgContainer [2022-11-25 17:20:24,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:20:24,370 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:20:24,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:20:24,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:20:24,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:20:22" (1/3) ... [2022-11-25 17:20:24,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c906c06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:20:24, skipping insertion in model container [2022-11-25 17:20:24,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:20:23" (2/3) ... [2022-11-25 17:20:24,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c906c06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:20:24, skipping insertion in model container [2022-11-25 17:20:24,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:20:24" (3/3) ... [2022-11-25 17:20:24,387 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_05-funloop_hard2.i [2022-11-25 17:20:24,406 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:20:24,415 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:20:24,415 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-25 17:20:24,415 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:20:24,492 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 17:20:24,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 128 transitions, 261 flow [2022-11-25 17:20:24,702 INFO L130 PetriNetUnfolder]: 6/127 cut-off events. [2022-11-25 17:20:24,702 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:20:24,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 127 events. 6/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 230 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2022-11-25 17:20:24,713 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 128 transitions, 261 flow [2022-11-25 17:20:24,723 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 127 transitions, 257 flow [2022-11-25 17:20:24,727 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:20:24,742 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 125 places, 127 transitions, 257 flow [2022-11-25 17:20:24,745 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 125 places, 127 transitions, 257 flow [2022-11-25 17:20:24,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 127 transitions, 257 flow [2022-11-25 17:20:24,783 INFO L130 PetriNetUnfolder]: 6/127 cut-off events. [2022-11-25 17:20:24,783 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:20:24,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 127 events. 6/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 230 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2022-11-25 17:20:24,788 INFO L119 LiptonReduction]: Number of co-enabled transitions 4864 [2022-11-25 17:20:27,363 INFO L134 LiptonReduction]: Checked pairs total: 16434 [2022-11-25 17:20:27,363 INFO L136 LiptonReduction]: Total number of compositions: 75 [2022-11-25 17:20:27,389 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:20:27,396 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;@412b90fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:20:27,396 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-25 17:20:27,417 INFO L130 PetriNetUnfolder]: 1/25 cut-off events. [2022-11-25 17:20:27,417 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:20:27,417 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:20:27,418 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:20:27,419 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-25 17:20:27,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:20:27,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1857495920, now seen corresponding path program 1 times [2022-11-25 17:20:27,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:20:27,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329458411] [2022-11-25 17:20:27,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:20:27,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:20:27,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:20:27,754 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 17:20:27,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:20:27,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329458411] [2022-11-25 17:20:27,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329458411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:20:27,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:20:27,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:20:27,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381616375] [2022-11-25 17:20:27,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:20:27,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:20:27,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:20:27,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:20:27,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:20:27,818 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 203 [2022-11-25 17:20:27,823 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 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 17:20:27,823 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:20:27,823 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 203 [2022-11-25 17:20:27,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:20:27,981 INFO L130 PetriNetUnfolder]: 106/409 cut-off events. [2022-11-25 17:20:27,982 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:20:27,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 409 events. 106/409 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2232 event pairs, 84 based on Foata normal form. 0/376 useless extension candidates. Maximal degree in co-relation 612. Up to 213 conditions per place. [2022-11-25 17:20:27,991 INFO L137 encePairwiseOnDemand]: 200/203 looper letters, 24 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2022-11-25 17:20:27,991 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 56 transitions, 167 flow [2022-11-25 17:20:27,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:20:27,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:20:28,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 387 transitions. [2022-11-25 17:20:28,016 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6354679802955665 [2022-11-25 17:20:28,017 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 387 transitions. [2022-11-25 17:20:28,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 387 transitions. [2022-11-25 17:20:28,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:20:28,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 387 transitions. [2022-11-25 17:20:28,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:20:28,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 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 17:20:28,037 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 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 17:20:28,039 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 113 flow. Second operand 3 states and 387 transitions. [2022-11-25 17:20:28,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 56 transitions, 167 flow [2022-11-25 17:20:28,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 56 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:20:28,044 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 124 flow [2022-11-25 17:20:28,046 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2022-11-25 17:20:28,050 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2022-11-25 17:20:28,050 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 124 flow [2022-11-25 17:20:28,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 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 17:20:28,051 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:20:28,051 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:20:28,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:20:28,052 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-25 17:20:28,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:20:28,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1291019682, now seen corresponding path program 1 times [2022-11-25 17:20:28,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:20:28,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435837343] [2022-11-25 17:20:28,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:20:28,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:20:28,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:20:28,138 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 17:20:28,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:20:28,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435837343] [2022-11-25 17:20:28,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435837343] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:20:28,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475686374] [2022-11-25 17:20:28,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:20:28,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:20:28,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:20:28,143 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:20:28,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:20:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:20:28,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:20:28,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:20:28,350 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 17:20:28,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:20:28,377 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 17:20:28,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475686374] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:20:28,378 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:20:28,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-25 17:20:28,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874088969] [2022-11-25 17:20:28,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:20:28,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:20:28,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:20:28,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:20:28,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:20:28,405 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 203 [2022-11-25 17:20:28,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 124 flow. Second operand has 7 states, 7 states have (on average 120.71428571428571) internal successors, (845), 7 states have internal predecessors, (845), 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 17:20:28,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:20:28,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 203 [2022-11-25 17:20:28,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:20:28,571 INFO L130 PetriNetUnfolder]: 106/412 cut-off events. [2022-11-25 17:20:28,571 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:20:28,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 642 conditions, 412 events. 106/412 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2219 event pairs, 84 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 631. Up to 213 conditions per place. [2022-11-25 17:20:28,574 INFO L137 encePairwiseOnDemand]: 200/203 looper letters, 24 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2022-11-25 17:20:28,574 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 59 transitions, 194 flow [2022-11-25 17:20:28,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:20:28,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:20:28,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 746 transitions. [2022-11-25 17:20:28,577 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6124794745484401 [2022-11-25 17:20:28,577 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 746 transitions. [2022-11-25 17:20:28,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 746 transitions. [2022-11-25 17:20:28,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:20:28,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 746 transitions. [2022-11-25 17:20:28,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 124.33333333333333) internal successors, (746), 6 states have internal predecessors, (746), 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 17:20:28,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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 17:20:28,584 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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 17:20:28,584 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 124 flow. Second operand 6 states and 746 transitions. [2022-11-25 17:20:28,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 59 transitions, 194 flow [2022-11-25 17:20:28,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 59 transitions, 190 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 17:20:28,586 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 156 flow [2022-11-25 17:20:28,586 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=156, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2022-11-25 17:20:28,587 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 9 predicate places. [2022-11-25 17:20:28,587 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 156 flow [2022-11-25 17:20:28,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 120.71428571428571) internal successors, (845), 7 states have internal predecessors, (845), 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 17:20:28,588 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:20:28,588 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:20:28,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:20:28,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:20:28,794 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-25 17:20:28,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:20:28,795 INFO L85 PathProgramCache]: Analyzing trace with hash 431003887, now seen corresponding path program 2 times [2022-11-25 17:20:28,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:20:28,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739490889] [2022-11-25 17:20:28,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:20:28,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:20:28,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:20:29,006 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 17:20:29,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:20:29,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739490889] [2022-11-25 17:20:29,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739490889] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:20:29,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420826449] [2022-11-25 17:20:29,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:20:29,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:20:29,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:20:29,015 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:20:29,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:20:29,109 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 17:20:29,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:20:29,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-25 17:20:29,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:20:29,209 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 17:20:29,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:20:29,252 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 17:20:29,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:20:29,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:20:29,303 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:20:29,303 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 17:20:29,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:20:29,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:20:29,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:20:29,354 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:20:29,355 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 17:20:29,391 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 17:20:29,392 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:20:29,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420826449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:20:29,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:20:29,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 13 [2022-11-25 17:20:29,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503498131] [2022-11-25 17:20:29,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:20:29,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:20:29,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:20:29,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:20:29,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-11-25 17:20:29,793 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 203 [2022-11-25 17:20:29,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 156 flow. Second operand has 9 states, 9 states have (on average 98.33333333333333) internal successors, (885), 9 states have internal predecessors, (885), 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 17:20:29,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:20:29,795 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 203 [2022-11-25 17:20:29,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:20:30,457 INFO L130 PetriNetUnfolder]: 691/1607 cut-off events. [2022-11-25 17:20:30,458 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:20:30,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3020 conditions, 1607 events. 691/1607 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 8316 event pairs, 293 based on Foata normal form. 0/1497 useless extension candidates. Maximal degree in co-relation 2987. Up to 632 conditions per place. [2022-11-25 17:20:30,468 INFO L137 encePairwiseOnDemand]: 187/203 looper letters, 135 selfloop transitions, 27 changer transitions 0/175 dead transitions. [2022-11-25 17:20:30,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 175 transitions, 712 flow [2022-11-25 17:20:30,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:20:30,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 17:20:30,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1130 transitions. [2022-11-25 17:20:30,472 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5566502463054187 [2022-11-25 17:20:30,472 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1130 transitions. [2022-11-25 17:20:30,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1130 transitions. [2022-11-25 17:20:30,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:20:30,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1130 transitions. [2022-11-25 17:20:30,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 113.0) internal successors, (1130), 10 states have internal predecessors, (1130), 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 17:20:30,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 203.0) internal successors, (2233), 11 states have internal predecessors, (2233), 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 17:20:30,482 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 203.0) internal successors, (2233), 11 states have internal predecessors, (2233), 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 17:20:30,482 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 156 flow. Second operand 10 states and 1130 transitions. [2022-11-25 17:20:30,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 175 transitions, 712 flow [2022-11-25 17:20:30,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 175 transitions, 698 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-25 17:20:30,490 INFO L231 Difference]: Finished difference. Result has 79 places, 84 transitions, 346 flow [2022-11-25 17:20:30,493 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=346, PETRI_PLACES=79, PETRI_TRANSITIONS=84} [2022-11-25 17:20:30,495 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 23 predicate places. [2022-11-25 17:20:30,496 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 84 transitions, 346 flow [2022-11-25 17:20:30,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 98.33333333333333) internal successors, (885), 9 states have internal predecessors, (885), 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 17:20:30,497 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:20:30,498 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:20:30,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:20:30,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:20:30,705 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-25 17:20:30,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:20:30,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1995689904, now seen corresponding path program 1 times [2022-11-25 17:20:30,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:20:30,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675342438] [2022-11-25 17:20:30,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:20:30,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:20:30,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:20:30,806 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 17:20:30,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:20:30,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675342438] [2022-11-25 17:20:30,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675342438] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:20:30,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795371098] [2022-11-25 17:20:30,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:20:30,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:20:30,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:20:30,809 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:20:30,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 17:20:30,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:20:30,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:20:30,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:20:30,930 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 17:20:30,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:20:30,994 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 17:20:30,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795371098] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:20:30,995 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:20:30,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-25 17:20:30,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496347659] [2022-11-25 17:20:30,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:20:30,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 17:20:30,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:20:30,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 17:20:30,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:20:31,034 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 203 [2022-11-25 17:20:31,057 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 84 transitions, 346 flow. Second operand has 13 states, 13 states have (on average 120.38461538461539) internal successors, (1565), 13 states have internal predecessors, (1565), 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 17:20:31,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:20:31,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 203 [2022-11-25 17:20:31,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:20:31,304 INFO L130 PetriNetUnfolder]: 305/1118 cut-off events. [2022-11-25 17:20:31,305 INFO L131 PetriNetUnfolder]: For 362/365 co-relation queries the response was YES. [2022-11-25 17:20:31,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2354 conditions, 1118 events. 305/1118 cut-off events. For 362/365 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 6562 event pairs, 207 based on Foata normal form. 6/1082 useless extension candidates. Maximal degree in co-relation 2296. Up to 545 conditions per place. [2022-11-25 17:20:31,312 INFO L137 encePairwiseOnDemand]: 200/203 looper letters, 28 selfloop transitions, 11 changer transitions 0/90 dead transitions. [2022-11-25 17:20:31,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 90 transitions, 460 flow [2022-11-25 17:20:31,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 17:20:31,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 17:20:31,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1469 transitions. [2022-11-25 17:20:31,317 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6030377668308703 [2022-11-25 17:20:31,317 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1469 transitions. [2022-11-25 17:20:31,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1469 transitions. [2022-11-25 17:20:31,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:20:31,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1469 transitions. [2022-11-25 17:20:31,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 122.41666666666667) internal successors, (1469), 12 states have internal predecessors, (1469), 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 17:20:31,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 203.0) internal successors, (2639), 13 states have internal predecessors, (2639), 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 17:20:31,326 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 203.0) internal successors, (2639), 13 states have internal predecessors, (2639), 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 17:20:31,326 INFO L175 Difference]: Start difference. First operand has 79 places, 84 transitions, 346 flow. Second operand 12 states and 1469 transitions. [2022-11-25 17:20:31,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 90 transitions, 460 flow [2022-11-25 17:20:31,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 90 transitions, 459 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:20:31,332 INFO L231 Difference]: Finished difference. Result has 95 places, 90 transitions, 429 flow [2022-11-25 17:20:31,332 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=429, PETRI_PLACES=95, PETRI_TRANSITIONS=90} [2022-11-25 17:20:31,333 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 39 predicate places. [2022-11-25 17:20:31,333 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 90 transitions, 429 flow [2022-11-25 17:20:31,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 120.38461538461539) internal successors, (1565), 13 states have internal predecessors, (1565), 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 17:20:31,334 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:20:31,334 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:20:31,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 17:20:31,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:20:31,540 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-25 17:20:31,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:20:31,540 INFO L85 PathProgramCache]: Analyzing trace with hash -187274768, now seen corresponding path program 2 times [2022-11-25 17:20:31,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:20:31,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91444874] [2022-11-25 17:20:31,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:20:31,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:20:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:20:31,920 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 17:20:31,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:20:31,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91444874] [2022-11-25 17:20:31,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91444874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:20:31,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:20:31,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:20:31,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423521447] [2022-11-25 17:20:31,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:20:31,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:20:31,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:20:31,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:20:31,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:20:32,154 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 203 [2022-11-25 17:20:32,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 90 transitions, 429 flow. Second operand has 6 states, 6 states have (on average 105.0) internal successors, (630), 6 states have internal predecessors, (630), 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 17:20:32,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:20:32,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 203 [2022-11-25 17:20:32,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:20:32,876 INFO L130 PetriNetUnfolder]: 977/2350 cut-off events. [2022-11-25 17:20:32,876 INFO L131 PetriNetUnfolder]: For 2165/2179 co-relation queries the response was YES. [2022-11-25 17:20:32,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5852 conditions, 2350 events. 977/2350 cut-off events. For 2165/2179 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 13821 event pairs, 394 based on Foata normal form. 0/2258 useless extension candidates. Maximal degree in co-relation 5770. Up to 1488 conditions per place. [2022-11-25 17:20:32,894 INFO L137 encePairwiseOnDemand]: 188/203 looper letters, 127 selfloop transitions, 46 changer transitions 0/192 dead transitions. [2022-11-25 17:20:32,894 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 192 transitions, 1083 flow [2022-11-25 17:20:32,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:20:32,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:20:32,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 746 transitions. [2022-11-25 17:20:32,897 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6124794745484401 [2022-11-25 17:20:32,897 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 746 transitions. [2022-11-25 17:20:32,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 746 transitions. [2022-11-25 17:20:32,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:20:32,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 746 transitions. [2022-11-25 17:20:32,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 124.33333333333333) internal successors, (746), 6 states have internal predecessors, (746), 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 17:20:32,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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 17:20:32,903 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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 17:20:32,903 INFO L175 Difference]: Start difference. First operand has 95 places, 90 transitions, 429 flow. Second operand 6 states and 746 transitions. [2022-11-25 17:20:32,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 192 transitions, 1083 flow [2022-11-25 17:20:32,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 192 transitions, 1035 flow, removed 19 selfloop flow, removed 5 redundant places. [2022-11-25 17:20:32,914 INFO L231 Difference]: Finished difference. Result has 100 places, 131 transitions, 709 flow [2022-11-25 17:20:32,915 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=709, PETRI_PLACES=100, PETRI_TRANSITIONS=131} [2022-11-25 17:20:32,918 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 44 predicate places. [2022-11-25 17:20:32,918 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 131 transitions, 709 flow [2022-11-25 17:20:32,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 105.0) internal successors, (630), 6 states have internal predecessors, (630), 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 17:20:32,919 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:20:32,919 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 17:20:32,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:20:32,919 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-25 17:20:32,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:20:32,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1388981381, now seen corresponding path program 1 times [2022-11-25 17:20:32,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:20:32,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677278228] [2022-11-25 17:20:32,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:20:32,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:20:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:20:33,306 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 17:20:33,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:20:33,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677278228] [2022-11-25 17:20:33,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677278228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:20:33,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:20:33,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:20:33,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64421005] [2022-11-25 17:20:33,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:20:33,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:20:33,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:20:33,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:20:33,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:20:33,458 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 203 [2022-11-25 17:20:33,459 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 131 transitions, 709 flow. Second operand has 6 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 17:20:33,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:20:33,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 203 [2022-11-25 17:20:33,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:20:34,371 INFO L130 PetriNetUnfolder]: 1617/3419 cut-off events. [2022-11-25 17:20:34,371 INFO L131 PetriNetUnfolder]: For 4656/4688 co-relation queries the response was YES. [2022-11-25 17:20:34,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10819 conditions, 3419 events. 1617/3419 cut-off events. For 4656/4688 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 19466 event pairs, 555 based on Foata normal form. 0/3295 useless extension candidates. Maximal degree in co-relation 10757. Up to 2681 conditions per place. [2022-11-25 17:20:34,397 INFO L137 encePairwiseOnDemand]: 180/203 looper letters, 170 selfloop transitions, 89 changer transitions 8/274 dead transitions. [2022-11-25 17:20:34,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 274 transitions, 1793 flow [2022-11-25 17:20:34,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:20:34,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:20:34,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 725 transitions. [2022-11-25 17:20:34,400 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2022-11-25 17:20:34,400 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 725 transitions. [2022-11-25 17:20:34,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 725 transitions. [2022-11-25 17:20:34,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:20:34,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 725 transitions. [2022-11-25 17:20:34,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 120.83333333333333) internal successors, (725), 6 states have internal predecessors, (725), 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 17:20:34,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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 17:20:34,405 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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 17:20:34,405 INFO L175 Difference]: Start difference. First operand has 100 places, 131 transitions, 709 flow. Second operand 6 states and 725 transitions. [2022-11-25 17:20:34,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 274 transitions, 1793 flow [2022-11-25 17:20:34,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 274 transitions, 1793 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:20:34,421 INFO L231 Difference]: Finished difference. Result has 110 places, 214 transitions, 1483 flow [2022-11-25 17:20:34,422 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1483, PETRI_PLACES=110, PETRI_TRANSITIONS=214} [2022-11-25 17:20:34,422 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 54 predicate places. [2022-11-25 17:20:34,423 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 214 transitions, 1483 flow [2022-11-25 17:20:34,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 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 17:20:34,423 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:20:34,423 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 17:20:34,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:20:34,424 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-25 17:20:34,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:20:34,424 INFO L85 PathProgramCache]: Analyzing trace with hash -568908740, now seen corresponding path program 1 times [2022-11-25 17:20:34,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:20:34,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304066334] [2022-11-25 17:20:34,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:20:34,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:20:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:20:34,728 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 17:20:34,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:20:34,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304066334] [2022-11-25 17:20:34,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304066334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:20:34,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:20:34,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:20:34,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999617984] [2022-11-25 17:20:34,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:20:34,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:20:34,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:20:34,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:20:34,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:20:34,874 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 203 [2022-11-25 17:20:34,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 214 transitions, 1483 flow. Second operand has 6 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 17:20:34,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:20:34,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 203 [2022-11-25 17:20:34,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:20:35,887 INFO L130 PetriNetUnfolder]: 1832/3823 cut-off events. [2022-11-25 17:20:35,887 INFO L131 PetriNetUnfolder]: For 9629/9709 co-relation queries the response was YES. [2022-11-25 17:20:35,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14678 conditions, 3823 events. 1832/3823 cut-off events. For 9629/9709 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 21979 event pairs, 612 based on Foata normal form. 0/3694 useless extension candidates. Maximal degree in co-relation 14611. Up to 3283 conditions per place. [2022-11-25 17:20:35,922 INFO L137 encePairwiseOnDemand]: 188/203 looper letters, 229 selfloop transitions, 72 changer transitions 0/306 dead transitions. [2022-11-25 17:20:35,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 306 transitions, 2704 flow [2022-11-25 17:20:35,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:20:35,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:20:35,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 678 transitions. [2022-11-25 17:20:35,925 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5566502463054187 [2022-11-25 17:20:35,925 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 678 transitions. [2022-11-25 17:20:35,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 678 transitions. [2022-11-25 17:20:35,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:20:35,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 678 transitions. [2022-11-25 17:20:35,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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 17:20:35,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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 17:20:35,931 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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 17:20:35,931 INFO L175 Difference]: Start difference. First operand has 110 places, 214 transitions, 1483 flow. Second operand 6 states and 678 transitions. [2022-11-25 17:20:35,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 306 transitions, 2704 flow [2022-11-25 17:20:35,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 306 transitions, 2572 flow, removed 66 selfloop flow, removed 0 redundant places. [2022-11-25 17:20:35,966 INFO L231 Difference]: Finished difference. Result has 120 places, 268 transitions, 2178 flow [2022-11-25 17:20:35,967 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=1375, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2178, PETRI_PLACES=120, PETRI_TRANSITIONS=268} [2022-11-25 17:20:35,968 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 64 predicate places. [2022-11-25 17:20:35,968 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 268 transitions, 2178 flow [2022-11-25 17:20:35,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 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 17:20:35,969 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:20:35,969 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 17:20:35,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:20:35,969 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-25 17:20:35,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:20:35,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1263771259, now seen corresponding path program 1 times [2022-11-25 17:20:35,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:20:35,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591742698] [2022-11-25 17:20:35,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:20:35,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:20:36,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:20:36,761 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 17:20:36,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:20:36,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591742698] [2022-11-25 17:20:36,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591742698] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:20:36,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753373097] [2022-11-25 17:20:36,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:20:36,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:20:36,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:20:36,764 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:20:36,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 17:20:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:20:36,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-25 17:20:36,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:20:36,988 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 17:20:37,011 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 17:20:37,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:20:37,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753373097] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:20:37,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:20:37,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2022-11-25 17:20:37,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541569354] [2022-11-25 17:20:37,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:20:37,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:20:37,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:20:37,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:20:37,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-25 17:20:37,254 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 203 [2022-11-25 17:20:37,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 268 transitions, 2178 flow. Second operand has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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 17:20:37,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:20:37,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 203 [2022-11-25 17:20:37,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:20:38,838 INFO L130 PetriNetUnfolder]: 2399/6036 cut-off events. [2022-11-25 17:20:38,839 INFO L131 PetriNetUnfolder]: For 19325/19567 co-relation queries the response was YES. [2022-11-25 17:20:38,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23357 conditions, 6036 events. 2399/6036 cut-off events. For 19325/19567 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 45059 event pairs, 304 based on Foata normal form. 20/5930 useless extension candidates. Maximal degree in co-relation 23285. Up to 1571 conditions per place. [2022-11-25 17:20:38,906 INFO L137 encePairwiseOnDemand]: 195/203 looper letters, 129 selfloop transitions, 12 changer transitions 0/348 dead transitions. [2022-11-25 17:20:38,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 348 transitions, 3083 flow [2022-11-25 17:20:38,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:20:38,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:20:38,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 732 transitions. [2022-11-25 17:20:38,909 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6009852216748769 [2022-11-25 17:20:38,909 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 732 transitions. [2022-11-25 17:20:38,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 732 transitions. [2022-11-25 17:20:38,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:20:38,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 732 transitions. [2022-11-25 17:20:38,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 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 17:20:38,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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 17:20:38,916 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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 17:20:38,916 INFO L175 Difference]: Start difference. First operand has 120 places, 268 transitions, 2178 flow. Second operand 6 states and 732 transitions. [2022-11-25 17:20:38,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 348 transitions, 3083 flow [2022-11-25 17:20:39,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 348 transitions, 2881 flow, removed 101 selfloop flow, removed 0 redundant places. [2022-11-25 17:20:39,102 INFO L231 Difference]: Finished difference. Result has 128 places, 278 transitions, 2095 flow [2022-11-25 17:20:39,102 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=1976, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2095, PETRI_PLACES=128, PETRI_TRANSITIONS=278} [2022-11-25 17:20:39,105 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 72 predicate places. [2022-11-25 17:20:39,105 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 278 transitions, 2095 flow [2022-11-25 17:20:39,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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 17:20:39,106 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:20:39,106 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 17:20:39,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 17:20:39,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:20:39,312 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-25 17:20:39,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:20:39,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1454603459, now seen corresponding path program 2 times [2022-11-25 17:20:39,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:20:39,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682725738] [2022-11-25 17:20:39,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:20:39,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:20:39,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:20:39,990 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 17:20:39,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:20:39,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682725738] [2022-11-25 17:20:39,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682725738] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:20:39,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486948720] [2022-11-25 17:20:39,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:20:39,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:20:39,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:20:39,993 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:20:40,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 17:20:40,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 17:20:40,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:20:40,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-25 17:20:40,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:20:40,162 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 17:20:40,212 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 17:20:40,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:20:40,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486948720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:20:40,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:20:40,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2022-11-25 17:20:40,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764147242] [2022-11-25 17:20:40,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:20:40,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:20:40,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:20:40,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:20:40,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-25 17:20:40,378 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 203 [2022-11-25 17:20:40,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 278 transitions, 2095 flow. Second operand has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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 17:20:40,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:20:40,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 203 [2022-11-25 17:20:40,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:20:42,058 INFO L130 PetriNetUnfolder]: 2681/6686 cut-off events. [2022-11-25 17:20:42,058 INFO L131 PetriNetUnfolder]: For 18785/19033 co-relation queries the response was YES. [2022-11-25 17:20:42,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25962 conditions, 6686 events. 2681/6686 cut-off events. For 18785/19033 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 51048 event pairs, 383 based on Foata normal form. 31/6628 useless extension candidates. Maximal degree in co-relation 25885. Up to 1878 conditions per place. [2022-11-25 17:20:42,120 INFO L137 encePairwiseOnDemand]: 196/203 looper letters, 116 selfloop transitions, 19 changer transitions 0/342 dead transitions. [2022-11-25 17:20:42,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 342 transitions, 2888 flow [2022-11-25 17:20:42,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:20:42,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:20:42,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 724 transitions. [2022-11-25 17:20:42,123 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5944170771756979 [2022-11-25 17:20:42,123 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 724 transitions. [2022-11-25 17:20:42,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 724 transitions. [2022-11-25 17:20:42,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:20:42,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 724 transitions. [2022-11-25 17:20:42,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 120.66666666666667) internal successors, (724), 6 states have internal predecessors, (724), 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 17:20:42,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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 17:20:42,128 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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 17:20:42,129 INFO L175 Difference]: Start difference. First operand has 128 places, 278 transitions, 2095 flow. Second operand 6 states and 724 transitions. [2022-11-25 17:20:42,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 342 transitions, 2888 flow [2022-11-25 17:20:42,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 342 transitions, 2887 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:20:42,195 INFO L231 Difference]: Finished difference. Result has 134 places, 287 transitions, 2236 flow [2022-11-25 17:20:42,195 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=2094, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2236, PETRI_PLACES=134, PETRI_TRANSITIONS=287} [2022-11-25 17:20:42,196 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 78 predicate places. [2022-11-25 17:20:42,196 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 287 transitions, 2236 flow [2022-11-25 17:20:42,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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 17:20:42,197 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:20:42,197 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 17:20:42,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 17:20:42,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:20:42,402 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-25 17:20:42,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:20:42,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1985537305, now seen corresponding path program 1 times [2022-11-25 17:20:42,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:20:42,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549899406] [2022-11-25 17:20:42,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:20:42,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:20:42,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:20:43,162 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 17:20:43,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:20:43,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549899406] [2022-11-25 17:20:43,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549899406] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:20:43,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443247963] [2022-11-25 17:20:43,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:20:43,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:20:43,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:20:43,164 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:20:43,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 17:20:43,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:20:43,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-25 17:20:43,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:20:43,361 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 17:20:43,416 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 17:20:43,416 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:20:43,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443247963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:20:43,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:20:43,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2022-11-25 17:20:43,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376197407] [2022-11-25 17:20:43,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:20:43,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:20:43,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:20:43,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:20:43,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-25 17:20:43,565 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 203 [2022-11-25 17:20:43,566 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 287 transitions, 2236 flow. Second operand has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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 17:20:43,566 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:20:43,566 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 203 [2022-11-25 17:20:43,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:20:44,834 INFO L130 PetriNetUnfolder]: 2367/6014 cut-off events. [2022-11-25 17:20:44,835 INFO L131 PetriNetUnfolder]: For 18222/18441 co-relation queries the response was YES. [2022-11-25 17:20:44,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23728 conditions, 6014 events. 2367/6014 cut-off events. For 18222/18441 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 45546 event pairs, 360 based on Foata normal form. 31/5967 useless extension candidates. Maximal degree in co-relation 23648. Up to 1710 conditions per place. [2022-11-25 17:20:44,903 INFO L137 encePairwiseOnDemand]: 196/203 looper letters, 118 selfloop transitions, 22 changer transitions 0/347 dead transitions. [2022-11-25 17:20:44,904 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 347 transitions, 3001 flow [2022-11-25 17:20:44,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:20:44,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:20:44,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 843 transitions. [2022-11-25 17:20:44,907 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5932441942294159 [2022-11-25 17:20:44,907 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 843 transitions. [2022-11-25 17:20:44,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 843 transitions. [2022-11-25 17:20:44,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:20:44,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 843 transitions. [2022-11-25 17:20:44,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 120.42857142857143) internal successors, (843), 7 states have internal predecessors, (843), 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 17:20:44,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 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 17:20:44,913 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 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 17:20:44,913 INFO L175 Difference]: Start difference. First operand has 134 places, 287 transitions, 2236 flow. Second operand 7 states and 843 transitions. [2022-11-25 17:20:44,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 347 transitions, 3001 flow [2022-11-25 17:20:44,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 347 transitions, 2987 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-25 17:20:44,961 INFO L231 Difference]: Finished difference. Result has 141 places, 290 transitions, 2326 flow [2022-11-25 17:20:44,962 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=2201, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2326, PETRI_PLACES=141, PETRI_TRANSITIONS=290} [2022-11-25 17:20:44,962 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 85 predicate places. [2022-11-25 17:20:44,962 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 290 transitions, 2326 flow [2022-11-25 17:20:44,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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 17:20:44,963 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:20:44,963 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 17:20:44,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 17:20:45,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 17:20:45,170 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-25 17:20:45,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:20:45,170 INFO L85 PathProgramCache]: Analyzing trace with hash 670021269, now seen corresponding path program 3 times [2022-11-25 17:20:45,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:20:45,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082660526] [2022-11-25 17:20:45,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:20:45,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:20:45,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:20:46,185 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 17:20:46,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:20:46,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082660526] [2022-11-25 17:20:46,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082660526] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:20:46,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426765712] [2022-11-25 17:20:46,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 17:20:46,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:20:46,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:20:46,191 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:20:46,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 17:20:46,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-25 17:20:46,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:20:46,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-25 17:20:46,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:20:46,408 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 17:20:46,524 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 17:20:46,526 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:20:46,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426765712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:20:46,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:20:46,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 14 [2022-11-25 17:20:46,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914633214] [2022-11-25 17:20:46,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:20:46,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:20:46,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:20:46,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:20:46,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-11-25 17:20:46,734 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 203 [2022-11-25 17:20:46,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 290 transitions, 2326 flow. Second operand has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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 17:20:46,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:20:46,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 203 [2022-11-25 17:20:46,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:20:48,351 INFO L130 PetriNetUnfolder]: 2450/6241 cut-off events. [2022-11-25 17:20:48,351 INFO L131 PetriNetUnfolder]: For 21313/21548 co-relation queries the response was YES. [2022-11-25 17:20:48,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25169 conditions, 6241 events. 2450/6241 cut-off events. For 21313/21548 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 50088 event pairs, 322 based on Foata normal form. 10/6154 useless extension candidates. Maximal degree in co-relation 25086. Up to 1646 conditions per place. [2022-11-25 17:20:48,445 INFO L137 encePairwiseOnDemand]: 196/203 looper letters, 130 selfloop transitions, 17 changer transitions 0/354 dead transitions. [2022-11-25 17:20:48,445 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 354 transitions, 3014 flow [2022-11-25 17:20:48,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:20:48,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:20:48,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 734 transitions. [2022-11-25 17:20:48,449 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6026272577996716 [2022-11-25 17:20:48,449 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 734 transitions. [2022-11-25 17:20:48,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 734 transitions. [2022-11-25 17:20:48,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:20:48,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 734 transitions. [2022-11-25 17:20:48,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 122.33333333333333) internal successors, (734), 6 states have internal predecessors, (734), 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 17:20:48,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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 17:20:48,456 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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 17:20:48,456 INFO L175 Difference]: Start difference. First operand has 141 places, 290 transitions, 2326 flow. Second operand 6 states and 734 transitions. [2022-11-25 17:20:48,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 354 transitions, 3014 flow [2022-11-25 17:20:48,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 354 transitions, 2974 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-11-25 17:20:48,541 INFO L231 Difference]: Finished difference. Result has 145 places, 293 transitions, 2370 flow [2022-11-25 17:20:48,542 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=2247, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2370, PETRI_PLACES=145, PETRI_TRANSITIONS=293} [2022-11-25 17:20:48,542 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 89 predicate places. [2022-11-25 17:20:48,542 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 293 transitions, 2370 flow [2022-11-25 17:20:48,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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 17:20:48,543 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:20:48,543 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 17:20:48,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 17:20:48,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-25 17:20:48,749 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-25 17:20:48,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:20:48,750 INFO L85 PathProgramCache]: Analyzing trace with hash -2037959495, now seen corresponding path program 1 times [2022-11-25 17:20:48,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:20:48,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466998694] [2022-11-25 17:20:48,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:20:48,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:20:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:20:49,139 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 17:20:49,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:20:49,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466998694] [2022-11-25 17:20:49,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466998694] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:20:49,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:20:49,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:20:49,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699164183] [2022-11-25 17:20:49,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:20:49,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:20:49,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:20:49,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:20:49,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:20:49,368 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 203 [2022-11-25 17:20:49,369 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 293 transitions, 2370 flow. Second operand has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 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 17:20:49,370 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:20:49,370 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 203 [2022-11-25 17:20:49,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:20:50,938 INFO L130 PetriNetUnfolder]: 3421/7644 cut-off events. [2022-11-25 17:20:50,938 INFO L131 PetriNetUnfolder]: For 32217/32398 co-relation queries the response was YES. [2022-11-25 17:20:50,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34560 conditions, 7644 events. 3421/7644 cut-off events. For 32217/32398 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 57175 event pairs, 770 based on Foata normal form. 74/7686 useless extension candidates. Maximal degree in co-relation 34475. Up to 5537 conditions per place. [2022-11-25 17:20:51,003 INFO L137 encePairwiseOnDemand]: 192/203 looper letters, 271 selfloop transitions, 84 changer transitions 0/406 dead transitions. [2022-11-25 17:20:51,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 406 transitions, 4302 flow [2022-11-25 17:20:51,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:20:51,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:20:51,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 715 transitions. [2022-11-25 17:20:51,008 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5870279146141215 [2022-11-25 17:20:51,008 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 715 transitions. [2022-11-25 17:20:51,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 715 transitions. [2022-11-25 17:20:51,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:20:51,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 715 transitions. [2022-11-25 17:20:51,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 119.16666666666667) internal successors, (715), 6 states have internal predecessors, (715), 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 17:20:51,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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 17:20:51,016 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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 17:20:51,016 INFO L175 Difference]: Start difference. First operand has 145 places, 293 transitions, 2370 flow. Second operand 6 states and 715 transitions. [2022-11-25 17:20:51,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 406 transitions, 4302 flow [2022-11-25 17:20:51,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 406 transitions, 4232 flow, removed 17 selfloop flow, removed 2 redundant places. [2022-11-25 17:20:51,098 INFO L231 Difference]: Finished difference. Result has 153 places, 332 transitions, 3238 flow [2022-11-25 17:20:51,099 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=2348, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3238, PETRI_PLACES=153, PETRI_TRANSITIONS=332} [2022-11-25 17:20:51,100 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 97 predicate places. [2022-11-25 17:20:51,100 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 332 transitions, 3238 flow [2022-11-25 17:20:51,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 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 17:20:51,101 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:20:51,101 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, 1, 1, 1, 1] [2022-11-25 17:20:51,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 17:20:51,101 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-25 17:20:51,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:20:51,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1581867246, now seen corresponding path program 1 times [2022-11-25 17:20:51,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:20:51,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779585430] [2022-11-25 17:20:51,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:20:51,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:20:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:20:51,166 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 17:20:51,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:20:51,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779585430] [2022-11-25 17:20:51,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779585430] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:20:51,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764804866] [2022-11-25 17:20:51,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:20:51,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:20:51,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:20:51,168 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:20:51,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 17:20:51,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:20:51,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:20:51,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:20:51,349 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 17:20:51,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:20:51,382 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 17:20:51,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764804866] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:20:51,383 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:20:51,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-25 17:20:51,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531268897] [2022-11-25 17:20:51,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:20:51,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:20:51,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:20:51,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:20:51,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:20:51,406 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 203 [2022-11-25 17:20:51,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 332 transitions, 3238 flow. Second operand has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 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 17:20:51,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:20:51,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 203 [2022-11-25 17:20:51,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:20:53,426 INFO L130 PetriNetUnfolder]: 3942/9642 cut-off events. [2022-11-25 17:20:53,426 INFO L131 PetriNetUnfolder]: For 47208/47938 co-relation queries the response was YES. [2022-11-25 17:20:53,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44699 conditions, 9642 events. 3942/9642 cut-off events. For 47208/47938 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 73387 event pairs, 398 based on Foata normal form. 133/9680 useless extension candidates. Maximal degree in co-relation 44611. Up to 2702 conditions per place. [2022-11-25 17:20:53,507 INFO L137 encePairwiseOnDemand]: 199/203 looper letters, 195 selfloop transitions, 23 changer transitions 0/455 dead transitions. [2022-11-25 17:20:53,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 455 transitions, 4903 flow [2022-11-25 17:20:53,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:20:53,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:20:53,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 787 transitions. [2022-11-25 17:20:53,509 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6461412151067324 [2022-11-25 17:20:53,510 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 787 transitions. [2022-11-25 17:20:53,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 787 transitions. [2022-11-25 17:20:53,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:20:53,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 787 transitions. [2022-11-25 17:20:53,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 131.16666666666666) internal successors, (787), 6 states have internal predecessors, (787), 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 17:20:53,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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 17:20:53,515 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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 17:20:53,515 INFO L175 Difference]: Start difference. First operand has 153 places, 332 transitions, 3238 flow. Second operand 6 states and 787 transitions. [2022-11-25 17:20:53,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 455 transitions, 4903 flow [2022-11-25 17:20:53,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 455 transitions, 4763 flow, removed 70 selfloop flow, removed 0 redundant places. [2022-11-25 17:20:53,690 INFO L231 Difference]: Finished difference. Result has 162 places, 341 transitions, 3272 flow [2022-11-25 17:20:53,690 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=3098, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3272, PETRI_PLACES=162, PETRI_TRANSITIONS=341} [2022-11-25 17:20:53,691 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 106 predicate places. [2022-11-25 17:20:53,691 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 341 transitions, 3272 flow [2022-11-25 17:20:53,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 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 17:20:53,692 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:20:53,692 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 17:20:53,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 17:20:53,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:20:53,897 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-25 17:20:53,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:20:53,898 INFO L85 PathProgramCache]: Analyzing trace with hash 469554138, now seen corresponding path program 1 times [2022-11-25 17:20:53,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:20:53,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304537946] [2022-11-25 17:20:53,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:20:53,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:20:53,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:20:54,694 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 17:20:54,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:20:54,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304537946] [2022-11-25 17:20:54,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304537946] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:20:54,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288322796] [2022-11-25 17:20:54,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:20:54,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:20:54,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:20:54,696 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:20:54,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 17:20:54,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:20:54,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-25 17:20:54,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:20:55,280 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 17:20:55,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:20:55,333 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 17:20:55,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:20:55,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:20:55,414 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 17:20:55,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:20:55,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:20:55,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:20:55,481 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 17:20:55,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:20:55,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:20:55,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:20:55,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:20:55,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:20:55,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:20:55,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:20:55,573 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 17:20:55,620 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 17:20:55,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:20:56,807 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 17:20:56,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288322796] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:20:56,808 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:20:56,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2022-11-25 17:20:56,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592660218] [2022-11-25 17:20:56,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:20:56,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-25 17:20:56,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:20:56,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-25 17:20:56,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2022-11-25 17:21:04,764 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 203 [2022-11-25 17:21:04,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 341 transitions, 3272 flow. Second operand has 31 states, 31 states have (on average 93.54838709677419) internal successors, (2900), 31 states have internal predecessors, (2900), 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 17:21:04,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:04,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 203 [2022-11-25 17:21:04,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:10,237 INFO L130 PetriNetUnfolder]: 6142/13444 cut-off events. [2022-11-25 17:21:10,237 INFO L131 PetriNetUnfolder]: For 71075/71500 co-relation queries the response was YES. [2022-11-25 17:21:10,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68759 conditions, 13444 events. 6142/13444 cut-off events. For 71075/71500 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 100569 event pairs, 675 based on Foata normal form. 63/13462 useless extension candidates. Maximal degree in co-relation 68667. Up to 4627 conditions per place. [2022-11-25 17:21:10,368 INFO L137 encePairwiseOnDemand]: 185/203 looper letters, 736 selfloop transitions, 133 changer transitions 4/924 dead transitions. [2022-11-25 17:21:10,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 924 transitions, 10577 flow [2022-11-25 17:21:10,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-25 17:21:10,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-25 17:21:10,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1801 transitions. [2022-11-25 17:21:10,374 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5218777166038829 [2022-11-25 17:21:10,374 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1801 transitions. [2022-11-25 17:21:10,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1801 transitions. [2022-11-25 17:21:10,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:10,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1801 transitions. [2022-11-25 17:21:10,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 105.94117647058823) internal successors, (1801), 17 states have internal predecessors, (1801), 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 17:21:10,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 203.0) internal successors, (3654), 18 states have internal predecessors, (3654), 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 17:21:10,388 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 203.0) internal successors, (3654), 18 states have internal predecessors, (3654), 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 17:21:10,388 INFO L175 Difference]: Start difference. First operand has 162 places, 341 transitions, 3272 flow. Second operand 17 states and 1801 transitions. [2022-11-25 17:21:10,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 924 transitions, 10577 flow [2022-11-25 17:21:10,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 924 transitions, 10559 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:21:10,612 INFO L231 Difference]: Finished difference. Result has 189 places, 441 transitions, 5151 flow [2022-11-25 17:21:10,613 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=3262, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5151, PETRI_PLACES=189, PETRI_TRANSITIONS=441} [2022-11-25 17:21:10,614 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 133 predicate places. [2022-11-25 17:21:10,614 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 441 transitions, 5151 flow [2022-11-25 17:21:10,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 93.54838709677419) internal successors, (2900), 31 states have internal predecessors, (2900), 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 17:21:10,616 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:10,616 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 17:21:10,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 17:21:10,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-25 17:21:10,822 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-25 17:21:10,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:10,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1306204400, now seen corresponding path program 1 times [2022-11-25 17:21:10,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:10,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456909179] [2022-11-25 17:21:10,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:10,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:11,694 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 17:21:11,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:11,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456909179] [2022-11-25 17:21:11,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456909179] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:21:11,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613941306] [2022-11-25 17:21:11,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:11,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:21:11,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:21:11,697 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:21:11,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 17:21:11,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:11,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-25 17:21:11,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:21:12,270 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 17:21:12,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:12,326 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 17:21:12,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:12,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:12,384 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 17:21:12,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:12,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:12,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:12,450 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 17:21:12,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:12,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:12,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:12,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:12,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:12,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:12,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:12,533 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 17:21:12,579 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 17:21:12,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:21:13,822 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 17:21:13,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613941306] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:21:13,823 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:21:13,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2022-11-25 17:21:13,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115482655] [2022-11-25 17:21:13,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:21:13,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-25 17:21:13,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:13,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-25 17:21:13,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2022-11-25 17:21:20,653 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 203 [2022-11-25 17:21:20,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 441 transitions, 5151 flow. Second operand has 31 states, 31 states have (on average 84.2258064516129) internal successors, (2611), 31 states have internal predecessors, (2611), 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 17:21:20,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:20,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 203 [2022-11-25 17:21:20,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:30,543 INFO L130 PetriNetUnfolder]: 9904/20673 cut-off events. [2022-11-25 17:21:30,543 INFO L131 PetriNetUnfolder]: For 127144/127442 co-relation queries the response was YES. [2022-11-25 17:21:30,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111399 conditions, 20673 events. 9904/20673 cut-off events. For 127144/127442 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 160781 event pairs, 1672 based on Foata normal form. 146/20799 useless extension candidates. Maximal degree in co-relation 111293. Up to 9654 conditions per place. [2022-11-25 17:21:30,824 INFO L137 encePairwiseOnDemand]: 174/203 looper letters, 1000 selfloop transitions, 171 changer transitions 14/1200 dead transitions. [2022-11-25 17:21:30,824 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 1200 transitions, 14520 flow [2022-11-25 17:21:30,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-25 17:21:30,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-25 17:21:30,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1741 transitions. [2022-11-25 17:21:30,829 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.504491451753115 [2022-11-25 17:21:30,830 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1741 transitions. [2022-11-25 17:21:30,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1741 transitions. [2022-11-25 17:21:30,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:30,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1741 transitions. [2022-11-25 17:21:30,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 102.41176470588235) internal successors, (1741), 17 states have internal predecessors, (1741), 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 17:21:30,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 203.0) internal successors, (3654), 18 states have internal predecessors, (3654), 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 17:21:30,841 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 203.0) internal successors, (3654), 18 states have internal predecessors, (3654), 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 17:21:30,841 INFO L175 Difference]: Start difference. First operand has 189 places, 441 transitions, 5151 flow. Second operand 17 states and 1741 transitions. [2022-11-25 17:21:30,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 1200 transitions, 14520 flow [2022-11-25 17:21:31,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 1200 transitions, 14465 flow, removed 27 selfloop flow, removed 1 redundant places. [2022-11-25 17:21:31,434 INFO L231 Difference]: Finished difference. Result has 214 places, 578 transitions, 7629 flow [2022-11-25 17:21:31,434 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=5124, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=7629, PETRI_PLACES=214, PETRI_TRANSITIONS=578} [2022-11-25 17:21:31,435 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 158 predicate places. [2022-11-25 17:21:31,435 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 578 transitions, 7629 flow [2022-11-25 17:21:31,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 84.2258064516129) internal successors, (2611), 31 states have internal predecessors, (2611), 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 17:21:31,436 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:31,436 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 17:21:31,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 17:21:31,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-25 17:21:31,642 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-25 17:21:31,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:31,643 INFO L85 PathProgramCache]: Analyzing trace with hash -958498402, now seen corresponding path program 2 times [2022-11-25 17:21:31,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:31,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417115549] [2022-11-25 17:21:31,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:31,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:33,090 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 17:21:33,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:33,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417115549] [2022-11-25 17:21:33,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417115549] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:21:33,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310857130] [2022-11-25 17:21:33,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:21:33,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:21:33,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:21:33,095 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:21:33,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 17:21:33,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:21:33,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:21:33,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-25 17:21:33,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:21:33,590 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 17:21:33,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:33,649 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 17:21:33,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:33,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:33,712 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 17:21:33,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:33,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:33,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:33,777 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 17:21:33,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:33,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:33,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:33,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:33,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:33,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:33,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:33,947 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 17:21:33,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:33,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:33,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:33,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:33,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:33,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:33,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:33,981 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 17:21:34,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:34,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:34,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:34,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:34,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:34,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:34,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:34,021 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 17:21:34,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:34,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:34,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:34,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:34,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:34,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:34,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:34,057 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 17:21:34,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:34,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:34,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:34,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:34,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:34,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:34,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:21:34,129 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 17:21:34,183 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 17:21:34,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:21:52,532 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 17:21:52,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310857130] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:21:52,532 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:21:52,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 31 [2022-11-25 17:21:52,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415702612] [2022-11-25 17:21:52,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:21:52,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-25 17:21:52,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:52,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-25 17:21:52,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=803, Unknown=4, NotChecked=0, Total=992 [2022-11-25 17:21:54,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:21:55,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:21:58,201 WARN L539 Checker$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 17:22:00,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:22:03,081 WARN L539 Checker$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 17:22:06,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:22:08,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:22:10,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:22:14,011 WARN L539 Checker$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 17:22:16,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:22:20,932 WARN L539 Checker$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 17:22:23,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:22:25,258 WARN L539 Checker$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 17:22:27,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:22:30,404 WARN L539 Checker$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 17:22:32,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:22:36,461 WARN L539 Checker$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 17:22:40,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:22:42,706 WARN L539 Checker$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 17:22:42,742 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 203 [2022-11-25 17:22:42,743 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 578 transitions, 7629 flow. Second operand has 32 states, 32 states have (on average 57.21875) internal successors, (1831), 32 states have internal predecessors, (1831), 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 17:22:42,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:22:42,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 203 [2022-11-25 17:22:42,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:22:59,038 INFO L130 PetriNetUnfolder]: 12533/25179 cut-off events. [2022-11-25 17:22:59,038 INFO L131 PetriNetUnfolder]: For 196815/196815 co-relation queries the response was YES. [2022-11-25 17:22:59,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146251 conditions, 25179 events. 12533/25179 cut-off events. For 196815/196815 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 195935 event pairs, 2155 based on Foata normal form. 20/24939 useless extension candidates. Maximal degree in co-relation 146134. Up to 11313 conditions per place. [2022-11-25 17:22:59,486 INFO L137 encePairwiseOnDemand]: 185/203 looper letters, 1056 selfloop transitions, 243 changer transitions 2/1301 dead transitions. [2022-11-25 17:22:59,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 1301 transitions, 17862 flow [2022-11-25 17:22:59,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 17:22:59,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-25 17:22:59,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1192 transitions. [2022-11-25 17:22:59,492 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3669950738916256 [2022-11-25 17:22:59,492 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1192 transitions. [2022-11-25 17:22:59,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1192 transitions. [2022-11-25 17:22:59,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:22:59,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1192 transitions. [2022-11-25 17:22:59,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 74.5) internal successors, (1192), 16 states have internal predecessors, (1192), 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 17:22:59,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 203.0) internal successors, (3451), 17 states have internal predecessors, (3451), 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 17:22:59,507 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 203.0) internal successors, (3451), 17 states have internal predecessors, (3451), 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 17:22:59,507 INFO L175 Difference]: Start difference. First operand has 214 places, 578 transitions, 7629 flow. Second operand 16 states and 1192 transitions. [2022-11-25 17:22:59,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 1301 transitions, 17862 flow [2022-11-25 17:23:00,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 1301 transitions, 17718 flow, removed 53 selfloop flow, removed 2 redundant places. [2022-11-25 17:23:00,904 INFO L231 Difference]: Finished difference. Result has 236 places, 691 transitions, 10485 flow [2022-11-25 17:23:00,904 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=7529, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=10485, PETRI_PLACES=236, PETRI_TRANSITIONS=691} [2022-11-25 17:23:00,905 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 180 predicate places. [2022-11-25 17:23:00,905 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 691 transitions, 10485 flow [2022-11-25 17:23:00,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 57.21875) internal successors, (1831), 32 states have internal predecessors, (1831), 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 17:23:00,906 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:23:00,906 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 17:23:00,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-25 17:23:01,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:23:01,112 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-25 17:23:01,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:23:01,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1577539594, now seen corresponding path program 2 times [2022-11-25 17:23:01,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:23:01,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796544273] [2022-11-25 17:23:01,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:23:01,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:23:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:23:01,954 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 17:23:01,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:23:01,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796544273] [2022-11-25 17:23:01,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796544273] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:23:01,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5877806] [2022-11-25 17:23:01,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:23:01,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:23:01,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:23:01,959 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:23:01,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-25 17:23:02,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:23:02,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:23:02,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-25 17:23:02,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:23:02,518 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 17:23:02,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:23:02,571 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 17:23:02,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:23:02,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:23:02,652 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 17:23:02,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:23:02,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:23:02,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:23:02,736 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 17:23:02,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:23:02,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:23:02,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:23:02,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:23:02,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:23:02,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:23:02,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:23:02,932 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 17:23:02,979 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 17:23:02,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:23:10,456 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 17:23:10,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5877806] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:23:10,456 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:23:10,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2022-11-25 17:23:10,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056445954] [2022-11-25 17:23:10,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:23:10,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-25 17:23:10,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:23:10,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-25 17:23:10,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=747, Unknown=1, NotChecked=0, Total=930 [2022-11-25 17:23:12,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:23:15,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:23:19,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:23:22,661 WARN L539 Checker$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 17:23:24,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:23:27,263 WARN L539 Checker$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 17:23:29,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:23:32,594 WARN L539 Checker$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 17:23:35,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:23:36,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:23:38,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:23:42,111 WARN L539 Checker$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 17:23:44,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:23:47,036 WARN L539 Checker$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 17:23:48,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:23:51,494 WARN L539 Checker$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 17:23:54,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:23:56,430 WARN L539 Checker$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 17:23:58,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:24:03,567 WARN L539 Checker$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 17:24:04,737 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 203 [2022-11-25 17:24:04,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 691 transitions, 10485 flow. Second operand has 31 states, 31 states have (on average 55.32258064516129) internal successors, (1715), 31 states have internal predecessors, (1715), 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 17:24:04,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:24:04,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 203 [2022-11-25 17:24:04,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:24:22,285 INFO L130 PetriNetUnfolder]: 16506/33147 cut-off events. [2022-11-25 17:24:22,285 INFO L131 PetriNetUnfolder]: For 295635/295635 co-relation queries the response was YES. [2022-11-25 17:24:22,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197333 conditions, 33147 events. 16506/33147 cut-off events. For 295635/295635 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 271603 event pairs, 3306 based on Foata normal form. 106/32860 useless extension candidates. Maximal degree in co-relation 197206. Up to 11696 conditions per place. [2022-11-25 17:24:22,883 INFO L137 encePairwiseOnDemand]: 174/203 looper letters, 1194 selfloop transitions, 286 changer transitions 16/1496 dead transitions. [2022-11-25 17:24:22,883 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 1496 transitions, 21367 flow [2022-11-25 17:24:22,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 17:24:22,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-25 17:24:22,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1267 transitions. [2022-11-25 17:24:22,886 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3900862068965517 [2022-11-25 17:24:22,887 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1267 transitions. [2022-11-25 17:24:22,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1267 transitions. [2022-11-25 17:24:22,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:24:22,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1267 transitions. [2022-11-25 17:24:22,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 79.1875) internal successors, (1267), 16 states have internal predecessors, (1267), 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 17:24:22,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 203.0) internal successors, (3451), 17 states have internal predecessors, (3451), 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 17:24:22,896 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 203.0) internal successors, (3451), 17 states have internal predecessors, (3451), 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 17:24:22,896 INFO L175 Difference]: Start difference. First operand has 236 places, 691 transitions, 10485 flow. Second operand 16 states and 1267 transitions. [2022-11-25 17:24:22,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 1496 transitions, 21367 flow [2022-11-25 17:24:25,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 1496 transitions, 21105 flow, removed 31 selfloop flow, removed 5 redundant places. [2022-11-25 17:24:25,517 INFO L231 Difference]: Finished difference. Result has 256 places, 841 transitions, 13777 flow [2022-11-25 17:24:25,518 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=10342, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=13777, PETRI_PLACES=256, PETRI_TRANSITIONS=841} [2022-11-25 17:24:25,518 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 200 predicate places. [2022-11-25 17:24:25,518 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 841 transitions, 13777 flow [2022-11-25 17:24:25,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 55.32258064516129) internal successors, (1715), 31 states have internal predecessors, (1715), 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 17:24:25,519 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:24:25,519 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 17:24:25,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-25 17:24:25,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-25 17:24:25,726 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-25 17:24:25,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:24:25,726 INFO L85 PathProgramCache]: Analyzing trace with hash -531392220, now seen corresponding path program 3 times [2022-11-25 17:24:25,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:24:25,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472442113] [2022-11-25 17:24:25,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:24:25,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:24:25,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:24:26,974 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 17:24:26,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:24:26,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472442113] [2022-11-25 17:24:26,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472442113] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:24:26,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097200744] [2022-11-25 17:24:26,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 17:24:26,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:24:26,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:24:26,979 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:24:27,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-25 17:24:27,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-25 17:24:27,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:24:27,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-25 17:24:27,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:24:27,573 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 17:24:27,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:27,686 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 17:24:27,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:27,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:27,788 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 17:24:27,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:27,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:27,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:27,900 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 17:24:28,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:28,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:28,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:28,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:28,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:28,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:28,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:28,110 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 17:24:28,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:28,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:28,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:28,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:28,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:28,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:28,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:28,158 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 17:24:28,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:28,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:28,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:28,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:28,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:28,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:28,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:28,207 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 17:24:28,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:28,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:28,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:28,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:28,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:28,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:28,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:28,255 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 17:24:28,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:28,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:28,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:28,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:28,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:28,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:28,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:24:28,372 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 17:24:28,430 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 17:24:28,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:24:52,909 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 17:24:52,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097200744] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:24:52,910 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:24:52,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 32 [2022-11-25 17:24:52,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451348219] [2022-11-25 17:24:52,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:24:52,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-25 17:24:52,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:24:52,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-25 17:24:52,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=870, Unknown=7, NotChecked=0, Total=1056 [2022-11-25 17:24:55,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:24:58,414 WARN L539 Checker$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 17:25:01,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:25:03,940 WARN L539 Checker$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 17:25:06,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:25:08,732 WARN L539 Checker$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 17:25:11,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:25:13,659 WARN L539 Checker$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 17:25:16,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:25:19,052 WARN L539 Checker$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 17:25:21,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:25:24,070 WARN L539 Checker$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 17:25:26,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:25:29,323 WARN L539 Checker$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 17:25:31,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:25:33,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:25:35,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:25:37,760 WARN L539 Checker$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 17:25:39,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:25:42,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:25:46,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:25:48,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:25:53,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:25:57,363 WARN L539 Checker$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 17:26:00,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:26:03,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:26:06,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:26:07,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:26:09,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:26:13,174 WARN L539 Checker$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 17:26:13,936 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 203 [2022-11-25 17:26:13,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 841 transitions, 13777 flow. Second operand has 33 states, 33 states have (on average 57.121212121212125) internal successors, (1885), 33 states have internal predecessors, (1885), 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 17:26:13,937 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:26:13,937 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 203 [2022-11-25 17:26:13,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:26:54,728 INFO L130 PetriNetUnfolder]: 27126/54413 cut-off events. [2022-11-25 17:26:54,728 INFO L131 PetriNetUnfolder]: For 574293/574293 co-relation queries the response was YES. [2022-11-25 17:26:55,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343103 conditions, 54413 events. 27126/54413 cut-off events. For 574293/574293 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 453589 event pairs, 4578 based on Foata normal form. 65/53875 useless extension candidates. Maximal degree in co-relation 342966. Up to 17753 conditions per place. [2022-11-25 17:26:55,729 INFO L137 encePairwiseOnDemand]: 185/203 looper letters, 2375 selfloop transitions, 673 changer transitions 2/3050 dead transitions. [2022-11-25 17:26:55,729 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 3050 transitions, 47808 flow [2022-11-25 17:26:55,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-25 17:26:55,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-25 17:26:55,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2299 transitions. [2022-11-25 17:26:55,737 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.377504105090312 [2022-11-25 17:26:55,737 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2299 transitions. [2022-11-25 17:26:55,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2299 transitions. [2022-11-25 17:26:55,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:26:55,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2299 transitions. [2022-11-25 17:26:55,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 76.63333333333334) internal successors, (2299), 30 states have internal predecessors, (2299), 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 17:26:55,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 203.0) internal successors, (6293), 31 states have internal predecessors, (6293), 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 17:26:55,755 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 203.0) internal successors, (6293), 31 states have internal predecessors, (6293), 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 17:26:55,755 INFO L175 Difference]: Start difference. First operand has 256 places, 841 transitions, 13777 flow. Second operand 30 states and 2299 transitions. [2022-11-25 17:26:55,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 3050 transitions, 47808 flow [2022-11-25 17:27:02,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 3050 transitions, 47433 flow, removed 179 selfloop flow, removed 3 redundant places. [2022-11-25 17:27:02,674 INFO L231 Difference]: Finished difference. Result has 303 places, 1312 transitions, 26133 flow [2022-11-25 17:27:02,675 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=13602, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=841, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=235, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=26133, PETRI_PLACES=303, PETRI_TRANSITIONS=1312} [2022-11-25 17:27:02,675 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 247 predicate places. [2022-11-25 17:27:02,675 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 1312 transitions, 26133 flow [2022-11-25 17:27:02,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 57.121212121212125) internal successors, (1885), 33 states have internal predecessors, (1885), 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 17:27:02,675 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:27:02,676 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 17:27:02,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-11-25 17:27:02,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-25 17:27:02,876 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-25 17:27:02,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:27:02,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1712392368, now seen corresponding path program 3 times [2022-11-25 17:27:02,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:27:02,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542334309] [2022-11-25 17:27:02,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:27:02,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:27:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:27:03,615 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 17:27:03,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:27:03,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542334309] [2022-11-25 17:27:03,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542334309] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:27:03,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381777057] [2022-11-25 17:27:03,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 17:27:03,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:27:03,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:27:03,618 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:27:03,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d517ae9-d6a5-4120-8416-045d742a6e9a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-25 17:27:03,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-25 17:27:03,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:27:03,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-25 17:27:03,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:27:04,235 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 17:27:04,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:04,306 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 17:27:04,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:04,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:04,374 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 17:27:04,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:04,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:04,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:04,460 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 17:27:04,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:04,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:04,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:04,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:04,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:04,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:04,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:04,656 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 17:27:04,709 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 17:27:04,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:27:15,797 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 17:27:15,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381777057] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:27:15,797 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:27:15,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2022-11-25 17:27:15,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910031469] [2022-11-25 17:27:15,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:27:15,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-25 17:27:15,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:27:15,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-25 17:27:15,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=814, Unknown=2, NotChecked=0, Total=992 [2022-11-25 17:27:17,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:27:20,115 WARN L539 Checker$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 17:27:22,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:27:24,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:27:26,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:27:29,978 WARN L539 Checker$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 17:27:31,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:27:34,263 WARN L539 Checker$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 17:27:36,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:27:39,120 WARN L539 Checker$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 17:27:41,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:27:43,782 WARN L539 Checker$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 17:27:45,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:27:47,728 WARN L539 Checker$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 17:27:49,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:27:51,977 WARN L539 Checker$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 17:27:55,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:27:58,127 WARN L539 Checker$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 17:28:00,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:28:03,708 WARN L539 Checker$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 17:28:05,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:28:08,415 WARN L539 Checker$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 17:28:08,486 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 203 [2022-11-25 17:28:08,487 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 1312 transitions, 26133 flow. Second operand has 32 states, 32 states have (on average 55.21875) internal successors, (1767), 32 states have internal predecessors, (1767), 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 17:28:08,487 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:28:08,487 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 203 [2022-11-25 17:28:08,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand