./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro --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 bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 18:49:55,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:49:55,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:49:55,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:49:55,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:49:55,610 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:49:55,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:49:55,618 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:49:55,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:49:55,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:49:55,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:49:55,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:49:55,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:49:55,633 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:49:55,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:49:55,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:49:55,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:49:55,644 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:49:55,646 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:49:55,648 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:49:55,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:49:55,656 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:49:55,657 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:49:55,659 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:49:55,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:49:55,673 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:49:55,673 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:49:55,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:49:55,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:49:55,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:49:55,679 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:49:55,680 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:49:55,681 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:49:55,682 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:49:55,684 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:49:55,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:49:55,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:49:55,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:49:55,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:49:55,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:49:55,691 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:49:55,692 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-18 18:49:55,737 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:49:55,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:49:55,742 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:49:55,742 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:49:55,743 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:49:55,743 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:49:55,744 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:49:55,744 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:49:55,745 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:49:55,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:49:55,746 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:49:55,747 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:49:55,747 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:49:55,747 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:49:55,748 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:49:55,748 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:49:55,748 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:49:55,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:49:55,749 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-18 18:49:55,749 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:49:55,749 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:49:55,749 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:49:55,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:49:55,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:49:55,750 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:49:55,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:49:55,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:49:55,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:49:55,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:49:55,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:49:55,752 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:49:55,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:49:55,753 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:49:55,753 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:49:55,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:49:55,753 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f [2022-11-18 18:49:56,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:49:56,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:49:56,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:49:56,149 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:49:56,150 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:49:56,151 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i [2022-11-18 18:49:56,218 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/data/355f36a1d/c014df2641bb4cb2a831e363e5295055/FLAG8f28d1c13 [2022-11-18 18:49:56,954 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:49:56,954 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i [2022-11-18 18:49:56,970 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/data/355f36a1d/c014df2641bb4cb2a831e363e5295055/FLAG8f28d1c13 [2022-11-18 18:49:57,203 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/data/355f36a1d/c014df2641bb4cb2a831e363e5295055 [2022-11-18 18:49:57,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:49:57,207 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:49:57,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:49:57,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:49:57,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:49:57,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:49:57" (1/1) ... [2022-11-18 18:49:57,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20652819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:57, skipping insertion in model container [2022-11-18 18:49:57,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:49:57" (1/1) ... [2022-11-18 18:49:57,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:49:57,307 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:49:57,938 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i[41323,41336] [2022-11-18 18:49:57,995 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:49:58,025 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:49:58,084 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i[41323,41336] [2022-11-18 18:49:58,124 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:49:58,190 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:49:58,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:58 WrapperNode [2022-11-18 18:49:58,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:49:58,192 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:49:58,192 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:49:58,193 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:49:58,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:58" (1/1) ... [2022-11-18 18:49:58,222 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:58" (1/1) ... [2022-11-18 18:49:58,269 INFO L138 Inliner]: procedures = 271, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 336 [2022-11-18 18:49:58,273 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:49:58,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:49:58,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:49:58,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:49:58,296 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:58" (1/1) ... [2022-11-18 18:49:58,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:58" (1/1) ... [2022-11-18 18:49:58,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:58" (1/1) ... [2022-11-18 18:49:58,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:58" (1/1) ... [2022-11-18 18:49:58,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:58" (1/1) ... [2022-11-18 18:49:58,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:58" (1/1) ... [2022-11-18 18:49:58,354 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:58" (1/1) ... [2022-11-18 18:49:58,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:58" (1/1) ... [2022-11-18 18:49:58,362 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:49:58,363 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:49:58,363 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:49:58,363 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:49:58,364 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:58" (1/1) ... [2022-11-18 18:49:58,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:49:58,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:49:58,400 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:49:58,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:49:58,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:49:58,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:49:58,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:49:58,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:49:58,482 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 18:49:58,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:49:58,482 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-18 18:49:58,482 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-18 18:49:58,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:49:58,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:49:58,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:49:58,485 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 18:49:58,750 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:49:58,762 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:49:59,474 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:49:59,492 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:49:59,496 INFO L300 CfgBuilder]: Removed 35 assume(true) statements. [2022-11-18 18:49:59,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:49:59 BoogieIcfgContainer [2022-11-18 18:49:59,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:49:59,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:49:59,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:49:59,509 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:49:59,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:49:57" (1/3) ... [2022-11-18 18:49:59,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b01bb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:49:59, skipping insertion in model container [2022-11-18 18:49:59,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:58" (2/3) ... [2022-11-18 18:49:59,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b01bb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:49:59, skipping insertion in model container [2022-11-18 18:49:59,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:49:59" (3/3) ... [2022-11-18 18:49:59,518 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_71-funloop_racing.i [2022-11-18 18:49:59,530 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:49:59,540 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:49:59,541 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-18 18:49:59,541 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:49:59,637 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-18 18:49:59,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 315 places, 357 transitions, 722 flow [2022-11-18 18:49:59,887 INFO L130 PetriNetUnfolder]: 73/565 cut-off events. [2022-11-18 18:49:59,887 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 18:49:59,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 571 conditions, 565 events. 73/565 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3026 event pairs, 0 based on Foata normal form. 0/462 useless extension candidates. Maximal degree in co-relation 317. Up to 8 conditions per place. [2022-11-18 18:49:59,906 INFO L82 GeneralOperation]: Start removeDead. Operand has 315 places, 357 transitions, 722 flow [2022-11-18 18:49:59,918 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 315 places, 357 transitions, 722 flow [2022-11-18 18:49:59,929 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:49:59,937 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;@1b7d08b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:49:59,937 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-18 18:49:59,954 INFO L130 PetriNetUnfolder]: 13/119 cut-off events. [2022-11-18 18:49:59,954 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:49:59,955 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:49:59,955 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:59,956 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-18 18:49:59,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:59,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1042136678, now seen corresponding path program 1 times [2022-11-18 18:49:59,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:59,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790910471] [2022-11-18 18:49:59,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:59,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:00,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:00,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:00,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:00,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790910471] [2022-11-18 18:50:00,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790910471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:00,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:00,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:50:00,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101984357] [2022-11-18 18:50:00,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:00,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 18:50:00,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:00,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 18:50:00,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:50:00,314 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 357 [2022-11-18 18:50:00,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 357 transitions, 722 flow. Second operand has 2 states, 2 states have (on average 316.0) internal successors, (632), 2 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:00,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:00,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 357 [2022-11-18 18:50:00,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:00,505 INFO L130 PetriNetUnfolder]: 10/497 cut-off events. [2022-11-18 18:50:00,506 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 18:50:00,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 506 conditions, 497 events. 10/497 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2357 event pairs, 0 based on Foata normal form. 63/515 useless extension candidates. Maximal degree in co-relation 279. Up to 4 conditions per place. [2022-11-18 18:50:00,515 INFO L137 encePairwiseOnDemand]: 319/357 looper letters, 2 selfloop transitions, 0 changer transitions 0/316 dead transitions. [2022-11-18 18:50:00,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 316 transitions, 644 flow [2022-11-18 18:50:00,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 18:50:00,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 18:50:00,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 668 transitions. [2022-11-18 18:50:00,541 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9355742296918768 [2022-11-18 18:50:00,542 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 668 transitions. [2022-11-18 18:50:00,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 668 transitions. [2022-11-18 18:50:00,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:00,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 668 transitions. [2022-11-18 18:50:00,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 334.0) internal successors, (668), 2 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:00,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 357.0) internal successors, (1071), 3 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:00,579 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 357.0) internal successors, (1071), 3 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:00,581 INFO L175 Difference]: Start difference. First operand has 315 places, 357 transitions, 722 flow. Second operand 2 states and 668 transitions. [2022-11-18 18:50:00,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 316 transitions, 644 flow [2022-11-18 18:50:00,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 316 transitions, 644 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:50:00,600 INFO L231 Difference]: Finished difference. Result has 313 places, 316 transitions, 640 flow [2022-11-18 18:50:00,603 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=640, PETRI_PLACES=313, PETRI_TRANSITIONS=316} [2022-11-18 18:50:00,611 INFO L288 CegarLoopForPetriNet]: 315 programPoint places, -2 predicate places. [2022-11-18 18:50:00,612 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 316 transitions, 640 flow [2022-11-18 18:50:00,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 316.0) internal successors, (632), 2 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:00,613 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:00,614 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:00,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:50:00,615 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-18 18:50:00,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:00,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1655215296, now seen corresponding path program 1 times [2022-11-18 18:50:00,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:00,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812161855] [2022-11-18 18:50:00,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:00,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:00,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:00,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:00,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:00,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812161855] [2022-11-18 18:50:00,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812161855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:00,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:00,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:50:00,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462532240] [2022-11-18 18:50:00,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:00,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:50:00,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:00,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:50:00,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:50:00,823 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 357 [2022-11-18 18:50:00,825 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 316 transitions, 640 flow. Second operand has 3 states, 3 states have (on average 308.0) internal successors, (924), 3 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:00,825 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:00,825 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 357 [2022-11-18 18:50:00,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:00,966 INFO L130 PetriNetUnfolder]: 10/501 cut-off events. [2022-11-18 18:50:00,967 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 18:50:00,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 522 conditions, 501 events. 10/501 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2358 event pairs, 0 based on Foata normal form. 0/456 useless extension candidates. Maximal degree in co-relation 518. Up to 10 conditions per place. [2022-11-18 18:50:00,974 INFO L137 encePairwiseOnDemand]: 354/357 looper letters, 11 selfloop transitions, 2 changer transitions 0/320 dead transitions. [2022-11-18 18:50:00,974 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 320 transitions, 674 flow [2022-11-18 18:50:00,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:50:00,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:50:00,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 935 transitions. [2022-11-18 18:50:00,978 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.873015873015873 [2022-11-18 18:50:00,978 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 935 transitions. [2022-11-18 18:50:00,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 935 transitions. [2022-11-18 18:50:00,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:00,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 935 transitions. [2022-11-18 18:50:00,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:00,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:00,987 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:00,988 INFO L175 Difference]: Start difference. First operand has 313 places, 316 transitions, 640 flow. Second operand 3 states and 935 transitions. [2022-11-18 18:50:00,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 320 transitions, 674 flow [2022-11-18 18:50:00,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 320 transitions, 674 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:50:00,999 INFO L231 Difference]: Finished difference. Result has 316 places, 317 transitions, 652 flow [2022-11-18 18:50:01,000 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=652, PETRI_PLACES=316, PETRI_TRANSITIONS=317} [2022-11-18 18:50:01,001 INFO L288 CegarLoopForPetriNet]: 315 programPoint places, 1 predicate places. [2022-11-18 18:50:01,002 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 317 transitions, 652 flow [2022-11-18 18:50:01,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 308.0) internal successors, (924), 3 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:01,004 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:01,004 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:01,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:50:01,006 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-18 18:50:01,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:01,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1057318261, now seen corresponding path program 1 times [2022-11-18 18:50:01,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:01,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830634533] [2022-11-18 18:50:01,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:01,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:01,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:01,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:01,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830634533] [2022-11-18 18:50:01,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830634533] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:50:01,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774692583] [2022-11-18 18:50:01,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:01,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:01,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:01,174 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:01,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:50:01,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:01,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 18:50:01,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:01,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:50:01,359 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:50:01,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774692583] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:01,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:50:01,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-18 18:50:01,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748510801] [2022-11-18 18:50:01,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:01,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:50:01,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:01,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:50:01,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:50:01,364 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 357 [2022-11-18 18:50:01,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 317 transitions, 652 flow. Second operand has 3 states, 3 states have (on average 308.0) internal successors, (924), 3 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:01,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:01,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 357 [2022-11-18 18:50:01,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:01,460 INFO L130 PetriNetUnfolder]: 6/339 cut-off events. [2022-11-18 18:50:01,461 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 18:50:01,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 339 events. 6/339 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1155 event pairs, 0 based on Foata normal form. 0/311 useless extension candidates. Maximal degree in co-relation 359. Up to 7 conditions per place. [2022-11-18 18:50:01,467 INFO L137 encePairwiseOnDemand]: 354/357 looper letters, 9 selfloop transitions, 2 changer transitions 0/319 dead transitions. [2022-11-18 18:50:01,467 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 319 transitions, 678 flow [2022-11-18 18:50:01,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:50:01,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:50:01,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 933 transitions. [2022-11-18 18:50:01,471 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8711484593837535 [2022-11-18 18:50:01,471 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 933 transitions. [2022-11-18 18:50:01,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 933 transitions. [2022-11-18 18:50:01,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:01,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 933 transitions. [2022-11-18 18:50:01,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 311.0) internal successors, (933), 3 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:01,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:01,480 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:01,480 INFO L175 Difference]: Start difference. First operand has 316 places, 317 transitions, 652 flow. Second operand 3 states and 933 transitions. [2022-11-18 18:50:01,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 319 transitions, 678 flow [2022-11-18 18:50:01,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 319 transitions, 676 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:50:01,488 INFO L231 Difference]: Finished difference. Result has 318 places, 317 transitions, 658 flow [2022-11-18 18:50:01,489 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=658, PETRI_PLACES=318, PETRI_TRANSITIONS=317} [2022-11-18 18:50:01,490 INFO L288 CegarLoopForPetriNet]: 315 programPoint places, 3 predicate places. [2022-11-18 18:50:01,490 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 317 transitions, 658 flow [2022-11-18 18:50:01,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 308.0) internal successors, (924), 3 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:01,491 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:01,491 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:01,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:50:01,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:01,698 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-18 18:50:01,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:01,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1084894647, now seen corresponding path program 1 times [2022-11-18 18:50:01,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:01,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201616182] [2022-11-18 18:50:01,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:01,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:01,804 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:50:01,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:01,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201616182] [2022-11-18 18:50:01,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201616182] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:50:01,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763204083] [2022-11-18 18:50:01,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:01,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:01,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:01,807 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:01,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:50:01,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:01,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:50:01,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:02,005 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:50:02,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:50:02,056 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:50:02,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763204083] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:50:02,056 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:50:02,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 18:50:02,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355124444] [2022-11-18 18:50:02,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:50:02,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:50:02,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:02,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:50:02,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:50:02,063 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 357 [2022-11-18 18:50:02,067 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 317 transitions, 658 flow. Second operand has 10 states, 10 states have (on average 308.1) internal successors, (3081), 10 states have internal predecessors, (3081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:02,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:02,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 357 [2022-11-18 18:50:02,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:02,302 INFO L130 PetriNetUnfolder]: 6/346 cut-off events. [2022-11-18 18:50:02,303 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-18 18:50:02,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 387 conditions, 346 events. 6/346 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1143 event pairs, 0 based on Foata normal form. 2/321 useless extension candidates. Maximal degree in co-relation 380. Up to 7 conditions per place. [2022-11-18 18:50:02,309 INFO L137 encePairwiseOnDemand]: 351/357 looper letters, 12 selfloop transitions, 9 changer transitions 0/327 dead transitions. [2022-11-18 18:50:02,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 327 transitions, 722 flow [2022-11-18 18:50:02,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:50:02,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 18:50:02,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2777 transitions. [2022-11-18 18:50:02,319 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.864301276065982 [2022-11-18 18:50:02,319 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2777 transitions. [2022-11-18 18:50:02,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2777 transitions. [2022-11-18 18:50:02,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:02,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2777 transitions. [2022-11-18 18:50:02,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 308.55555555555554) internal successors, (2777), 9 states have internal predecessors, (2777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:02,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 357.0) internal successors, (3570), 10 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:02,343 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 357.0) internal successors, (3570), 10 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:02,344 INFO L175 Difference]: Start difference. First operand has 318 places, 317 transitions, 658 flow. Second operand 9 states and 2777 transitions. [2022-11-18 18:50:02,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 327 transitions, 722 flow [2022-11-18 18:50:02,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 327 transitions, 718 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:50:02,353 INFO L231 Difference]: Finished difference. Result has 327 places, 323 transitions, 704 flow [2022-11-18 18:50:02,354 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=704, PETRI_PLACES=327, PETRI_TRANSITIONS=323} [2022-11-18 18:50:02,355 INFO L288 CegarLoopForPetriNet]: 315 programPoint places, 12 predicate places. [2022-11-18 18:50:02,355 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 323 transitions, 704 flow [2022-11-18 18:50:02,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 308.1) internal successors, (3081), 10 states have internal predecessors, (3081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:02,358 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:02,359 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:02,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:50:02,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:02,570 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-18 18:50:02,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:02,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1986531625, now seen corresponding path program 2 times [2022-11-18 18:50:02,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:02,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635342055] [2022-11-18 18:50:02,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:02,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:02,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:02,849 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:50:02,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:02,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635342055] [2022-11-18 18:50:02,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635342055] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:50:02,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498187262] [2022-11-18 18:50:02,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:50:02,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:02,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:02,851 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:02,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:50:02,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:50:02,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:50:02,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:50:02,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:03,050 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:50:03,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:50:03,200 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:50:03,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498187262] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:50:03,201 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:50:03,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-18 18:50:03,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528675854] [2022-11-18 18:50:03,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:50:03,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 18:50:03,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:03,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 18:50:03,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-18 18:50:03,217 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 357 [2022-11-18 18:50:03,226 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 323 transitions, 704 flow. Second operand has 18 states, 18 states have (on average 308.27777777777777) internal successors, (5549), 18 states have internal predecessors, (5549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:03,226 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:03,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 357 [2022-11-18 18:50:03,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:03,591 INFO L130 PetriNetUnfolder]: 6/366 cut-off events. [2022-11-18 18:50:03,591 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-11-18 18:50:03,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 475 conditions, 366 events. 6/366 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1145 event pairs, 0 based on Foata normal form. 4/343 useless extension candidates. Maximal degree in co-relation 466. Up to 11 conditions per place. [2022-11-18 18:50:03,597 INFO L137 encePairwiseOnDemand]: 351/357 looper letters, 20 selfloop transitions, 21 changer transitions 0/347 dead transitions. [2022-11-18 18:50:03,597 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 347 transitions, 894 flow [2022-11-18 18:50:03,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 18:50:03,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 18:50:03,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6471 transitions. [2022-11-18 18:50:03,612 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8631452581032413 [2022-11-18 18:50:03,612 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6471 transitions. [2022-11-18 18:50:03,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6471 transitions. [2022-11-18 18:50:03,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:03,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6471 transitions. [2022-11-18 18:50:03,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 308.14285714285717) internal successors, (6471), 21 states have internal predecessors, (6471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:03,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 357.0) internal successors, (7854), 22 states have internal predecessors, (7854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:03,653 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 357.0) internal successors, (7854), 22 states have internal predecessors, (7854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:03,654 INFO L175 Difference]: Start difference. First operand has 327 places, 323 transitions, 704 flow. Second operand 21 states and 6471 transitions. [2022-11-18 18:50:03,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 347 transitions, 894 flow [2022-11-18 18:50:03,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 347 transitions, 880 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-18 18:50:03,665 INFO L231 Difference]: Finished difference. Result has 351 places, 336 transitions, 828 flow [2022-11-18 18:50:03,666 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=698, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=828, PETRI_PLACES=351, PETRI_TRANSITIONS=336} [2022-11-18 18:50:03,669 INFO L288 CegarLoopForPetriNet]: 315 programPoint places, 36 predicate places. [2022-11-18 18:50:03,669 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 336 transitions, 828 flow [2022-11-18 18:50:03,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 308.27777777777777) internal successors, (5549), 18 states have internal predecessors, (5549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:03,682 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:03,682 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:03,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:50:03,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:03,883 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-18 18:50:03,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:03,883 INFO L85 PathProgramCache]: Analyzing trace with hash 901727977, now seen corresponding path program 3 times [2022-11-18 18:50:03,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:03,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362840820] [2022-11-18 18:50:03,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:03,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:04,371 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:50:04,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:04,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362840820] [2022-11-18 18:50:04,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362840820] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:50:04,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983987355] [2022-11-18 18:50:04,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:50:04,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:04,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:04,374 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:04,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 18:50:04,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-18 18:50:04,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:50:04,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:50:04,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:04,711 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:50:04,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:50:04,986 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:50:04,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983987355] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:50:04,987 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:50:04,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-18 18:50:04,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507752856] [2022-11-18 18:50:04,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:50:04,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 18:50:04,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:04,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 18:50:04,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:50:05,005 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 357 [2022-11-18 18:50:05,014 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 336 transitions, 828 flow. Second operand has 23 states, 23 states have (on average 308.4347826086956) internal successors, (7094), 23 states have internal predecessors, (7094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:05,014 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:05,014 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 357 [2022-11-18 18:50:05,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:05,496 INFO L130 PetriNetUnfolder]: 6/381 cut-off events. [2022-11-18 18:50:05,496 INFO L131 PetriNetUnfolder]: For 113/113 co-relation queries the response was YES. [2022-11-18 18:50:05,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 576 conditions, 381 events. 6/381 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1150 event pairs, 0 based on Foata normal form. 3/357 useless extension candidates. Maximal degree in co-relation 562. Up to 17 conditions per place. [2022-11-18 18:50:05,503 INFO L137 encePairwiseOnDemand]: 351/357 looper letters, 26 selfloop transitions, 30 changer transitions 0/362 dead transitions. [2022-11-18 18:50:05,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 362 transitions, 1086 flow [2022-11-18 18:50:05,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 18:50:05,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 18:50:05,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 9239 transitions. [2022-11-18 18:50:05,524 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8626517273576098 [2022-11-18 18:50:05,524 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 9239 transitions. [2022-11-18 18:50:05,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 9239 transitions. [2022-11-18 18:50:05,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:05,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 9239 transitions. [2022-11-18 18:50:05,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 307.96666666666664) internal successors, (9239), 30 states have internal predecessors, (9239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:05,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 357.0) internal successors, (11067), 31 states have internal predecessors, (11067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:05,603 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 357.0) internal successors, (11067), 31 states have internal predecessors, (11067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:05,603 INFO L175 Difference]: Start difference. First operand has 351 places, 336 transitions, 828 flow. Second operand 30 states and 9239 transitions. [2022-11-18 18:50:05,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 362 transitions, 1086 flow [2022-11-18 18:50:05,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 362 transitions, 1056 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-11-18 18:50:05,618 INFO L231 Difference]: Finished difference. Result has 378 places, 346 transitions, 956 flow [2022-11-18 18:50:05,619 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=804, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=956, PETRI_PLACES=378, PETRI_TRANSITIONS=346} [2022-11-18 18:50:05,622 INFO L288 CegarLoopForPetriNet]: 315 programPoint places, 63 predicate places. [2022-11-18 18:50:05,623 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 346 transitions, 956 flow [2022-11-18 18:50:05,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 308.4347826086956) internal successors, (7094), 23 states have internal predecessors, (7094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:05,625 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:05,625 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:05,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:50:05,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:05,836 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-18 18:50:05,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:05,837 INFO L85 PathProgramCache]: Analyzing trace with hash 384686164, now seen corresponding path program 4 times [2022-11-18 18:50:05,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:05,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224546663] [2022-11-18 18:50:05,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:05,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:05,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:50:05,885 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:50:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:50:05,949 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:50:05,949 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:50:05,951 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-11-18 18:50:05,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2022-11-18 18:50:05,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2022-11-18 18:50:05,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2022-11-18 18:50:05,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2022-11-18 18:50:05,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2022-11-18 18:50:05,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2022-11-18 18:50:05,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2022-11-18 18:50:05,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2022-11-18 18:50:05,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2022-11-18 18:50:05,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2022-11-18 18:50:05,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2022-11-18 18:50:05,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2022-11-18 18:50:05,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2022-11-18 18:50:05,964 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2022-11-18 18:50:05,964 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2022-11-18 18:50:05,964 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2022-11-18 18:50:05,964 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2022-11-18 18:50:05,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2022-11-18 18:50:05,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2022-11-18 18:50:05,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2022-11-18 18:50:05,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2022-11-18 18:50:05,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:50:05,966 INFO L444 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2022-11-18 18:50:05,969 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 18:50:05,969 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 18:50:06,057 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 18:50:06,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 408 places, 463 transitions, 944 flow [2022-11-18 18:50:06,326 INFO L130 PetriNetUnfolder]: 118/910 cut-off events. [2022-11-18 18:50:06,326 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-18 18:50:06,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 924 conditions, 910 events. 118/910 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 5705 event pairs, 0 based on Foata normal form. 0/744 useless extension candidates. Maximal degree in co-relation 567. Up to 12 conditions per place. [2022-11-18 18:50:06,340 INFO L82 GeneralOperation]: Start removeDead. Operand has 408 places, 463 transitions, 944 flow [2022-11-18 18:50:06,353 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 408 places, 463 transitions, 944 flow [2022-11-18 18:50:06,354 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:50:06,355 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;@1b7d08b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:50:06,355 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-11-18 18:50:06,365 INFO L130 PetriNetUnfolder]: 13/117 cut-off events. [2022-11-18 18:50:06,365 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:50:06,365 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:06,365 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:06,365 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-18 18:50:06,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:06,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1964239927, now seen corresponding path program 1 times [2022-11-18 18:50:06,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:06,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844684002] [2022-11-18 18:50:06,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:06,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:06,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:06,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:06,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:06,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844684002] [2022-11-18 18:50:06,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844684002] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:06,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:06,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:50:06,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460945494] [2022-11-18 18:50:06,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:06,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 18:50:06,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:06,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 18:50:06,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:50:06,398 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 405 out of 463 [2022-11-18 18:50:06,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 463 transitions, 944 flow. Second operand has 2 states, 2 states have (on average 407.0) internal successors, (814), 2 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:06,400 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:06,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 405 of 463 [2022-11-18 18:50:06,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:06,658 INFO L130 PetriNetUnfolder]: 17/801 cut-off events. [2022-11-18 18:50:06,658 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-18 18:50:06,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 822 conditions, 801 events. 17/801 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4703 event pairs, 0 based on Foata normal form. 122/850 useless extension candidates. Maximal degree in co-relation 501. Up to 7 conditions per place. [2022-11-18 18:50:06,673 INFO L137 encePairwiseOnDemand]: 413/463 looper letters, 4 selfloop transitions, 0 changer transitions 0/409 dead transitions. [2022-11-18 18:50:06,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 409 transitions, 844 flow [2022-11-18 18:50:06,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 18:50:06,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 18:50:06,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 864 transitions. [2022-11-18 18:50:06,677 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9330453563714903 [2022-11-18 18:50:06,677 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 864 transitions. [2022-11-18 18:50:06,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 864 transitions. [2022-11-18 18:50:06,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:06,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 864 transitions. [2022-11-18 18:50:06,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 432.0) internal successors, (864), 2 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:06,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 463.0) internal successors, (1389), 3 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:06,686 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 463.0) internal successors, (1389), 3 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:06,686 INFO L175 Difference]: Start difference. First operand has 408 places, 463 transitions, 944 flow. Second operand 2 states and 864 transitions. [2022-11-18 18:50:06,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 409 transitions, 844 flow [2022-11-18 18:50:06,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 409 transitions, 844 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:50:06,696 INFO L231 Difference]: Finished difference. Result has 405 places, 409 transitions, 836 flow [2022-11-18 18:50:06,697 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=836, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=836, PETRI_PLACES=405, PETRI_TRANSITIONS=409} [2022-11-18 18:50:06,699 INFO L288 CegarLoopForPetriNet]: 408 programPoint places, -3 predicate places. [2022-11-18 18:50:06,699 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 409 transitions, 836 flow [2022-11-18 18:50:06,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 407.0) internal successors, (814), 2 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:06,700 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:06,700 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:06,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 18:50:06,701 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-18 18:50:06,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:06,701 INFO L85 PathProgramCache]: Analyzing trace with hash 277270799, now seen corresponding path program 1 times [2022-11-18 18:50:06,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:06,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301284945] [2022-11-18 18:50:06,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:06,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:06,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:06,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:06,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301284945] [2022-11-18 18:50:06,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301284945] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:06,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:06,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:50:06,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801157651] [2022-11-18 18:50:06,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:06,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:50:06,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:06,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:50:06,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:50:06,795 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 398 out of 463 [2022-11-18 18:50:06,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 409 transitions, 836 flow. Second operand has 3 states, 3 states have (on average 399.0) internal successors, (1197), 3 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:06,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:06,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 398 of 463 [2022-11-18 18:50:06,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:07,039 INFO L130 PetriNetUnfolder]: 17/805 cut-off events. [2022-11-18 18:50:07,040 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-18 18:50:07,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 838 conditions, 805 events. 17/805 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4718 event pairs, 0 based on Foata normal form. 0/732 useless extension candidates. Maximal degree in co-relation 833. Up to 14 conditions per place. [2022-11-18 18:50:07,059 INFO L137 encePairwiseOnDemand]: 460/463 looper letters, 13 selfloop transitions, 2 changer transitions 0/413 dead transitions. [2022-11-18 18:50:07,059 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 413 transitions, 874 flow [2022-11-18 18:50:07,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:50:07,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:50:07,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1210 transitions. [2022-11-18 18:50:07,063 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.871130309575234 [2022-11-18 18:50:07,063 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1210 transitions. [2022-11-18 18:50:07,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1210 transitions. [2022-11-18 18:50:07,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:07,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1210 transitions. [2022-11-18 18:50:07,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 403.3333333333333) internal successors, (1210), 3 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:07,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:07,071 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:07,071 INFO L175 Difference]: Start difference. First operand has 405 places, 409 transitions, 836 flow. Second operand 3 states and 1210 transitions. [2022-11-18 18:50:07,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 413 transitions, 874 flow [2022-11-18 18:50:07,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 413 transitions, 874 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:50:07,081 INFO L231 Difference]: Finished difference. Result has 408 places, 410 transitions, 848 flow [2022-11-18 18:50:07,082 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=836, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=848, PETRI_PLACES=408, PETRI_TRANSITIONS=410} [2022-11-18 18:50:07,082 INFO L288 CegarLoopForPetriNet]: 408 programPoint places, 0 predicate places. [2022-11-18 18:50:07,082 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 410 transitions, 848 flow [2022-11-18 18:50:07,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 399.0) internal successors, (1197), 3 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:07,083 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:07,083 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:07,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 18:50:07,084 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-18 18:50:07,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:07,085 INFO L85 PathProgramCache]: Analyzing trace with hash 298235307, now seen corresponding path program 1 times [2022-11-18 18:50:07,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:07,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368398293] [2022-11-18 18:50:07,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:07,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:07,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:07,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:07,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:07,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368398293] [2022-11-18 18:50:07,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368398293] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:50:07,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113421813] [2022-11-18 18:50:07,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:07,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:07,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:07,158 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:07,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 18:50:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:07,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 18:50:07,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:07,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:50:07,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:50:07,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113421813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:07,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:50:07,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-18 18:50:07,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235619609] [2022-11-18 18:50:07,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:07,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:50:07,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:07,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:50:07,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:50:07,305 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 398 out of 463 [2022-11-18 18:50:07,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 410 transitions, 848 flow. Second operand has 3 states, 3 states have (on average 399.0) internal successors, (1197), 3 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:07,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:07,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 398 of 463 [2022-11-18 18:50:07,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:07,522 INFO L130 PetriNetUnfolder]: 13/643 cut-off events. [2022-11-18 18:50:07,522 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-18 18:50:07,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 686 conditions, 643 events. 13/643 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3404 event pairs, 0 based on Foata normal form. 0/587 useless extension candidates. Maximal degree in co-relation 679. Up to 16 conditions per place. [2022-11-18 18:50:07,540 INFO L137 encePairwiseOnDemand]: 460/463 looper letters, 13 selfloop transitions, 2 changer transitions 0/414 dead transitions. [2022-11-18 18:50:07,541 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 414 transitions, 886 flow [2022-11-18 18:50:07,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:50:07,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:50:07,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1210 transitions. [2022-11-18 18:50:07,544 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.871130309575234 [2022-11-18 18:50:07,545 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1210 transitions. [2022-11-18 18:50:07,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1210 transitions. [2022-11-18 18:50:07,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:07,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1210 transitions. [2022-11-18 18:50:07,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 403.3333333333333) internal successors, (1210), 3 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:07,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:07,553 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:07,553 INFO L175 Difference]: Start difference. First operand has 408 places, 410 transitions, 848 flow. Second operand 3 states and 1210 transitions. [2022-11-18 18:50:07,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 414 transitions, 886 flow [2022-11-18 18:50:07,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 414 transitions, 884 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:50:07,562 INFO L231 Difference]: Finished difference. Result has 410 places, 411 transitions, 858 flow [2022-11-18 18:50:07,563 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=858, PETRI_PLACES=410, PETRI_TRANSITIONS=411} [2022-11-18 18:50:07,564 INFO L288 CegarLoopForPetriNet]: 408 programPoint places, 2 predicate places. [2022-11-18 18:50:07,564 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 411 transitions, 858 flow [2022-11-18 18:50:07,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 399.0) internal successors, (1197), 3 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:07,565 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:07,565 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:07,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 18:50:07,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 18:50:07,771 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-18 18:50:07,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:07,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1681716013, now seen corresponding path program 1 times [2022-11-18 18:50:07,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:07,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291610183] [2022-11-18 18:50:07,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:07,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:07,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:07,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:50:07,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:07,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291610183] [2022-11-18 18:50:07,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291610183] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:50:07,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851734952] [2022-11-18 18:50:07,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:07,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:07,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:07,888 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:07,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 18:50:08,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:08,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 18:50:08,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:08,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:50:08,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:50:08,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851734952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:08,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:50:08,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-18 18:50:08,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903316543] [2022-11-18 18:50:08,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:08,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:50:08,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:08,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:50:08,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:50:08,046 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 397 out of 463 [2022-11-18 18:50:08,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 411 transitions, 858 flow. Second operand has 3 states, 3 states have (on average 398.6666666666667) internal successors, (1196), 3 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:08,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:08,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 397 of 463 [2022-11-18 18:50:08,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:08,334 INFO L130 PetriNetUnfolder]: 15/811 cut-off events. [2022-11-18 18:50:08,334 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-18 18:50:08,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 868 conditions, 811 events. 15/811 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3921 event pairs, 0 based on Foata normal form. 0/743 useless extension candidates. Maximal degree in co-relation 860. Up to 21 conditions per place. [2022-11-18 18:50:08,356 INFO L137 encePairwiseOnDemand]: 460/463 looper letters, 14 selfloop transitions, 2 changer transitions 0/415 dead transitions. [2022-11-18 18:50:08,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 415 transitions, 898 flow [2022-11-18 18:50:08,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:50:08,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:50:08,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1208 transitions. [2022-11-18 18:50:08,360 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8696904247660188 [2022-11-18 18:50:08,360 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1208 transitions. [2022-11-18 18:50:08,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1208 transitions. [2022-11-18 18:50:08,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:08,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1208 transitions. [2022-11-18 18:50:08,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 402.6666666666667) internal successors, (1208), 3 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:08,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:08,367 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:08,368 INFO L175 Difference]: Start difference. First operand has 410 places, 411 transitions, 858 flow. Second operand 3 states and 1208 transitions. [2022-11-18 18:50:08,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 415 transitions, 898 flow [2022-11-18 18:50:08,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 415 transitions, 896 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:50:08,377 INFO L231 Difference]: Finished difference. Result has 412 places, 412 transitions, 868 flow [2022-11-18 18:50:08,378 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=868, PETRI_PLACES=412, PETRI_TRANSITIONS=412} [2022-11-18 18:50:08,378 INFO L288 CegarLoopForPetriNet]: 408 programPoint places, 4 predicate places. [2022-11-18 18:50:08,378 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 412 transitions, 868 flow [2022-11-18 18:50:08,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 398.6666666666667) internal successors, (1196), 3 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:08,379 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:08,380 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:08,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-18 18:50:08,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 18:50:08,586 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-18 18:50:08,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:08,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1775509177, now seen corresponding path program 1 times [2022-11-18 18:50:08,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:08,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894456425] [2022-11-18 18:50:08,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:08,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:08,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:08,657 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 18:50:08,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:08,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894456425] [2022-11-18 18:50:08,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894456425] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:50:08,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075623680] [2022-11-18 18:50:08,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:08,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:08,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:08,660 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:08,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 18:50:08,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:08,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:50:08,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:08,812 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 18:50:08,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:50:08,856 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 18:50:08,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075623680] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:50:08,856 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:50:08,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 18:50:08,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221630203] [2022-11-18 18:50:08,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:50:08,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:50:08,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:08,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:50:08,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:50:08,863 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 397 out of 463 [2022-11-18 18:50:08,866 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 412 transitions, 868 flow. Second operand has 10 states, 10 states have (on average 399.2) internal successors, (3992), 10 states have internal predecessors, (3992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:08,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:08,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 397 of 463 [2022-11-18 18:50:08,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:09,192 INFO L130 PetriNetUnfolder]: 15/818 cut-off events. [2022-11-18 18:50:09,192 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-18 18:50:09,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 883 conditions, 818 events. 15/818 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3913 event pairs, 0 based on Foata normal form. 2/754 useless extension candidates. Maximal degree in co-relation 874. Up to 11 conditions per place. [2022-11-18 18:50:09,213 INFO L137 encePairwiseOnDemand]: 457/463 looper letters, 14 selfloop transitions, 9 changer transitions 0/422 dead transitions. [2022-11-18 18:50:09,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 422 transitions, 936 flow [2022-11-18 18:50:09,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:50:09,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 18:50:09,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3598 transitions. [2022-11-18 18:50:09,220 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8634509239260859 [2022-11-18 18:50:09,221 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3598 transitions. [2022-11-18 18:50:09,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3598 transitions. [2022-11-18 18:50:09,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:09,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3598 transitions. [2022-11-18 18:50:09,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 399.77777777777777) internal successors, (3598), 9 states have internal predecessors, (3598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:09,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 463.0) internal successors, (4630), 10 states have internal predecessors, (4630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:09,237 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 463.0) internal successors, (4630), 10 states have internal predecessors, (4630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:09,237 INFO L175 Difference]: Start difference. First operand has 412 places, 412 transitions, 868 flow. Second operand 9 states and 3598 transitions. [2022-11-18 18:50:09,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 422 transitions, 936 flow [2022-11-18 18:50:09,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 422 transitions, 934 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:50:09,245 INFO L231 Difference]: Finished difference. Result has 422 places, 418 transitions, 916 flow [2022-11-18 18:50:09,246 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=916, PETRI_PLACES=422, PETRI_TRANSITIONS=418} [2022-11-18 18:50:09,247 INFO L288 CegarLoopForPetriNet]: 408 programPoint places, 14 predicate places. [2022-11-18 18:50:09,247 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 418 transitions, 916 flow [2022-11-18 18:50:09,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 399.2) internal successors, (3992), 10 states have internal predecessors, (3992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:09,248 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:09,249 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:09,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-18 18:50:09,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 18:50:09,454 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-18 18:50:09,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:09,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1249600199, now seen corresponding path program 2 times [2022-11-18 18:50:09,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:09,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785954348] [2022-11-18 18:50:09,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:09,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:09,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:09,604 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 18:50:09,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:09,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785954348] [2022-11-18 18:50:09,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785954348] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:50:09,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189725509] [2022-11-18 18:50:09,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:50:09,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:09,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:09,607 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:09,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 18:50:09,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:50:09,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:50:09,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:50:09,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:09,793 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 18:50:09,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:50:09,930 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 18:50:09,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189725509] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:50:09,930 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:50:09,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-18 18:50:09,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461206083] [2022-11-18 18:50:09,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:50:09,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 18:50:09,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:09,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 18:50:09,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-18 18:50:09,941 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 397 out of 463 [2022-11-18 18:50:09,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 418 transitions, 916 flow. Second operand has 18 states, 18 states have (on average 399.3333333333333) internal successors, (7188), 18 states have internal predecessors, (7188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:09,949 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:09,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 397 of 463 [2022-11-18 18:50:09,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:10,458 INFO L130 PetriNetUnfolder]: 15/838 cut-off events. [2022-11-18 18:50:10,459 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2022-11-18 18:50:10,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 971 conditions, 838 events. 15/838 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3921 event pairs, 0 based on Foata normal form. 4/776 useless extension candidates. Maximal degree in co-relation 960. Up to 11 conditions per place. [2022-11-18 18:50:10,482 INFO L137 encePairwiseOnDemand]: 457/463 looper letters, 22 selfloop transitions, 21 changer transitions 0/442 dead transitions. [2022-11-18 18:50:10,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 442 transitions, 1110 flow [2022-11-18 18:50:10,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 18:50:10,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 18:50:10,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 8384 transitions. [2022-11-18 18:50:10,497 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8622853028900546 [2022-11-18 18:50:10,497 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 8384 transitions. [2022-11-18 18:50:10,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 8384 transitions. [2022-11-18 18:50:10,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:10,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 8384 transitions. [2022-11-18 18:50:10,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 399.23809523809524) internal successors, (8384), 21 states have internal predecessors, (8384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:10,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 463.0) internal successors, (10186), 22 states have internal predecessors, (10186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:10,534 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 463.0) internal successors, (10186), 22 states have internal predecessors, (10186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:10,534 INFO L175 Difference]: Start difference. First operand has 422 places, 418 transitions, 916 flow. Second operand 21 states and 8384 transitions. [2022-11-18 18:50:10,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 442 transitions, 1110 flow [2022-11-18 18:50:10,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 442 transitions, 1096 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-18 18:50:10,544 INFO L231 Difference]: Finished difference. Result has 446 places, 431 transitions, 1040 flow [2022-11-18 18:50:10,545 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=910, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1040, PETRI_PLACES=446, PETRI_TRANSITIONS=431} [2022-11-18 18:50:10,546 INFO L288 CegarLoopForPetriNet]: 408 programPoint places, 38 predicate places. [2022-11-18 18:50:10,546 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 431 transitions, 1040 flow [2022-11-18 18:50:10,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 399.3333333333333) internal successors, (7188), 18 states have internal predecessors, (7188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:10,549 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:10,549 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:10,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 18:50:10,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 18:50:10,755 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-18 18:50:10,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:10,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1351170617, now seen corresponding path program 3 times [2022-11-18 18:50:10,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:10,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682760309] [2022-11-18 18:50:10,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:10,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:11,135 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 18:50:11,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:11,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682760309] [2022-11-18 18:50:11,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682760309] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:50:11,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450165033] [2022-11-18 18:50:11,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:50:11,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:11,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:11,138 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:11,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 18:50:11,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-18 18:50:11,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:50:11,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:50:11,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:11,458 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 18:50:11,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:50:11,694 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 18:50:11,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450165033] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:50:11,694 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:50:11,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-18 18:50:11,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852330604] [2022-11-18 18:50:11,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:50:11,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 18:50:11,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:11,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 18:50:11,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:50:11,704 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 397 out of 463 [2022-11-18 18:50:11,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 431 transitions, 1040 flow. Second operand has 23 states, 23 states have (on average 399.4782608695652) internal successors, (9188), 23 states have internal predecessors, (9188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:11,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:11,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 397 of 463 [2022-11-18 18:50:11,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:12,383 INFO L130 PetriNetUnfolder]: 15/853 cut-off events. [2022-11-18 18:50:12,383 INFO L131 PetriNetUnfolder]: For 126/126 co-relation queries the response was YES. [2022-11-18 18:50:12,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1072 conditions, 853 events. 15/853 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3922 event pairs, 0 based on Foata normal form. 3/790 useless extension candidates. Maximal degree in co-relation 1056. Up to 17 conditions per place. [2022-11-18 18:50:12,404 INFO L137 encePairwiseOnDemand]: 457/463 looper letters, 28 selfloop transitions, 30 changer transitions 0/457 dead transitions. [2022-11-18 18:50:12,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 457 transitions, 1302 flow [2022-11-18 18:50:12,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 18:50:12,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 18:50:12,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 11971 transitions. [2022-11-18 18:50:12,420 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8618430525557955 [2022-11-18 18:50:12,420 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 11971 transitions. [2022-11-18 18:50:12,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 11971 transitions. [2022-11-18 18:50:12,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:12,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 11971 transitions. [2022-11-18 18:50:12,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 399.03333333333336) internal successors, (11971), 30 states have internal predecessors, (11971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:12,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 463.0) internal successors, (14353), 31 states have internal predecessors, (14353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:12,473 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 463.0) internal successors, (14353), 31 states have internal predecessors, (14353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:12,473 INFO L175 Difference]: Start difference. First operand has 446 places, 431 transitions, 1040 flow. Second operand 30 states and 11971 transitions. [2022-11-18 18:50:12,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 457 transitions, 1302 flow [2022-11-18 18:50:12,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 457 transitions, 1272 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-11-18 18:50:12,483 INFO L231 Difference]: Finished difference. Result has 473 places, 441 transitions, 1168 flow [2022-11-18 18:50:12,484 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=1016, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1168, PETRI_PLACES=473, PETRI_TRANSITIONS=441} [2022-11-18 18:50:12,485 INFO L288 CegarLoopForPetriNet]: 408 programPoint places, 65 predicate places. [2022-11-18 18:50:12,485 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 441 transitions, 1168 flow [2022-11-18 18:50:12,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 399.4782608695652) internal successors, (9188), 23 states have internal predecessors, (9188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:12,488 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:12,489 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:12,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 18:50:12,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 18:50:12,695 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-18 18:50:12,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:12,696 INFO L85 PathProgramCache]: Analyzing trace with hash -414447645, now seen corresponding path program 4 times [2022-11-18 18:50:12,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:12,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832310131] [2022-11-18 18:50:12,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:12,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:50:12,733 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:50:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:50:12,783 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:50:12,787 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:50:12,787 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 27 remaining) [2022-11-18 18:50:12,787 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (25 of 27 remaining) [2022-11-18 18:50:12,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (24 of 27 remaining) [2022-11-18 18:50:12,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (23 of 27 remaining) [2022-11-18 18:50:12,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (22 of 27 remaining) [2022-11-18 18:50:12,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (21 of 27 remaining) [2022-11-18 18:50:12,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 27 remaining) [2022-11-18 18:50:12,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 27 remaining) [2022-11-18 18:50:12,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (18 of 27 remaining) [2022-11-18 18:50:12,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (17 of 27 remaining) [2022-11-18 18:50:12,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 27 remaining) [2022-11-18 18:50:12,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 27 remaining) [2022-11-18 18:50:12,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 27 remaining) [2022-11-18 18:50:12,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 27 remaining) [2022-11-18 18:50:12,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 27 remaining) [2022-11-18 18:50:12,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 27 remaining) [2022-11-18 18:50:12,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 27 remaining) [2022-11-18 18:50:12,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 27 remaining) [2022-11-18 18:50:12,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 27 remaining) [2022-11-18 18:50:12,792 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 27 remaining) [2022-11-18 18:50:12,792 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 27 remaining) [2022-11-18 18:50:12,792 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 27 remaining) [2022-11-18 18:50:12,792 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 27 remaining) [2022-11-18 18:50:12,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 27 remaining) [2022-11-18 18:50:12,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 27 remaining) [2022-11-18 18:50:12,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 27 remaining) [2022-11-18 18:50:12,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 27 remaining) [2022-11-18 18:50:12,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 18:50:12,794 INFO L444 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1] [2022-11-18 18:50:12,795 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 18:50:12,795 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-18 18:50:12,886 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 18:50:12,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 501 places, 569 transitions, 1168 flow [2022-11-18 18:50:13,236 INFO L130 PetriNetUnfolder]: 168/1300 cut-off events. [2022-11-18 18:50:13,236 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-18 18:50:13,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1328 conditions, 1300 events. 168/1300 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 8670 event pairs, 1 based on Foata normal form. 0/1065 useless extension candidates. Maximal degree in co-relation 918. Up to 16 conditions per place. [2022-11-18 18:50:13,272 INFO L82 GeneralOperation]: Start removeDead. Operand has 501 places, 569 transitions, 1168 flow [2022-11-18 18:50:13,289 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 501 places, 569 transitions, 1168 flow [2022-11-18 18:50:13,290 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:50:13,290 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;@1b7d08b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:50:13,291 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2022-11-18 18:50:13,298 INFO L130 PetriNetUnfolder]: 13/117 cut-off events. [2022-11-18 18:50:13,299 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:50:13,299 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:13,299 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:13,299 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-11-18 18:50:13,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:13,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1132581538, now seen corresponding path program 1 times [2022-11-18 18:50:13,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:13,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708791736] [2022-11-18 18:50:13,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:13,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:13,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:13,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:13,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708791736] [2022-11-18 18:50:13,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708791736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:13,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:13,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:50:13,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838292538] [2022-11-18 18:50:13,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:13,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 18:50:13,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:13,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 18:50:13,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:50:13,321 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 496 out of 569 [2022-11-18 18:50:13,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 569 transitions, 1168 flow. Second operand has 2 states, 2 states have (on average 498.0) internal successors, (996), 2 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:13,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:13,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 496 of 569 [2022-11-18 18:50:13,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:13,724 INFO L130 PetriNetUnfolder]: 27/1148 cut-off events. [2022-11-18 18:50:13,724 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-11-18 18:50:13,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1192 conditions, 1148 events. 27/1148 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 7494 event pairs, 1 based on Foata normal form. 244/1287 useless extension candidates. Maximal degree in co-relation 815. Up to 16 conditions per place. [2022-11-18 18:50:13,759 INFO L137 encePairwiseOnDemand]: 507/569 looper letters, 6 selfloop transitions, 0 changer transitions 0/502 dead transitions. [2022-11-18 18:50:13,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 502 transitions, 1046 flow [2022-11-18 18:50:13,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 18:50:13,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 18:50:13,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1060 transitions. [2022-11-18 18:50:13,762 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9314586994727593 [2022-11-18 18:50:13,762 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1060 transitions. [2022-11-18 18:50:13,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1060 transitions. [2022-11-18 18:50:13,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:13,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1060 transitions. [2022-11-18 18:50:13,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 530.0) internal successors, (1060), 2 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:13,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 569.0) internal successors, (1707), 3 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:13,767 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 569.0) internal successors, (1707), 3 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:13,768 INFO L175 Difference]: Start difference. First operand has 501 places, 569 transitions, 1168 flow. Second operand 2 states and 1060 transitions. [2022-11-18 18:50:13,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 502 transitions, 1046 flow [2022-11-18 18:50:13,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 502 transitions, 1046 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:50:13,777 INFO L231 Difference]: Finished difference. Result has 497 places, 502 transitions, 1034 flow [2022-11-18 18:50:13,778 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=569, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=1034, PETRI_PLACES=497, PETRI_TRANSITIONS=502} [2022-11-18 18:50:13,778 INFO L288 CegarLoopForPetriNet]: 501 programPoint places, -4 predicate places. [2022-11-18 18:50:13,779 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 502 transitions, 1034 flow [2022-11-18 18:50:13,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 498.0) internal successors, (996), 2 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:13,779 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:13,779 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:13,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 18:50:13,780 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-11-18 18:50:13,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:13,780 INFO L85 PathProgramCache]: Analyzing trace with hash -89619256, now seen corresponding path program 1 times [2022-11-18 18:50:13,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:13,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758999316] [2022-11-18 18:50:13,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:13,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:13,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:13,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:13,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:13,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758999316] [2022-11-18 18:50:13,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758999316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:13,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:13,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:50:13,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003381853] [2022-11-18 18:50:13,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:13,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:50:13,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:13,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:50:13,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:50:13,817 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 489 out of 569 [2022-11-18 18:50:13,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 502 transitions, 1034 flow. Second operand has 3 states, 3 states have (on average 490.0) internal successors, (1470), 3 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:13,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:13,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 489 of 569 [2022-11-18 18:50:13,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:14,206 INFO L130 PetriNetUnfolder]: 27/1152 cut-off events. [2022-11-18 18:50:14,206 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-11-18 18:50:14,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1208 conditions, 1152 events. 27/1152 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 7501 event pairs, 1 based on Foata normal form. 0/1047 useless extension candidates. Maximal degree in co-relation 1202. Up to 23 conditions per place. [2022-11-18 18:50:14,237 INFO L137 encePairwiseOnDemand]: 566/569 looper letters, 15 selfloop transitions, 2 changer transitions 0/506 dead transitions. [2022-11-18 18:50:14,238 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 506 transitions, 1076 flow [2022-11-18 18:50:14,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:50:14,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:50:14,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1485 transitions. [2022-11-18 18:50:14,240 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8699472759226714 [2022-11-18 18:50:14,241 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1485 transitions. [2022-11-18 18:50:14,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1485 transitions. [2022-11-18 18:50:14,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:14,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1485 transitions. [2022-11-18 18:50:14,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 495.0) internal successors, (1485), 3 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:14,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 569.0) internal successors, (2276), 4 states have internal predecessors, (2276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:14,247 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 569.0) internal successors, (2276), 4 states have internal predecessors, (2276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:14,247 INFO L175 Difference]: Start difference. First operand has 497 places, 502 transitions, 1034 flow. Second operand 3 states and 1485 transitions. [2022-11-18 18:50:14,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 506 transitions, 1076 flow [2022-11-18 18:50:14,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 506 transitions, 1076 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:50:14,256 INFO L231 Difference]: Finished difference. Result has 500 places, 503 transitions, 1046 flow [2022-11-18 18:50:14,257 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=569, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1046, PETRI_PLACES=500, PETRI_TRANSITIONS=503} [2022-11-18 18:50:14,258 INFO L288 CegarLoopForPetriNet]: 501 programPoint places, -1 predicate places. [2022-11-18 18:50:14,258 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 503 transitions, 1046 flow [2022-11-18 18:50:14,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 490.0) internal successors, (1470), 3 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:14,259 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:14,259 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:14,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 18:50:14,260 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-11-18 18:50:14,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:14,260 INFO L85 PathProgramCache]: Analyzing trace with hash 600502667, now seen corresponding path program 1 times [2022-11-18 18:50:14,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:14,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869793856] [2022-11-18 18:50:14,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:14,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:14,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:14,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:14,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:14,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869793856] [2022-11-18 18:50:14,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869793856] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:50:14,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834584607] [2022-11-18 18:50:14,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:14,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:14,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:14,324 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:14,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 18:50:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:14,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 18:50:14,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:14,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:50:14,471 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:50:14,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834584607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:14,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:50:14,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-18 18:50:14,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709225105] [2022-11-18 18:50:14,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:14,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:50:14,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:14,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:50:14,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:50:14,475 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 489 out of 569 [2022-11-18 18:50:14,476 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 503 transitions, 1046 flow. Second operand has 3 states, 3 states have (on average 490.0) internal successors, (1470), 3 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:14,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:14,477 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 489 of 569 [2022-11-18 18:50:14,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:14,838 INFO L130 PetriNetUnfolder]: 23/990 cut-off events. [2022-11-18 18:50:14,838 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-11-18 18:50:14,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1061 conditions, 990 events. 23/990 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 6083 event pairs, 1 based on Foata normal form. 0/902 useless extension candidates. Maximal degree in co-relation 1053. Up to 30 conditions per place. [2022-11-18 18:50:14,867 INFO L137 encePairwiseOnDemand]: 566/569 looper letters, 15 selfloop transitions, 2 changer transitions 0/507 dead transitions. [2022-11-18 18:50:14,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 507 transitions, 1088 flow [2022-11-18 18:50:14,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:50:14,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:50:14,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1485 transitions. [2022-11-18 18:50:14,869 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8699472759226714 [2022-11-18 18:50:14,870 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1485 transitions. [2022-11-18 18:50:14,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1485 transitions. [2022-11-18 18:50:14,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:14,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1485 transitions. [2022-11-18 18:50:14,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 495.0) internal successors, (1485), 3 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:14,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 569.0) internal successors, (2276), 4 states have internal predecessors, (2276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:14,876 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 569.0) internal successors, (2276), 4 states have internal predecessors, (2276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:14,876 INFO L175 Difference]: Start difference. First operand has 500 places, 503 transitions, 1046 flow. Second operand 3 states and 1485 transitions. [2022-11-18 18:50:14,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 507 transitions, 1088 flow [2022-11-18 18:50:14,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 507 transitions, 1086 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:50:14,885 INFO L231 Difference]: Finished difference. Result has 502 places, 504 transitions, 1056 flow [2022-11-18 18:50:14,886 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=569, PETRI_DIFFERENCE_MINUEND_FLOW=1044, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1056, PETRI_PLACES=502, PETRI_TRANSITIONS=504} [2022-11-18 18:50:14,887 INFO L288 CegarLoopForPetriNet]: 501 programPoint places, 1 predicate places. [2022-11-18 18:50:14,887 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 504 transitions, 1056 flow [2022-11-18 18:50:14,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 490.0) internal successors, (1470), 3 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:14,888 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:14,888 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:14,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 18:50:15,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 18:50:15,094 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-11-18 18:50:15,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:15,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1104182971, now seen corresponding path program 1 times [2022-11-18 18:50:15,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:15,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921106924] [2022-11-18 18:50:15,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:15,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:15,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:15,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:50:15,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:15,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921106924] [2022-11-18 18:50:15,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921106924] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:50:15,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257959331] [2022-11-18 18:50:15,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:15,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:15,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:15,174 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:15,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 18:50:15,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:15,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 18:50:15,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:15,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:50:15,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:50:15,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257959331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:15,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:50:15,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-18 18:50:15,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085311198] [2022-11-18 18:50:15,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:15,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:50:15,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:15,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:50:15,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:50:15,337 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 488 out of 569 [2022-11-18 18:50:15,339 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 504 transitions, 1056 flow. Second operand has 3 states, 3 states have (on average 489.6666666666667) internal successors, (1469), 3 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) [2022-11-18 18:50:15,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:15,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 488 of 569 [2022-11-18 18:50:15,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:15,833 INFO L130 PetriNetUnfolder]: 26/1242 cut-off events. [2022-11-18 18:50:15,833 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-11-18 18:50:15,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1334 conditions, 1242 events. 26/1242 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 7247 event pairs, 1 based on Foata normal form. 0/1136 useless extension candidates. Maximal degree in co-relation 1325. Up to 36 conditions per place. [2022-11-18 18:50:15,866 INFO L137 encePairwiseOnDemand]: 566/569 looper letters, 16 selfloop transitions, 2 changer transitions 0/508 dead transitions. [2022-11-18 18:50:15,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 508 transitions, 1100 flow [2022-11-18 18:50:15,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:50:15,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:50:15,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1483 transitions. [2022-11-18 18:50:15,869 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8687756297598125 [2022-11-18 18:50:15,869 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1483 transitions. [2022-11-18 18:50:15,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1483 transitions. [2022-11-18 18:50:15,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:15,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1483 transitions. [2022-11-18 18:50:15,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 494.3333333333333) internal successors, (1483), 3 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:15,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 569.0) internal successors, (2276), 4 states have internal predecessors, (2276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:15,875 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 569.0) internal successors, (2276), 4 states have internal predecessors, (2276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:15,875 INFO L175 Difference]: Start difference. First operand has 502 places, 504 transitions, 1056 flow. Second operand 3 states and 1483 transitions. [2022-11-18 18:50:15,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 508 transitions, 1100 flow [2022-11-18 18:50:15,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 508 transitions, 1098 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:50:15,885 INFO L231 Difference]: Finished difference. Result has 504 places, 505 transitions, 1066 flow [2022-11-18 18:50:15,886 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=569, PETRI_DIFFERENCE_MINUEND_FLOW=1054, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1066, PETRI_PLACES=504, PETRI_TRANSITIONS=505} [2022-11-18 18:50:15,886 INFO L288 CegarLoopForPetriNet]: 501 programPoint places, 3 predicate places. [2022-11-18 18:50:15,887 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 505 transitions, 1066 flow [2022-11-18 18:50:15,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 489.6666666666667) internal successors, (1469), 3 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) [2022-11-18 18:50:15,887 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:15,887 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:15,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 18:50:16,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:16,093 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-11-18 18:50:16,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:16,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1205970116, now seen corresponding path program 1 times [2022-11-18 18:50:16,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:16,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268036646] [2022-11-18 18:50:16,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:16,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:16,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:16,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:16,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:16,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268036646] [2022-11-18 18:50:16,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268036646] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:50:16,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292070243] [2022-11-18 18:50:16,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:16,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:16,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:16,167 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:16,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 18:50:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:16,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:50:16,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:16,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:16,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:50:16,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:16,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292070243] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:50:16,375 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:50:16,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 18:50:16,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320289259] [2022-11-18 18:50:16,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:50:16,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:50:16,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:16,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:50:16,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:50:16,381 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 488 out of 569 [2022-11-18 18:50:16,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 505 transitions, 1066 flow. Second operand has 10 states, 10 states have (on average 490.1) internal successors, (4901), 10 states have internal predecessors, (4901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:16,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:16,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 488 of 569 [2022-11-18 18:50:16,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:16,934 INFO L130 PetriNetUnfolder]: 26/1249 cut-off events. [2022-11-18 18:50:16,935 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2022-11-18 18:50:16,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1344 conditions, 1249 events. 26/1249 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 7248 event pairs, 1 based on Foata normal form. 2/1148 useless extension candidates. Maximal degree in co-relation 1334. Up to 20 conditions per place. [2022-11-18 18:50:16,970 INFO L137 encePairwiseOnDemand]: 563/569 looper letters, 16 selfloop transitions, 9 changer transitions 0/515 dead transitions. [2022-11-18 18:50:16,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 515 transitions, 1138 flow [2022-11-18 18:50:16,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:50:16,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 18:50:16,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4419 transitions. [2022-11-18 18:50:16,978 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8629173989455184 [2022-11-18 18:50:16,979 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4419 transitions. [2022-11-18 18:50:16,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4419 transitions. [2022-11-18 18:50:16,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:16,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4419 transitions. [2022-11-18 18:50:16,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 491.0) internal successors, (4419), 9 states have internal predecessors, (4419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:16,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 569.0) internal successors, (5690), 10 states have internal predecessors, (5690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:16,997 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 569.0) internal successors, (5690), 10 states have internal predecessors, (5690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:16,997 INFO L175 Difference]: Start difference. First operand has 504 places, 505 transitions, 1066 flow. Second operand 9 states and 4419 transitions. [2022-11-18 18:50:16,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 515 transitions, 1138 flow [2022-11-18 18:50:17,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 515 transitions, 1136 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:50:17,008 INFO L231 Difference]: Finished difference. Result has 514 places, 511 transitions, 1114 flow [2022-11-18 18:50:17,009 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=569, PETRI_DIFFERENCE_MINUEND_FLOW=1064, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1114, PETRI_PLACES=514, PETRI_TRANSITIONS=511} [2022-11-18 18:50:17,010 INFO L288 CegarLoopForPetriNet]: 501 programPoint places, 13 predicate places. [2022-11-18 18:50:17,010 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 511 transitions, 1114 flow [2022-11-18 18:50:17,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 490.1) internal successors, (4901), 10 states have internal predecessors, (4901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:17,011 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:17,011 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:17,023 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-18 18:50:17,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:17,217 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-11-18 18:50:17,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:17,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1047191836, now seen corresponding path program 2 times [2022-11-18 18:50:17,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:17,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730869101] [2022-11-18 18:50:17,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:17,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:17,382 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:17,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:17,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730869101] [2022-11-18 18:50:17,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730869101] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:50:17,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144873470] [2022-11-18 18:50:17,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:50:17,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:17,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:17,384 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:17,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07374a48-04e4-4059-af24-10bde088678b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 18:50:17,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:50:17,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:50:17,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:50:17,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:17,585 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 [2022-11-18 18:50:17,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:50:17,637 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:50:17,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-18 18:50:17,677 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:50:17,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 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 [2022-11-18 18:50:17,712 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 18:50:17,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:50:17,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144873470] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:17,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:50:17,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2022-11-18 18:50:17,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966022379] [2022-11-18 18:50:17,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:17,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:50:17,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:17,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:50:17,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-18 18:50:17,717 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 569 [2022-11-18 18:50:17,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 511 transitions, 1114 flow. Second operand has 6 states, 6 states have (on average 332.6666666666667) internal successors, (1996), 6 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:17,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:17,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 569 [2022-11-18 18:50:17,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand