./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_03-funloop_simple.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_03-funloop_simple.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8 --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 8259c4061eb15e4ed63bc06f98acbb6dc3f9862bbe262b5cabdd3ad4658d3239 --- 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-e04fb08 [2022-11-16 11:19:33,005 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:19:33,008 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:19:33,067 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:19:33,068 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:19:33,074 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:19:33,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:19:33,081 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:19:33,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:19:33,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:19:33,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:19:33,095 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:19:33,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:19:33,103 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:19:33,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:19:33,107 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:19:33,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:19:33,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:19:33,113 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:19:33,123 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:19:33,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:19:33,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:19:33,133 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:19:33,134 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:19:33,142 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:19:33,146 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:19:33,147 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:19:33,149 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:19:33,150 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:19:33,152 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:19:33,152 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:19:33,154 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:19:33,157 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:19:33,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:19:33,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:19:33,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:19:33,165 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:19:33,165 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:19:33,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:19:33,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:19:33,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:19:33,169 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-16 11:19:33,225 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:19:33,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:19:33,227 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:19:33,227 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:19:33,229 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:19:33,229 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:19:33,230 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:19:33,231 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:19:33,231 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:19:33,231 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:19:33,233 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:19:33,233 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:19:33,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:19:33,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:19:33,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:19:33,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:19:33,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:19:33,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:19:33,235 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-16 11:19:33,236 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:19:33,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:19:33,236 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:19:33,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:19:33,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:19:33,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:19:33,237 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:19:33,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:19:33,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:19:33,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:19:33,239 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:19:33,239 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:19:33,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:19:33,240 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:19:33,240 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:19:33,240 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:19:33,241 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_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8259c4061eb15e4ed63bc06f98acbb6dc3f9862bbe262b5cabdd3ad4658d3239 [2022-11-16 11:19:33,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:19:33,696 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:19:33,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:19:33,701 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:19:33,702 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:19:33,704 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/06-symbeq_03-funloop_simple.i [2022-11-16 11:19:33,790 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/data/b9a3e89e5/d2ac2c7bd0aa43e788d56a26f127d7ff/FLAGa64a55b2f [2022-11-16 11:19:34,363 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:19:34,363 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/sv-benchmarks/c/goblint-regression/06-symbeq_03-funloop_simple.i [2022-11-16 11:19:34,376 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/data/b9a3e89e5/d2ac2c7bd0aa43e788d56a26f127d7ff/FLAGa64a55b2f [2022-11-16 11:19:34,671 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/data/b9a3e89e5/d2ac2c7bd0aa43e788d56a26f127d7ff [2022-11-16 11:19:34,674 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:19:34,676 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:19:34,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:19:34,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:19:34,684 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:19:34,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:19:34" (1/1) ... [2022-11-16 11:19:34,687 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ea61a4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:19:34, skipping insertion in model container [2022-11-16 11:19:34,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:19:34" (1/1) ... [2022-11-16 11:19:34,695 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:19:34,761 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:19:35,470 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:19:35,490 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:19:35,555 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:19:35,615 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:19:35,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:19:35 WrapperNode [2022-11-16 11:19:35,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:19:35,617 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:19:35,617 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:19:35,617 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:19:35,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:19:35" (1/1) ... [2022-11-16 11:19:35,654 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:19:35" (1/1) ... [2022-11-16 11:19:35,701 INFO L138 Inliner]: procedures = 262, calls = 15, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 112 [2022-11-16 11:19:35,711 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:19:35,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:19:35,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:19:35,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:19:35,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:19:35" (1/1) ... [2022-11-16 11:19:35,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:19:35" (1/1) ... [2022-11-16 11:19:35,729 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:19:35" (1/1) ... [2022-11-16 11:19:35,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:19:35" (1/1) ... [2022-11-16 11:19:35,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:19:35" (1/1) ... [2022-11-16 11:19:35,770 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:19:35" (1/1) ... [2022-11-16 11:19:35,772 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:19:35" (1/1) ... [2022-11-16 11:19:35,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:19:35" (1/1) ... [2022-11-16 11:19:35,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:19:35,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:19:35,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:19:35,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:19:35,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:19:35" (1/1) ... [2022-11-16 11:19:35,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:19:35,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:19:35,818 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:19:35,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:19:35,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:19:35,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:19:35,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:19:35,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:19:35,879 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 11:19:35,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:19:35,880 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-16 11:19:35,880 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-16 11:19:35,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:19:35,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:19:35,882 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:19:36,082 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:19:36,084 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:19:36,440 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:19:36,447 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:19:36,448 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-16 11:19:36,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:19:36 BoogieIcfgContainer [2022-11-16 11:19:36,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:19:36,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:19:36,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:19:36,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:19:36,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:19:34" (1/3) ... [2022-11-16 11:19:36,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32dd608a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:19:36, skipping insertion in model container [2022-11-16 11:19:36,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:19:35" (2/3) ... [2022-11-16 11:19:36,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32dd608a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:19:36, skipping insertion in model container [2022-11-16 11:19:36,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:19:36" (3/3) ... [2022-11-16 11:19:36,464 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_03-funloop_simple.i [2022-11-16 11:19:36,474 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:19:36,486 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:19:36,487 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-16 11:19:36,487 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:19:36,607 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 11:19:36,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 125 transitions, 255 flow [2022-11-16 11:19:36,759 INFO L130 PetriNetUnfolder]: 6/124 cut-off events. [2022-11-16 11:19:36,759 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:19:36,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 124 events. 6/124 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 217 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 99. Up to 2 conditions per place. [2022-11-16 11:19:36,766 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 125 transitions, 255 flow [2022-11-16 11:19:36,770 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 124 transitions, 251 flow [2022-11-16 11:19:36,781 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:19:36,787 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;@4486c524, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:19:36,788 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-16 11:19:36,801 INFO L130 PetriNetUnfolder]: 4/56 cut-off events. [2022-11-16 11:19:36,801 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:19:36,802 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:19:36,802 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] [2022-11-16 11:19:36,803 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:19:36,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:36,809 INFO L85 PathProgramCache]: Analyzing trace with hash 397060765, now seen corresponding path program 1 times [2022-11-16 11:19:36,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:36,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476534298] [2022-11-16 11:19:36,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:36,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:37,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:37,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:37,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476534298] [2022-11-16 11:19:37,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476534298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:37,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:19:37,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:19:37,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201971945] [2022-11-16 11:19:37,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:37,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:19:37,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:37,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:19:37,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:19:37,187 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 125 [2022-11-16 11:19:37,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 124 transitions, 251 flow. Second operand has 2 states, 2 states have (on average 122.5) internal successors, (245), 2 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:37,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:19:37,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 125 [2022-11-16 11:19:37,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:19:37,265 INFO L130 PetriNetUnfolder]: 3/121 cut-off events. [2022-11-16 11:19:37,269 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:19:37,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 121 events. 3/121 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 215 event pairs, 0 based on Foata normal form. 3/115 useless extension candidates. Maximal degree in co-relation 97. Up to 2 conditions per place. [2022-11-16 11:19:37,274 INFO L137 encePairwiseOnDemand]: 122/125 looper letters, 1 selfloop transitions, 0 changer transitions 0/121 dead transitions. [2022-11-16 11:19:37,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 121 transitions, 247 flow [2022-11-16 11:19:37,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:19:37,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 11:19:37,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 246 transitions. [2022-11-16 11:19:37,291 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.984 [2022-11-16 11:19:37,292 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 246 transitions. [2022-11-16 11:19:37,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 246 transitions. [2022-11-16 11:19:37,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:19:37,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 246 transitions. [2022-11-16 11:19:37,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 123.0) internal successors, (246), 2 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:37,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:37,309 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:37,311 INFO L175 Difference]: Start difference. First operand has 122 places, 124 transitions, 251 flow. Second operand 2 states and 246 transitions. [2022-11-16 11:19:37,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 121 transitions, 247 flow [2022-11-16 11:19:37,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 121 transitions, 246 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:19:37,323 INFO L231 Difference]: Finished difference. Result has 122 places, 121 transitions, 244 flow [2022-11-16 11:19:37,325 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=244, PETRI_PLACES=122, PETRI_TRANSITIONS=121} [2022-11-16 11:19:37,333 INFO L288 CegarLoopForPetriNet]: 122 programPoint places, 0 predicate places. [2022-11-16 11:19:37,334 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 121 transitions, 244 flow [2022-11-16 11:19:37,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 122.5) internal successors, (245), 2 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:37,335 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:19:37,335 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] [2022-11-16 11:19:37,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:19:37,336 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:19:37,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:37,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1657093153, now seen corresponding path program 1 times [2022-11-16 11:19:37,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:37,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504667231] [2022-11-16 11:19:37,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:37,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:37,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:37,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:37,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504667231] [2022-11-16 11:19:37,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504667231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:37,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:19:37,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:19:37,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255415712] [2022-11-16 11:19:37,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:37,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:19:37,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:37,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:19:37,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:19:37,464 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 125 [2022-11-16 11:19:37,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 121 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:37,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:19:37,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 125 [2022-11-16 11:19:37,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:19:37,536 INFO L130 PetriNetUnfolder]: 3/125 cut-off events. [2022-11-16 11:19:37,536 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:19:37,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 125 events. 3/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 213 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 139. Up to 9 conditions per place. [2022-11-16 11:19:37,547 INFO L137 encePairwiseOnDemand]: 122/125 looper letters, 10 selfloop transitions, 2 changer transitions 0/125 dead transitions. [2022-11-16 11:19:37,548 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 125 transitions, 276 flow [2022-11-16 11:19:37,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:19:37,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:19:37,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2022-11-16 11:19:37,555 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9466666666666667 [2022-11-16 11:19:37,556 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 355 transitions. [2022-11-16 11:19:37,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 355 transitions. [2022-11-16 11:19:37,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:19:37,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 355 transitions. [2022-11-16 11:19:37,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:37,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:37,566 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:37,566 INFO L175 Difference]: Start difference. First operand has 122 places, 121 transitions, 244 flow. Second operand 3 states and 355 transitions. [2022-11-16 11:19:37,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 125 transitions, 276 flow [2022-11-16 11:19:37,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 125 transitions, 276 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:19:37,573 INFO L231 Difference]: Finished difference. Result has 125 places, 122 transitions, 256 flow [2022-11-16 11:19:37,573 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=125, PETRI_TRANSITIONS=122} [2022-11-16 11:19:37,574 INFO L288 CegarLoopForPetriNet]: 122 programPoint places, 3 predicate places. [2022-11-16 11:19:37,574 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 122 transitions, 256 flow [2022-11-16 11:19:37,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:37,575 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:19:37,575 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] [2022-11-16 11:19:37,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:19:37,576 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:19:37,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:37,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1891473138, now seen corresponding path program 1 times [2022-11-16 11:19:37,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:37,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525571669] [2022-11-16 11:19:37,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:37,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:37,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:37,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:37,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525571669] [2022-11-16 11:19:37,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525571669] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:19:37,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730968013] [2022-11-16 11:19:37,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:37,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:19:37,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:19:37,867 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:19:37,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:19:37,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:37,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:19:38,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:19:38,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:19:38,046 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:19:38,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730968013] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:38,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:19:38,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-16 11:19:38,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385200888] [2022-11-16 11:19:38,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:38,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:19:38,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:38,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:19:38,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:19:38,058 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 125 [2022-11-16 11:19:38,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 122 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:38,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:19:38,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 125 [2022-11-16 11:19:38,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:19:38,144 INFO L130 PetriNetUnfolder]: 3/155 cut-off events. [2022-11-16 11:19:38,145 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:19:38,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 155 events. 3/155 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 157 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 175. Up to 10 conditions per place. [2022-11-16 11:19:38,148 INFO L137 encePairwiseOnDemand]: 122/125 looper letters, 11 selfloop transitions, 2 changer transitions 0/126 dead transitions. [2022-11-16 11:19:38,149 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 126 transitions, 290 flow [2022-11-16 11:19:38,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:19:38,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:19:38,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 353 transitions. [2022-11-16 11:19:38,153 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9413333333333334 [2022-11-16 11:19:38,153 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 353 transitions. [2022-11-16 11:19:38,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 353 transitions. [2022-11-16 11:19:38,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:19:38,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 353 transitions. [2022-11-16 11:19:38,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:38,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:38,159 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:38,160 INFO L175 Difference]: Start difference. First operand has 125 places, 122 transitions, 256 flow. Second operand 3 states and 353 transitions. [2022-11-16 11:19:38,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 126 transitions, 290 flow [2022-11-16 11:19:38,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 126 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:19:38,166 INFO L231 Difference]: Finished difference. Result has 127 places, 123 transitions, 266 flow [2022-11-16 11:19:38,167 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=127, PETRI_TRANSITIONS=123} [2022-11-16 11:19:38,173 INFO L288 CegarLoopForPetriNet]: 122 programPoint places, 5 predicate places. [2022-11-16 11:19:38,173 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 123 transitions, 266 flow [2022-11-16 11:19:38,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:38,174 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:19:38,175 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] [2022-11-16 11:19:38,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:19:38,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:19:38,382 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:19:38,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:38,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1317859348, now seen corresponding path program 1 times [2022-11-16 11:19:38,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:38,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367743180] [2022-11-16 11:19:38,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:38,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:38,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:38,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:38,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367743180] [2022-11-16 11:19:38,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367743180] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:19:38,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244408874] [2022-11-16 11:19:38,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:38,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:19:38,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:19:38,668 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:19:38,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:19:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:38,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:19:38,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:19:38,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:38,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:19:38,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:38,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244408874] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:19:38,927 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:19:38,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 11:19:38,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100083596] [2022-11-16 11:19:38,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:19:38,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:19:38,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:38,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:19:38,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:19:38,933 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 125 [2022-11-16 11:19:38,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 123 transitions, 266 flow. Second operand has 10 states, 10 states have (on average 115.1) internal successors, (1151), 10 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:38,937 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:19:38,938 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 125 [2022-11-16 11:19:38,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:19:39,090 INFO L130 PetriNetUnfolder]: 3/162 cut-off events. [2022-11-16 11:19:39,090 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:19:39,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 162 events. 3/162 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 152 event pairs, 0 based on Foata normal form. 2/155 useless extension candidates. Maximal degree in co-relation 194. Up to 6 conditions per place. [2022-11-16 11:19:39,093 INFO L137 encePairwiseOnDemand]: 119/125 looper letters, 11 selfloop transitions, 9 changer transitions 0/133 dead transitions. [2022-11-16 11:19:39,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 133 transitions, 328 flow [2022-11-16 11:19:39,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:19:39,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:19:39,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1039 transitions. [2022-11-16 11:19:39,098 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9235555555555556 [2022-11-16 11:19:39,098 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1039 transitions. [2022-11-16 11:19:39,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1039 transitions. [2022-11-16 11:19:39,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:19:39,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1039 transitions. [2022-11-16 11:19:39,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 115.44444444444444) internal successors, (1039), 9 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:39,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 125.0) internal successors, (1250), 10 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:39,108 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 125.0) internal successors, (1250), 10 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:39,109 INFO L175 Difference]: Start difference. First operand has 127 places, 123 transitions, 266 flow. Second operand 9 states and 1039 transitions. [2022-11-16 11:19:39,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 133 transitions, 328 flow [2022-11-16 11:19:39,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 133 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:19:39,113 INFO L231 Difference]: Finished difference. Result has 137 places, 129 transitions, 314 flow [2022-11-16 11:19:39,114 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=314, PETRI_PLACES=137, PETRI_TRANSITIONS=129} [2022-11-16 11:19:39,115 INFO L288 CegarLoopForPetriNet]: 122 programPoint places, 15 predicate places. [2022-11-16 11:19:39,115 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 129 transitions, 314 flow [2022-11-16 11:19:39,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 115.1) internal successors, (1151), 10 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:39,116 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:19:39,117 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] [2022-11-16 11:19:39,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:19:39,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:19:39,323 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:19:39,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:39,324 INFO L85 PathProgramCache]: Analyzing trace with hash -626594124, now seen corresponding path program 2 times [2022-11-16 11:19:39,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:39,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853201570] [2022-11-16 11:19:39,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:39,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:39,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:39,563 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:39,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:39,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853201570] [2022-11-16 11:19:39,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853201570] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:19:39,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747275636] [2022-11-16 11:19:39,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:19:39,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:19:39,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:19:39,573 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:19:39,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:19:39,700 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:19:39,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:19:39,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 11:19:39,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:19:39,777 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 [2022-11-16 11:19:39,816 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 [2022-11-16 11:19:39,862 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:19:39,863 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 [2022-11-16 11:19:39,922 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:19:39,923 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 [2022-11-16 11:19:39,964 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 11:19:39,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:19:39,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747275636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:39,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:19:39,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2022-11-16 11:19:39,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554337978] [2022-11-16 11:19:39,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:39,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:19:39,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:39,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:19:39,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:19:39,971 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 125 [2022-11-16 11:19:39,973 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 129 transitions, 314 flow. Second operand has 6 states, 6 states have (on average 80.66666666666667) internal successors, (484), 6 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:39,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:19:39,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 125 [2022-11-16 11:19:39,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:19:40,854 INFO L130 PetriNetUnfolder]: 779/2745 cut-off events. [2022-11-16 11:19:40,854 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-16 11:19:40,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4359 conditions, 2745 events. 779/2745 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 19625 event pairs, 424 based on Foata normal form. 0/2478 useless extension candidates. Maximal degree in co-relation 4351. Up to 1258 conditions per place. [2022-11-16 11:19:40,873 INFO L137 encePairwiseOnDemand]: 114/125 looper letters, 75 selfloop transitions, 22 changer transitions 0/183 dead transitions. [2022-11-16 11:19:40,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 183 transitions, 616 flow [2022-11-16 11:19:40,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:19:40,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:19:40,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 572 transitions. [2022-11-16 11:19:40,876 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7626666666666667 [2022-11-16 11:19:40,877 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 572 transitions. [2022-11-16 11:19:40,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 572 transitions. [2022-11-16 11:19:40,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:19:40,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 572 transitions. [2022-11-16 11:19:40,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 95.33333333333333) internal successors, (572), 6 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:40,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:40,883 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:40,883 INFO L175 Difference]: Start difference. First operand has 137 places, 129 transitions, 314 flow. Second operand 6 states and 572 transitions. [2022-11-16 11:19:40,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 183 transitions, 616 flow [2022-11-16 11:19:40,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 183 transitions, 610 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-16 11:19:40,890 INFO L231 Difference]: Finished difference. Result has 146 places, 150 transitions, 458 flow [2022-11-16 11:19:40,890 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=458, PETRI_PLACES=146, PETRI_TRANSITIONS=150} [2022-11-16 11:19:40,893 INFO L288 CegarLoopForPetriNet]: 122 programPoint places, 24 predicate places. [2022-11-16 11:19:40,893 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 150 transitions, 458 flow [2022-11-16 11:19:40,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 80.66666666666667) internal successors, (484), 6 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:40,894 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:19:40,895 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] [2022-11-16 11:19:40,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-16 11:19:41,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:19:41,100 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:19:41,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:41,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1030322137, now seen corresponding path program 1 times [2022-11-16 11:19:41,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:41,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624051791] [2022-11-16 11:19:41,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:41,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:41,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:41,343 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:41,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:41,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624051791] [2022-11-16 11:19:41,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624051791] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:19:41,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787899876] [2022-11-16 11:19:41,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:41,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:19:41,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:19:41,345 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:19:41,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:19:41,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:41,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:19:41,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:19:41,549 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:41,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:19:41,663 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:41,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787899876] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:19:41,663 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:19:41,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-16 11:19:41,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608711442] [2022-11-16 11:19:41,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:19:41,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:19:41,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:41,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:19:41,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:19:41,668 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 125 [2022-11-16 11:19:41,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 150 transitions, 458 flow. Second operand has 18 states, 18 states have (on average 115.27777777777777) internal successors, (2075), 18 states have internal predecessors, (2075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:41,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:19:41,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 125 [2022-11-16 11:19:41,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:19:42,060 INFO L130 PetriNetUnfolder]: 99/814 cut-off events. [2022-11-16 11:19:42,060 INFO L131 PetriNetUnfolder]: For 74/80 co-relation queries the response was YES. [2022-11-16 11:19:42,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1232 conditions, 814 events. 99/814 cut-off events. For 74/80 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4087 event pairs, 8 based on Foata normal form. 4/766 useless extension candidates. Maximal degree in co-relation 1219. Up to 110 conditions per place. [2022-11-16 11:19:42,067 INFO L137 encePairwiseOnDemand]: 119/125 looper letters, 19 selfloop transitions, 21 changer transitions 0/174 dead transitions. [2022-11-16 11:19:42,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 174 transitions, 638 flow [2022-11-16 11:19:42,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:19:42,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 11:19:42,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2417 transitions. [2022-11-16 11:19:42,073 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9207619047619048 [2022-11-16 11:19:42,074 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2417 transitions. [2022-11-16 11:19:42,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2417 transitions. [2022-11-16 11:19:42,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:19:42,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2417 transitions. [2022-11-16 11:19:42,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 115.0952380952381) internal successors, (2417), 21 states have internal predecessors, (2417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:42,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 125.0) internal successors, (2750), 22 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:42,088 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 125.0) internal successors, (2750), 22 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:42,088 INFO L175 Difference]: Start difference. First operand has 146 places, 150 transitions, 458 flow. Second operand 21 states and 2417 transitions. [2022-11-16 11:19:42,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 174 transitions, 638 flow [2022-11-16 11:19:42,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 174 transitions, 638 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:19:42,102 INFO L231 Difference]: Finished difference. Result has 171 places, 163 transitions, 588 flow [2022-11-16 11:19:42,103 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=588, PETRI_PLACES=171, PETRI_TRANSITIONS=163} [2022-11-16 11:19:42,105 INFO L288 CegarLoopForPetriNet]: 122 programPoint places, 49 predicate places. [2022-11-16 11:19:42,105 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 163 transitions, 588 flow [2022-11-16 11:19:42,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 115.27777777777777) internal successors, (2075), 18 states have internal predecessors, (2075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:42,107 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:19:42,108 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:19:42,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:19:42,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:19:42,313 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:19:42,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:42,314 INFO L85 PathProgramCache]: Analyzing trace with hash -461165209, now seen corresponding path program 2 times [2022-11-16 11:19:42,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:42,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390711035] [2022-11-16 11:19:42,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:42,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:42,753 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:42,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:42,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390711035] [2022-11-16 11:19:42,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390711035] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:19:42,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430158937] [2022-11-16 11:19:42,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:19:42,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:19:42,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:19:42,764 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:19:42,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:19:42,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:19:42,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:19:42,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-16 11:19:42,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:19:43,060 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 [2022-11-16 11:19:43,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:43,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 11:19:43,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:43,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:43,147 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:19:43,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-16 11:19:43,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:43,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:43,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:19:43,208 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:19:43,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-16 11:19:43,249 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-16 11:19:43,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:19:43,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430158937] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:43,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:19:43,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [17] total 25 [2022-11-16 11:19:43,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628781251] [2022-11-16 11:19:43,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:43,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:19:43,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:43,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:19:43,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2022-11-16 11:19:43,252 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 125 [2022-11-16 11:19:43,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 163 transitions, 588 flow. Second operand has 10 states, 10 states have (on average 68.6) internal successors, (686), 10 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:43,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:19:43,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 125 [2022-11-16 11:19:43,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:19:45,530 INFO L130 PetriNetUnfolder]: 2548/6821 cut-off events. [2022-11-16 11:19:45,531 INFO L131 PetriNetUnfolder]: For 2130/2146 co-relation queries the response was YES. [2022-11-16 11:19:45,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14272 conditions, 6821 events. 2548/6821 cut-off events. For 2130/2146 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 52613 event pairs, 956 based on Foata normal form. 0/6248 useless extension candidates. Maximal degree in co-relation 14254. Up to 2498 conditions per place. [2022-11-16 11:19:45,579 INFO L137 encePairwiseOnDemand]: 107/125 looper letters, 347 selfloop transitions, 33 changer transitions 0/467 dead transitions. [2022-11-16 11:19:45,580 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 467 transitions, 2286 flow [2022-11-16 11:19:45,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:19:45,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 11:19:45,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1130 transitions. [2022-11-16 11:19:45,583 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7533333333333333 [2022-11-16 11:19:45,584 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1130 transitions. [2022-11-16 11:19:45,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1130 transitions. [2022-11-16 11:19:45,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:19:45,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1130 transitions. [2022-11-16 11:19:45,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 94.16666666666667) internal successors, (1130), 12 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:45,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 125.0) internal successors, (1625), 13 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:45,591 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 125.0) internal successors, (1625), 13 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:45,592 INFO L175 Difference]: Start difference. First operand has 171 places, 163 transitions, 588 flow. Second operand 12 states and 1130 transitions. [2022-11-16 11:19:45,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 467 transitions, 2286 flow [2022-11-16 11:19:45,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 467 transitions, 2262 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-11-16 11:19:45,607 INFO L231 Difference]: Finished difference. Result has 184 places, 194 transitions, 850 flow [2022-11-16 11:19:45,607 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=850, PETRI_PLACES=184, PETRI_TRANSITIONS=194} [2022-11-16 11:19:45,609 INFO L288 CegarLoopForPetriNet]: 122 programPoint places, 62 predicate places. [2022-11-16 11:19:45,609 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 194 transitions, 850 flow [2022-11-16 11:19:45,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 68.6) internal successors, (686), 10 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:45,610 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:19:45,610 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:19:45,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-16 11:19:45,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 11:19:45,815 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:19:45,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:45,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1158747276, now seen corresponding path program 1 times [2022-11-16 11:19:45,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:45,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024460441] [2022-11-16 11:19:45,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:45,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:45,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:46,209 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:46,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:46,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024460441] [2022-11-16 11:19:46,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024460441] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:19:46,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186482945] [2022-11-16 11:19:46,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:46,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:19:46,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:19:46,212 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:19:46,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:19:46,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:46,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 11:19:46,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:19:46,432 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:46,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:19:46,650 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:19:46,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186482945] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:19:46,651 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:19:46,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-16 11:19:46,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723594284] [2022-11-16 11:19:46,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:19:46,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 11:19:46,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:46,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 11:19:46,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-16 11:19:46,656 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 125 [2022-11-16 11:19:46,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 194 transitions, 850 flow. Second operand has 23 states, 23 states have (on average 115.43478260869566) internal successors, (2655), 23 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:46,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:19:46,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 125 [2022-11-16 11:19:46,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:19:47,392 INFO L130 PetriNetUnfolder]: 293/2042 cut-off events. [2022-11-16 11:19:47,392 INFO L131 PetriNetUnfolder]: For 1251/1309 co-relation queries the response was YES. [2022-11-16 11:19:47,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3960 conditions, 2042 events. 293/2042 cut-off events. For 1251/1309 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 14589 event pairs, 69 based on Foata normal form. 7/1964 useless extension candidates. Maximal degree in co-relation 3933. Up to 260 conditions per place. [2022-11-16 11:19:47,407 INFO L137 encePairwiseOnDemand]: 119/125 looper letters, 25 selfloop transitions, 30 changer transitions 0/220 dead transitions. [2022-11-16 11:19:47,407 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 220 transitions, 1100 flow [2022-11-16 11:19:47,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 11:19:47,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 11:19:47,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3448 transitions. [2022-11-16 11:19:47,415 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9194666666666667 [2022-11-16 11:19:47,415 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3448 transitions. [2022-11-16 11:19:47,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3448 transitions. [2022-11-16 11:19:47,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:19:47,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3448 transitions. [2022-11-16 11:19:47,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 114.93333333333334) internal successors, (3448), 30 states have internal predecessors, (3448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:47,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 125.0) internal successors, (3875), 31 states have internal predecessors, (3875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:47,435 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 125.0) internal successors, (3875), 31 states have internal predecessors, (3875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:47,435 INFO L175 Difference]: Start difference. First operand has 184 places, 194 transitions, 850 flow. Second operand 30 states and 3448 transitions. [2022-11-16 11:19:47,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 220 transitions, 1100 flow [2022-11-16 11:19:47,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 220 transitions, 1099 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:19:47,446 INFO L231 Difference]: Finished difference. Result has 216 places, 204 transitions, 1001 flow [2022-11-16 11:19:47,447 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1001, PETRI_PLACES=216, PETRI_TRANSITIONS=204} [2022-11-16 11:19:47,449 INFO L288 CegarLoopForPetriNet]: 122 programPoint places, 94 predicate places. [2022-11-16 11:19:47,450 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 204 transitions, 1001 flow [2022-11-16 11:19:47,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 115.43478260869566) internal successors, (2655), 23 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:47,451 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:19:47,451 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:19:47,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:19:47,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:19:47,656 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:19:47,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:47,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1991683229, now seen corresponding path program 2 times [2022-11-16 11:19:47,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:47,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027962365] [2022-11-16 11:19:47,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:47,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:47,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:48,321 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-16 11:19:48,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:48,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027962365] [2022-11-16 11:19:48,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027962365] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:48,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:19:48,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:19:48,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428156784] [2022-11-16 11:19:48,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:48,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:19:48,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:48,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:19:48,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:19:48,325 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 125 [2022-11-16 11:19:48,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 204 transitions, 1001 flow. Second operand has 6 states, 6 states have (on average 79.83333333333333) internal successors, (479), 6 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:48,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:19:48,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 125 [2022-11-16 11:19:48,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:19:50,033 INFO L130 PetriNetUnfolder]: 1977/6572 cut-off events. [2022-11-16 11:19:50,034 INFO L131 PetriNetUnfolder]: For 4604/4718 co-relation queries the response was YES. [2022-11-16 11:19:50,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15748 conditions, 6572 events. 1977/6572 cut-off events. For 4604/4718 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 54048 event pairs, 866 based on Foata normal form. 73/6310 useless extension candidates. Maximal degree in co-relation 15718. Up to 3476 conditions per place. [2022-11-16 11:19:50,093 INFO L137 encePairwiseOnDemand]: 110/125 looper letters, 106 selfloop transitions, 57 changer transitions 0/275 dead transitions. [2022-11-16 11:19:50,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 275 transitions, 1661 flow [2022-11-16 11:19:50,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:19:50,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:19:50,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 561 transitions. [2022-11-16 11:19:50,095 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.748 [2022-11-16 11:19:50,095 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 561 transitions. [2022-11-16 11:19:50,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 561 transitions. [2022-11-16 11:19:50,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:19:50,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 561 transitions. [2022-11-16 11:19:50,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.5) internal successors, (561), 6 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:50,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:50,101 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:50,101 INFO L175 Difference]: Start difference. First operand has 216 places, 204 transitions, 1001 flow. Second operand 6 states and 561 transitions. [2022-11-16 11:19:50,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 275 transitions, 1661 flow [2022-11-16 11:19:50,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 275 transitions, 1615 flow, removed 5 selfloop flow, removed 18 redundant places. [2022-11-16 11:19:50,118 INFO L231 Difference]: Finished difference. Result has 208 places, 255 transitions, 1489 flow [2022-11-16 11:19:50,118 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=955, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1489, PETRI_PLACES=208, PETRI_TRANSITIONS=255} [2022-11-16 11:19:50,119 INFO L288 CegarLoopForPetriNet]: 122 programPoint places, 86 predicate places. [2022-11-16 11:19:50,119 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 255 transitions, 1489 flow [2022-11-16 11:19:50,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 79.83333333333333) internal successors, (479), 6 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:50,120 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:19:50,120 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:19:50,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:19:50,121 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:19:50,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:50,121 INFO L85 PathProgramCache]: Analyzing trace with hash 698436477, now seen corresponding path program 1 times [2022-11-16 11:19:50,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:50,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302063640] [2022-11-16 11:19:50,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:50,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:50,647 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-16 11:19:50,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:50,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302063640] [2022-11-16 11:19:50,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302063640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:50,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:19:50,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:19:50,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751398437] [2022-11-16 11:19:50,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:50,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:19:50,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:50,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:19:50,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:19:50,652 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 125 [2022-11-16 11:19:50,653 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 255 transitions, 1489 flow. Second operand has 6 states, 6 states have (on average 79.83333333333333) internal successors, (479), 6 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:50,653 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:19:50,653 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 125 [2022-11-16 11:19:50,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:19:52,997 INFO L130 PetriNetUnfolder]: 2720/8328 cut-off events. [2022-11-16 11:19:52,997 INFO L131 PetriNetUnfolder]: For 13120/13210 co-relation queries the response was YES. [2022-11-16 11:19:53,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23936 conditions, 8328 events. 2720/8328 cut-off events. For 13120/13210 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 70156 event pairs, 950 based on Foata normal form. 6/8040 useless extension candidates. Maximal degree in co-relation 23901. Up to 4699 conditions per place. [2022-11-16 11:19:53,066 INFO L137 encePairwiseOnDemand]: 102/125 looper letters, 160 selfloop transitions, 103 changer transitions 0/374 dead transitions. [2022-11-16 11:19:53,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 374 transitions, 2643 flow [2022-11-16 11:19:53,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:19:53,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:19:53,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 609 transitions. [2022-11-16 11:19:53,069 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.812 [2022-11-16 11:19:53,069 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 609 transitions. [2022-11-16 11:19:53,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 609 transitions. [2022-11-16 11:19:53,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:19:53,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 609 transitions. [2022-11-16 11:19:53,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 101.5) internal successors, (609), 6 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:53,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:53,074 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:53,074 INFO L175 Difference]: Start difference. First operand has 208 places, 255 transitions, 1489 flow. Second operand 6 states and 609 transitions. [2022-11-16 11:19:53,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 374 transitions, 2643 flow [2022-11-16 11:19:53,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 374 transitions, 2543 flow, removed 50 selfloop flow, removed 0 redundant places. [2022-11-16 11:19:53,117 INFO L231 Difference]: Finished difference. Result has 218 places, 340 transitions, 2379 flow [2022-11-16 11:19:53,118 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=1413, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2379, PETRI_PLACES=218, PETRI_TRANSITIONS=340} [2022-11-16 11:19:53,119 INFO L288 CegarLoopForPetriNet]: 122 programPoint places, 96 predicate places. [2022-11-16 11:19:53,119 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 340 transitions, 2379 flow [2022-11-16 11:19:53,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 79.83333333333333) internal successors, (479), 6 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:53,119 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:19:53,120 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:19:53,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:19:53,120 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:19:53,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:19:53,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1898019225, now seen corresponding path program 1 times [2022-11-16 11:19:53,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:19:53,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047840936] [2022-11-16 11:19:53,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:53,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:19:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:54,487 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-16 11:19:54,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:19:54,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047840936] [2022-11-16 11:19:54,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047840936] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:19:54,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965700144] [2022-11-16 11:19:54,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:19:54,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:19:54,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:19:54,494 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:19:54,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:19:54,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:19:54,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 11:19:54,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:19:54,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:19:54,980 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-16 11:19:54,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:19:54,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965700144] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:19:54,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:19:54,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2022-11-16 11:19:54,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957088282] [2022-11-16 11:19:54,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:19:54,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:19:54,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:19:54,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:19:54,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:19:54,984 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 125 [2022-11-16 11:19:54,985 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 340 transitions, 2379 flow. Second operand has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:54,985 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:19:54,985 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 125 [2022-11-16 11:19:54,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:19:59,573 INFO L130 PetriNetUnfolder]: 6567/16955 cut-off events. [2022-11-16 11:19:59,574 INFO L131 PetriNetUnfolder]: For 33648/33648 co-relation queries the response was YES. [2022-11-16 11:19:59,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53218 conditions, 16955 events. 6567/16955 cut-off events. For 33648/33648 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 143509 event pairs, 1755 based on Foata normal form. 13/16651 useless extension candidates. Maximal degree in co-relation 53178. Up to 5912 conditions per place. [2022-11-16 11:19:59,721 INFO L137 encePairwiseOnDemand]: 112/125 looper letters, 841 selfloop transitions, 16 changer transitions 0/941 dead transitions. [2022-11-16 11:19:59,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 941 transitions, 8579 flow [2022-11-16 11:19:59,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:19:59,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 11:19:59,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 952 transitions. [2022-11-16 11:19:59,727 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6346666666666667 [2022-11-16 11:19:59,727 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 952 transitions. [2022-11-16 11:19:59,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 952 transitions. [2022-11-16 11:19:59,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:19:59,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 952 transitions. [2022-11-16 11:19:59,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 79.33333333333333) internal successors, (952), 12 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:59,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 125.0) internal successors, (1625), 13 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:59,735 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 125.0) internal successors, (1625), 13 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:59,735 INFO L175 Difference]: Start difference. First operand has 218 places, 340 transitions, 2379 flow. Second operand 12 states and 952 transitions. [2022-11-16 11:19:59,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 941 transitions, 8579 flow [2022-11-16 11:19:59,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 941 transitions, 8069 flow, removed 255 selfloop flow, removed 0 redundant places. [2022-11-16 11:19:59,899 INFO L231 Difference]: Finished difference. Result has 236 places, 354 transitions, 2326 flow [2022-11-16 11:19:59,899 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=2209, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2326, PETRI_PLACES=236, PETRI_TRANSITIONS=354} [2022-11-16 11:19:59,900 INFO L288 CegarLoopForPetriNet]: 122 programPoint places, 114 predicate places. [2022-11-16 11:19:59,900 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 354 transitions, 2326 flow [2022-11-16 11:19:59,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:19:59,901 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:19:59,901 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:19:59,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:20:00,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:20:00,107 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:20:00,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:20:00,108 INFO L85 PathProgramCache]: Analyzing trace with hash 329634111, now seen corresponding path program 2 times [2022-11-16 11:20:00,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:20:00,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428272034] [2022-11-16 11:20:00,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:20:00,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:20:00,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:01,127 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-16 11:20:01,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:20:01,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428272034] [2022-11-16 11:20:01,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428272034] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:20:01,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10418654] [2022-11-16 11:20:01,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:20:01,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:20:01,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:20:01,129 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:20:01,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:20:01,259 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:20:01,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:20:01,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 11:20:01,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:20:01,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:20:01,697 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-16 11:20:01,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:20:01,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10418654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:20:01,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:20:01,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2022-11-16 11:20:01,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569304426] [2022-11-16 11:20:01,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:20:01,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:20:01,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:20:01,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:20:01,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:20:01,701 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 125 [2022-11-16 11:20:01,702 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 354 transitions, 2326 flow. Second operand has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:01,702 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:20:01,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 125 [2022-11-16 11:20:01,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:20:08,251 INFO L130 PetriNetUnfolder]: 7772/20090 cut-off events. [2022-11-16 11:20:08,251 INFO L131 PetriNetUnfolder]: For 39994/40001 co-relation queries the response was YES. [2022-11-16 11:20:08,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65066 conditions, 20090 events. 7772/20090 cut-off events. For 39994/40001 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 178447 event pairs, 2083 based on Foata normal form. 17/19702 useless extension candidates. Maximal degree in co-relation 65018. Up to 6649 conditions per place. [2022-11-16 11:20:08,465 INFO L137 encePairwiseOnDemand]: 112/125 looper letters, 924 selfloop transitions, 21 changer transitions 0/1029 dead transitions. [2022-11-16 11:20:08,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 1029 transitions, 8663 flow [2022-11-16 11:20:08,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:20:08,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 11:20:08,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1014 transitions. [2022-11-16 11:20:08,470 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.676 [2022-11-16 11:20:08,470 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1014 transitions. [2022-11-16 11:20:08,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1014 transitions. [2022-11-16 11:20:08,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:20:08,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1014 transitions. [2022-11-16 11:20:08,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 84.5) internal successors, (1014), 12 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:08,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 125.0) internal successors, (1625), 13 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:08,487 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 125.0) internal successors, (1625), 13 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:08,496 INFO L175 Difference]: Start difference. First operand has 236 places, 354 transitions, 2326 flow. Second operand 12 states and 1014 transitions. [2022-11-16 11:20:08,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 1029 transitions, 8663 flow [2022-11-16 11:20:08,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 1029 transitions, 8648 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:20:08,675 INFO L231 Difference]: Finished difference. Result has 250 places, 366 transitions, 2466 flow [2022-11-16 11:20:08,675 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=2323, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2466, PETRI_PLACES=250, PETRI_TRANSITIONS=366} [2022-11-16 11:20:08,677 INFO L288 CegarLoopForPetriNet]: 122 programPoint places, 128 predicate places. [2022-11-16 11:20:08,677 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 366 transitions, 2466 flow [2022-11-16 11:20:08,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:08,678 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:20:08,679 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:20:08,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:20:08,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:20:08,886 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:20:08,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:20:08,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1489477637, now seen corresponding path program 1 times [2022-11-16 11:20:08,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:20:08,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136989726] [2022-11-16 11:20:08,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:20:08,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:20:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:09,788 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-16 11:20:09,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:20:09,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136989726] [2022-11-16 11:20:09,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136989726] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:20:09,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684341089] [2022-11-16 11:20:09,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:20:09,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:20:09,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:20:09,791 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:20:09,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 11:20:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:09,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 11:20:09,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:20:10,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:20:10,346 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-16 11:20:10,346 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:20:10,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684341089] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:20:10,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:20:10,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2022-11-16 11:20:10,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275634041] [2022-11-16 11:20:10,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:20:10,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:20:10,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:20:10,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:20:10,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:20:10,350 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 125 [2022-11-16 11:20:10,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 366 transitions, 2466 flow. Second operand has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:10,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:20:10,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 125 [2022-11-16 11:20:10,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:20:17,626 INFO L130 PetriNetUnfolder]: 9392/24339 cut-off events. [2022-11-16 11:20:17,626 INFO L131 PetriNetUnfolder]: For 55161/55173 co-relation queries the response was YES. [2022-11-16 11:20:17,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81147 conditions, 24339 events. 9392/24339 cut-off events. For 55161/55173 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 223404 event pairs, 2673 based on Foata normal form. 18/23828 useless extension candidates. Maximal degree in co-relation 81094. Up to 7548 conditions per place. [2022-11-16 11:20:17,899 INFO L137 encePairwiseOnDemand]: 111/125 looper letters, 1037 selfloop transitions, 29 changer transitions 0/1150 dead transitions. [2022-11-16 11:20:17,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 1150 transitions, 10273 flow [2022-11-16 11:20:17,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:20:17,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-16 11:20:17,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1142 transitions. [2022-11-16 11:20:17,909 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6525714285714286 [2022-11-16 11:20:17,910 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1142 transitions. [2022-11-16 11:20:17,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1142 transitions. [2022-11-16 11:20:17,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:20:17,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1142 transitions. [2022-11-16 11:20:17,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 81.57142857142857) internal successors, (1142), 14 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:17,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 125.0) internal successors, (1875), 15 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:17,920 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 125.0) internal successors, (1875), 15 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:17,920 INFO L175 Difference]: Start difference. First operand has 250 places, 366 transitions, 2466 flow. Second operand 14 states and 1142 transitions. [2022-11-16 11:20:17,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 1150 transitions, 10273 flow [2022-11-16 11:20:18,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 1150 transitions, 10185 flow, removed 9 selfloop flow, removed 5 redundant places. [2022-11-16 11:20:18,111 INFO L231 Difference]: Finished difference. Result has 267 places, 384 transitions, 2713 flow [2022-11-16 11:20:18,111 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=2445, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2713, PETRI_PLACES=267, PETRI_TRANSITIONS=384} [2022-11-16 11:20:18,113 INFO L288 CegarLoopForPetriNet]: 122 programPoint places, 145 predicate places. [2022-11-16 11:20:18,113 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 384 transitions, 2713 flow [2022-11-16 11:20:18,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:18,113 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:20:18,113 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:20:18,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 11:20:18,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:20:18,325 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:20:18,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:20:18,325 INFO L85 PathProgramCache]: Analyzing trace with hash -146236709, now seen corresponding path program 3 times [2022-11-16 11:20:18,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:20:18,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466223354] [2022-11-16 11:20:18,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:20:18,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:20:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:19,180 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-16 11:20:19,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:20:19,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466223354] [2022-11-16 11:20:19,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466223354] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:20:19,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062533918] [2022-11-16 11:20:19,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:20:19,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:20:19,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:20:19,184 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:20:19,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 11:20:19,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-16 11:20:19,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:20:19,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 11:20:19,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:20:19,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:20:19,712 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-16 11:20:19,713 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:20:19,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062533918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:20:19,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:20:19,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2022-11-16 11:20:19,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351462627] [2022-11-16 11:20:19,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:20:19,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:20:19,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:20:19,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:20:19,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:20:19,719 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 125 [2022-11-16 11:20:19,720 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 384 transitions, 2713 flow. Second operand has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:19,720 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:20:19,720 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 125 [2022-11-16 11:20:19,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:20:26,916 INFO L130 PetriNetUnfolder]: 10329/26616 cut-off events. [2022-11-16 11:20:26,916 INFO L131 PetriNetUnfolder]: For 69010/69043 co-relation queries the response was YES. [2022-11-16 11:20:27,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91974 conditions, 26616 events. 10329/26616 cut-off events. For 69010/69043 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 248355 event pairs, 3195 based on Foata normal form. 25/26102 useless extension candidates. Maximal degree in co-relation 91912. Up to 9945 conditions per place. [2022-11-16 11:20:27,405 INFO L137 encePairwiseOnDemand]: 111/125 looper letters, 1002 selfloop transitions, 38 changer transitions 0/1124 dead transitions. [2022-11-16 11:20:27,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 1124 transitions, 10114 flow [2022-11-16 11:20:27,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:20:27,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-16 11:20:27,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1177 transitions. [2022-11-16 11:20:27,413 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6725714285714286 [2022-11-16 11:20:27,413 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1177 transitions. [2022-11-16 11:20:27,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1177 transitions. [2022-11-16 11:20:27,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:20:27,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1177 transitions. [2022-11-16 11:20:27,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 84.07142857142857) internal successors, (1177), 14 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:27,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 125.0) internal successors, (1875), 15 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:27,420 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 125.0) internal successors, (1875), 15 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:27,421 INFO L175 Difference]: Start difference. First operand has 267 places, 384 transitions, 2713 flow. Second operand 14 states and 1177 transitions. [2022-11-16 11:20:27,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 1124 transitions, 10114 flow [2022-11-16 11:20:27,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 1124 transitions, 10001 flow, removed 7 selfloop flow, removed 6 redundant places. [2022-11-16 11:20:27,667 INFO L231 Difference]: Finished difference. Result has 283 places, 402 transitions, 2996 flow [2022-11-16 11:20:27,668 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=2681, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2996, PETRI_PLACES=283, PETRI_TRANSITIONS=402} [2022-11-16 11:20:27,668 INFO L288 CegarLoopForPetriNet]: 122 programPoint places, 161 predicate places. [2022-11-16 11:20:27,668 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 402 transitions, 2996 flow [2022-11-16 11:20:27,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:27,669 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:20:27,669 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:20:27,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-11-16 11:20:27,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:20:27,880 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:20:27,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:20:27,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1801468631, now seen corresponding path program 2 times [2022-11-16 11:20:27,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:20:27,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694938392] [2022-11-16 11:20:27,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:20:27,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:20:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:28,700 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-16 11:20:28,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:20:28,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694938392] [2022-11-16 11:20:28,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694938392] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:20:28,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320831813] [2022-11-16 11:20:28,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:20:28,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:20:28,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:20:28,704 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:20:28,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 11:20:28,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:20:28,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:20:28,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 11:20:28,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:20:29,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:20:29,233 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-16 11:20:29,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:20:29,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320831813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:20:29,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:20:29,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2022-11-16 11:20:29,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762246226] [2022-11-16 11:20:29,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:20:29,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:20:29,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:20:29,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:20:29,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:20:29,237 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 125 [2022-11-16 11:20:29,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 402 transitions, 2996 flow. Second operand has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:29,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:20:29,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 125 [2022-11-16 11:20:29,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:20:39,126 INFO L130 PetriNetUnfolder]: 11983/31018 cut-off events. [2022-11-16 11:20:39,126 INFO L131 PetriNetUnfolder]: For 96504/96556 co-relation queries the response was YES. [2022-11-16 11:20:39,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109792 conditions, 31018 events. 11983/31018 cut-off events. For 96504/96556 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 299065 event pairs, 3376 based on Foata normal form. 33/30389 useless extension candidates. Maximal degree in co-relation 109721. Up to 7860 conditions per place. [2022-11-16 11:20:39,820 INFO L137 encePairwiseOnDemand]: 111/125 looper letters, 1246 selfloop transitions, 41 changer transitions 0/1371 dead transitions. [2022-11-16 11:20:39,820 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 1371 transitions, 12965 flow [2022-11-16 11:20:39,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:20:39,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-16 11:20:39,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1173 transitions. [2022-11-16 11:20:39,825 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6702857142857143 [2022-11-16 11:20:39,825 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1173 transitions. [2022-11-16 11:20:39,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1173 transitions. [2022-11-16 11:20:39,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:20:39,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1173 transitions. [2022-11-16 11:20:39,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 83.78571428571429) internal successors, (1173), 14 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:39,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 125.0) internal successors, (1875), 15 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:39,836 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 125.0) internal successors, (1875), 15 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:39,836 INFO L175 Difference]: Start difference. First operand has 283 places, 402 transitions, 2996 flow. Second operand 14 states and 1173 transitions. [2022-11-16 11:20:39,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 1371 transitions, 12965 flow [2022-11-16 11:20:40,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 1371 transitions, 12841 flow, removed 16 selfloop flow, removed 6 redundant places. [2022-11-16 11:20:40,165 INFO L231 Difference]: Finished difference. Result has 297 places, 423 transitions, 3390 flow [2022-11-16 11:20:40,165 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=2939, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3390, PETRI_PLACES=297, PETRI_TRANSITIONS=423} [2022-11-16 11:20:40,166 INFO L288 CegarLoopForPetriNet]: 122 programPoint places, 175 predicate places. [2022-11-16 11:20:40,166 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 423 transitions, 3390 flow [2022-11-16 11:20:40,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:40,166 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:20:40,167 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:20:40,174 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-16 11:20:40,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 11:20:40,372 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:20:40,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:20:40,373 INFO L85 PathProgramCache]: Analyzing trace with hash 282348595, now seen corresponding path program 4 times [2022-11-16 11:20:40,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:20:40,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173272696] [2022-11-16 11:20:40,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:20:40,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:20:40,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:20:41,140 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-16 11:20:41,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:20:41,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173272696] [2022-11-16 11:20:41,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173272696] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:20:41,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531500900] [2022-11-16 11:20:41,142 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:20:41,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:20:41,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:20:41,144 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:20:41,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a674516b-5ed1-4870-a0ae-3ca23a40da8b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 11:20:41,454 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:20:41,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:20:41,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 11:20:41,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:20:41,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:20:41,838 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-16 11:20:41,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:20:41,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531500900] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:20:41,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:20:41,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2022-11-16 11:20:41,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116875244] [2022-11-16 11:20:41,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:20:41,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:20:41,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:20:41,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:20:41,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:20:41,841 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 125 [2022-11-16 11:20:41,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 423 transitions, 3390 flow. Second operand has 10 states, 10 states have (on average 56.3) internal successors, (563), 10 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:20:41,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:20:41,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 125 [2022-11-16 11:20:41,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand