./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:33:37,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:33:37,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:33:37,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:33:37,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:33:37,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:33:37,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:33:37,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:33:37,252 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:33:37,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:33:37,259 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:33:37,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:33:37,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:33:37,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:33:37,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:33:37,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:33:37,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:33:37,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:33:37,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:33:37,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:33:37,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:33:37,283 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:33:37,284 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:33:37,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:33:37,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:33:37,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:33:37,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:33:37,297 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:33:37,297 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:33:37,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:33:37,301 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:33:37,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:33:37,304 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:33:37,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:33:37,307 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:33:37,307 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:33:37,308 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:33:37,308 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:33:37,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:33:37,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:33:37,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:33:37,310 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-18 19:33:37,345 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:33:37,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:33:37,348 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:33:37,349 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:33:37,350 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:33:37,350 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:33:37,351 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:33:37,351 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:33:37,351 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:33:37,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:33:37,352 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:33:37,353 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:33:37,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:33:37,353 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:33:37,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:33:37,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:33:37,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:33:37,354 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:33:37,354 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-18 19:33:37,354 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:33:37,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:33:37,355 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:33:37,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:33:37,355 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:33:37,355 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:33:37,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:33:37,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:33:37,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:33:37,358 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:33:37,358 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:33:37,358 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:33:37,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:33:37,359 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:33:37,359 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:33:37,359 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:33:37,359 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_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 [2022-11-18 19:33:37,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:33:37,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:33:37,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:33:37,709 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:33:37,710 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:33:37,711 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2022-11-18 19:33:37,793 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/data/5e4cf0ac4/184c2073d403422b862eaf3bc81579d3/FLAGc63d6324f [2022-11-18 19:33:38,522 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:33:38,523 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2022-11-18 19:33:38,540 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/data/5e4cf0ac4/184c2073d403422b862eaf3bc81579d3/FLAGc63d6324f [2022-11-18 19:33:38,739 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/data/5e4cf0ac4/184c2073d403422b862eaf3bc81579d3 [2022-11-18 19:33:38,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:33:38,751 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:33:38,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:33:38,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:33:38,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:33:38,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:33:38" (1/1) ... [2022-11-18 19:33:38,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aeee2da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:38, skipping insertion in model container [2022-11-18 19:33:38,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:33:38" (1/1) ... [2022-11-18 19:33:38,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:33:38,816 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:33:39,424 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i[47038,47051] [2022-11-18 19:33:39,451 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 19:33:39,453 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 19:33:39,454 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 19:33:39,455 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 19:33:39,505 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:33:39,538 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:33:39,596 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i[47038,47051] [2022-11-18 19:33:39,601 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 19:33:39,601 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 19:33:39,602 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 19:33:39,603 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 19:33:39,639 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:33:39,692 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:33:39,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:39 WrapperNode [2022-11-18 19:33:39,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:33:39,693 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:33:39,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:33:39,694 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:33:39,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:39" (1/1) ... [2022-11-18 19:33:39,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:39" (1/1) ... [2022-11-18 19:33:39,797 INFO L138 Inliner]: procedures = 279, calls = 51, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 345 [2022-11-18 19:33:39,800 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:33:39,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:33:39,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:33:39,802 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:33:39,813 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:39" (1/1) ... [2022-11-18 19:33:39,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:39" (1/1) ... [2022-11-18 19:33:39,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:39" (1/1) ... [2022-11-18 19:33:39,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:39" (1/1) ... [2022-11-18 19:33:39,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:39" (1/1) ... [2022-11-18 19:33:39,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:39" (1/1) ... [2022-11-18 19:33:39,890 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:39" (1/1) ... [2022-11-18 19:33:39,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:39" (1/1) ... [2022-11-18 19:33:39,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:33:39,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:33:39,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:33:39,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:33:39,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:39" (1/1) ... [2022-11-18 19:33:39,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:33:39,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:39,933 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:33:39,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:33:39,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:33:39,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 19:33:39,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:33:39,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:33:39,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:33:39,990 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 19:33:39,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:33:39,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:33:39,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 19:33:39,991 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-18 19:33:39,991 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-18 19:33:39,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:33:39,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:33:39,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:33:39,993 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:33:40,177 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:33:40,179 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:33:40,984 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:33:40,996 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:33:40,997 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-18 19:33:40,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:33:40 BoogieIcfgContainer [2022-11-18 19:33:41,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:33:41,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:33:41,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:33:41,010 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:33:41,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:33:38" (1/3) ... [2022-11-18 19:33:41,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3faa2d0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:33:41, skipping insertion in model container [2022-11-18 19:33:41,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:39" (2/3) ... [2022-11-18 19:33:41,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3faa2d0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:33:41, skipping insertion in model container [2022-11-18 19:33:41,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:33:40" (3/3) ... [2022-11-18 19:33:41,017 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_93-evilcollapse_racefree.i [2022-11-18 19:33:41,027 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:33:41,039 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:33:41,039 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-11-18 19:33:41,039 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:33:41,166 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-18 19:33:41,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 373 places, 397 transitions, 802 flow [2022-11-18 19:33:41,343 INFO L130 PetriNetUnfolder]: 29/420 cut-off events. [2022-11-18 19:33:41,343 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-18 19:33:41,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 426 conditions, 420 events. 29/420 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1048 event pairs, 0 based on Foata normal form. 0/367 useless extension candidates. Maximal degree in co-relation 251. Up to 4 conditions per place. [2022-11-18 19:33:41,355 INFO L82 GeneralOperation]: Start removeDead. Operand has 373 places, 397 transitions, 802 flow [2022-11-18 19:33:41,364 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 373 places, 397 transitions, 802 flow [2022-11-18 19:33:41,375 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:33:41,407 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;@3dfb8080, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:33:41,407 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2022-11-18 19:33:41,419 INFO L130 PetriNetUnfolder]: 1/64 cut-off events. [2022-11-18 19:33:41,420 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:33:41,420 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:41,421 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:41,422 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-18 19:33:41,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:41,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1358136975, now seen corresponding path program 1 times [2022-11-18 19:33:41,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:41,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044988583] [2022-11-18 19:33:41,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:41,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:42,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:42,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:42,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044988583] [2022-11-18 19:33:42,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044988583] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:42,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:42,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:33:42,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709890895] [2022-11-18 19:33:42,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:42,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:33:42,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:42,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:33:42,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:33:42,528 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 397 [2022-11-18 19:33:42,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 397 transitions, 802 flow. Second operand has 6 states, 6 states have (on average 243.5) internal successors, (1461), 6 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:42,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:42,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 397 [2022-11-18 19:33:42,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:43,280 INFO L130 PetriNetUnfolder]: 278/1284 cut-off events. [2022-11-18 19:33:43,280 INFO L131 PetriNetUnfolder]: For 14/27 co-relation queries the response was YES. [2022-11-18 19:33:43,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1941 conditions, 1284 events. 278/1284 cut-off events. For 14/27 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 6998 event pairs, 252 based on Foata normal form. 191/1328 useless extension candidates. Maximal degree in co-relation 1591. Up to 640 conditions per place. [2022-11-18 19:33:43,298 INFO L137 encePairwiseOnDemand]: 365/397 looper letters, 122 selfloop transitions, 10 changer transitions 2/374 dead transitions. [2022-11-18 19:33:43,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 374 transitions, 1020 flow [2022-11-18 19:33:43,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:33:43,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:33:43,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1606 transitions. [2022-11-18 19:33:43,326 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6742233417296389 [2022-11-18 19:33:43,327 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1606 transitions. [2022-11-18 19:33:43,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1606 transitions. [2022-11-18 19:33:43,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:43,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1606 transitions. [2022-11-18 19:33:43,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 267.6666666666667) internal successors, (1606), 6 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:43,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 397.0) internal successors, (2779), 7 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:43,362 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 397.0) internal successors, (2779), 7 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:43,364 INFO L175 Difference]: Start difference. First operand has 373 places, 397 transitions, 802 flow. Second operand 6 states and 1606 transitions. [2022-11-18 19:33:43,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 374 transitions, 1020 flow [2022-11-18 19:33:43,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 374 transitions, 1020 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:33:43,391 INFO L231 Difference]: Finished difference. Result has 375 places, 372 transitions, 772 flow [2022-11-18 19:33:43,394 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=772, PETRI_PLACES=375, PETRI_TRANSITIONS=372} [2022-11-18 19:33:43,398 INFO L288 CegarLoopForPetriNet]: 373 programPoint places, 2 predicate places. [2022-11-18 19:33:43,399 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 372 transitions, 772 flow [2022-11-18 19:33:43,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 243.5) internal successors, (1461), 6 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:43,401 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:43,401 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:43,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:33:43,403 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-18 19:33:43,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:43,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1039641367, now seen corresponding path program 1 times [2022-11-18 19:33:43,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:43,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335087590] [2022-11-18 19:33:43,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:43,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:43,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:43,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:43,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:43,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335087590] [2022-11-18 19:33:43,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335087590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:43,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:43,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:33:43,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099393550] [2022-11-18 19:33:43,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:43,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:33:43,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:43,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:33:43,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:33:44,002 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 397 [2022-11-18 19:33:44,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 372 transitions, 772 flow. Second operand has 6 states, 6 states have (on average 244.5) internal successors, (1467), 6 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:44,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:44,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 397 [2022-11-18 19:33:44,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:44,572 INFO L130 PetriNetUnfolder]: 278/1280 cut-off events. [2022-11-18 19:33:44,573 INFO L131 PetriNetUnfolder]: For 16/29 co-relation queries the response was YES. [2022-11-18 19:33:44,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1946 conditions, 1280 events. 278/1280 cut-off events. For 16/29 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 6997 event pairs, 252 based on Foata normal form. 0/1137 useless extension candidates. Maximal degree in co-relation 1749. Up to 638 conditions per place. [2022-11-18 19:33:44,580 INFO L137 encePairwiseOnDemand]: 385/397 looper letters, 120 selfloop transitions, 10 changer transitions 0/370 dead transitions. [2022-11-18 19:33:44,580 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 370 transitions, 1028 flow [2022-11-18 19:33:44,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:33:44,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:33:44,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1584 transitions. [2022-11-18 19:33:44,586 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6649874055415617 [2022-11-18 19:33:44,586 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1584 transitions. [2022-11-18 19:33:44,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1584 transitions. [2022-11-18 19:33:44,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:44,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1584 transitions. [2022-11-18 19:33:44,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 264.0) internal successors, (1584), 6 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:44,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 397.0) internal successors, (2779), 7 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:44,600 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 397.0) internal successors, (2779), 7 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:44,600 INFO L175 Difference]: Start difference. First operand has 375 places, 372 transitions, 772 flow. Second operand 6 states and 1584 transitions. [2022-11-18 19:33:44,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 370 transitions, 1028 flow [2022-11-18 19:33:44,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 370 transitions, 1008 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:33:44,613 INFO L231 Difference]: Finished difference. Result has 371 places, 370 transitions, 768 flow [2022-11-18 19:33:44,614 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=768, PETRI_PLACES=371, PETRI_TRANSITIONS=370} [2022-11-18 19:33:44,615 INFO L288 CegarLoopForPetriNet]: 373 programPoint places, -2 predicate places. [2022-11-18 19:33:44,615 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 370 transitions, 768 flow [2022-11-18 19:33:44,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 244.5) internal successors, (1467), 6 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:44,617 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:44,617 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:44,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:33:44,617 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-18 19:33:44,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:44,619 INFO L85 PathProgramCache]: Analyzing trace with hash 229261010, now seen corresponding path program 1 times [2022-11-18 19:33:44,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:44,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507106459] [2022-11-18 19:33:44,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:44,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:44,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:44,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:44,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:44,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507106459] [2022-11-18 19:33:44,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507106459] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:44,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:44,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:33:44,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453972661] [2022-11-18 19:33:44,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:44,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:33:44,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:44,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:33:44,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:33:44,717 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 364 out of 397 [2022-11-18 19:33:44,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 370 transitions, 768 flow. Second operand has 3 states, 3 states have (on average 365.0) internal successors, (1095), 3 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:44,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:44,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 364 of 397 [2022-11-18 19:33:44,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:44,838 INFO L130 PetriNetUnfolder]: 8/515 cut-off events. [2022-11-18 19:33:44,839 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-18 19:33:44,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 562 conditions, 515 events. 8/515 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1434 event pairs, 0 based on Foata normal form. 0/479 useless extension candidates. Maximal degree in co-relation 400. Up to 13 conditions per place. [2022-11-18 19:33:44,842 INFO L137 encePairwiseOnDemand]: 394/397 looper letters, 17 selfloop transitions, 2 changer transitions 0/377 dead transitions. [2022-11-18 19:33:44,842 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 377 transitions, 820 flow [2022-11-18 19:33:44,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:33:44,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:33:44,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1112 transitions. [2022-11-18 19:33:44,846 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9336691855583543 [2022-11-18 19:33:44,846 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1112 transitions. [2022-11-18 19:33:44,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1112 transitions. [2022-11-18 19:33:44,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:44,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1112 transitions. [2022-11-18 19:33:44,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 370.6666666666667) internal successors, (1112), 3 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:44,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 397.0) internal successors, (1588), 4 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:44,855 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 397.0) internal successors, (1588), 4 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:44,855 INFO L175 Difference]: Start difference. First operand has 371 places, 370 transitions, 768 flow. Second operand 3 states and 1112 transitions. [2022-11-18 19:33:44,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 377 transitions, 820 flow [2022-11-18 19:33:44,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 377 transitions, 800 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:33:44,867 INFO L231 Difference]: Finished difference. Result has 369 places, 371 transitions, 760 flow [2022-11-18 19:33:44,868 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=760, PETRI_PLACES=369, PETRI_TRANSITIONS=371} [2022-11-18 19:33:44,870 INFO L288 CegarLoopForPetriNet]: 373 programPoint places, -4 predicate places. [2022-11-18 19:33:44,871 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 371 transitions, 760 flow [2022-11-18 19:33:44,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 365.0) internal successors, (1095), 3 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:44,872 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:44,872 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:44,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:33:44,874 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-18 19:33:44,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:44,875 INFO L85 PathProgramCache]: Analyzing trace with hash 741890038, now seen corresponding path program 1 times [2022-11-18 19:33:44,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:44,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031824571] [2022-11-18 19:33:44,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:44,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:44,928 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:33:44,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [697230364] [2022-11-18 19:33:44,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:44,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:44,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:44,935 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:44,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:33:45,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:45,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 19:33:45,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:45,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:33:45,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:45,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:33:45,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:45,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:45,311 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:33:45,312 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 [2022-11-18 19:33:45,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:45,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:45,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:45,375 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:33:45,376 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 [2022-11-18 19:33:45,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:45,421 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:33:45,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:45,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031824571] [2022-11-18 19:33:45,423 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:33:45,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697230364] [2022-11-18 19:33:45,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697230364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:45,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:45,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:33:45,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808324358] [2022-11-18 19:33:45,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:45,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:33:45,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:45,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:33:45,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:33:45,432 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 397 [2022-11-18 19:33:45,436 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 371 transitions, 760 flow. Second operand has 8 states, 8 states have (on average 247.625) internal successors, (1981), 8 states have internal predecessors, (1981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:45,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:45,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 397 [2022-11-18 19:33:45,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:46,832 INFO L130 PetriNetUnfolder]: 557/2568 cut-off events. [2022-11-18 19:33:46,832 INFO L131 PetriNetUnfolder]: For 29/55 co-relation queries the response was YES. [2022-11-18 19:33:46,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3890 conditions, 2568 events. 557/2568 cut-off events. For 29/55 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 14740 event pairs, 504 based on Foata normal form. 0/2284 useless extension candidates. Maximal degree in co-relation 1909. Up to 681 conditions per place. [2022-11-18 19:33:46,847 INFO L137 encePairwiseOnDemand]: 387/397 looper letters, 190 selfloop transitions, 9 changer transitions 0/443 dead transitions. [2022-11-18 19:33:46,848 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 443 transitions, 1308 flow [2022-11-18 19:33:46,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:33:46,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:33:46,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2405 transitions. [2022-11-18 19:33:46,854 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6731038343129023 [2022-11-18 19:33:46,854 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2405 transitions. [2022-11-18 19:33:46,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2405 transitions. [2022-11-18 19:33:46,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:46,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2405 transitions. [2022-11-18 19:33:46,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 267.22222222222223) internal successors, (2405), 9 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:46,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 397.0) internal successors, (3970), 10 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:46,876 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 397.0) internal successors, (3970), 10 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:46,876 INFO L175 Difference]: Start difference. First operand has 369 places, 371 transitions, 760 flow. Second operand 9 states and 2405 transitions. [2022-11-18 19:33:46,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 443 transitions, 1308 flow [2022-11-18 19:33:46,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 443 transitions, 1306 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:33:46,886 INFO L231 Difference]: Finished difference. Result has 376 places, 371 transitions, 782 flow [2022-11-18 19:33:46,888 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=782, PETRI_PLACES=376, PETRI_TRANSITIONS=371} [2022-11-18 19:33:46,890 INFO L288 CegarLoopForPetriNet]: 373 programPoint places, 3 predicate places. [2022-11-18 19:33:46,891 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 371 transitions, 782 flow [2022-11-18 19:33:46,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 247.625) internal successors, (1981), 8 states have internal predecessors, (1981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:46,892 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:46,893 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:46,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:33:47,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:47,100 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-18 19:33:47,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:47,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1683868573, now seen corresponding path program 1 times [2022-11-18 19:33:47,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:47,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091723132] [2022-11-18 19:33:47,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:47,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:47,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:47,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:47,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:47,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091723132] [2022-11-18 19:33:47,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091723132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:47,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:47,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:33:47,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206832060] [2022-11-18 19:33:47,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:47,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:33:47,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:47,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:33:47,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:33:47,212 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 367 out of 397 [2022-11-18 19:33:47,214 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 371 transitions, 782 flow. Second operand has 3 states, 3 states have (on average 368.0) internal successors, (1104), 3 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:47,214 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:47,214 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 367 of 397 [2022-11-18 19:33:47,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:47,374 INFO L130 PetriNetUnfolder]: 8/703 cut-off events. [2022-11-18 19:33:47,427 INFO L131 PetriNetUnfolder]: For 10/11 co-relation queries the response was YES. [2022-11-18 19:33:47,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 783 conditions, 703 events. 8/703 cut-off events. For 10/11 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1416 event pairs, 0 based on Foata normal form. 0/660 useless extension candidates. Maximal degree in co-relation 619. Up to 16 conditions per place. [2022-11-18 19:33:47,430 INFO L137 encePairwiseOnDemand]: 394/397 looper letters, 11 selfloop transitions, 2 changer transitions 0/375 dead transitions. [2022-11-18 19:33:47,430 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 375 transitions, 816 flow [2022-11-18 19:33:47,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:33:47,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:33:47,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1115 transitions. [2022-11-18 19:33:47,435 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9361880772460117 [2022-11-18 19:33:47,435 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1115 transitions. [2022-11-18 19:33:47,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1115 transitions. [2022-11-18 19:33:47,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:47,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1115 transitions. [2022-11-18 19:33:47,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 371.6666666666667) internal successors, (1115), 3 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:47,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 397.0) internal successors, (1588), 4 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:47,443 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 397.0) internal successors, (1588), 4 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:47,443 INFO L175 Difference]: Start difference. First operand has 376 places, 371 transitions, 782 flow. Second operand 3 states and 1115 transitions. [2022-11-18 19:33:47,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 375 transitions, 816 flow [2022-11-18 19:33:47,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 375 transitions, 802 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-18 19:33:47,460 INFO L231 Difference]: Finished difference. Result has 372 places, 372 transitions, 780 flow [2022-11-18 19:33:47,461 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=780, PETRI_PLACES=372, PETRI_TRANSITIONS=372} [2022-11-18 19:33:47,464 INFO L288 CegarLoopForPetriNet]: 373 programPoint places, -1 predicate places. [2022-11-18 19:33:47,465 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 372 transitions, 780 flow [2022-11-18 19:33:47,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 368.0) internal successors, (1104), 3 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:47,466 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:47,466 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:47,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:33:47,466 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-18 19:33:47,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:47,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1566635370, now seen corresponding path program 1 times [2022-11-18 19:33:47,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:47,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257880448] [2022-11-18 19:33:47,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:47,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:47,515 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:33:47,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1442791444] [2022-11-18 19:33:47,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:47,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:47,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:47,518 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:47,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:33:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:47,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 19:33:47,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:48,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:33:48,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:48,204 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 [2022-11-18 19:33:48,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:48,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:48,244 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:33:48,245 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 [2022-11-18 19:33:48,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:48,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:48,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:33:48,305 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:33:48,305 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 [2022-11-18 19:33:48,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:48,353 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:33:48,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:48,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257880448] [2022-11-18 19:33:48,353 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:33:48,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442791444] [2022-11-18 19:33:48,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442791444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:48,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:48,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 19:33:48,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901265008] [2022-11-18 19:33:48,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:48,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:33:48,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:48,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:33:48,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:33:48,359 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 397 [2022-11-18 19:33:48,362 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 372 transitions, 780 flow. Second operand has 10 states, 10 states have (on average 235.1) internal successors, (2351), 10 states have internal predecessors, (2351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:48,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:48,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 397 [2022-11-18 19:33:48,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:49,926 INFO L130 PetriNetUnfolder]: 615/2832 cut-off events. [2022-11-18 19:33:49,926 INFO L131 PetriNetUnfolder]: For 39/65 co-relation queries the response was YES. [2022-11-18 19:33:49,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4449 conditions, 2832 events. 615/2832 cut-off events. For 39/65 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 15039 event pairs, 564 based on Foata normal form. 0/2534 useless extension candidates. Maximal degree in co-relation 1999. Up to 769 conditions per place. [2022-11-18 19:33:49,940 INFO L137 encePairwiseOnDemand]: 385/397 looper letters, 312 selfloop transitions, 13 changer transitions 0/556 dead transitions. [2022-11-18 19:33:49,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 556 transitions, 1812 flow [2022-11-18 19:33:49,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:33:49,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 19:33:49,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3098 transitions. [2022-11-18 19:33:49,948 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6502938706968934 [2022-11-18 19:33:49,949 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3098 transitions. [2022-11-18 19:33:49,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3098 transitions. [2022-11-18 19:33:49,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:49,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3098 transitions. [2022-11-18 19:33:49,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 258.1666666666667) internal successors, (3098), 12 states have internal predecessors, (3098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:49,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 397.0) internal successors, (5161), 13 states have internal predecessors, (5161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:49,971 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 397.0) internal successors, (5161), 13 states have internal predecessors, (5161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:49,971 INFO L175 Difference]: Start difference. First operand has 372 places, 372 transitions, 780 flow. Second operand 12 states and 3098 transitions. [2022-11-18 19:33:49,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 556 transitions, 1812 flow [2022-11-18 19:33:49,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 556 transitions, 1810 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:33:49,985 INFO L231 Difference]: Finished difference. Result has 391 places, 382 transitions, 868 flow [2022-11-18 19:33:49,986 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=868, PETRI_PLACES=391, PETRI_TRANSITIONS=382} [2022-11-18 19:33:49,989 INFO L288 CegarLoopForPetriNet]: 373 programPoint places, 18 predicate places. [2022-11-18 19:33:49,989 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 382 transitions, 868 flow [2022-11-18 19:33:49,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 235.1) internal successors, (2351), 10 states have internal predecessors, (2351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:49,991 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:49,991 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:50,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:33:50,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 19:33:50,199 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-18 19:33:50,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:50,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1895121972, now seen corresponding path program 1 times [2022-11-18 19:33:50,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:50,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548797119] [2022-11-18 19:33:50,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:50,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:50,235 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:33:50,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1735265153] [2022-11-18 19:33:50,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:50,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:50,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:50,237 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:50,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:33:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:50,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 19:33:50,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:50,481 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 [2022-11-18 19:33:50,497 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 23 treesize of output 22 [2022-11-18 19:33:50,524 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:33:50,524 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 32 treesize of output 34 [2022-11-18 19:33:50,560 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:33:50,561 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 41 treesize of output 46 [2022-11-18 19:33:50,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:50,588 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:33:50,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:50,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548797119] [2022-11-18 19:33:50,589 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:33:50,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735265153] [2022-11-18 19:33:50,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735265153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:50,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:50,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:33:50,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938598934] [2022-11-18 19:33:50,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:50,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:33:50,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:50,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:33:50,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:33:50,593 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 397 [2022-11-18 19:33:50,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 382 transitions, 868 flow. Second operand has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:50,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:50,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 397 [2022-11-18 19:33:50,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:51,919 INFO L130 PetriNetUnfolder]: 555/2780 cut-off events. [2022-11-18 19:33:51,920 INFO L131 PetriNetUnfolder]: For 68/94 co-relation queries the response was YES. [2022-11-18 19:33:51,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4304 conditions, 2780 events. 555/2780 cut-off events. For 68/94 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 14825 event pairs, 504 based on Foata normal form. 0/2498 useless extension candidates. Maximal degree in co-relation 3948. Up to 1383 conditions per place. [2022-11-18 19:33:51,942 INFO L137 encePairwiseOnDemand]: 391/397 looper letters, 123 selfloop transitions, 6 changer transitions 0/381 dead transitions. [2022-11-18 19:33:51,943 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 381 transitions, 1124 flow [2022-11-18 19:33:51,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:33:51,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:33:51,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1611 transitions. [2022-11-18 19:33:51,949 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6763224181360201 [2022-11-18 19:33:51,949 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1611 transitions. [2022-11-18 19:33:51,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1611 transitions. [2022-11-18 19:33:51,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:51,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1611 transitions. [2022-11-18 19:33:51,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 268.5) internal successors, (1611), 6 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:51,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 397.0) internal successors, (2779), 7 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:51,964 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 397.0) internal successors, (2779), 7 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:51,965 INFO L175 Difference]: Start difference. First operand has 391 places, 382 transitions, 868 flow. Second operand 6 states and 1611 transitions. [2022-11-18 19:33:51,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 381 transitions, 1124 flow [2022-11-18 19:33:51,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 381 transitions, 1118 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:33:51,978 INFO L231 Difference]: Finished difference. Result has 392 places, 381 transitions, 872 flow [2022-11-18 19:33:51,979 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=860, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=872, PETRI_PLACES=392, PETRI_TRANSITIONS=381} [2022-11-18 19:33:51,980 INFO L288 CegarLoopForPetriNet]: 373 programPoint places, 19 predicate places. [2022-11-18 19:33:51,980 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 381 transitions, 872 flow [2022-11-18 19:33:51,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:51,982 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:51,982 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:51,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-18 19:33:52,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 19:33:52,187 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-18 19:33:52,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:52,188 INFO L85 PathProgramCache]: Analyzing trace with hash 965358239, now seen corresponding path program 1 times [2022-11-18 19:33:52,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:52,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266764244] [2022-11-18 19:33:52,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:52,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:52,229 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:33:52,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1170212804] [2022-11-18 19:33:52,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:52,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:52,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:52,232 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:52,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:33:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:52,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 19:33:52,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:52,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:33:52,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:33:52,636 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:33:52,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-18 19:33:52,674 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:33:52,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-18 19:33:52,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:52,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:33:52,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:52,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266764244] [2022-11-18 19:33:52,705 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:33:52,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170212804] [2022-11-18 19:33:52,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170212804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:52,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:52,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:33:52,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877630686] [2022-11-18 19:33:52,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:52,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:33:52,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:52,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:33:52,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:33:52,710 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 397 [2022-11-18 19:33:52,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 381 transitions, 872 flow. Second operand has 6 states, 6 states have (on average 253.5) internal successors, (1521), 6 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:52,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:52,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 397 [2022-11-18 19:33:52,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:53,848 INFO L130 PetriNetUnfolder]: 555/2776 cut-off events. [2022-11-18 19:33:53,849 INFO L131 PetriNetUnfolder]: For 80/106 co-relation queries the response was YES. [2022-11-18 19:33:53,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4321 conditions, 2776 events. 555/2776 cut-off events. For 80/106 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 14821 event pairs, 504 based on Foata normal form. 0/2498 useless extension candidates. Maximal degree in co-relation 3957. Up to 1387 conditions per place. [2022-11-18 19:33:53,867 INFO L137 encePairwiseOnDemand]: 391/397 looper letters, 125 selfloop transitions, 5 changer transitions 0/380 dead transitions. [2022-11-18 19:33:53,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 380 transitions, 1130 flow [2022-11-18 19:33:53,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:33:53,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:33:53,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1600 transitions. [2022-11-18 19:33:53,873 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6717044500419815 [2022-11-18 19:33:53,873 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1600 transitions. [2022-11-18 19:33:53,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1600 transitions. [2022-11-18 19:33:53,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:53,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1600 transitions. [2022-11-18 19:33:53,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 266.6666666666667) internal successors, (1600), 6 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:53,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 397.0) internal successors, (2779), 7 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:53,885 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 397.0) internal successors, (2779), 7 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:53,885 INFO L175 Difference]: Start difference. First operand has 392 places, 381 transitions, 872 flow. Second operand 6 states and 1600 transitions. [2022-11-18 19:33:53,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 380 transitions, 1130 flow [2022-11-18 19:33:53,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 380 transitions, 1118 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:33:53,896 INFO L231 Difference]: Finished difference. Result has 391 places, 380 transitions, 868 flow [2022-11-18 19:33:53,897 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=868, PETRI_PLACES=391, PETRI_TRANSITIONS=380} [2022-11-18 19:33:53,899 INFO L288 CegarLoopForPetriNet]: 373 programPoint places, 18 predicate places. [2022-11-18 19:33:53,899 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 380 transitions, 868 flow [2022-11-18 19:33:53,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 253.5) internal successors, (1521), 6 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:53,900 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:53,900 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:53,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:33:54,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:54,109 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-18 19:33:54,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:54,109 INFO L85 PathProgramCache]: Analyzing trace with hash -636670473, now seen corresponding path program 1 times [2022-11-18 19:33:54,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:54,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315370018] [2022-11-18 19:33:54,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:54,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:54,141 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:33:54,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1545473613] [2022-11-18 19:33:54,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:54,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:54,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:54,143 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:54,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:33:54,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:54,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 19:33:54,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:54,432 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 [2022-11-18 19:33:54,454 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 23 treesize of output 22 [2022-11-18 19:33:54,472 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:33:54,473 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 32 treesize of output 34 [2022-11-18 19:33:54,503 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:33:54,507 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 41 treesize of output 46 [2022-11-18 19:33:54,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:54,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:33:54,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:54,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315370018] [2022-11-18 19:33:54,533 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:33:54,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545473613] [2022-11-18 19:33:54,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545473613] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:54,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:54,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:33:54,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812933527] [2022-11-18 19:33:54,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:54,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:33:54,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:54,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:33:54,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:33:54,539 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 397 [2022-11-18 19:33:54,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 380 transitions, 868 flow. Second operand has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:54,541 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:54,541 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 397 [2022-11-18 19:33:54,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:55,528 INFO L130 PetriNetUnfolder]: 555/2772 cut-off events. [2022-11-18 19:33:55,529 INFO L131 PetriNetUnfolder]: For 74/100 co-relation queries the response was YES. [2022-11-18 19:33:55,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4313 conditions, 2772 events. 555/2772 cut-off events. For 74/100 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 14812 event pairs, 504 based on Foata normal form. 0/2498 useless extension candidates. Maximal degree in co-relation 3953. Up to 1383 conditions per place. [2022-11-18 19:33:55,547 INFO L137 encePairwiseOnDemand]: 391/397 looper letters, 124 selfloop transitions, 5 changer transitions 0/379 dead transitions. [2022-11-18 19:33:55,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 379 transitions, 1124 flow [2022-11-18 19:33:55,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:33:55,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:33:55,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1599 transitions. [2022-11-18 19:33:55,554 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6712846347607053 [2022-11-18 19:33:55,554 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1599 transitions. [2022-11-18 19:33:55,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1599 transitions. [2022-11-18 19:33:55,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:55,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1599 transitions. [2022-11-18 19:33:55,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 266.5) internal successors, (1599), 6 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:55,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 397.0) internal successors, (2779), 7 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:55,568 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 397.0) internal successors, (2779), 7 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:55,569 INFO L175 Difference]: Start difference. First operand has 391 places, 380 transitions, 868 flow. Second operand 6 states and 1599 transitions. [2022-11-18 19:33:55,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 379 transitions, 1124 flow [2022-11-18 19:33:55,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 379 transitions, 1114 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:33:55,580 INFO L231 Difference]: Finished difference. Result has 390 places, 379 transitions, 866 flow [2022-11-18 19:33:55,581 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=866, PETRI_PLACES=390, PETRI_TRANSITIONS=379} [2022-11-18 19:33:55,582 INFO L288 CegarLoopForPetriNet]: 373 programPoint places, 17 predicate places. [2022-11-18 19:33:55,582 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 379 transitions, 866 flow [2022-11-18 19:33:55,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:55,583 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:55,583 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:55,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:33:55,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:55,791 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-18 19:33:55,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:55,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1807931593, now seen corresponding path program 1 times [2022-11-18 19:33:55,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:55,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633945659] [2022-11-18 19:33:55,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:55,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:55,840 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:33:55,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1201516344] [2022-11-18 19:33:55,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:55,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:55,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:55,842 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:55,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:33:56,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:56,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 19:33:56,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:56,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:33:56,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:33:56,183 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:33:56,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-18 19:33:56,212 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:33:56,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-18 19:33:56,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:56,242 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:33:56,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:56,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633945659] [2022-11-18 19:33:56,242 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:33:56,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201516344] [2022-11-18 19:33:56,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201516344] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:56,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:56,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:33:56,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198275240] [2022-11-18 19:33:56,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:56,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:33:56,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:56,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:33:56,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:33:56,248 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 397 [2022-11-18 19:33:56,251 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 379 transitions, 866 flow. Second operand has 6 states, 6 states have (on average 256.3333333333333) internal successors, (1538), 6 states have internal predecessors, (1538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:56,251 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:56,251 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 397 [2022-11-18 19:33:56,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:57,472 INFO L130 PetriNetUnfolder]: 555/2768 cut-off events. [2022-11-18 19:33:57,472 INFO L131 PetriNetUnfolder]: For 74/100 co-relation queries the response was YES. [2022-11-18 19:33:57,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4301 conditions, 2768 events. 555/2768 cut-off events. For 74/100 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 14774 event pairs, 504 based on Foata normal form. 0/2498 useless extension candidates. Maximal degree in co-relation 3947. Up to 1375 conditions per place. [2022-11-18 19:33:57,489 INFO L137 encePairwiseOnDemand]: 391/397 looper letters, 123 selfloop transitions, 5 changer transitions 0/378 dead transitions. [2022-11-18 19:33:57,489 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 378 transitions, 1120 flow [2022-11-18 19:33:57,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:33:57,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:33:57,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1603 transitions. [2022-11-18 19:33:57,495 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6729638958858103 [2022-11-18 19:33:57,495 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1603 transitions. [2022-11-18 19:33:57,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1603 transitions. [2022-11-18 19:33:57,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:57,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1603 transitions. [2022-11-18 19:33:57,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 267.1666666666667) internal successors, (1603), 6 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:57,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 397.0) internal successors, (2779), 7 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:57,572 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 397.0) internal successors, (2779), 7 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:57,573 INFO L175 Difference]: Start difference. First operand has 390 places, 379 transitions, 866 flow. Second operand 6 states and 1603 transitions. [2022-11-18 19:33:57,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 378 transitions, 1120 flow [2022-11-18 19:33:57,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 378 transitions, 1110 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:33:57,582 INFO L231 Difference]: Finished difference. Result has 389 places, 378 transitions, 864 flow [2022-11-18 19:33:57,583 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=864, PETRI_PLACES=389, PETRI_TRANSITIONS=378} [2022-11-18 19:33:57,584 INFO L288 CegarLoopForPetriNet]: 373 programPoint places, 16 predicate places. [2022-11-18 19:33:57,584 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 378 transitions, 864 flow [2022-11-18 19:33:57,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 256.3333333333333) internal successors, (1538), 6 states have internal predecessors, (1538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:57,585 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:57,585 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:57,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:33:57,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 19:33:57,792 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-18 19:33:57,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:57,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1593506439, now seen corresponding path program 1 times [2022-11-18 19:33:57,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:57,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731159904] [2022-11-18 19:33:57,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:57,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:57,832 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:33:57,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1270680921] [2022-11-18 19:33:57,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:57,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:57,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:57,834 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:57,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:33:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:58,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:33:58,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:58,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:58,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:33:58,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:58,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:58,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731159904] [2022-11-18 19:33:58,501 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:33:58,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270680921] [2022-11-18 19:33:58,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270680921] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:33:58,502 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:33:58,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-18 19:33:58,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93570663] [2022-11-18 19:33:58,502 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:33:58,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:33:58,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:58,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:33:58,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:33:58,507 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 397 [2022-11-18 19:33:58,510 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 378 transitions, 864 flow. Second operand has 8 states, 8 states have (on average 367.875) internal successors, (2943), 8 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:58,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:58,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 397 [2022-11-18 19:33:58,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:58,898 INFO L130 PetriNetUnfolder]: 13/1177 cut-off events. [2022-11-18 19:33:58,898 INFO L131 PetriNetUnfolder]: For 39/41 co-relation queries the response was YES. [2022-11-18 19:33:58,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1405 conditions, 1177 events. 13/1177 cut-off events. For 39/41 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 1492 event pairs, 0 based on Foata normal form. 4/1139 useless extension candidates. Maximal degree in co-relation 1073. Up to 15 conditions per place. [2022-11-18 19:33:58,904 INFO L137 encePairwiseOnDemand]: 391/397 looper letters, 12 selfloop transitions, 9 changer transitions 0/388 dead transitions. [2022-11-18 19:33:58,904 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 388 transitions, 928 flow [2022-11-18 19:33:58,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:33:58,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:33:58,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3317 transitions. [2022-11-18 19:33:58,912 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9283515253288553 [2022-11-18 19:33:58,912 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3317 transitions. [2022-11-18 19:33:58,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3317 transitions. [2022-11-18 19:33:58,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:58,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3317 transitions. [2022-11-18 19:33:58,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 368.55555555555554) internal successors, (3317), 9 states have internal predecessors, (3317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:58,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 397.0) internal successors, (3970), 10 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:58,931 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 397.0) internal successors, (3970), 10 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:58,931 INFO L175 Difference]: Start difference. First operand has 389 places, 378 transitions, 864 flow. Second operand 9 states and 3317 transitions. [2022-11-18 19:33:58,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 388 transitions, 928 flow [2022-11-18 19:33:58,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 388 transitions, 918 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:33:58,940 INFO L231 Difference]: Finished difference. Result has 395 places, 384 transitions, 904 flow [2022-11-18 19:33:58,941 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=904, PETRI_PLACES=395, PETRI_TRANSITIONS=384} [2022-11-18 19:33:58,941 INFO L288 CegarLoopForPetriNet]: 373 programPoint places, 22 predicate places. [2022-11-18 19:33:58,942 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 384 transitions, 904 flow [2022-11-18 19:33:58,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 367.875) internal successors, (2943), 8 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:58,943 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:58,944 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:58,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:33:59,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 19:33:59,151 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-18 19:33:59,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:59,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1830546233, now seen corresponding path program 2 times [2022-11-18 19:33:59,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:59,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708065784] [2022-11-18 19:33:59,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:59,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:59,222 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:33:59,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1917152763] [2022-11-18 19:33:59,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:33:59,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:59,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:59,225 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:59,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 19:33:59,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:33:59,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:33:59,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 19:33:59,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:59,601 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 15 treesize of output 11 [2022-11-18 19:33:59,622 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 28 treesize of output 27 [2022-11-18 19:33:59,641 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:33:59,642 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 40 treesize of output 42 [2022-11-18 19:33:59,667 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:33:59,667 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 52 treesize of output 57 [2022-11-18 19:33:59,692 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2022-11-18 19:33:59,693 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:33:59,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:59,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708065784] [2022-11-18 19:33:59,693 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:33:59,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917152763] [2022-11-18 19:33:59,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917152763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:59,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:59,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:33:59,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251925227] [2022-11-18 19:33:59,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:59,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:33:59,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:59,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:33:59,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:33:59,698 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 397 [2022-11-18 19:33:59,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 384 transitions, 904 flow. Second operand has 6 states, 6 states have (on average 248.83333333333334) internal successors, (1493), 6 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:59,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:59,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 397 [2022-11-18 19:33:59,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:02,026 INFO L130 PetriNetUnfolder]: 1007/4485 cut-off events. [2022-11-18 19:34:02,038 INFO L131 PetriNetUnfolder]: For 130/182 co-relation queries the response was YES. [2022-11-18 19:34:02,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7106 conditions, 4485 events. 1007/4485 cut-off events. For 130/182 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 26414 event pairs, 696 based on Foata normal form. 0/4011 useless extension candidates. Maximal degree in co-relation 3472. Up to 1605 conditions per place. [2022-11-18 19:34:02,060 INFO L137 encePairwiseOnDemand]: 391/397 looper letters, 168 selfloop transitions, 5 changer transitions 0/421 dead transitions. [2022-11-18 19:34:02,060 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 421 transitions, 1330 flow [2022-11-18 19:34:02,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:34:02,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:34:02,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1595 transitions. [2022-11-18 19:34:02,066 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6696053736356004 [2022-11-18 19:34:02,066 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1595 transitions. [2022-11-18 19:34:02,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1595 transitions. [2022-11-18 19:34:02,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:02,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1595 transitions. [2022-11-18 19:34:02,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 265.8333333333333) internal successors, (1595), 6 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:02,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 397.0) internal successors, (2779), 7 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:02,078 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 397.0) internal successors, (2779), 7 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:02,079 INFO L175 Difference]: Start difference. First operand has 395 places, 384 transitions, 904 flow. Second operand 6 states and 1595 transitions. [2022-11-18 19:34:02,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 421 transitions, 1330 flow [2022-11-18 19:34:02,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 421 transitions, 1324 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-18 19:34:02,089 INFO L231 Difference]: Finished difference. Result has 399 places, 384 transitions, 912 flow [2022-11-18 19:34:02,090 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=896, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=912, PETRI_PLACES=399, PETRI_TRANSITIONS=384} [2022-11-18 19:34:02,091 INFO L288 CegarLoopForPetriNet]: 373 programPoint places, 26 predicate places. [2022-11-18 19:34:02,091 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 384 transitions, 912 flow [2022-11-18 19:34:02,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 248.83333333333334) internal successors, (1493), 6 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:02,092 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:02,093 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:02,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:34:02,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 19:34:02,300 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-18 19:34:02,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:02,301 INFO L85 PathProgramCache]: Analyzing trace with hash 565895997, now seen corresponding path program 1 times [2022-11-18 19:34:02,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:02,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29703196] [2022-11-18 19:34:02,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:02,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:02,525 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:34:02,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1342188027] [2022-11-18 19:34:02,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:02,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:02,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:02,527 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:02,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 19:34:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:03,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 1319 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:34:03,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:03,682 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:03,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:34:04,307 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:04,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:04,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29703196] [2022-11-18 19:34:04,308 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:34:04,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342188027] [2022-11-18 19:34:04,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342188027] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:34:04,309 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:34:04,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-18 19:34:04,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529794109] [2022-11-18 19:34:04,309 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:34:04,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:34:04,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:04,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:34:04,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:34:04,319 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 397 [2022-11-18 19:34:04,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 384 transitions, 912 flow. Second operand has 16 states, 16 states have (on average 368.1875) internal successors, (5891), 16 states have internal predecessors, (5891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:04,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:04,325 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 397 [2022-11-18 19:34:04,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:05,729 INFO L130 PetriNetUnfolder]: 19/2189 cut-off events. [2022-11-18 19:34:05,729 INFO L131 PetriNetUnfolder]: For 129/133 co-relation queries the response was YES. [2022-11-18 19:34:05,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2681 conditions, 2189 events. 19/2189 cut-off events. For 129/133 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 3365 event pairs, 0 based on Foata normal form. 8/2127 useless extension candidates. Maximal degree in co-relation 2271. Up to 31 conditions per place. [2022-11-18 19:34:05,796 INFO L137 encePairwiseOnDemand]: 391/397 looper letters, 20 selfloop transitions, 21 changer transitions 0/408 dead transitions. [2022-11-18 19:34:05,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 408 transitions, 1094 flow [2022-11-18 19:34:05,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 19:34:05,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 19:34:05,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 7731 transitions. [2022-11-18 19:34:05,805 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9273119827275998 [2022-11-18 19:34:05,805 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 7731 transitions. [2022-11-18 19:34:05,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 7731 transitions. [2022-11-18 19:34:05,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:05,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 7731 transitions. [2022-11-18 19:34:05,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 368.14285714285717) internal successors, (7731), 21 states have internal predecessors, (7731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:05,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 397.0) internal successors, (8734), 22 states have internal predecessors, (8734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:05,836 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 397.0) internal successors, (8734), 22 states have internal predecessors, (8734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:05,837 INFO L175 Difference]: Start difference. First operand has 399 places, 384 transitions, 912 flow. Second operand 21 states and 7731 transitions. [2022-11-18 19:34:05,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 408 transitions, 1094 flow [2022-11-18 19:34:05,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 408 transitions, 1086 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:34:05,846 INFO L231 Difference]: Finished difference. Result has 420 places, 397 transitions, 1034 flow [2022-11-18 19:34:05,847 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1034, PETRI_PLACES=420, PETRI_TRANSITIONS=397} [2022-11-18 19:34:05,851 INFO L288 CegarLoopForPetriNet]: 373 programPoint places, 47 predicate places. [2022-11-18 19:34:05,851 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 397 transitions, 1034 flow [2022-11-18 19:34:05,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 368.1875) internal successors, (5891), 16 states have internal predecessors, (5891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:05,853 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:05,854 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:05,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:34:06,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 19:34:06,062 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-18 19:34:06,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:06,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1319204931, now seen corresponding path program 2 times [2022-11-18 19:34:06,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:06,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74863648] [2022-11-18 19:34:06,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:06,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:06,187 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:34:06,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [201799035] [2022-11-18 19:34:06,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:34:06,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:06,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:06,191 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:06,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 19:34:06,780 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:34:06,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:34:06,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 19:34:06,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:06,823 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 15 treesize of output 11 [2022-11-18 19:34:06,834 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 28 treesize of output 27 [2022-11-18 19:34:06,859 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:34:06,859 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 40 treesize of output 42 [2022-11-18 19:34:06,895 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:34:06,895 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 52 treesize of output 57 [2022-11-18 19:34:06,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1919 trivial. 0 not checked. [2022-11-18 19:34:06,924 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:34:06,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:06,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74863648] [2022-11-18 19:34:06,924 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:34:06,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201799035] [2022-11-18 19:34:06,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201799035] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:06,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:06,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:34:06,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286314164] [2022-11-18 19:34:06,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:06,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:34:06,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:06,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:34:06,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:34:06,929 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 397 [2022-11-18 19:34:06,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 397 transitions, 1034 flow. Second operand has 6 states, 6 states have (on average 248.83333333333334) internal successors, (1493), 6 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:06,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:06,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 397 [2022-11-18 19:34:06,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:11,996 INFO L130 PetriNetUnfolder]: 1383/6597 cut-off events. [2022-11-18 19:34:11,996 INFO L131 PetriNetUnfolder]: For 320/372 co-relation queries the response was YES. [2022-11-18 19:34:12,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10639 conditions, 6597 events. 1383/6597 cut-off events. For 320/372 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 35765 event pairs, 1260 based on Foata normal form. 0/5951 useless extension candidates. Maximal degree in co-relation 5241. Up to 2717 conditions per place. [2022-11-18 19:34:12,030 INFO L137 encePairwiseOnDemand]: 391/397 looper letters, 168 selfloop transitions, 5 changer transitions 0/434 dead transitions. [2022-11-18 19:34:12,030 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 434 transitions, 1462 flow [2022-11-18 19:34:12,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:34:12,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:34:12,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1594 transitions. [2022-11-18 19:34:12,035 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6691855583543241 [2022-11-18 19:34:12,035 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1594 transitions. [2022-11-18 19:34:12,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1594 transitions. [2022-11-18 19:34:12,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:12,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1594 transitions. [2022-11-18 19:34:12,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 265.6666666666667) internal successors, (1594), 6 states have internal predecessors, (1594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:12,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 397.0) internal successors, (2779), 7 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:12,048 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 397.0) internal successors, (2779), 7 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:12,048 INFO L175 Difference]: Start difference. First operand has 420 places, 397 transitions, 1034 flow. Second operand 6 states and 1594 transitions. [2022-11-18 19:34:12,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 434 transitions, 1462 flow [2022-11-18 19:34:12,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 434 transitions, 1438 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-11-18 19:34:12,061 INFO L231 Difference]: Finished difference. Result has 419 places, 397 transitions, 1026 flow [2022-11-18 19:34:12,062 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=1008, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1026, PETRI_PLACES=419, PETRI_TRANSITIONS=397} [2022-11-18 19:34:12,062 INFO L288 CegarLoopForPetriNet]: 373 programPoint places, 46 predicate places. [2022-11-18 19:34:12,063 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 397 transitions, 1026 flow [2022-11-18 19:34:12,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 248.83333333333334) internal successors, (1493), 6 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:12,064 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:12,064 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:12,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 19:34:12,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 19:34:12,271 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-18 19:34:12,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:12,272 INFO L85 PathProgramCache]: Analyzing trace with hash -13817340, now seen corresponding path program 1 times [2022-11-18 19:34:12,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:12,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880740881] [2022-11-18 19:34:12,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:12,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:12,430 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:34:12,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [547316258] [2022-11-18 19:34:12,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:12,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:12,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:12,432 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:12,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 19:34:13,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:13,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 2859 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 19:34:13,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:13,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1919 trivial. 0 not checked. [2022-11-18 19:34:13,742 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:34:13,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:13,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880740881] [2022-11-18 19:34:13,742 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:34:13,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547316258] [2022-11-18 19:34:13,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547316258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:13,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:13,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:34:13,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811179594] [2022-11-18 19:34:13,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:13,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:34:13,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:13,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:34:13,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:34:13,750 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 367 out of 397 [2022-11-18 19:34:13,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 397 transitions, 1026 flow. Second operand has 3 states, 3 states have (on average 368.0) internal successors, (1104), 3 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:13,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:13,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 367 of 397 [2022-11-18 19:34:13,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:15,012 INFO L130 PetriNetUnfolder]: 19/2361 cut-off events. [2022-11-18 19:34:15,012 INFO L131 PetriNetUnfolder]: For 203/269 co-relation queries the response was YES. [2022-11-18 19:34:15,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2875 conditions, 2361 events. 19/2361 cut-off events. For 203/269 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 3875 event pairs, 0 based on Foata normal form. 6/2283 useless extension candidates. Maximal degree in co-relation 2511. Up to 31 conditions per place. [2022-11-18 19:34:15,024 INFO L137 encePairwiseOnDemand]: 394/397 looper letters, 9 selfloop transitions, 2 changer transitions 0/399 dead transitions. [2022-11-18 19:34:15,024 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 399 transitions, 1052 flow [2022-11-18 19:34:15,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:34:15,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:34:15,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1113 transitions. [2022-11-18 19:34:15,028 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9345088161209067 [2022-11-18 19:34:15,028 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1113 transitions. [2022-11-18 19:34:15,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1113 transitions. [2022-11-18 19:34:15,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:15,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1113 transitions. [2022-11-18 19:34:15,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 371.0) internal successors, (1113), 3 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:15,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 397.0) internal successors, (1588), 4 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:15,036 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 397.0) internal successors, (1588), 4 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:15,036 INFO L175 Difference]: Start difference. First operand has 419 places, 397 transitions, 1026 flow. Second operand 3 states and 1113 transitions. [2022-11-18 19:34:15,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 399 transitions, 1052 flow [2022-11-18 19:34:15,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 399 transitions, 1042 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-11-18 19:34:15,049 INFO L231 Difference]: Finished difference. Result has 418 places, 397 transitions, 1024 flow [2022-11-18 19:34:15,050 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=1016, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1024, PETRI_PLACES=418, PETRI_TRANSITIONS=397} [2022-11-18 19:34:15,051 INFO L288 CegarLoopForPetriNet]: 373 programPoint places, 45 predicate places. [2022-11-18 19:34:15,051 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 397 transitions, 1024 flow [2022-11-18 19:34:15,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 368.0) internal successors, (1104), 3 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:15,051 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:15,052 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:15,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 19:34:15,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 19:34:15,264 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-18 19:34:15,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:15,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1787747428, now seen corresponding path program 1 times [2022-11-18 19:34:15,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:15,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491788109] [2022-11-18 19:34:15,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:15,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:15,423 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:34:15,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [750219972] [2022-11-18 19:34:15,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:15,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:15,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:15,426 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:15,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 19:34:16,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:16,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 2884 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 19:34:16,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:17,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1924 backedges. 1 proven. 1918 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:34:17,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:34:19,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1924 backedges. 1 proven. 1918 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:34:19,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:19,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491788109] [2022-11-18 19:34:19,159 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:34:19,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750219972] [2022-11-18 19:34:19,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750219972] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:34:19,160 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:34:19,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-18 19:34:19,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642435968] [2022-11-18 19:34:19,161 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:34:19,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 19:34:19,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:19,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 19:34:19,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2022-11-18 19:34:19,174 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 397 [2022-11-18 19:34:19,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 397 transitions, 1024 flow. Second operand has 32 states, 32 states have (on average 368.375) internal successors, (11788), 32 states have internal predecessors, (11788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:19,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:19,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 397 [2022-11-18 19:34:19,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:22,322 INFO L130 PetriNetUnfolder]: 19/3825 cut-off events. [2022-11-18 19:34:22,322 INFO L131 PetriNetUnfolder]: For 720/726 co-relation queries the response was YES. [2022-11-18 19:34:22,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4929 conditions, 3825 events. 19/3825 cut-off events. For 720/726 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 3891 event pairs, 0 based on Foata normal form. 16/3761 useless extension candidates. Maximal degree in co-relation 4576. Up to 63 conditions per place. [2022-11-18 19:34:22,336 INFO L137 encePairwiseOnDemand]: 391/397 looper letters, 36 selfloop transitions, 45 changer transitions 0/448 dead transitions. [2022-11-18 19:34:22,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 448 transitions, 1486 flow [2022-11-18 19:34:22,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-18 19:34:22,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-18 19:34:22,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 16559 transitions. [2022-11-18 19:34:22,358 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9268961656870977 [2022-11-18 19:34:22,359 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 16559 transitions. [2022-11-18 19:34:22,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 16559 transitions. [2022-11-18 19:34:22,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:22,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 16559 transitions. [2022-11-18 19:34:22,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 367.97777777777776) internal successors, (16559), 45 states have internal predecessors, (16559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:22,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 397.0) internal successors, (18262), 46 states have internal predecessors, (18262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:22,429 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 397.0) internal successors, (18262), 46 states have internal predecessors, (18262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:22,431 INFO L175 Difference]: Start difference. First operand has 418 places, 397 transitions, 1024 flow. Second operand 45 states and 16559 transitions. [2022-11-18 19:34:22,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 448 transitions, 1486 flow [2022-11-18 19:34:22,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 448 transitions, 1482 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:34:22,446 INFO L231 Difference]: Finished difference. Result has 469 places, 422 transitions, 1322 flow [2022-11-18 19:34:22,446 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=1020, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1322, PETRI_PLACES=469, PETRI_TRANSITIONS=422} [2022-11-18 19:34:22,447 INFO L288 CegarLoopForPetriNet]: 373 programPoint places, 96 predicate places. [2022-11-18 19:34:22,448 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 422 transitions, 1322 flow [2022-11-18 19:34:22,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 368.375) internal successors, (11788), 32 states have internal predecessors, (11788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:22,451 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:22,452 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:22,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 19:34:22,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 19:34:22,672 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-18 19:34:22,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:22,673 INFO L85 PathProgramCache]: Analyzing trace with hash 555953308, now seen corresponding path program 2 times [2022-11-18 19:34:22,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:22,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999669538] [2022-11-18 19:34:22,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:22,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:22,954 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:34:22,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1404069968] [2022-11-18 19:34:22,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:34:22,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:22,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:22,957 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:22,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 19:34:24,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:34:24,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:34:25,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 5836 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-18 19:34:25,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:27,509 INFO L134 CoverageAnalysis]: Checked inductivity of 9576 backedges. 1 proven. 9570 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:34:27,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:34:31,137 INFO L134 CoverageAnalysis]: Checked inductivity of 9576 backedges. 1 proven. 9570 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:34:31,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:31,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999669538] [2022-11-18 19:34:31,138 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:34:31,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404069968] [2022-11-18 19:34:31,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404069968] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:34:31,139 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:34:31,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2022-11-18 19:34:31,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680369174] [2022-11-18 19:34:31,140 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:34:31,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-18 19:34:31,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:31,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-18 19:34:31,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2022-11-18 19:34:31,168 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 397 [2022-11-18 19:34:31,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 422 transitions, 1322 flow. Second operand has 61 states, 61 states have (on average 368.4754098360656) internal successors, (22477), 61 states have internal predecessors, (22477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:31,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:31,192 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 397 [2022-11-18 19:34:31,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:41,458 INFO L130 PetriNetUnfolder]: 19/6570 cut-off events. [2022-11-18 19:34:41,458 INFO L131 PetriNetUnfolder]: For 4407/4413 co-relation queries the response was YES. [2022-11-18 19:34:41,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9007 conditions, 6570 events. 19/6570 cut-off events. For 4407/4413 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 3921 event pairs, 0 based on Foata normal form. 30/6520 useless extension candidates. Maximal degree in co-relation 8650. Up to 123 conditions per place. [2022-11-18 19:34:41,476 INFO L137 encePairwiseOnDemand]: 391/397 looper letters, 66 selfloop transitions, 90 changer transitions 0/523 dead transitions. [2022-11-18 19:34:41,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 558 places, 523 transitions, 2438 flow [2022-11-18 19:34:41,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-18 19:34:41,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-11-18 19:34:41,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 33111 transitions. [2022-11-18 19:34:41,512 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9267002518891687 [2022-11-18 19:34:41,513 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 33111 transitions. [2022-11-18 19:34:41,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 33111 transitions. [2022-11-18 19:34:41,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:41,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 33111 transitions. [2022-11-18 19:34:41,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 367.9) internal successors, (33111), 90 states have internal predecessors, (33111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:41,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 397.0) internal successors, (36127), 91 states have internal predecessors, (36127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:41,620 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 397.0) internal successors, (36127), 91 states have internal predecessors, (36127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:41,620 INFO L175 Difference]: Start difference. First operand has 469 places, 422 transitions, 1322 flow. Second operand 90 states and 33111 transitions. [2022-11-18 19:34:41,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 558 places, 523 transitions, 2438 flow [2022-11-18 19:34:41,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 523 transitions, 2352 flow, removed 25 selfloop flow, removed 18 redundant places. [2022-11-18 19:34:41,651 INFO L231 Difference]: Finished difference. Result has 556 places, 468 transitions, 1920 flow [2022-11-18 19:34:41,652 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=1266, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=1920, PETRI_PLACES=556, PETRI_TRANSITIONS=468} [2022-11-18 19:34:41,652 INFO L288 CegarLoopForPetriNet]: 373 programPoint places, 183 predicate places. [2022-11-18 19:34:41,652 INFO L495 AbstractCegarLoop]: Abstraction has has 556 places, 468 transitions, 1920 flow [2022-11-18 19:34:41,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 368.4754098360656) internal successors, (22477), 61 states have internal predecessors, (22477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:41,656 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:41,657 INFO L209 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:41,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 19:34:41,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 19:34:41,871 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-18 19:34:41,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:41,872 INFO L85 PathProgramCache]: Analyzing trace with hash 417763890, now seen corresponding path program 3 times [2022-11-18 19:34:41,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:41,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171497915] [2022-11-18 19:34:41,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:41,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:42,371 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:34:42,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1715048599] [2022-11-18 19:34:42,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:34:42,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:42,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:42,375 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:42,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 19:34:44,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 19:34:44,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:34:44,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:34:44,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:50,258 INFO L134 CoverageAnalysis]: Checked inductivity of 39621 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39620 trivial. 0 not checked. [2022-11-18 19:34:50,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:34:56,720 INFO L134 CoverageAnalysis]: Checked inductivity of 39621 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39620 trivial. 0 not checked. [2022-11-18 19:34:56,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:56,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171497915] [2022-11-18 19:34:56,721 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:34:56,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715048599] [2022-11-18 19:34:56,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715048599] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:34:56,721 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:34:56,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-18 19:34:56,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791706895] [2022-11-18 19:34:56,723 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:34:56,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:34:56,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:56,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:34:56,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:34:56,729 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 363 out of 397 [2022-11-18 19:34:56,741 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 468 transitions, 1920 flow. Second operand has 8 states, 8 states have (on average 365.75) internal successors, (2926), 8 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:56,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:56,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 363 of 397 [2022-11-18 19:34:56,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:35:15,547 INFO L130 PetriNetUnfolder]: 12/8830 cut-off events. [2022-11-18 19:35:15,547 INFO L131 PetriNetUnfolder]: For 3447/3450 co-relation queries the response was YES. [2022-11-18 19:35:15,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12362 conditions, 8830 events. 12/8830 cut-off events. For 3447/3450 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1533 event pairs, 0 based on Foata normal form. 2/8792 useless extension candidates. Maximal degree in co-relation 12150. Up to 181 conditions per place. [2022-11-18 19:35:15,572 INFO L137 encePairwiseOnDemand]: 391/397 looper letters, 23 selfloop transitions, 9 changer transitions 0/484 dead transitions. [2022-11-18 19:35:15,572 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 484 transitions, 2026 flow [2022-11-18 19:35:15,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:35:15,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:35:15,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3299 transitions. [2022-11-18 19:35:15,577 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9233137419535404 [2022-11-18 19:35:15,577 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3299 transitions. [2022-11-18 19:35:15,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3299 transitions. [2022-11-18 19:35:15,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:35:15,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3299 transitions. [2022-11-18 19:35:15,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 366.55555555555554) internal successors, (3299), 9 states have internal predecessors, (3299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:15,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 397.0) internal successors, (3970), 10 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:15,590 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 397.0) internal successors, (3970), 10 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:15,590 INFO L175 Difference]: Start difference. First operand has 556 places, 468 transitions, 1920 flow. Second operand 9 states and 3299 transitions. [2022-11-18 19:35:15,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 484 transitions, 2026 flow [2022-11-18 19:35:15,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 484 transitions, 1908 flow, removed 17 selfloop flow, removed 42 redundant places. [2022-11-18 19:35:15,647 INFO L231 Difference]: Finished difference. Result has 525 places, 474 transitions, 1852 flow [2022-11-18 19:35:15,648 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=1802, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1852, PETRI_PLACES=525, PETRI_TRANSITIONS=474} [2022-11-18 19:35:15,649 INFO L288 CegarLoopForPetriNet]: 373 programPoint places, 152 predicate places. [2022-11-18 19:35:15,649 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 474 transitions, 1852 flow [2022-11-18 19:35:15,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 365.75) internal successors, (2926), 8 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:15,650 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:35:15,651 INFO L209 CegarLoopForPetriNet]: trace histogram [31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:35:15,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:15,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 19:35:15,862 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-18 19:35:15,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:15,863 INFO L85 PathProgramCache]: Analyzing trace with hash -2061337793, now seen corresponding path program 1 times [2022-11-18 19:35:15,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:15,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644845999] [2022-11-18 19:35:15,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:15,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:16,329 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:35:16,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2076147686] [2022-11-18 19:35:16,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:16,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:16,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:16,339 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:35:16,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 19:35:20,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:20,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 11530 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 19:35:20,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:20,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:35:20,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:35:20,505 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:35:20,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-18 19:35:20,549 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:35:20,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-18 19:35:20,582 INFO L134 CoverageAnalysis]: Checked inductivity of 41200 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 41080 trivial. 0 not checked. [2022-11-18 19:35:20,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:35:20,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:20,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644845999] [2022-11-18 19:35:20,583 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:35:20,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076147686] [2022-11-18 19:35:20,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076147686] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:35:20,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:35:20,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:35:20,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138205577] [2022-11-18 19:35:20,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:35:20,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:35:20,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:20,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:35:20,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:35:20,593 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 397 [2022-11-18 19:35:20,594 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 474 transitions, 1852 flow. Second operand has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:20,594 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:35:20,594 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 397 [2022-11-18 19:35:20,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:35:52,851 INFO L130 PetriNetUnfolder]: 602/10806 cut-off events. [2022-11-18 19:35:52,851 INFO L131 PetriNetUnfolder]: For 4019/4045 co-relation queries the response was YES. [2022-11-18 19:35:52,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19266 conditions, 10806 events. 602/10806 cut-off events. For 4019/4045 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 17022 event pairs, 540 based on Foata normal form. 60/10562 useless extension candidates. Maximal degree in co-relation 18102. Up to 4874 conditions per place. [2022-11-18 19:35:52,899 INFO L137 encePairwiseOnDemand]: 391/397 looper letters, 115 selfloop transitions, 10 changer transitions 0/473 dead transitions. [2022-11-18 19:35:52,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 473 transitions, 2098 flow [2022-11-18 19:35:52,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:35:52,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:35:52,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1610 transitions. [2022-11-18 19:35:52,902 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6759026028547439 [2022-11-18 19:35:52,902 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1610 transitions. [2022-11-18 19:35:52,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1610 transitions. [2022-11-18 19:35:52,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:35:52,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1610 transitions. [2022-11-18 19:35:52,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 268.3333333333333) internal successors, (1610), 6 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:52,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 397.0) internal successors, (2779), 7 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:52,909 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 397.0) internal successors, (2779), 7 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:52,909 INFO L175 Difference]: Start difference. First operand has 525 places, 474 transitions, 1852 flow. Second operand 6 states and 1610 transitions. [2022-11-18 19:35:52,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 473 transitions, 2098 flow [2022-11-18 19:35:52,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 473 transitions, 2094 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-11-18 19:35:52,962 INFO L231 Difference]: Finished difference. Result has 529 places, 473 transitions, 1864 flow [2022-11-18 19:35:52,963 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=1844, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1864, PETRI_PLACES=529, PETRI_TRANSITIONS=473} [2022-11-18 19:35:52,964 INFO L288 CegarLoopForPetriNet]: 373 programPoint places, 156 predicate places. [2022-11-18 19:35:52,964 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 473 transitions, 1864 flow [2022-11-18 19:35:52,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:52,964 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:35:52,967 INFO L209 CegarLoopForPetriNet]: trace histogram [90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:35:53,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:53,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:53,191 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-18 19:35:53,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:53,193 INFO L85 PathProgramCache]: Analyzing trace with hash -684310136, now seen corresponding path program 4 times [2022-11-18 19:35:53,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:53,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890034818] [2022-11-18 19:35:53,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:53,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:54,796 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:35:54,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2128037974] [2022-11-18 19:35:54,797 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:35:54,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:54,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:54,798 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:35:54,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be6a62a-1194-4aea-a295-2e2ad0b7e602/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 19:36:06,562 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:36:06,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:36:06,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 32490 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:36:06,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:24,827 INFO L134 CoverageAnalysis]: Checked inductivity of 364817 backedges. 0 proven. 245967 refuted. 0 times theorem prover too weak. 118850 trivial. 0 not checked. [2022-11-18 19:36:24,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:36:44,024 INFO L134 CoverageAnalysis]: Checked inductivity of 364817 backedges. 0 proven. 245967 refuted. 0 times theorem prover too weak. 118850 trivial. 0 not checked. [2022-11-18 19:36:44,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:44,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890034818] [2022-11-18 19:36:44,025 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:36:44,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128037974] [2022-11-18 19:36:44,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128037974] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:36:44,025 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:36:44,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-18 19:36:44,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556690310] [2022-11-18 19:36:44,032 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:36:44,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:36:44,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:44,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:36:44,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:36:44,040 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 363 out of 397 [2022-11-18 19:36:44,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 473 transitions, 1864 flow. Second operand has 16 states, 16 states have (on average 366.375) internal successors, (5862), 16 states have internal predecessors, (5862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:44,043 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:36:44,043 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 363 of 397 [2022-11-18 19:36:44,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand