./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 e04fb08f 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_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/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_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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-e04fb08 [2022-11-16 12:00:22,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:00:22,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:00:22,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:00:22,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:00:22,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:00:22,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:00:22,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:00:22,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:00:22,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:00:22,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:00:22,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:00:22,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:00:22,080 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:00:22,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:00:22,088 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:00:22,089 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:00:22,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:00:22,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:00:22,104 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:00:22,105 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:00:22,108 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:00:22,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:00:22,110 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:00:22,113 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:00:22,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:00:22,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:00:22,115 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:00:22,115 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:00:22,116 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:00:22,116 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:00:22,117 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:00:22,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:00:22,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:00:22,137 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:00:22,137 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:00:22,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:00:22,138 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:00:22,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:00:22,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:00:22,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:00:22,141 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-16 12:00:22,175 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:00:22,175 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:00:22,175 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:00:22,176 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:00:22,176 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:00:22,176 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:00:22,177 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:00:22,177 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:00:22,178 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:00:22,178 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:00:22,178 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:00:22,178 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:00:22,179 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:00:22,179 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:00:22,179 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:00:22,179 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:00:22,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:00:22,180 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:00:22,180 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-16 12:00:22,180 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:00:22,180 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:00:22,180 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:00:22,181 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:00:22,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:00:22,181 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:00:22,181 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:00:22,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:00:22,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:00:22,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:00:22,182 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:00:22,182 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:00:22,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:00:22,183 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:00:22,183 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:00:22,183 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:00:22,184 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_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 [2022-11-16 12:00:22,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:00:22,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:00:22,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:00:22,460 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:00:22,461 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:00:22,462 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2022-11-16 12:00:22,536 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/data/7812bb41a/15aba472defc40f9acdcde0c1644a22b/FLAG564df42da [2022-11-16 12:00:23,063 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:00:23,066 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2022-11-16 12:00:23,083 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/data/7812bb41a/15aba472defc40f9acdcde0c1644a22b/FLAG564df42da [2022-11-16 12:00:23,333 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/data/7812bb41a/15aba472defc40f9acdcde0c1644a22b [2022-11-16 12:00:23,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:00:23,337 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:00:23,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:00:23,343 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:00:23,346 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:00:23,347 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:00:23" (1/1) ... [2022-11-16 12:00:23,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6528f7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:23, skipping insertion in model container [2022-11-16 12:00:23,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:00:23" (1/1) ... [2022-11-16 12:00:23,356 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:00:23,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:00:23,911 WARN L229 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_dd7abe29-a2b9-453a-b556-61e54b00d3e0/sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i[47038,47051] [2022-11-16 12:00:23,944 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 12:00:23,947 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 12:00:23,950 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 12:00:23,953 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 12:00:24,000 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:00:24,019 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:00:24,075 WARN L229 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_dd7abe29-a2b9-453a-b556-61e54b00d3e0/sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i[47038,47051] [2022-11-16 12:00:24,085 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 12:00:24,087 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 12:00:24,089 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 12:00:24,091 WARN L1554 CHandler]: Possible shadowing of function new [2022-11-16 12:00:24,110 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:00:24,189 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:00:24,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:24 WrapperNode [2022-11-16 12:00:24,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:00:24,190 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:00:24,191 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:00:24,191 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:00:24,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:24" (1/1) ... [2022-11-16 12:00:24,230 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:24" (1/1) ... [2022-11-16 12:00:24,280 INFO L138 Inliner]: procedures = 279, calls = 51, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 345 [2022-11-16 12:00:24,286 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:00:24,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:00:24,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:00:24,288 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:00:24,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:24" (1/1) ... [2022-11-16 12:00:24,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:24" (1/1) ... [2022-11-16 12:00:24,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:24" (1/1) ... [2022-11-16 12:00:24,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:24" (1/1) ... [2022-11-16 12:00:24,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:24" (1/1) ... [2022-11-16 12:00:24,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:24" (1/1) ... [2022-11-16 12:00:24,339 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:24" (1/1) ... [2022-11-16 12:00:24,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:24" (1/1) ... [2022-11-16 12:00:24,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:00:24,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:00:24,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:00:24,347 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:00:24,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:24" (1/1) ... [2022-11-16 12:00:24,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:00:24,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:00:24,408 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:00:24,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:00:24,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:00:24,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 12:00:24,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:00:24,467 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:00:24,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:00:24,467 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 12:00:24,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:00:24,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:00:24,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 12:00:24,468 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-16 12:00:24,468 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-16 12:00:24,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:00:24,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:00:24,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:00:24,470 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:00:24,711 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:00:24,713 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:00:25,400 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:00:25,412 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:00:25,412 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-16 12:00:25,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:00:25 BoogieIcfgContainer [2022-11-16 12:00:25,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:00:25,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:00:25,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:00:25,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:00:25,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:00:23" (1/3) ... [2022-11-16 12:00:25,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@581437b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:00:25, skipping insertion in model container [2022-11-16 12:00:25,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:24" (2/3) ... [2022-11-16 12:00:25,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@581437b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:00:25, skipping insertion in model container [2022-11-16 12:00:25,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:00:25" (3/3) ... [2022-11-16 12:00:25,425 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_93-evilcollapse_racefree.i [2022-11-16 12:00:25,434 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:00:25,445 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:00:25,445 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-11-16 12:00:25,445 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:00:25,588 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-16 12:00:25,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 373 places, 397 transitions, 802 flow [2022-11-16 12:00:25,762 INFO L130 PetriNetUnfolder]: 29/420 cut-off events. [2022-11-16 12:00:25,762 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-16 12:00:25,770 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. [2022-11-16 12:00:25,770 INFO L82 GeneralOperation]: Start removeDead. Operand has 373 places, 397 transitions, 802 flow [2022-11-16 12:00:25,778 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 373 places, 397 transitions, 802 flow [2022-11-16 12:00:25,788 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:00:25,805 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;@2d977228, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:00:25,806 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2022-11-16 12:00:25,827 INFO L130 PetriNetUnfolder]: 1/64 cut-off events. [2022-11-16 12:00:25,827 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:00:25,827 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:25,828 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] [2022-11-16 12:00:25,829 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)] === [2022-11-16 12:00:25,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:25,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1358136975, now seen corresponding path program 1 times [2022-11-16 12:00:25,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:25,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138797565] [2022-11-16 12:00:25,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:25,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:26,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:26,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:00:26,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:26,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138797565] [2022-11-16 12:00:26,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138797565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:26,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:26,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:00:26,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324203202] [2022-11-16 12:00:26,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:26,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:00:26,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:26,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:00:26,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:00:26,662 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 397 [2022-11-16 12:00:26,668 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) [2022-11-16 12:00:26,668 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:26,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 397 [2022-11-16 12:00:26,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:27,308 INFO L130 PetriNetUnfolder]: 278/1284 cut-off events. [2022-11-16 12:00:27,308 INFO L131 PetriNetUnfolder]: For 14/27 co-relation queries the response was YES. [2022-11-16 12:00:27,315 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. [2022-11-16 12:00:27,323 INFO L137 encePairwiseOnDemand]: 365/397 looper letters, 122 selfloop transitions, 10 changer transitions 2/374 dead transitions. [2022-11-16 12:00:27,324 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 374 transitions, 1020 flow [2022-11-16 12:00:27,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:00:27,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:00:27,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1606 transitions. [2022-11-16 12:00:27,347 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6742233417296389 [2022-11-16 12:00:27,348 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1606 transitions. [2022-11-16 12:00:27,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1606 transitions. [2022-11-16 12:00:27,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:27,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1606 transitions. [2022-11-16 12:00:27,366 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) [2022-11-16 12:00:27,378 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) [2022-11-16 12:00:27,380 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) [2022-11-16 12:00:27,381 INFO L175 Difference]: Start difference. First operand has 373 places, 397 transitions, 802 flow. Second operand 6 states and 1606 transitions. [2022-11-16 12:00:27,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 374 transitions, 1020 flow [2022-11-16 12:00:27,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 374 transitions, 1020 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:00:27,396 INFO L231 Difference]: Finished difference. Result has 375 places, 372 transitions, 772 flow [2022-11-16 12:00:27,399 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} [2022-11-16 12:00:27,405 INFO L288 CegarLoopForPetriNet]: 373 programPoint places, 2 predicate places. [2022-11-16 12:00:27,405 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 372 transitions, 772 flow [2022-11-16 12:00:27,407 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) [2022-11-16 12:00:27,407 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:27,407 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] [2022-11-16 12:00:27,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:00:27,409 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)] === [2022-11-16 12:00:27,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:27,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1039641367, now seen corresponding path program 1 times [2022-11-16 12:00:27,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:27,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867430409] [2022-11-16 12:00:27,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:27,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:27,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:27,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:00:27,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:27,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867430409] [2022-11-16 12:00:27,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867430409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:27,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:27,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:00:27,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988762579] [2022-11-16 12:00:27,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:27,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:00:27,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:27,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:00:27,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:00:27,980 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 397 [2022-11-16 12:00:27,982 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) [2022-11-16 12:00:27,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:27,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 397 [2022-11-16 12:00:27,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:28,448 INFO L130 PetriNetUnfolder]: 278/1280 cut-off events. [2022-11-16 12:00:28,449 INFO L131 PetriNetUnfolder]: For 16/29 co-relation queries the response was YES. [2022-11-16 12:00:28,451 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. [2022-11-16 12:00:28,455 INFO L137 encePairwiseOnDemand]: 385/397 looper letters, 120 selfloop transitions, 10 changer transitions 0/370 dead transitions. [2022-11-16 12:00:28,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 370 transitions, 1028 flow [2022-11-16 12:00:28,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:00:28,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:00:28,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1584 transitions. [2022-11-16 12:00:28,460 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6649874055415617 [2022-11-16 12:00:28,460 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1584 transitions. [2022-11-16 12:00:28,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1584 transitions. [2022-11-16 12:00:28,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:28,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1584 transitions. [2022-11-16 12:00:28,464 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) [2022-11-16 12:00:28,469 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) [2022-11-16 12:00:28,471 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) [2022-11-16 12:00:28,471 INFO L175 Difference]: Start difference. First operand has 375 places, 372 transitions, 772 flow. Second operand 6 states and 1584 transitions. [2022-11-16 12:00:28,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 370 transitions, 1028 flow [2022-11-16 12:00:28,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 370 transitions, 1008 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:00:28,482 INFO L231 Difference]: Finished difference. Result has 371 places, 370 transitions, 768 flow [2022-11-16 12:00:28,483 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} [2022-11-16 12:00:28,483 INFO L288 CegarLoopForPetriNet]: 373 programPoint places, -2 predicate places. [2022-11-16 12:00:28,484 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 370 transitions, 768 flow [2022-11-16 12:00:28,485 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) [2022-11-16 12:00:28,485 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:28,485 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] [2022-11-16 12:00:28,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:00:28,486 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)] === [2022-11-16 12:00:28,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:28,489 INFO L85 PathProgramCache]: Analyzing trace with hash 229261010, now seen corresponding path program 1 times [2022-11-16 12:00:28,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:28,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138691501] [2022-11-16 12:00:28,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:28,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:28,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:28,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:00:28,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:28,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138691501] [2022-11-16 12:00:28,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138691501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:28,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:28,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:00:28,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43454113] [2022-11-16 12:00:28,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:28,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:00:28,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:28,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:00:28,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:00:28,571 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 364 out of 397 [2022-11-16 12:00:28,572 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) [2022-11-16 12:00:28,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:28,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 364 of 397 [2022-11-16 12:00:28,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:28,676 INFO L130 PetriNetUnfolder]: 8/515 cut-off events. [2022-11-16 12:00:28,677 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-16 12:00:28,678 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. [2022-11-16 12:00:28,680 INFO L137 encePairwiseOnDemand]: 394/397 looper letters, 17 selfloop transitions, 2 changer transitions 0/377 dead transitions. [2022-11-16 12:00:28,680 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 377 transitions, 820 flow [2022-11-16 12:00:28,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:00:28,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:00:28,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1112 transitions. [2022-11-16 12:00:28,683 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9336691855583543 [2022-11-16 12:00:28,683 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1112 transitions. [2022-11-16 12:00:28,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1112 transitions. [2022-11-16 12:00:28,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:28,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1112 transitions. [2022-11-16 12:00:28,686 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) [2022-11-16 12:00:28,689 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) [2022-11-16 12:00:28,690 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) [2022-11-16 12:00:28,690 INFO L175 Difference]: Start difference. First operand has 371 places, 370 transitions, 768 flow. Second operand 3 states and 1112 transitions. [2022-11-16 12:00:28,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 377 transitions, 820 flow [2022-11-16 12:00:28,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 377 transitions, 800 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:00:28,700 INFO L231 Difference]: Finished difference. Result has 369 places, 371 transitions, 760 flow [2022-11-16 12:00:28,701 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} [2022-11-16 12:00:28,703 INFO L288 CegarLoopForPetriNet]: 373 programPoint places, -4 predicate places. [2022-11-16 12:00:28,703 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 371 transitions, 760 flow [2022-11-16 12:00:28,704 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) [2022-11-16 12:00:28,705 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:28,705 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] [2022-11-16 12:00:28,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:00:28,706 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)] === [2022-11-16 12:00:28,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:28,707 INFO L85 PathProgramCache]: Analyzing trace with hash 741890038, now seen corresponding path program 1 times [2022-11-16 12:00:28,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:28,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462777864] [2022-11-16 12:00:28,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:28,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:28,735 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:00:28,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1667665454] [2022-11-16 12:00:28,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:28,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:28,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:00:28,742 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:00:28,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:00:28,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:28,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-16 12:00:28,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:00:28,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:00:29,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:29,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:00:29,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:29,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:29,070 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:00:29,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-16 12:00:29,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:29,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:29,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:29,120 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:00:29,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-16 12:00:29,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:00:29,151 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:00:29,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:29,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462777864] [2022-11-16 12:00:29,152 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:00:29,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667665454] [2022-11-16 12:00:29,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667665454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:29,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:29,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:00:29,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386770531] [2022-11-16 12:00:29,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:29,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:00:29,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:29,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:00:29,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:00:29,159 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 397 [2022-11-16 12:00:29,162 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) [2022-11-16 12:00:29,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:29,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 397 [2022-11-16 12:00:29,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:30,247 INFO L130 PetriNetUnfolder]: 557/2568 cut-off events. [2022-11-16 12:00:30,247 INFO L131 PetriNetUnfolder]: For 29/55 co-relation queries the response was YES. [2022-11-16 12:00:30,251 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. [2022-11-16 12:00:30,261 INFO L137 encePairwiseOnDemand]: 387/397 looper letters, 190 selfloop transitions, 9 changer transitions 0/443 dead transitions. [2022-11-16 12:00:30,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 443 transitions, 1308 flow [2022-11-16 12:00:30,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:00:30,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:00:30,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2405 transitions. [2022-11-16 12:00:30,335 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6731038343129023 [2022-11-16 12:00:30,335 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2405 transitions. [2022-11-16 12:00:30,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2405 transitions. [2022-11-16 12:00:30,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:30,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2405 transitions. [2022-11-16 12:00:30,344 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) [2022-11-16 12:00:30,354 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) [2022-11-16 12:00:30,356 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) [2022-11-16 12:00:30,356 INFO L175 Difference]: Start difference. First operand has 369 places, 371 transitions, 760 flow. Second operand 9 states and 2405 transitions. [2022-11-16 12:00:30,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 443 transitions, 1308 flow [2022-11-16 12:00:30,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 443 transitions, 1306 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:00:30,367 INFO L231 Difference]: Finished difference. Result has 376 places, 371 transitions, 782 flow [2022-11-16 12:00:30,367 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} [2022-11-16 12:00:30,369 INFO L288 CegarLoopForPetriNet]: 373 programPoint places, 3 predicate places. [2022-11-16 12:00:30,369 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 371 transitions, 782 flow [2022-11-16 12:00:30,370 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) [2022-11-16 12:00:30,370 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:30,371 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] [2022-11-16 12:00:30,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:00:30,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:30,577 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)] === [2022-11-16 12:00:30,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:30,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1683868573, now seen corresponding path program 1 times [2022-11-16 12:00:30,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:30,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659516664] [2022-11-16 12:00:30,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:30,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:30,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:30,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:00:30,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:30,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659516664] [2022-11-16 12:00:30,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659516664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:30,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:30,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:00:30,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332595460] [2022-11-16 12:00:30,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:30,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:00:30,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:30,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:00:30,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:00:30,683 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 367 out of 397 [2022-11-16 12:00:30,685 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) [2022-11-16 12:00:30,685 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:30,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 367 of 397 [2022-11-16 12:00:30,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:30,836 INFO L130 PetriNetUnfolder]: 8/703 cut-off events. [2022-11-16 12:00:30,836 INFO L131 PetriNetUnfolder]: For 10/11 co-relation queries the response was YES. [2022-11-16 12:00:30,837 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. [2022-11-16 12:00:30,839 INFO L137 encePairwiseOnDemand]: 394/397 looper letters, 11 selfloop transitions, 2 changer transitions 0/375 dead transitions. [2022-11-16 12:00:30,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 375 transitions, 816 flow [2022-11-16 12:00:30,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:00:30,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:00:30,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1115 transitions. [2022-11-16 12:00:30,842 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9361880772460117 [2022-11-16 12:00:30,842 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1115 transitions. [2022-11-16 12:00:30,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1115 transitions. [2022-11-16 12:00:30,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:30,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1115 transitions. [2022-11-16 12:00:30,845 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) [2022-11-16 12:00:30,848 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) [2022-11-16 12:00:30,848 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) [2022-11-16 12:00:30,849 INFO L175 Difference]: Start difference. First operand has 376 places, 371 transitions, 782 flow. Second operand 3 states and 1115 transitions. [2022-11-16 12:00:30,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 375 transitions, 816 flow [2022-11-16 12:00:30,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 375 transitions, 802 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-16 12:00:30,856 INFO L231 Difference]: Finished difference. Result has 372 places, 372 transitions, 780 flow [2022-11-16 12:00:30,857 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} [2022-11-16 12:00:30,858 INFO L288 CegarLoopForPetriNet]: 373 programPoint places, -1 predicate places. [2022-11-16 12:00:30,858 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 372 transitions, 780 flow [2022-11-16 12:00:30,859 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) [2022-11-16 12:00:30,859 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:30,859 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] [2022-11-16 12:00:30,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:00:30,859 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)] === [2022-11-16 12:00:30,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:30,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1566635370, now seen corresponding path program 1 times [2022-11-16 12:00:30,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:30,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304978956] [2022-11-16 12:00:30,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:30,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:30,887 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:00:30,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [850113999] [2022-11-16 12:00:30,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:30,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:30,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:00:30,889 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:00:30,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:00:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:31,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-16 12:00:31,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:00:31,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:00:31,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:31,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:00:31,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:31,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:31,596 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:00:31,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-16 12:00:31,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:31,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:31,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:00:31,639 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:00:31,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-16 12:00:31,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:00:31,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:00:31,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:31,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304978956] [2022-11-16 12:00:31,671 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:00:31,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850113999] [2022-11-16 12:00:31,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850113999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:31,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:31,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:00:31,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248402914] [2022-11-16 12:00:31,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:31,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:00:31,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:31,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:00:31,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:00:31,676 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 397 [2022-11-16 12:00:31,679 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) [2022-11-16 12:00:31,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:31,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 397 [2022-11-16 12:00:31,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:32,908 INFO L130 PetriNetUnfolder]: 615/2832 cut-off events. [2022-11-16 12:00:32,908 INFO L131 PetriNetUnfolder]: For 39/65 co-relation queries the response was YES. [2022-11-16 12:00:32,913 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. [2022-11-16 12:00:32,921 INFO L137 encePairwiseOnDemand]: 385/397 looper letters, 312 selfloop transitions, 13 changer transitions 0/556 dead transitions. [2022-11-16 12:00:32,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 556 transitions, 1812 flow [2022-11-16 12:00:32,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:00:32,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 12:00:32,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3098 transitions. [2022-11-16 12:00:32,930 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6502938706968934 [2022-11-16 12:00:32,930 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3098 transitions. [2022-11-16 12:00:32,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3098 transitions. [2022-11-16 12:00:32,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:32,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3098 transitions. [2022-11-16 12:00:32,938 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) [2022-11-16 12:00:32,946 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) [2022-11-16 12:00:32,948 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) [2022-11-16 12:00:32,948 INFO L175 Difference]: Start difference. First operand has 372 places, 372 transitions, 780 flow. Second operand 12 states and 3098 transitions. [2022-11-16 12:00:32,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 556 transitions, 1812 flow [2022-11-16 12:00:32,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 556 transitions, 1810 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:00:32,958 INFO L231 Difference]: Finished difference. Result has 391 places, 382 transitions, 868 flow [2022-11-16 12:00:32,959 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} [2022-11-16 12:00:32,960 INFO L288 CegarLoopForPetriNet]: 373 programPoint places, 18 predicate places. [2022-11-16 12:00:32,960 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 382 transitions, 868 flow [2022-11-16 12:00:32,961 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) [2022-11-16 12:00:32,961 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:32,962 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] [2022-11-16 12:00:32,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:00:33,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 12:00:33,168 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)] === [2022-11-16 12:00:33,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:33,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1895121972, now seen corresponding path program 1 times [2022-11-16 12:00:33,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:33,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144288826] [2022-11-16 12:00:33,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:33,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:33,202 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:00:33,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [549458655] [2022-11-16 12:00:33,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:33,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:33,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:00:33,204 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:00:33,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:00:33,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:33,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 12:00:33,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:00:33,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:00:33,436 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 [2022-11-16 12:00:33,455 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:00:33,455 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 [2022-11-16 12:00:33,489 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:00:33,490 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 [2022-11-16 12:00:33,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:00:33,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:00:33,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:33,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144288826] [2022-11-16 12:00:33,514 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:00:33,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549458655] [2022-11-16 12:00:33,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549458655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:33,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:33,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:00:33,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363251390] [2022-11-16 12:00:33,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:33,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:00:33,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:33,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:00:33,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:00:33,517 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 397 [2022-11-16 12:00:33,519 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) [2022-11-16 12:00:33,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:33,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 397 [2022-11-16 12:00:33,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:34,771 INFO L130 PetriNetUnfolder]: 555/2780 cut-off events. [2022-11-16 12:00:34,771 INFO L131 PetriNetUnfolder]: For 68/94 co-relation queries the response was YES. [2022-11-16 12:00:34,777 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. [2022-11-16 12:00:34,785 INFO L137 encePairwiseOnDemand]: 391/397 looper letters, 123 selfloop transitions, 6 changer transitions 0/381 dead transitions. [2022-11-16 12:00:34,786 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 381 transitions, 1124 flow [2022-11-16 12:00:34,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:00:34,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:00:34,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1611 transitions. [2022-11-16 12:00:34,791 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6763224181360201 [2022-11-16 12:00:34,791 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1611 transitions. [2022-11-16 12:00:34,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1611 transitions. [2022-11-16 12:00:34,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:34,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1611 transitions. [2022-11-16 12:00:34,796 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) [2022-11-16 12:00:34,809 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) [2022-11-16 12:00:34,818 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) [2022-11-16 12:00:34,819 INFO L175 Difference]: Start difference. First operand has 391 places, 382 transitions, 868 flow. Second operand 6 states and 1611 transitions. [2022-11-16 12:00:34,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 381 transitions, 1124 flow [2022-11-16 12:00:34,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 381 transitions, 1118 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:00:34,829 INFO L231 Difference]: Finished difference. Result has 392 places, 381 transitions, 872 flow [2022-11-16 12:00:34,830 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} [2022-11-16 12:00:34,830 INFO L288 CegarLoopForPetriNet]: 373 programPoint places, 19 predicate places. [2022-11-16 12:00:34,831 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 381 transitions, 872 flow [2022-11-16 12:00:34,832 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) [2022-11-16 12:00:34,833 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:34,833 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] [2022-11-16 12:00:34,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-16 12:00:35,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:35,039 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)] === [2022-11-16 12:00:35,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:35,039 INFO L85 PathProgramCache]: Analyzing trace with hash 965358239, now seen corresponding path program 1 times [2022-11-16 12:00:35,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:35,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507181530] [2022-11-16 12:00:35,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:35,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:35,071 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:00:35,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1672880077] [2022-11-16 12:00:35,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:35,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:35,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:00:35,073 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:00:35,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:00:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:35,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 12:00:35,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:00:35,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:00:35,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:00:35,349 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:00:35,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-16 12:00:35,392 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:00:35,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-16 12:00:35,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:00:35,429 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:00:35,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:35,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507181530] [2022-11-16 12:00:35,429 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:00:35,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672880077] [2022-11-16 12:00:35,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672880077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:35,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:35,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:00:35,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485152719] [2022-11-16 12:00:35,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:35,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:00:35,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:35,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:00:35,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:00:35,433 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 397 [2022-11-16 12:00:35,434 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) [2022-11-16 12:00:35,435 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:35,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 397 [2022-11-16 12:00:35,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:36,497 INFO L130 PetriNetUnfolder]: 555/2776 cut-off events. [2022-11-16 12:00:36,497 INFO L131 PetriNetUnfolder]: For 80/106 co-relation queries the response was YES. [2022-11-16 12:00:36,503 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. [2022-11-16 12:00:36,512 INFO L137 encePairwiseOnDemand]: 391/397 looper letters, 125 selfloop transitions, 5 changer transitions 0/380 dead transitions. [2022-11-16 12:00:36,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 380 transitions, 1130 flow [2022-11-16 12:00:36,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:00:36,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:00:36,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1600 transitions. [2022-11-16 12:00:36,517 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6717044500419815 [2022-11-16 12:00:36,517 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1600 transitions. [2022-11-16 12:00:36,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1600 transitions. [2022-11-16 12:00:36,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:36,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1600 transitions. [2022-11-16 12:00:36,523 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) [2022-11-16 12:00:36,534 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) [2022-11-16 12:00:36,535 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) [2022-11-16 12:00:36,536 INFO L175 Difference]: Start difference. First operand has 392 places, 381 transitions, 872 flow. Second operand 6 states and 1600 transitions. [2022-11-16 12:00:36,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 380 transitions, 1130 flow [2022-11-16 12:00:36,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 380 transitions, 1118 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:00:36,550 INFO L231 Difference]: Finished difference. Result has 391 places, 380 transitions, 868 flow [2022-11-16 12:00:36,551 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} [2022-11-16 12:00:36,555 INFO L288 CegarLoopForPetriNet]: 373 programPoint places, 18 predicate places. [2022-11-16 12:00:36,555 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 380 transitions, 868 flow [2022-11-16 12:00:36,556 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) [2022-11-16 12:00:36,556 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:36,556 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] [2022-11-16 12:00:36,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:00:36,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:36,762 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)] === [2022-11-16 12:00:36,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:36,763 INFO L85 PathProgramCache]: Analyzing trace with hash -636670473, now seen corresponding path program 1 times [2022-11-16 12:00:36,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:36,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491960122] [2022-11-16 12:00:36,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:36,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:36,794 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:00:36,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1726732122] [2022-11-16 12:00:36,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:36,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:36,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:00:36,796 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:00:36,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:00:37,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:37,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 12:00:37,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:00:37,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:00:37,094 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 [2022-11-16 12:00:37,115 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:00:37,115 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 [2022-11-16 12:00:37,148 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:00:37,150 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 [2022-11-16 12:00:37,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:00:37,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:00:37,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:37,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491960122] [2022-11-16 12:00:37,178 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:00:37,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726732122] [2022-11-16 12:00:37,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726732122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:37,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:37,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:00:37,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804874206] [2022-11-16 12:00:37,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:37,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:00:37,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:37,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:00:37,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:00:37,183 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 397 [2022-11-16 12:00:37,185 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) [2022-11-16 12:00:37,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:37,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 397 [2022-11-16 12:00:37,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:38,134 INFO L130 PetriNetUnfolder]: 555/2772 cut-off events. [2022-11-16 12:00:38,134 INFO L131 PetriNetUnfolder]: For 74/100 co-relation queries the response was YES. [2022-11-16 12:00:38,141 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. [2022-11-16 12:00:38,151 INFO L137 encePairwiseOnDemand]: 391/397 looper letters, 124 selfloop transitions, 5 changer transitions 0/379 dead transitions. [2022-11-16 12:00:38,151 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 379 transitions, 1124 flow [2022-11-16 12:00:38,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:00:38,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:00:38,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1599 transitions. [2022-11-16 12:00:38,156 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6712846347607053 [2022-11-16 12:00:38,157 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1599 transitions. [2022-11-16 12:00:38,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1599 transitions. [2022-11-16 12:00:38,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:38,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1599 transitions. [2022-11-16 12:00:38,163 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) [2022-11-16 12:00:38,168 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) [2022-11-16 12:00:38,170 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) [2022-11-16 12:00:38,170 INFO L175 Difference]: Start difference. First operand has 391 places, 380 transitions, 868 flow. Second operand 6 states and 1599 transitions. [2022-11-16 12:00:38,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 379 transitions, 1124 flow [2022-11-16 12:00:38,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 379 transitions, 1114 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:00:38,180 INFO L231 Difference]: Finished difference. Result has 390 places, 379 transitions, 866 flow [2022-11-16 12:00:38,181 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} [2022-11-16 12:00:38,182 INFO L288 CegarLoopForPetriNet]: 373 programPoint places, 17 predicate places. [2022-11-16 12:00:38,182 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 379 transitions, 866 flow [2022-11-16 12:00:38,183 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) [2022-11-16 12:00:38,183 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:38,183 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] [2022-11-16 12:00:38,189 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-16 12:00:38,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-16 12:00:38,390 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)] === [2022-11-16 12:00:38,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:38,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1807931593, now seen corresponding path program 1 times [2022-11-16 12:00:38,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:38,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120854982] [2022-11-16 12:00:38,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:38,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:38,428 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:00:38,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1058306793] [2022-11-16 12:00:38,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:38,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:38,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:00:38,431 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:00:38,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:00:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:38,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 12:00:38,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:00:38,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:00:38,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:00:38,802 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:00:38,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-16 12:00:38,839 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:00:38,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-16 12:00:38,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:00:38,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:00:38,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:38,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120854982] [2022-11-16 12:00:38,860 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:00:38,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058306793] [2022-11-16 12:00:38,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058306793] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:38,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:38,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:00:38,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104621467] [2022-11-16 12:00:38,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:38,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:00:38,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:38,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:00:38,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:00:38,865 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 397 [2022-11-16 12:00:38,867 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) [2022-11-16 12:00:38,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:38,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 397 [2022-11-16 12:00:38,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:39,892 INFO L130 PetriNetUnfolder]: 555/2768 cut-off events. [2022-11-16 12:00:39,892 INFO L131 PetriNetUnfolder]: For 74/100 co-relation queries the response was YES. [2022-11-16 12:00:39,902 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. [2022-11-16 12:00:39,912 INFO L137 encePairwiseOnDemand]: 391/397 looper letters, 123 selfloop transitions, 5 changer transitions 0/378 dead transitions. [2022-11-16 12:00:39,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 378 transitions, 1120 flow [2022-11-16 12:00:39,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:00:39,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:00:39,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1603 transitions. [2022-11-16 12:00:39,918 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6729638958858103 [2022-11-16 12:00:39,918 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1603 transitions. [2022-11-16 12:00:39,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1603 transitions. [2022-11-16 12:00:39,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:39,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1603 transitions. [2022-11-16 12:00:39,924 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) [2022-11-16 12:00:39,930 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) [2022-11-16 12:00:39,931 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) [2022-11-16 12:00:39,931 INFO L175 Difference]: Start difference. First operand has 390 places, 379 transitions, 866 flow. Second operand 6 states and 1603 transitions. [2022-11-16 12:00:39,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 378 transitions, 1120 flow [2022-11-16 12:00:39,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 378 transitions, 1110 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:00:39,942 INFO L231 Difference]: Finished difference. Result has 389 places, 378 transitions, 864 flow [2022-11-16 12:00:39,943 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} [2022-11-16 12:00:39,943 INFO L288 CegarLoopForPetriNet]: 373 programPoint places, 16 predicate places. [2022-11-16 12:00:39,944 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 378 transitions, 864 flow [2022-11-16 12:00:39,944 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) [2022-11-16 12:00:39,944 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:39,945 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] [2022-11-16 12:00:39,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:00:40,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:40,151 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)] === [2022-11-16 12:00:40,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:40,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1593506439, now seen corresponding path program 1 times [2022-11-16 12:00:40,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:40,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004210515] [2022-11-16 12:00:40,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:40,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:40,194 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:00:40,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [620838177] [2022-11-16 12:00:40,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:40,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:40,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:00:40,197 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:00:40,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:00:40,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:40,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:00:40,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:00:40,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:00:40,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:00:40,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:00:40,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:40,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004210515] [2022-11-16 12:00:40,825 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:00:40,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620838177] [2022-11-16 12:00:40,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620838177] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:00:40,825 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:00:40,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-16 12:00:40,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606417795] [2022-11-16 12:00:40,826 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:00:40,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:00:40,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:40,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:00:40,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:00:40,832 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 397 [2022-11-16 12:00:40,835 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) [2022-11-16 12:00:40,836 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:40,836 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 397 [2022-11-16 12:00:40,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:41,224 INFO L130 PetriNetUnfolder]: 13/1177 cut-off events. [2022-11-16 12:00:41,224 INFO L131 PetriNetUnfolder]: For 39/41 co-relation queries the response was YES. [2022-11-16 12:00:41,225 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. [2022-11-16 12:00:41,228 INFO L137 encePairwiseOnDemand]: 391/397 looper letters, 12 selfloop transitions, 9 changer transitions 0/388 dead transitions. [2022-11-16 12:00:41,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 388 transitions, 928 flow [2022-11-16 12:00:41,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:00:41,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:00:41,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3317 transitions. [2022-11-16 12:00:41,239 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9283515253288553 [2022-11-16 12:00:41,239 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3317 transitions. [2022-11-16 12:00:41,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3317 transitions. [2022-11-16 12:00:41,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:41,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3317 transitions. [2022-11-16 12:00:41,251 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) [2022-11-16 12:00:41,259 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) [2022-11-16 12:00:41,261 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) [2022-11-16 12:00:41,261 INFO L175 Difference]: Start difference. First operand has 389 places, 378 transitions, 864 flow. Second operand 9 states and 3317 transitions. [2022-11-16 12:00:41,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 388 transitions, 928 flow [2022-11-16 12:00:41,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 388 transitions, 918 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:00:41,271 INFO L231 Difference]: Finished difference. Result has 395 places, 384 transitions, 904 flow [2022-11-16 12:00:41,272 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} [2022-11-16 12:00:41,273 INFO L288 CegarLoopForPetriNet]: 373 programPoint places, 22 predicate places. [2022-11-16 12:00:41,273 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 384 transitions, 904 flow [2022-11-16 12:00:41,274 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) [2022-11-16 12:00:41,274 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:41,275 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] [2022-11-16 12:00:41,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:00:41,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:41,481 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)] === [2022-11-16 12:00:41,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:41,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1830546233, now seen corresponding path program 2 times [2022-11-16 12:00:41,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:41,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864125376] [2022-11-16 12:00:41,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:41,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:41,598 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:00:41,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1988861320] [2022-11-16 12:00:41,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:00:41,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:41,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:00:41,601 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:00:41,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:00:41,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:00:41,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:00:41,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 12:00:41,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:00:41,942 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 [2022-11-16 12:00:41,951 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 [2022-11-16 12:00:41,968 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:00:41,968 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 [2022-11-16 12:00:41,992 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:00:41,992 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 [2022-11-16 12:00:42,015 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2022-11-16 12:00:42,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:00:42,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:42,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864125376] [2022-11-16 12:00:42,015 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:00:42,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988861320] [2022-11-16 12:00:42,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988861320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:42,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:42,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:00:42,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687926096] [2022-11-16 12:00:42,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:42,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:00:42,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:42,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:00:42,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:00:42,020 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 397 [2022-11-16 12:00:42,021 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) [2022-11-16 12:00:42,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:42,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 397 [2022-11-16 12:00:42,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:43,799 INFO L130 PetriNetUnfolder]: 1007/4485 cut-off events. [2022-11-16 12:00:43,799 INFO L131 PetriNetUnfolder]: For 130/182 co-relation queries the response was YES. [2022-11-16 12:00:43,814 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. [2022-11-16 12:00:43,828 INFO L137 encePairwiseOnDemand]: 391/397 looper letters, 168 selfloop transitions, 5 changer transitions 0/421 dead transitions. [2022-11-16 12:00:43,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 421 transitions, 1330 flow [2022-11-16 12:00:43,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:00:43,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:00:43,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1595 transitions. [2022-11-16 12:00:43,834 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6696053736356004 [2022-11-16 12:00:43,834 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1595 transitions. [2022-11-16 12:00:43,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1595 transitions. [2022-11-16 12:00:43,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:43,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1595 transitions. [2022-11-16 12:00:43,839 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) [2022-11-16 12:00:43,843 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) [2022-11-16 12:00:43,845 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) [2022-11-16 12:00:43,845 INFO L175 Difference]: Start difference. First operand has 395 places, 384 transitions, 904 flow. Second operand 6 states and 1595 transitions. [2022-11-16 12:00:43,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 421 transitions, 1330 flow [2022-11-16 12:00:43,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 421 transitions, 1324 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-16 12:00:43,854 INFO L231 Difference]: Finished difference. Result has 399 places, 384 transitions, 912 flow [2022-11-16 12:00:43,855 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} [2022-11-16 12:00:43,856 INFO L288 CegarLoopForPetriNet]: 373 programPoint places, 26 predicate places. [2022-11-16 12:00:43,856 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 384 transitions, 912 flow [2022-11-16 12:00:43,857 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) [2022-11-16 12:00:43,857 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:43,857 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] [2022-11-16 12:00:43,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:00:44,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:44,064 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)] === [2022-11-16 12:00:44,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:44,064 INFO L85 PathProgramCache]: Analyzing trace with hash 565895997, now seen corresponding path program 1 times [2022-11-16 12:00:44,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:44,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544426638] [2022-11-16 12:00:44,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:44,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:44,138 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:00:44,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [301504274] [2022-11-16 12:00:44,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:44,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:44,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:00:44,140 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:00:44,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:00:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:44,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 1319 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:00:44,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:00:45,126 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:00:45,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:00:45,626 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:00:45,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:45,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544426638] [2022-11-16 12:00:45,627 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:00:45,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301504274] [2022-11-16 12:00:45,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301504274] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:00:45,627 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:00:45,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-16 12:00:45,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311069378] [2022-11-16 12:00:45,628 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:00:45,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:00:45,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:45,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:00:45,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:00:45,636 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 397 [2022-11-16 12:00:45,642 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) [2022-11-16 12:00:45,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:45,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 397 [2022-11-16 12:00:45,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:46,749 INFO L130 PetriNetUnfolder]: 19/2189 cut-off events. [2022-11-16 12:00:46,749 INFO L131 PetriNetUnfolder]: For 129/133 co-relation queries the response was YES. [2022-11-16 12:00:46,752 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. [2022-11-16 12:00:46,756 INFO L137 encePairwiseOnDemand]: 391/397 looper letters, 20 selfloop transitions, 21 changer transitions 0/408 dead transitions. [2022-11-16 12:00:46,756 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 408 transitions, 1094 flow [2022-11-16 12:00:46,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:00:46,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 12:00:46,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 7731 transitions. [2022-11-16 12:00:46,770 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9273119827275998 [2022-11-16 12:00:46,770 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 7731 transitions. [2022-11-16 12:00:46,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 7731 transitions. [2022-11-16 12:00:46,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:46,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 7731 transitions. [2022-11-16 12:00:46,791 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) [2022-11-16 12:00:46,804 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) [2022-11-16 12:00:46,807 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) [2022-11-16 12:00:46,807 INFO L175 Difference]: Start difference. First operand has 399 places, 384 transitions, 912 flow. Second operand 21 states and 7731 transitions. [2022-11-16 12:00:46,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 408 transitions, 1094 flow [2022-11-16 12:00:46,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 408 transitions, 1086 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:00:46,817 INFO L231 Difference]: Finished difference. Result has 420 places, 397 transitions, 1034 flow [2022-11-16 12:00:46,818 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} [2022-11-16 12:00:46,819 INFO L288 CegarLoopForPetriNet]: 373 programPoint places, 47 predicate places. [2022-11-16 12:00:46,819 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 397 transitions, 1034 flow [2022-11-16 12:00:46,821 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) [2022-11-16 12:00:46,821 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:46,822 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] [2022-11-16 12:00:46,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:00:47,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 12:00:47,031 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)] === [2022-11-16 12:00:47,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:47,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1319204931, now seen corresponding path program 2 times [2022-11-16 12:00:47,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:47,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010635374] [2022-11-16 12:00:47,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:47,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:47,164 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:00:47,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [434327992] [2022-11-16 12:00:47,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:00:47,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:47,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:00:47,166 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:00:47,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 12:00:47,736 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:00:47,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:00:47,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 12:00:47,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:00:47,783 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 [2022-11-16 12:00:47,792 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 [2022-11-16 12:00:47,817 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:00:47,817 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 [2022-11-16 12:00:47,847 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:00:47,847 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 [2022-11-16 12:00:47,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1919 trivial. 0 not checked. [2022-11-16 12:00:47,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:00:47,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:47,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010635374] [2022-11-16 12:00:47,874 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:00:47,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434327992] [2022-11-16 12:00:47,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434327992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:47,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:47,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:00:47,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069725036] [2022-11-16 12:00:47,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:47,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:00:47,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:47,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:00:47,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:00:47,880 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 397 [2022-11-16 12:00:47,882 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) [2022-11-16 12:00:47,882 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:47,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 397 [2022-11-16 12:00:47,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:52,324 INFO L130 PetriNetUnfolder]: 1383/6597 cut-off events. [2022-11-16 12:00:52,324 INFO L131 PetriNetUnfolder]: For 320/372 co-relation queries the response was YES. [2022-11-16 12:00:52,342 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. [2022-11-16 12:00:52,356 INFO L137 encePairwiseOnDemand]: 391/397 looper letters, 168 selfloop transitions, 5 changer transitions 0/434 dead transitions. [2022-11-16 12:00:52,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 434 transitions, 1462 flow [2022-11-16 12:00:52,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:00:52,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:00:52,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1594 transitions. [2022-11-16 12:00:52,363 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6691855583543241 [2022-11-16 12:00:52,363 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1594 transitions. [2022-11-16 12:00:52,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1594 transitions. [2022-11-16 12:00:52,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:52,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1594 transitions. [2022-11-16 12:00:52,370 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) [2022-11-16 12:00:52,374 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) [2022-11-16 12:00:52,374 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) [2022-11-16 12:00:52,375 INFO L175 Difference]: Start difference. First operand has 420 places, 397 transitions, 1034 flow. Second operand 6 states and 1594 transitions. [2022-11-16 12:00:52,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 434 transitions, 1462 flow [2022-11-16 12:00:52,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 434 transitions, 1438 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-11-16 12:00:52,384 INFO L231 Difference]: Finished difference. Result has 419 places, 397 transitions, 1026 flow [2022-11-16 12:00:52,385 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} [2022-11-16 12:00:52,386 INFO L288 CegarLoopForPetriNet]: 373 programPoint places, 46 predicate places. [2022-11-16 12:00:52,386 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 397 transitions, 1026 flow [2022-11-16 12:00:52,387 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) [2022-11-16 12:00:52,387 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:52,387 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] [2022-11-16 12:00:52,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:00:52,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 12:00:52,593 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)] === [2022-11-16 12:00:52,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:52,594 INFO L85 PathProgramCache]: Analyzing trace with hash -13817340, now seen corresponding path program 1 times [2022-11-16 12:00:52,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:52,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593087267] [2022-11-16 12:00:52,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:52,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:52,737 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:00:52,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [658022366] [2022-11-16 12:00:52,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:52,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:52,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:00:52,739 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:00:52,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 12:00:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:53,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 2859 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:00:53,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:00:53,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1919 trivial. 0 not checked. [2022-11-16 12:00:53,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:00:53,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:53,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593087267] [2022-11-16 12:00:53,941 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:00:53,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658022366] [2022-11-16 12:00:53,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658022366] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:53,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:53,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:00:53,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610914083] [2022-11-16 12:00:53,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:53,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:00:53,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:53,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:00:53,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:00:53,945 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 367 out of 397 [2022-11-16 12:00:53,946 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) [2022-11-16 12:00:53,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:53,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 367 of 397 [2022-11-16 12:00:53,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:54,942 INFO L130 PetriNetUnfolder]: 19/2361 cut-off events. [2022-11-16 12:00:54,943 INFO L131 PetriNetUnfolder]: For 203/269 co-relation queries the response was YES. [2022-11-16 12:00:54,947 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. [2022-11-16 12:00:54,951 INFO L137 encePairwiseOnDemand]: 394/397 looper letters, 9 selfloop transitions, 2 changer transitions 0/399 dead transitions. [2022-11-16 12:00:54,951 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 399 transitions, 1052 flow [2022-11-16 12:00:54,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:00:54,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:00:54,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1113 transitions. [2022-11-16 12:00:54,955 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9345088161209067 [2022-11-16 12:00:54,955 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1113 transitions. [2022-11-16 12:00:54,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1113 transitions. [2022-11-16 12:00:54,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:54,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1113 transitions. [2022-11-16 12:00:54,959 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) [2022-11-16 12:00:54,961 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) [2022-11-16 12:00:54,962 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) [2022-11-16 12:00:54,962 INFO L175 Difference]: Start difference. First operand has 419 places, 397 transitions, 1026 flow. Second operand 3 states and 1113 transitions. [2022-11-16 12:00:54,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 399 transitions, 1052 flow [2022-11-16 12:00:54,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 399 transitions, 1042 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-11-16 12:00:54,975 INFO L231 Difference]: Finished difference. Result has 418 places, 397 transitions, 1024 flow [2022-11-16 12:00:54,976 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} [2022-11-16 12:00:54,976 INFO L288 CegarLoopForPetriNet]: 373 programPoint places, 45 predicate places. [2022-11-16 12:00:54,976 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 397 transitions, 1024 flow [2022-11-16 12:00:54,977 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) [2022-11-16 12:00:54,977 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:54,978 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] [2022-11-16 12:00:55,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:00:55,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 12:00:55,190 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)] === [2022-11-16 12:00:55,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:55,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1787747428, now seen corresponding path program 1 times [2022-11-16 12:00:55,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:55,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825480629] [2022-11-16 12:00:55,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:55,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:55,357 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:00:55,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [971385987] [2022-11-16 12:00:55,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:55,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:55,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:00:55,361 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:00:55,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 12:00:56,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:56,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 2884 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:00:56,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:00:57,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1924 backedges. 1 proven. 1918 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:00:57,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:00:59,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1924 backedges. 1 proven. 1918 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:00:59,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:59,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825480629] [2022-11-16 12:00:59,016 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:00:59,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971385987] [2022-11-16 12:00:59,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971385987] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:00:59,016 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:00:59,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-16 12:00:59,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924009370] [2022-11-16 12:00:59,017 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:00:59,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 12:00:59,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:59,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 12:00:59,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2022-11-16 12:00:59,030 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 397 [2022-11-16 12:00:59,038 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) [2022-11-16 12:00:59,039 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:59,039 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 397 [2022-11-16 12:00:59,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:01:01,920 INFO L130 PetriNetUnfolder]: 19/3825 cut-off events. [2022-11-16 12:01:01,920 INFO L131 PetriNetUnfolder]: For 720/726 co-relation queries the response was YES. [2022-11-16 12:01:01,925 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. [2022-11-16 12:01:01,929 INFO L137 encePairwiseOnDemand]: 391/397 looper letters, 36 selfloop transitions, 45 changer transitions 0/448 dead transitions. [2022-11-16 12:01:01,929 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 448 transitions, 1486 flow [2022-11-16 12:01:01,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-16 12:01:01,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-16 12:01:01,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 16559 transitions. [2022-11-16 12:01:01,946 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9268961656870977 [2022-11-16 12:01:01,946 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 16559 transitions. [2022-11-16 12:01:01,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 16559 transitions. [2022-11-16 12:01:01,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:01:01,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 16559 transitions. [2022-11-16 12:01:01,974 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) [2022-11-16 12:01:01,996 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) [2022-11-16 12:01:02,001 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) [2022-11-16 12:01:02,001 INFO L175 Difference]: Start difference. First operand has 418 places, 397 transitions, 1024 flow. Second operand 45 states and 16559 transitions. [2022-11-16 12:01:02,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 448 transitions, 1486 flow [2022-11-16 12:01:02,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 448 transitions, 1482 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:01:02,015 INFO L231 Difference]: Finished difference. Result has 469 places, 422 transitions, 1322 flow [2022-11-16 12:01:02,016 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} [2022-11-16 12:01:02,016 INFO L288 CegarLoopForPetriNet]: 373 programPoint places, 96 predicate places. [2022-11-16 12:01:02,017 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 422 transitions, 1322 flow [2022-11-16 12:01:02,019 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) [2022-11-16 12:01:02,019 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:01:02,020 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] [2022-11-16 12:01:02,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:02,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 12:01:02,235 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)] === [2022-11-16 12:01:02,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:02,236 INFO L85 PathProgramCache]: Analyzing trace with hash 555953308, now seen corresponding path program 2 times [2022-11-16 12:01:02,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:02,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412267289] [2022-11-16 12:01:02,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:02,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:02,503 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:01:02,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1567009604] [2022-11-16 12:01:02,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:01:02,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:01:02,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:02,504 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:01:02,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 12:01:04,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:01:04,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:01:04,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 5836 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-16 12:01:04,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:01:06,970 INFO L134 CoverageAnalysis]: Checked inductivity of 9576 backedges. 1 proven. 9570 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:01:06,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:01:09,669 INFO L134 CoverageAnalysis]: Checked inductivity of 9576 backedges. 1 proven. 9570 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:01:09,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:09,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412267289] [2022-11-16 12:01:09,669 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:01:09,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567009604] [2022-11-16 12:01:09,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567009604] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:01:09,670 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:01:09,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2022-11-16 12:01:09,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609044188] [2022-11-16 12:01:09,671 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:01:09,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-16 12:01:09,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:09,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-16 12:01:09,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2022-11-16 12:01:09,703 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 397 [2022-11-16 12:01:09,739 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) [2022-11-16 12:01:09,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:01:09,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 397 [2022-11-16 12:01:09,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:01:18,320 INFO L130 PetriNetUnfolder]: 19/6570 cut-off events. [2022-11-16 12:01:18,321 INFO L131 PetriNetUnfolder]: For 4407/4413 co-relation queries the response was YES. [2022-11-16 12:01:18,331 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. [2022-11-16 12:01:18,339 INFO L137 encePairwiseOnDemand]: 391/397 looper letters, 66 selfloop transitions, 90 changer transitions 0/523 dead transitions. [2022-11-16 12:01:18,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 558 places, 523 transitions, 2438 flow [2022-11-16 12:01:18,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-16 12:01:18,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-11-16 12:01:18,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 33111 transitions. [2022-11-16 12:01:18,373 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9267002518891687 [2022-11-16 12:01:18,374 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 33111 transitions. [2022-11-16 12:01:18,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 33111 transitions. [2022-11-16 12:01:18,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:01:18,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 33111 transitions. [2022-11-16 12:01:18,436 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) [2022-11-16 12:01:18,468 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) [2022-11-16 12:01:18,476 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) [2022-11-16 12:01:18,476 INFO L175 Difference]: Start difference. First operand has 469 places, 422 transitions, 1322 flow. Second operand 90 states and 33111 transitions. [2022-11-16 12:01:18,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 558 places, 523 transitions, 2438 flow [2022-11-16 12:01:18,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 523 transitions, 2352 flow, removed 25 selfloop flow, removed 18 redundant places. [2022-11-16 12:01:18,503 INFO L231 Difference]: Finished difference. Result has 556 places, 468 transitions, 1920 flow [2022-11-16 12:01:18,504 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} [2022-11-16 12:01:18,505 INFO L288 CegarLoopForPetriNet]: 373 programPoint places, 183 predicate places. [2022-11-16 12:01:18,505 INFO L495 AbstractCegarLoop]: Abstraction has has 556 places, 468 transitions, 1920 flow [2022-11-16 12:01:18,508 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) [2022-11-16 12:01:18,508 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:01:18,509 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] [2022-11-16 12:01:18,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:18,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 12:01:18,728 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)] === [2022-11-16 12:01:18,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:18,728 INFO L85 PathProgramCache]: Analyzing trace with hash 417763890, now seen corresponding path program 3 times [2022-11-16 12:01:18,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:18,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920934261] [2022-11-16 12:01:18,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:18,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:19,274 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:01:19,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1758908874] [2022-11-16 12:01:19,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:01:19,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:01:19,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:19,279 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:01:19,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 12:01:20,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 12:01:20,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:01:21,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:01:21,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:01:25,954 INFO L134 CoverageAnalysis]: Checked inductivity of 39621 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39620 trivial. 0 not checked. [2022-11-16 12:01:25,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:01:32,403 INFO L134 CoverageAnalysis]: Checked inductivity of 39621 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39620 trivial. 0 not checked. [2022-11-16 12:01:32,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:32,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920934261] [2022-11-16 12:01:32,404 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:01:32,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758908874] [2022-11-16 12:01:32,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758908874] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:01:32,404 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:01:32,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-16 12:01:32,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613073586] [2022-11-16 12:01:32,406 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:01:32,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:01:32,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:32,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:01:32,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:01:32,414 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 363 out of 397 [2022-11-16 12:01:32,417 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) [2022-11-16 12:01:32,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:01:32,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 363 of 397 [2022-11-16 12:01:32,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:01:44,475 INFO L130 PetriNetUnfolder]: 12/8830 cut-off events. [2022-11-16 12:01:44,475 INFO L131 PetriNetUnfolder]: For 3447/3450 co-relation queries the response was YES. [2022-11-16 12:01:44,500 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. [2022-11-16 12:01:44,511 INFO L137 encePairwiseOnDemand]: 391/397 looper letters, 23 selfloop transitions, 9 changer transitions 0/484 dead transitions. [2022-11-16 12:01:44,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 484 transitions, 2026 flow [2022-11-16 12:01:44,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:01:44,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:01:44,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3299 transitions. [2022-11-16 12:01:44,516 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9233137419535404 [2022-11-16 12:01:44,516 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3299 transitions. [2022-11-16 12:01:44,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3299 transitions. [2022-11-16 12:01:44,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:01:44,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3299 transitions. [2022-11-16 12:01:44,523 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) [2022-11-16 12:01:44,527 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) [2022-11-16 12:01:44,528 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) [2022-11-16 12:01:44,528 INFO L175 Difference]: Start difference. First operand has 556 places, 468 transitions, 1920 flow. Second operand 9 states and 3299 transitions. [2022-11-16 12:01:44,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 484 transitions, 2026 flow [2022-11-16 12:01:44,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 484 transitions, 1908 flow, removed 17 selfloop flow, removed 42 redundant places. [2022-11-16 12:01:44,574 INFO L231 Difference]: Finished difference. Result has 525 places, 474 transitions, 1852 flow [2022-11-16 12:01:44,575 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} [2022-11-16 12:01:44,576 INFO L288 CegarLoopForPetriNet]: 373 programPoint places, 152 predicate places. [2022-11-16 12:01:44,576 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 474 transitions, 1852 flow [2022-11-16 12:01:44,576 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) [2022-11-16 12:01:44,576 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:01:44,577 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] [2022-11-16 12:01:44,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:44,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 12:01:44,786 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)] === [2022-11-16 12:01:44,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:44,787 INFO L85 PathProgramCache]: Analyzing trace with hash -2061337793, now seen corresponding path program 1 times [2022-11-16 12:01:44,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:44,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418579676] [2022-11-16 12:01:44,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:44,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:45,304 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:01:45,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1732796861] [2022-11-16 12:01:45,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:45,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:01:45,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:45,311 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:01:45,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 12:01:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:49,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 11530 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 12:01:49,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:01:49,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:01:49,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:01:49,159 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:01:49,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-16 12:01:49,190 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:01:49,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-16 12:01:49,390 INFO L134 CoverageAnalysis]: Checked inductivity of 41200 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 41080 trivial. 0 not checked. [2022-11-16 12:01:49,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:01:49,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:49,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418579676] [2022-11-16 12:01:49,392 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:01:49,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732796861] [2022-11-16 12:01:49,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732796861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:01:49,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:01:49,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:01:49,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882295454] [2022-11-16 12:01:49,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:01:49,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:01:49,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:49,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:01:49,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:01:49,398 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 397 [2022-11-16 12:01:49,399 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) [2022-11-16 12:01:49,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:01:49,399 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 397 [2022-11-16 12:01:49,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:02:16,742 INFO L130 PetriNetUnfolder]: 602/10806 cut-off events. [2022-11-16 12:02:16,743 INFO L131 PetriNetUnfolder]: For 4019/4045 co-relation queries the response was YES. [2022-11-16 12:02:16,784 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. [2022-11-16 12:02:16,801 INFO L137 encePairwiseOnDemand]: 391/397 looper letters, 115 selfloop transitions, 10 changer transitions 0/473 dead transitions. [2022-11-16 12:02:16,801 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 473 transitions, 2098 flow [2022-11-16 12:02:16,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:02:16,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:02:16,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1610 transitions. [2022-11-16 12:02:16,804 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6759026028547439 [2022-11-16 12:02:16,804 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1610 transitions. [2022-11-16 12:02:16,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1610 transitions. [2022-11-16 12:02:16,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:02:16,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1610 transitions. [2022-11-16 12:02:16,808 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) [2022-11-16 12:02:16,810 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) [2022-11-16 12:02:16,811 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) [2022-11-16 12:02:16,811 INFO L175 Difference]: Start difference. First operand has 525 places, 474 transitions, 1852 flow. Second operand 6 states and 1610 transitions. [2022-11-16 12:02:16,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 473 transitions, 2098 flow [2022-11-16 12:02:16,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 473 transitions, 2094 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-11-16 12:02:16,858 INFO L231 Difference]: Finished difference. Result has 529 places, 473 transitions, 1864 flow [2022-11-16 12:02:16,859 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} [2022-11-16 12:02:16,859 INFO L288 CegarLoopForPetriNet]: 373 programPoint places, 156 predicate places. [2022-11-16 12:02:16,859 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 473 transitions, 1864 flow [2022-11-16 12:02:16,860 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) [2022-11-16 12:02:16,860 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:02:16,862 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] [2022-11-16 12:02:16,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 12:02:17,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:02:17,091 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)] === [2022-11-16 12:02:17,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:17,093 INFO L85 PathProgramCache]: Analyzing trace with hash -684310136, now seen corresponding path program 4 times [2022-11-16 12:02:17,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:17,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932339435] [2022-11-16 12:02:17,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:17,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:18,399 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:02:18,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1404166381] [2022-11-16 12:02:18,400 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 12:02:18,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:02:18,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:02:18,407 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:02:18,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7abe29-a2b9-453a-b556-61e54b00d3e0/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 12:02:27,620 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 12:02:27,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:02:27,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 32490 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:02:28,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:02:43,895 INFO L134 CoverageAnalysis]: Checked inductivity of 364817 backedges. 0 proven. 245967 refuted. 0 times theorem prover too weak. 118850 trivial. 0 not checked. [2022-11-16 12:02:43,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:03:00,486 INFO L134 CoverageAnalysis]: Checked inductivity of 364817 backedges. 0 proven. 245967 refuted. 0 times theorem prover too weak. 118850 trivial. 0 not checked. [2022-11-16 12:03:00,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:03:00,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932339435] [2022-11-16 12:03:00,486 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:03:00,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404166381] [2022-11-16 12:03:00,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404166381] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:03:00,487 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:03:00,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-16 12:03:00,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186444853] [2022-11-16 12:03:00,491 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:03:00,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:03:00,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:03:00,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:03:00,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:03:00,499 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 363 out of 397 [2022-11-16 12:03:00,502 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) [2022-11-16 12:03:00,502 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:03:00,502 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 363 of 397 [2022-11-16 12:03:00,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand