./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 085e9170c725dbfce47ad23ff96af1e2e4188372955794675158fde45968fe8a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 18:50:04,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:50:04,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:50:04,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:50:04,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:50:04,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:50:04,259 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:50:04,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:50:04,266 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:50:04,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:50:04,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:50:04,277 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:50:04,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:50:04,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:50:04,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:50:04,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:50:04,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:50:04,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:50:04,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:50:04,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:50:04,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:50:04,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:50:04,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:50:04,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:50:04,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:50:04,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:50:04,311 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:50:04,313 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:50:04,313 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:50:04,314 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:50:04,315 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:50:04,317 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:50:04,319 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:50:04,321 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:50:04,323 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:50:04,323 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:50:04,324 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:50:04,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:50:04,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:50:04,325 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:50:04,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:50:04,327 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-18 18:50:04,373 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:50:04,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:50:04,374 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:50:04,374 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:50:04,375 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:50:04,375 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:50:04,376 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:50:04,377 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:50:04,377 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:50:04,377 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:50:04,378 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:50:04,379 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:50:04,379 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:50:04,379 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:50:04,379 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:50:04,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:50:04,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:50:04,380 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:50:04,380 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-18 18:50:04,380 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:50:04,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:50:04,381 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:50:04,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:50:04,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:50:04,382 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:50:04,382 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:50:04,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:50:04,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:50:04,383 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:50:04,383 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:50:04,383 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:50:04,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:50:04,384 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:50:04,384 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:50:04,384 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:50:04,385 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_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 085e9170c725dbfce47ad23ff96af1e2e4188372955794675158fde45968fe8a [2022-11-18 18:50:04,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:50:04,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:50:04,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:50:04,716 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:50:04,717 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:50:04,719 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i [2022-11-18 18:50:04,812 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/data/e75024c1a/89f2a8fff55247eeb87d46597db098b2/FLAG496353630 [2022-11-18 18:50:05,492 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:50:05,493 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i [2022-11-18 18:50:05,522 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/data/e75024c1a/89f2a8fff55247eeb87d46597db098b2/FLAG496353630 [2022-11-18 18:50:05,673 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/data/e75024c1a/89f2a8fff55247eeb87d46597db098b2 [2022-11-18 18:50:05,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:50:05,678 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:50:05,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:50:05,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:50:05,696 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:50:05,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:50:05" (1/1) ... [2022-11-18 18:50:05,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a406c42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:50:05, skipping insertion in model container [2022-11-18 18:50:05,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:50:05" (1/1) ... [2022-11-18 18:50:05,710 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:50:05,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:50:06,353 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:50:06,358 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:50:06,362 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:50:06,366 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:50:06,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:50:06,450 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:50:06,513 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:50:06,523 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:50:06,526 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:50:06,528 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:50:06,561 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:50:06,638 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:50:06,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:50:06 WrapperNode [2022-11-18 18:50:06,643 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:50:06,644 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:50:06,644 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:50:06,644 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:50:06,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:50:06" (1/1) ... [2022-11-18 18:50:06,690 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:50:06" (1/1) ... [2022-11-18 18:50:06,749 INFO L138 Inliner]: procedures = 273, calls = 38, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 256 [2022-11-18 18:50:06,750 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:50:06,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:50:06,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:50:06,751 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:50:06,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:50:06" (1/1) ... [2022-11-18 18:50:06,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:50:06" (1/1) ... [2022-11-18 18:50:06,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:50:06" (1/1) ... [2022-11-18 18:50:06,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:50:06" (1/1) ... [2022-11-18 18:50:06,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:50:06" (1/1) ... [2022-11-18 18:50:06,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:50:06" (1/1) ... [2022-11-18 18:50:06,800 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:50:06" (1/1) ... [2022-11-18 18:50:06,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:50:06" (1/1) ... [2022-11-18 18:50:06,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:50:06,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:50:06,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:50:06,809 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:50:06,810 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:50:06" (1/1) ... [2022-11-18 18:50:06,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:50:06,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:06,845 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:50:06,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:50:06,905 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-18 18:50:06,906 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-18 18:50:06,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:50:06,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 18:50:06,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:50:06,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:50:06,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:50:06,907 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 18:50:06,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 18:50:06,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:50:06,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 18:50:06,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:50:06,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:50:06,910 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 18:50:07,136 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:50:07,138 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:50:07,765 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:50:07,777 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:50:07,777 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 18:50:07,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:50:07 BoogieIcfgContainer [2022-11-18 18:50:07,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:50:07,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:50:07,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:50:07,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:50:07,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:50:05" (1/3) ... [2022-11-18 18:50:07,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da308ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:50:07, skipping insertion in model container [2022-11-18 18:50:07,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:50:06" (2/3) ... [2022-11-18 18:50:07,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da308ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:50:07, skipping insertion in model container [2022-11-18 18:50:07,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:50:07" (3/3) ... [2022-11-18 18:50:07,801 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_24-evilcollapse_nr.i [2022-11-18 18:50:07,810 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:50:07,822 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:50:07,822 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-18 18:50:07,822 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:50:07,985 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 18:50:08,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 363 places, 373 transitions, 756 flow [2022-11-18 18:50:08,182 INFO L130 PetriNetUnfolder]: 17/371 cut-off events. [2022-11-18 18:50:08,182 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:50:08,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 378 conditions, 371 events. 17/371 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 786 event pairs, 0 based on Foata normal form. 0/334 useless extension candidates. Maximal degree in co-relation 294. Up to 2 conditions per place. [2022-11-18 18:50:08,194 INFO L82 GeneralOperation]: Start removeDead. Operand has 363 places, 373 transitions, 756 flow [2022-11-18 18:50:08,202 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 361 places, 371 transitions, 748 flow [2022-11-18 18:50:08,213 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:50:08,224 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;@248196f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:50:08,224 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-11-18 18:50:08,251 INFO L130 PetriNetUnfolder]: 1/52 cut-off events. [2022-11-18 18:50:08,251 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:50:08,252 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:08,253 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] [2022-11-18 18:50:08,254 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 18:50:08,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:08,261 INFO L85 PathProgramCache]: Analyzing trace with hash 820184857, now seen corresponding path program 1 times [2022-11-18 18:50:08,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:08,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895544360] [2022-11-18 18:50:08,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:08,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:08,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:09,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:09,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:09,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895544360] [2022-11-18 18:50:09,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895544360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:09,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:09,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:50:09,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202361122] [2022-11-18 18:50:09,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:09,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:50:09,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:09,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:50:09,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:50:09,397 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 373 [2022-11-18 18:50:09,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 371 transitions, 748 flow. Second operand has 6 states, 6 states have (on average 230.5) internal successors, (1383), 6 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:09,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:09,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 373 [2022-11-18 18:50:09,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:10,830 INFO L130 PetriNetUnfolder]: 745/2684 cut-off events. [2022-11-18 18:50:10,831 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-11-18 18:50:10,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4200 conditions, 2684 events. 745/2684 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 17476 event pairs, 600 based on Foata normal form. 249/2557 useless extension candidates. Maximal degree in co-relation 3898. Up to 1451 conditions per place. [2022-11-18 18:50:10,861 INFO L137 encePairwiseOnDemand]: 351/373 looper letters, 122 selfloop transitions, 10 changer transitions 2/359 dead transitions. [2022-11-18 18:50:10,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 359 transitions, 988 flow [2022-11-18 18:50:10,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:50:10,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:50:10,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1518 transitions. [2022-11-18 18:50:10,886 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.67828418230563 [2022-11-18 18:50:10,887 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1518 transitions. [2022-11-18 18:50:10,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1518 transitions. [2022-11-18 18:50:10,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:10,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1518 transitions. [2022-11-18 18:50:10,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:10,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:10,917 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:10,920 INFO L175 Difference]: Start difference. First operand has 361 places, 371 transitions, 748 flow. Second operand 6 states and 1518 transitions. [2022-11-18 18:50:10,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 359 transitions, 988 flow [2022-11-18 18:50:10,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 359 transitions, 986 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:50:10,941 INFO L231 Difference]: Finished difference. Result has 362 places, 357 transitions, 738 flow [2022-11-18 18:50:10,944 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=738, PETRI_PLACES=362, PETRI_TRANSITIONS=357} [2022-11-18 18:50:10,949 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, 1 predicate places. [2022-11-18 18:50:10,949 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 357 transitions, 738 flow [2022-11-18 18:50:10,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 230.5) internal successors, (1383), 6 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:10,951 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:10,951 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:10,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:50:10,951 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 18:50:10,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:10,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1529770307, now seen corresponding path program 1 times [2022-11-18 18:50:10,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:10,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781011057] [2022-11-18 18:50:10,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:10,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:11,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:11,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:11,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781011057] [2022-11-18 18:50:11,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781011057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:11,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:11,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:50:11,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716252394] [2022-11-18 18:50:11,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:11,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:50:11,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:11,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:50:11,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:50:11,478 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 373 [2022-11-18 18:50:11,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 357 transitions, 738 flow. Second operand has 6 states, 6 states have (on average 231.5) internal successors, (1389), 6 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:11,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:11,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 373 [2022-11-18 18:50:11,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:12,603 INFO L130 PetriNetUnfolder]: 745/2680 cut-off events. [2022-11-18 18:50:12,603 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 18:50:12,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4203 conditions, 2680 events. 745/2680 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 17412 event pairs, 600 based on Foata normal form. 0/2308 useless extension candidates. Maximal degree in co-relation 4007. Up to 1449 conditions per place. [2022-11-18 18:50:12,634 INFO L137 encePairwiseOnDemand]: 361/373 looper letters, 120 selfloop transitions, 10 changer transitions 0/355 dead transitions. [2022-11-18 18:50:12,634 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 355 transitions, 994 flow [2022-11-18 18:50:12,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:50:12,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:50:12,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1506 transitions. [2022-11-18 18:50:12,649 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6729222520107239 [2022-11-18 18:50:12,649 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1506 transitions. [2022-11-18 18:50:12,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1506 transitions. [2022-11-18 18:50:12,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:12,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1506 transitions. [2022-11-18 18:50:12,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:12,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:12,662 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:12,662 INFO L175 Difference]: Start difference. First operand has 362 places, 357 transitions, 738 flow. Second operand 6 states and 1506 transitions. [2022-11-18 18:50:12,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 355 transitions, 994 flow [2022-11-18 18:50:12,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 355 transitions, 974 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:50:12,671 INFO L231 Difference]: Finished difference. Result has 358 places, 355 transitions, 734 flow [2022-11-18 18:50:12,672 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=734, PETRI_PLACES=358, PETRI_TRANSITIONS=355} [2022-11-18 18:50:12,673 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, -3 predicate places. [2022-11-18 18:50:12,673 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 355 transitions, 734 flow [2022-11-18 18:50:12,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 231.5) internal successors, (1389), 6 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:12,675 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:12,675 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:12,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:50:12,676 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 18:50:12,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:12,676 INFO L85 PathProgramCache]: Analyzing trace with hash -284757776, now seen corresponding path program 1 times [2022-11-18 18:50:12,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:12,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744166982] [2022-11-18 18:50:12,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:12,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:12,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:12,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:12,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744166982] [2022-11-18 18:50:12,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744166982] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:12,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:12,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:50:12,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441943403] [2022-11-18 18:50:12,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:12,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:50:12,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:12,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:50:12,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:50:12,752 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 351 out of 373 [2022-11-18 18:50:12,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 355 transitions, 734 flow. Second operand has 3 states, 3 states have (on average 352.0) internal successors, (1056), 3 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:12,754 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:12,754 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 351 of 373 [2022-11-18 18:50:12,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:12,860 INFO L130 PetriNetUnfolder]: 8/479 cut-off events. [2022-11-18 18:50:12,860 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:50:12,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 479 events. 8/479 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1313 event pairs, 0 based on Foata normal form. 0/447 useless extension candidates. Maximal degree in co-relation 278. Up to 13 conditions per place. [2022-11-18 18:50:12,864 INFO L137 encePairwiseOnDemand]: 370/373 looper letters, 17 selfloop transitions, 2 changer transitions 0/362 dead transitions. [2022-11-18 18:50:12,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 362 transitions, 786 flow [2022-11-18 18:50:12,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:50:12,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:50:12,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1073 transitions. [2022-11-18 18:50:12,870 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9588918677390528 [2022-11-18 18:50:12,871 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1073 transitions. [2022-11-18 18:50:12,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1073 transitions. [2022-11-18 18:50:12,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:12,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1073 transitions. [2022-11-18 18:50:12,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 357.6666666666667) internal successors, (1073), 3 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:12,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:12,879 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:12,879 INFO L175 Difference]: Start difference. First operand has 358 places, 355 transitions, 734 flow. Second operand 3 states and 1073 transitions. [2022-11-18 18:50:12,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 362 transitions, 786 flow [2022-11-18 18:50:12,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 362 transitions, 766 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:50:12,934 INFO L231 Difference]: Finished difference. Result has 356 places, 356 transitions, 726 flow [2022-11-18 18:50:12,935 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=726, PETRI_PLACES=356, PETRI_TRANSITIONS=356} [2022-11-18 18:50:12,936 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, -5 predicate places. [2022-11-18 18:50:12,936 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 356 transitions, 726 flow [2022-11-18 18:50:12,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 352.0) internal successors, (1056), 3 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:12,937 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:12,937 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] [2022-11-18 18:50:12,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:50:12,937 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 18:50:12,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:12,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1755133368, now seen corresponding path program 1 times [2022-11-18 18:50:12,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:12,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993992889] [2022-11-18 18:50:12,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:12,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:12,982 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:50:12,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [606469980] [2022-11-18 18:50:12,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:12,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:12,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:12,989 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:13,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:50:13,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:13,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 18:50:13,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:13,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 18:50:13,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:50:13,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:50:13,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:50:13,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:50:13,373 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:50:13,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-18 18:50:13,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:50:13,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:50:13,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:50:13,424 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:50:13,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-18 18:50:13,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:13,463 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:50:13,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:13,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993992889] [2022-11-18 18:50:13,464 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:50:13,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606469980] [2022-11-18 18:50:13,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606469980] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:13,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:13,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:50:13,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567544673] [2022-11-18 18:50:13,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:13,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:50:13,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:13,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:50:13,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:50:13,475 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 373 [2022-11-18 18:50:13,478 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 356 transitions, 726 flow. Second operand has 8 states, 8 states have (on average 234.625) internal successors, (1877), 8 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:13,478 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:13,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 373 [2022-11-18 18:50:13,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:15,384 INFO L130 PetriNetUnfolder]: 1491/5379 cut-off events. [2022-11-18 18:50:15,385 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 18:50:15,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8416 conditions, 5379 events. 1491/5379 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 36240 event pairs, 1200 based on Foata normal form. 0/4641 useless extension candidates. Maximal degree in co-relation 4178. Up to 1492 conditions per place. [2022-11-18 18:50:15,430 INFO L137 encePairwiseOnDemand]: 363/373 looper letters, 190 selfloop transitions, 9 changer transitions 0/428 dead transitions. [2022-11-18 18:50:15,430 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 428 transitions, 1272 flow [2022-11-18 18:50:15,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:50:15,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 18:50:15,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2288 transitions. [2022-11-18 18:50:15,440 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6815609174858505 [2022-11-18 18:50:15,441 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2288 transitions. [2022-11-18 18:50:15,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2288 transitions. [2022-11-18 18:50:15,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:15,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2288 transitions. [2022-11-18 18:50:15,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 254.22222222222223) internal successors, (2288), 9 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:15,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 373.0) internal successors, (3730), 10 states have internal predecessors, (3730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:15,512 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 373.0) internal successors, (3730), 10 states have internal predecessors, (3730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:15,512 INFO L175 Difference]: Start difference. First operand has 356 places, 356 transitions, 726 flow. Second operand 9 states and 2288 transitions. [2022-11-18 18:50:15,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 428 transitions, 1272 flow [2022-11-18 18:50:15,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 428 transitions, 1270 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:50:15,522 INFO L231 Difference]: Finished difference. Result has 363 places, 356 transitions, 748 flow [2022-11-18 18:50:15,522 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=748, PETRI_PLACES=363, PETRI_TRANSITIONS=356} [2022-11-18 18:50:15,524 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, 2 predicate places. [2022-11-18 18:50:15,524 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 356 transitions, 748 flow [2022-11-18 18:50:15,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 234.625) internal successors, (1877), 8 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:15,525 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:15,526 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:15,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:50:15,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:15,735 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 18:50:15,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:15,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1018784656, now seen corresponding path program 1 times [2022-11-18 18:50:15,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:15,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094024452] [2022-11-18 18:50:15,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:15,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:15,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:15,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:15,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:15,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094024452] [2022-11-18 18:50:15,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094024452] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:15,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:15,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:50:15,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303397538] [2022-11-18 18:50:15,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:15,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:50:15,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:15,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:50:15,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:50:15,830 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 354 out of 373 [2022-11-18 18:50:15,831 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 356 transitions, 748 flow. Second operand has 3 states, 3 states have (on average 355.0) internal successors, (1065), 3 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:15,831 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:15,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 354 of 373 [2022-11-18 18:50:15,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:15,956 INFO L130 PetriNetUnfolder]: 8/667 cut-off events. [2022-11-18 18:50:15,956 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 18:50:15,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 746 conditions, 667 events. 8/667 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1297 event pairs, 0 based on Foata normal form. 0/628 useless extension candidates. Maximal degree in co-relation 342. Up to 16 conditions per place. [2022-11-18 18:50:15,960 INFO L137 encePairwiseOnDemand]: 370/373 looper letters, 11 selfloop transitions, 2 changer transitions 0/360 dead transitions. [2022-11-18 18:50:15,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 360 transitions, 782 flow [2022-11-18 18:50:15,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:50:15,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:50:15,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1076 transitions. [2022-11-18 18:50:15,964 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9615728328865059 [2022-11-18 18:50:15,964 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1076 transitions. [2022-11-18 18:50:15,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1076 transitions. [2022-11-18 18:50:15,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:15,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1076 transitions. [2022-11-18 18:50:15,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 358.6666666666667) internal successors, (1076), 3 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:15,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:15,971 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:15,972 INFO L175 Difference]: Start difference. First operand has 363 places, 356 transitions, 748 flow. Second operand 3 states and 1076 transitions. [2022-11-18 18:50:15,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 360 transitions, 782 flow [2022-11-18 18:50:15,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 360 transitions, 768 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-18 18:50:15,980 INFO L231 Difference]: Finished difference. Result has 359 places, 357 transitions, 746 flow [2022-11-18 18:50:15,981 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=746, PETRI_PLACES=359, PETRI_TRANSITIONS=357} [2022-11-18 18:50:15,981 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, -2 predicate places. [2022-11-18 18:50:15,981 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 357 transitions, 746 flow [2022-11-18 18:50:15,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 355.0) internal successors, (1065), 3 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:15,982 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:15,983 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] [2022-11-18 18:50:15,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:50:15,983 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 18:50:15,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:15,984 INFO L85 PathProgramCache]: Analyzing trace with hash -2082943886, now seen corresponding path program 1 times [2022-11-18 18:50:15,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:15,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040707153] [2022-11-18 18:50:15,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:15,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:16,027 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:50:16,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2054660505] [2022-11-18 18:50:16,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:16,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:16,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:16,032 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:16,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:50:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:16,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:50:16,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:16,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 18:50:16,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:50:16,297 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:50:16,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-18 18:50:16,348 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:50:16,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-18 18:50:16,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:16,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:50:16,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:16,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040707153] [2022-11-18 18:50:16,382 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:50:16,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054660505] [2022-11-18 18:50:16,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054660505] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:16,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:16,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:50:16,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543800951] [2022-11-18 18:50:16,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:16,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:50:16,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:16,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:50:16,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:50:16,391 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 373 [2022-11-18 18:50:16,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 357 transitions, 746 flow. Second operand has 6 states, 6 states have (on average 241.5) internal successors, (1449), 6 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:16,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:16,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 373 [2022-11-18 18:50:16,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:17,525 INFO L130 PetriNetUnfolder]: 746/2988 cut-off events. [2022-11-18 18:50:17,526 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-18 18:50:17,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4682 conditions, 2988 events. 746/2988 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 18380 event pairs, 600 based on Foata normal form. 0/2608 useless extension candidates. Maximal degree in co-relation 4167. Up to 1587 conditions per place. [2022-11-18 18:50:17,550 INFO L137 encePairwiseOnDemand]: 367/373 looper letters, 116 selfloop transitions, 5 changer transitions 0/356 dead transitions. [2022-11-18 18:50:17,550 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 356 transitions, 986 flow [2022-11-18 18:50:17,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:50:17,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:50:17,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1538 transitions. [2022-11-18 18:50:17,555 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6872207327971404 [2022-11-18 18:50:17,556 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1538 transitions. [2022-11-18 18:50:17,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1538 transitions. [2022-11-18 18:50:17,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:17,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1538 transitions. [2022-11-18 18:50:17,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 256.3333333333333) internal successors, (1538), 6 states have internal predecessors, (1538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:17,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:17,569 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:17,569 INFO L175 Difference]: Start difference. First operand has 359 places, 357 transitions, 746 flow. Second operand 6 states and 1538 transitions. [2022-11-18 18:50:17,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 356 transitions, 986 flow [2022-11-18 18:50:17,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 356 transitions, 984 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:50:17,579 INFO L231 Difference]: Finished difference. Result has 362 places, 356 transitions, 752 flow [2022-11-18 18:50:17,580 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=752, PETRI_PLACES=362, PETRI_TRANSITIONS=356} [2022-11-18 18:50:17,580 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, 1 predicate places. [2022-11-18 18:50:17,581 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 356 transitions, 752 flow [2022-11-18 18:50:17,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 241.5) internal successors, (1449), 6 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:17,582 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:17,582 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] [2022-11-18 18:50:17,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:50:17,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 18:50:17,789 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 18:50:17,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:17,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1982239298, now seen corresponding path program 1 times [2022-11-18 18:50:17,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:17,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003935950] [2022-11-18 18:50:17,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:17,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:17,828 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:50:17,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2024035116] [2022-11-18 18:50:17,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:17,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:17,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:17,831 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:17,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:50:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:18,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:50:18,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:18,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:50:18,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 18:50:18,119 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:50:18,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2022-11-18 18:50:18,148 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:50:18,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 46 [2022-11-18 18:50:18,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:18,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:50:18,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:18,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003935950] [2022-11-18 18:50:18,173 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:50:18,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024035116] [2022-11-18 18:50:18,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024035116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:18,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:18,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:50:18,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894919821] [2022-11-18 18:50:18,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:18,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:50:18,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:18,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:50:18,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:50:18,178 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 373 [2022-11-18 18:50:18,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 356 transitions, 752 flow. Second operand has 6 states, 6 states have (on average 241.5) internal successors, (1449), 6 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:18,180 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:18,180 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 373 [2022-11-18 18:50:18,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:19,324 INFO L130 PetriNetUnfolder]: 746/2984 cut-off events. [2022-11-18 18:50:19,324 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-18 18:50:19,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4696 conditions, 2984 events. 746/2984 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 18367 event pairs, 600 based on Foata normal form. 0/2608 useless extension candidates. Maximal degree in co-relation 4216. Up to 1587 conditions per place. [2022-11-18 18:50:19,348 INFO L137 encePairwiseOnDemand]: 367/373 looper letters, 116 selfloop transitions, 5 changer transitions 0/355 dead transitions. [2022-11-18 18:50:19,348 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 355 transitions, 992 flow [2022-11-18 18:50:19,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:50:19,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:50:19,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1532 transitions. [2022-11-18 18:50:19,455 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6845397676496873 [2022-11-18 18:50:19,455 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1532 transitions. [2022-11-18 18:50:19,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1532 transitions. [2022-11-18 18:50:19,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:19,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1532 transitions. [2022-11-18 18:50:19,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 255.33333333333334) internal successors, (1532), 6 states have internal predecessors, (1532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:19,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:19,465 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:19,465 INFO L175 Difference]: Start difference. First operand has 362 places, 356 transitions, 752 flow. Second operand 6 states and 1532 transitions. [2022-11-18 18:50:19,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 355 transitions, 992 flow [2022-11-18 18:50:19,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 355 transitions, 982 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:50:19,473 INFO L231 Difference]: Finished difference. Result has 361 places, 355 transitions, 750 flow [2022-11-18 18:50:19,474 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=750, PETRI_PLACES=361, PETRI_TRANSITIONS=355} [2022-11-18 18:50:19,474 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, 0 predicate places. [2022-11-18 18:50:19,474 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 355 transitions, 750 flow [2022-11-18 18:50:19,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 241.5) internal successors, (1449), 6 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:19,475 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:19,476 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] [2022-11-18 18:50:19,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:50:19,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 18:50:19,682 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 18:50:19,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:19,682 INFO L85 PathProgramCache]: Analyzing trace with hash -276700611, now seen corresponding path program 1 times [2022-11-18 18:50:19,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:19,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132372745] [2022-11-18 18:50:19,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:19,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:19,724 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:50:19,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [721337119] [2022-11-18 18:50:19,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:19,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:19,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:19,726 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:19,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 18:50:19,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:19,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:50:19,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:20,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 18:50:20,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:50:20,054 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:50:20,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-18 18:50:20,101 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:50:20,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-18 18:50:20,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:20,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:50:20,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:20,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132372745] [2022-11-18 18:50:20,128 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:50:20,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721337119] [2022-11-18 18:50:20,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721337119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:20,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:20,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:50:20,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538138807] [2022-11-18 18:50:20,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:20,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:50:20,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:20,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:50:20,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:50:20,134 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 373 [2022-11-18 18:50:20,137 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 355 transitions, 750 flow. Second operand has 6 states, 6 states have (on average 240.5) internal successors, (1443), 6 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:20,137 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:20,137 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 373 [2022-11-18 18:50:20,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:21,184 INFO L130 PetriNetUnfolder]: 746/2980 cut-off events. [2022-11-18 18:50:21,185 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-18 18:50:21,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4696 conditions, 2980 events. 746/2980 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 18309 event pairs, 600 based on Foata normal form. 0/2608 useless extension candidates. Maximal degree in co-relation 4240. Up to 1591 conditions per place. [2022-11-18 18:50:21,205 INFO L137 encePairwiseOnDemand]: 367/373 looper letters, 117 selfloop transitions, 5 changer transitions 0/354 dead transitions. [2022-11-18 18:50:21,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 354 transitions, 992 flow [2022-11-18 18:50:21,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:50:21,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:50:21,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1521 transitions. [2022-11-18 18:50:21,210 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6796246648793566 [2022-11-18 18:50:21,210 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1521 transitions. [2022-11-18 18:50:21,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1521 transitions. [2022-11-18 18:50:21,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:21,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1521 transitions. [2022-11-18 18:50:21,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 253.5) internal successors, (1521), 6 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:21,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:21,220 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:21,220 INFO L175 Difference]: Start difference. First operand has 361 places, 355 transitions, 750 flow. Second operand 6 states and 1521 transitions. [2022-11-18 18:50:21,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 354 transitions, 992 flow [2022-11-18 18:50:21,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 354 transitions, 982 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:50:21,228 INFO L231 Difference]: Finished difference. Result has 360 places, 354 transitions, 748 flow [2022-11-18 18:50:21,228 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=748, PETRI_PLACES=360, PETRI_TRANSITIONS=354} [2022-11-18 18:50:21,229 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, -1 predicate places. [2022-11-18 18:50:21,229 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 354 transitions, 748 flow [2022-11-18 18:50:21,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 240.5) internal successors, (1443), 6 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:21,231 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:21,231 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] [2022-11-18 18:50:21,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:50:21,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-18 18:50:21,444 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 18:50:21,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:21,445 INFO L85 PathProgramCache]: Analyzing trace with hash 2037532335, now seen corresponding path program 1 times [2022-11-18 18:50:21,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:21,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335878001] [2022-11-18 18:50:21,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:21,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:21,482 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:50:21,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2114499073] [2022-11-18 18:50:21,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:21,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:21,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:21,484 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:21,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 18:50:21,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:21,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:50:21,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:21,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:50:21,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 18:50:21,836 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:50:21,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2022-11-18 18:50:21,872 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:50:21,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 46 [2022-11-18 18:50:21,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:21,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:50:21,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:21,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335878001] [2022-11-18 18:50:21,906 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:50:21,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114499073] [2022-11-18 18:50:21,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114499073] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:21,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:21,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:50:21,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737176478] [2022-11-18 18:50:21,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:21,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:50:21,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:21,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:50:21,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:50:21,913 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 373 [2022-11-18 18:50:21,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 354 transitions, 748 flow. Second operand has 6 states, 6 states have (on average 241.5) internal successors, (1449), 6 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:21,924 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:21,924 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 373 [2022-11-18 18:50:21,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:23,037 INFO L130 PetriNetUnfolder]: 746/2976 cut-off events. [2022-11-18 18:50:23,038 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-18 18:50:23,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4688 conditions, 2976 events. 746/2976 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 18306 event pairs, 600 based on Foata normal form. 0/2608 useless extension candidates. Maximal degree in co-relation 4252. Up to 1587 conditions per place. [2022-11-18 18:50:23,063 INFO L137 encePairwiseOnDemand]: 367/373 looper letters, 116 selfloop transitions, 5 changer transitions 0/353 dead transitions. [2022-11-18 18:50:23,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 353 transitions, 988 flow [2022-11-18 18:50:23,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:50:23,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:50:23,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1520 transitions. [2022-11-18 18:50:23,072 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6791778373547811 [2022-11-18 18:50:23,072 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1520 transitions. [2022-11-18 18:50:23,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1520 transitions. [2022-11-18 18:50:23,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:23,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1520 transitions. [2022-11-18 18:50:23,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 253.33333333333334) internal successors, (1520), 6 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:23,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:23,086 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:23,087 INFO L175 Difference]: Start difference. First operand has 360 places, 354 transitions, 748 flow. Second operand 6 states and 1520 transitions. [2022-11-18 18:50:23,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 353 transitions, 988 flow [2022-11-18 18:50:23,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 353 transitions, 978 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:50:23,099 INFO L231 Difference]: Finished difference. Result has 359 places, 353 transitions, 746 flow [2022-11-18 18:50:23,100 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=746, PETRI_PLACES=359, PETRI_TRANSITIONS=353} [2022-11-18 18:50:23,101 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, -2 predicate places. [2022-11-18 18:50:23,102 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 353 transitions, 746 flow [2022-11-18 18:50:23,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 241.5) internal successors, (1449), 6 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:23,103 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:23,103 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] [2022-11-18 18:50:23,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 18:50:23,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:23,321 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 18:50:23,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:23,321 INFO L85 PathProgramCache]: Analyzing trace with hash -458131675, now seen corresponding path program 1 times [2022-11-18 18:50:23,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:23,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013009939] [2022-11-18 18:50:23,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:23,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:23,361 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:50:23,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1901236641] [2022-11-18 18:50:23,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:23,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:23,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:23,363 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:23,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 18:50:23,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:23,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:50:23,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:23,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 18:50:23,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:50:23,711 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:50:23,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-18 18:50:23,756 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:50:23,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-18 18:50:23,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:23,787 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:50:23,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:23,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013009939] [2022-11-18 18:50:23,789 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:50:23,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901236641] [2022-11-18 18:50:23,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901236641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:23,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:23,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:50:23,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272424053] [2022-11-18 18:50:23,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:23,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:50:23,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:23,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:50:23,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:50:23,795 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 373 [2022-11-18 18:50:23,798 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 353 transitions, 746 flow. Second operand has 6 states, 6 states have (on average 243.33333333333334) internal successors, (1460), 6 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:23,798 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:23,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 373 [2022-11-18 18:50:23,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:24,914 INFO L130 PetriNetUnfolder]: 746/2972 cut-off events. [2022-11-18 18:50:24,914 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-18 18:50:24,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4676 conditions, 2972 events. 746/2972 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 18233 event pairs, 600 based on Foata normal form. 0/2608 useless extension candidates. Maximal degree in co-relation 4262. Up to 1579 conditions per place. [2022-11-18 18:50:24,939 INFO L137 encePairwiseOnDemand]: 367/373 looper letters, 114 selfloop transitions, 5 changer transitions 0/352 dead transitions. [2022-11-18 18:50:24,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 352 transitions, 982 flow [2022-11-18 18:50:24,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:50:24,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:50:24,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1524 transitions. [2022-11-18 18:50:24,945 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6809651474530831 [2022-11-18 18:50:24,946 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1524 transitions. [2022-11-18 18:50:24,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1524 transitions. [2022-11-18 18:50:24,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:24,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1524 transitions. [2022-11-18 18:50:24,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:24,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:24,958 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:24,958 INFO L175 Difference]: Start difference. First operand has 359 places, 353 transitions, 746 flow. Second operand 6 states and 1524 transitions. [2022-11-18 18:50:24,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 352 transitions, 982 flow [2022-11-18 18:50:24,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 352 transitions, 972 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:50:24,969 INFO L231 Difference]: Finished difference. Result has 358 places, 352 transitions, 744 flow [2022-11-18 18:50:24,970 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=744, PETRI_PLACES=358, PETRI_TRANSITIONS=352} [2022-11-18 18:50:24,971 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, -3 predicate places. [2022-11-18 18:50:24,971 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 352 transitions, 744 flow [2022-11-18 18:50:24,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 243.33333333333334) internal successors, (1460), 6 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:24,972 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:24,973 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] [2022-11-18 18:50:24,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 18:50:25,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 18:50:25,181 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 18:50:25,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:25,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1700938237, now seen corresponding path program 1 times [2022-11-18 18:50:25,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:25,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041562902] [2022-11-18 18:50:25,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:25,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:25,231 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:50:25,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [728212275] [2022-11-18 18:50:25,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:25,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:25,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:25,233 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:25,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 18:50:25,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:25,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:50:25,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:25,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:25,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:50:25,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:25,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:25,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041562902] [2022-11-18 18:50:25,940 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:50:25,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728212275] [2022-11-18 18:50:25,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728212275] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:50:25,940 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:50:25,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-18 18:50:25,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620307091] [2022-11-18 18:50:25,941 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:50:25,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:50:25,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:25,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:50:25,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:50:25,947 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 373 [2022-11-18 18:50:25,951 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 352 transitions, 744 flow. Second operand has 8 states, 8 states have (on average 354.875) internal successors, (2839), 8 states have internal predecessors, (2839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:25,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:25,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 373 [2022-11-18 18:50:25,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:26,219 INFO L130 PetriNetUnfolder]: 8/833 cut-off events. [2022-11-18 18:50:26,219 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 18:50:26,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 950 conditions, 833 events. 8/833 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 710 event pairs, 0 based on Foata normal form. 4/820 useless extension candidates. Maximal degree in co-relation 351. Up to 13 conditions per place. [2022-11-18 18:50:26,222 INFO L137 encePairwiseOnDemand]: 367/373 looper letters, 12 selfloop transitions, 9 changer transitions 0/362 dead transitions. [2022-11-18 18:50:26,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 362 transitions, 808 flow [2022-11-18 18:50:26,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:50:26,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 18:50:26,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3200 transitions. [2022-11-18 18:50:26,231 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9532320524277629 [2022-11-18 18:50:26,231 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3200 transitions. [2022-11-18 18:50:26,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3200 transitions. [2022-11-18 18:50:26,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:26,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3200 transitions. [2022-11-18 18:50:26,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 355.55555555555554) internal successors, (3200), 9 states have internal predecessors, (3200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:26,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 373.0) internal successors, (3730), 10 states have internal predecessors, (3730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:26,250 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 373.0) internal successors, (3730), 10 states have internal predecessors, (3730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:26,250 INFO L175 Difference]: Start difference. First operand has 358 places, 352 transitions, 744 flow. Second operand 9 states and 3200 transitions. [2022-11-18 18:50:26,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 362 transitions, 808 flow [2022-11-18 18:50:26,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 362 transitions, 798 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:50:26,265 INFO L231 Difference]: Finished difference. Result has 364 places, 358 transitions, 784 flow [2022-11-18 18:50:26,266 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=784, PETRI_PLACES=364, PETRI_TRANSITIONS=358} [2022-11-18 18:50:26,267 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, 3 predicate places. [2022-11-18 18:50:26,267 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 358 transitions, 784 flow [2022-11-18 18:50:26,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 354.875) internal successors, (2839), 8 states have internal predecessors, (2839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:26,268 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:26,269 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] [2022-11-18 18:50:26,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-18 18:50:26,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 18:50:26,476 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 18:50:26,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:26,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1935750755, now seen corresponding path program 2 times [2022-11-18 18:50:26,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:26,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159185250] [2022-11-18 18:50:26,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:26,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:26,610 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:50:26,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [84210070] [2022-11-18 18:50:26,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:50:26,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:26,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:26,612 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:26,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 18:50:26,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:50:26,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:50:26,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:50:26,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:26,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 18:50:27,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-18 18:50:27,029 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:50:27,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2022-11-18 18:50:27,064 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:50:27,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2022-11-18 18:50:27,094 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2022-11-18 18:50:27,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:50:27,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:27,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159185250] [2022-11-18 18:50:27,095 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:50:27,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84210070] [2022-11-18 18:50:27,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84210070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:27,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:27,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:50:27,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474202671] [2022-11-18 18:50:27,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:27,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:50:27,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:27,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:50:27,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:50:27,100 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 373 [2022-11-18 18:50:27,102 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 358 transitions, 784 flow. Second operand has 6 states, 6 states have (on average 230.83333333333334) internal successors, (1385), 6 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:27,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:27,103 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 373 [2022-11-18 18:50:27,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:28,521 INFO L130 PetriNetUnfolder]: 1419/4575 cut-off events. [2022-11-18 18:50:28,522 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-18 18:50:28,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7713 conditions, 4575 events. 1419/4575 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 30148 event pairs, 744 based on Foata normal form. 0/3993 useless extension candidates. Maximal degree in co-relation 7057. Up to 2267 conditions per place. [2022-11-18 18:50:28,552 INFO L137 encePairwiseOnDemand]: 366/373 looper letters, 164 selfloop transitions, 6 changer transitions 0/395 dead transitions. [2022-11-18 18:50:28,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 395 transitions, 1202 flow [2022-11-18 18:50:28,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:50:28,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:50:28,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1491 transitions. [2022-11-18 18:50:28,557 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6662198391420912 [2022-11-18 18:50:28,558 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1491 transitions. [2022-11-18 18:50:28,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1491 transitions. [2022-11-18 18:50:28,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:28,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1491 transitions. [2022-11-18 18:50:28,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 248.5) internal successors, (1491), 6 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:28,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:28,567 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:28,567 INFO L175 Difference]: Start difference. First operand has 364 places, 358 transitions, 784 flow. Second operand 6 states and 1491 transitions. [2022-11-18 18:50:28,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 395 transitions, 1202 flow [2022-11-18 18:50:28,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 395 transitions, 1196 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-18 18:50:28,575 INFO L231 Difference]: Finished difference. Result has 368 places, 359 transitions, 799 flow [2022-11-18 18:50:28,576 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=799, PETRI_PLACES=368, PETRI_TRANSITIONS=359} [2022-11-18 18:50:28,577 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, 7 predicate places. [2022-11-18 18:50:28,577 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 359 transitions, 799 flow [2022-11-18 18:50:28,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 230.83333333333334) internal successors, (1385), 6 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:28,578 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:28,579 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] [2022-11-18 18:50:28,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 18:50:28,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 18:50:28,785 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 18:50:28,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:28,785 INFO L85 PathProgramCache]: Analyzing trace with hash 497639369, now seen corresponding path program 1 times [2022-11-18 18:50:28,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:28,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202794410] [2022-11-18 18:50:28,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:28,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:28,860 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:50:28,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [858654326] [2022-11-18 18:50:28,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:28,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:28,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:28,862 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:28,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 18:50:29,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:29,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 1312 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:50:29,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:29,942 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:29,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:50:30,559 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:30,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:30,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202794410] [2022-11-18 18:50:30,560 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:50:30,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858654326] [2022-11-18 18:50:30,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858654326] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:50:30,561 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:50:30,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-18 18:50:30,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253160826] [2022-11-18 18:50:30,561 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:50:30,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 18:50:30,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:30,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 18:50:30,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:50:30,569 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 373 [2022-11-18 18:50:30,575 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 359 transitions, 799 flow. Second operand has 16 states, 16 states have (on average 355.1875) internal successors, (5683), 16 states have internal predecessors, (5683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:30,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:30,576 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 373 [2022-11-18 18:50:30,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:31,227 INFO L130 PetriNetUnfolder]: 14/1727 cut-off events. [2022-11-18 18:50:31,227 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-11-18 18:50:31,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1991 conditions, 1727 events. 14/1727 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1655 event pairs, 0 based on Foata normal form. 8/1703 useless extension candidates. Maximal degree in co-relation 1751. Up to 29 conditions per place. [2022-11-18 18:50:31,233 INFO L137 encePairwiseOnDemand]: 367/373 looper letters, 20 selfloop transitions, 21 changer transitions 0/383 dead transitions. [2022-11-18 18:50:31,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 383 transitions, 981 flow [2022-11-18 18:50:31,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 18:50:31,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 18:50:31,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 7458 transitions. [2022-11-18 18:50:31,246 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9521256223669092 [2022-11-18 18:50:31,246 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 7458 transitions. [2022-11-18 18:50:31,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 7458 transitions. [2022-11-18 18:50:31,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:31,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 7458 transitions. [2022-11-18 18:50:31,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 355.14285714285717) internal successors, (7458), 21 states have internal predecessors, (7458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:31,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 373.0) internal successors, (8206), 22 states have internal predecessors, (8206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:31,280 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 373.0) internal successors, (8206), 22 states have internal predecessors, (8206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:31,281 INFO L175 Difference]: Start difference. First operand has 368 places, 359 transitions, 799 flow. Second operand 21 states and 7458 transitions. [2022-11-18 18:50:31,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 383 transitions, 981 flow [2022-11-18 18:50:31,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 383 transitions, 972 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 18:50:31,290 INFO L231 Difference]: Finished difference. Result has 389 places, 372 transitions, 920 flow [2022-11-18 18:50:31,291 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=920, PETRI_PLACES=389, PETRI_TRANSITIONS=372} [2022-11-18 18:50:31,291 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, 28 predicate places. [2022-11-18 18:50:31,291 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 372 transitions, 920 flow [2022-11-18 18:50:31,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 355.1875) internal successors, (5683), 16 states have internal predecessors, (5683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:31,294 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:31,295 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] [2022-11-18 18:50:31,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 18:50:31,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 18:50:31,503 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 18:50:31,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:31,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1300461815, now seen corresponding path program 2 times [2022-11-18 18:50:31,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:31,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825494073] [2022-11-18 18:50:31,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:31,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:31,661 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:50:31,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1626695516] [2022-11-18 18:50:31,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:50:31,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:31,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:31,663 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:31,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 18:50:32,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:50:32,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:50:32,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:50:32,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:32,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 18:50:32,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-18 18:50:32,392 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:50:32,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2022-11-18 18:50:32,427 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:50:32,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2022-11-18 18:50:32,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1919 trivial. 0 not checked. [2022-11-18 18:50:32,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:50:32,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:32,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825494073] [2022-11-18 18:50:32,456 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:50:32,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626695516] [2022-11-18 18:50:32,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626695516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:32,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:32,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:50:32,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720461722] [2022-11-18 18:50:32,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:32,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:50:32,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:32,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:50:32,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:50:32,464 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 373 [2022-11-18 18:50:32,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 372 transitions, 920 flow. Second operand has 6 states, 6 states have (on average 230.83333333333334) internal successors, (1385), 6 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:32,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:32,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 373 [2022-11-18 18:50:32,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:35,486 INFO L130 PetriNetUnfolder]: 1802/6396 cut-off events. [2022-11-18 18:50:35,487 INFO L131 PetriNetUnfolder]: For 222/222 co-relation queries the response was YES. [2022-11-18 18:50:35,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10914 conditions, 6396 events. 1802/6396 cut-off events. For 222/222 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 41384 event pairs, 1470 based on Foata normal form. 0/5662 useless extension candidates. Maximal degree in co-relation 9638. Up to 3323 conditions per place. [2022-11-18 18:50:35,553 INFO L137 encePairwiseOnDemand]: 366/373 looper letters, 165 selfloop transitions, 6 changer transitions 0/409 dead transitions. [2022-11-18 18:50:35,558 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 409 transitions, 1344 flow [2022-11-18 18:50:35,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:50:35,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:50:35,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1490 transitions. [2022-11-18 18:50:35,577 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6657730116175157 [2022-11-18 18:50:35,577 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1490 transitions. [2022-11-18 18:50:35,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1490 transitions. [2022-11-18 18:50:35,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:35,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1490 transitions. [2022-11-18 18:50:35,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 248.33333333333334) internal successors, (1490), 6 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:35,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:35,585 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:35,585 INFO L175 Difference]: Start difference. First operand has 389 places, 372 transitions, 920 flow. Second operand 6 states and 1490 transitions. [2022-11-18 18:50:35,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 409 transitions, 1344 flow [2022-11-18 18:50:35,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 409 transitions, 1320 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-11-18 18:50:35,607 INFO L231 Difference]: Finished difference. Result has 388 places, 373 transitions, 921 flow [2022-11-18 18:50:35,608 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=921, PETRI_PLACES=388, PETRI_TRANSITIONS=373} [2022-11-18 18:50:35,608 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, 27 predicate places. [2022-11-18 18:50:35,609 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 373 transitions, 921 flow [2022-11-18 18:50:35,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 230.83333333333334) internal successors, (1385), 6 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:35,609 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:35,610 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, 1, 1, 1, 1] [2022-11-18 18:50:35,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-11-18 18:50:35,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 18:50:35,818 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 18:50:35,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:35,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1562674956, now seen corresponding path program 1 times [2022-11-18 18:50:35,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:35,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225356746] [2022-11-18 18:50:35,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:35,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:36,288 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:50:36,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1183003503] [2022-11-18 18:50:36,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:36,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:36,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:36,291 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:36,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 18:50:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:37,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 2888 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:50:37,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:38,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:38,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:50:39,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:39,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:39,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225356746] [2022-11-18 18:50:39,975 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:50:39,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183003503] [2022-11-18 18:50:39,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183003503] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:50:39,976 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:50:39,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-18 18:50:39,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107079813] [2022-11-18 18:50:39,977 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:50:39,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 18:50:39,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:39,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 18:50:39,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2022-11-18 18:50:39,990 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 373 [2022-11-18 18:50:39,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 373 transitions, 921 flow. Second operand has 32 states, 32 states have (on average 355.375) internal successors, (11372), 32 states have internal predecessors, (11372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:40,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:40,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 373 [2022-11-18 18:50:40,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:41,779 INFO L130 PetriNetUnfolder]: 17/3249 cut-off events. [2022-11-18 18:50:41,779 INFO L131 PetriNetUnfolder]: For 573/573 co-relation queries the response was YES. [2022-11-18 18:50:41,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3901 conditions, 3249 events. 17/3249 cut-off events. For 573/573 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1973 event pairs, 0 based on Foata normal form. 16/3226 useless extension candidates. Maximal degree in co-relation 3743. Up to 61 conditions per place. [2022-11-18 18:50:41,785 INFO L137 encePairwiseOnDemand]: 367/373 looper letters, 36 selfloop transitions, 45 changer transitions 0/424 dead transitions. [2022-11-18 18:50:41,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 424 transitions, 1383 flow [2022-11-18 18:50:41,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-18 18:50:41,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-18 18:50:41,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 15974 transitions. [2022-11-18 18:50:41,800 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9516830503425677 [2022-11-18 18:50:41,800 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 15974 transitions. [2022-11-18 18:50:41,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 15974 transitions. [2022-11-18 18:50:41,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:41,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 15974 transitions. [2022-11-18 18:50:41,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 354.97777777777776) internal successors, (15974), 45 states have internal predecessors, (15974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:41,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 373.0) internal successors, (17158), 46 states have internal predecessors, (17158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:41,861 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 373.0) internal successors, (17158), 46 states have internal predecessors, (17158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:41,862 INFO L175 Difference]: Start difference. First operand has 388 places, 373 transitions, 921 flow. Second operand 45 states and 15974 transitions. [2022-11-18 18:50:41,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 424 transitions, 1383 flow [2022-11-18 18:50:41,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 424 transitions, 1370 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-18 18:50:41,872 INFO L231 Difference]: Finished difference. Result has 437 places, 398 transitions, 1210 flow [2022-11-18 18:50:41,873 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1210, PETRI_PLACES=437, PETRI_TRANSITIONS=398} [2022-11-18 18:50:41,873 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, 76 predicate places. [2022-11-18 18:50:41,874 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 398 transitions, 1210 flow [2022-11-18 18:50:41,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 355.375) internal successors, (11372), 32 states have internal predecessors, (11372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:41,878 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:41,879 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:41,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 18:50:42,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 18:50:42,096 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 18:50:42,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:42,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1906612852, now seen corresponding path program 2 times [2022-11-18 18:50:42,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:42,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840384569] [2022-11-18 18:50:42,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:42,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:42,424 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:50:42,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [99583093] [2022-11-18 18:50:42,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:50:42,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:42,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:42,427 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:42,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 18:50:43,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:50:43,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:50:43,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:50:43,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:43,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 18:50:43,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-18 18:50:43,526 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:50:43,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2022-11-18 18:50:43,552 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:50:43,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2022-11-18 18:50:43,582 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9571 trivial. 0 not checked. [2022-11-18 18:50:43,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:50:43,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:43,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840384569] [2022-11-18 18:50:43,583 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:50:43,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99583093] [2022-11-18 18:50:43,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99583093] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:43,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:43,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:50:43,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124166961] [2022-11-18 18:50:43,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:43,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:50:43,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:43,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:50:43,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:50:43,588 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 373 [2022-11-18 18:50:43,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 398 transitions, 1210 flow. Second operand has 6 states, 6 states have (on average 229.16666666666666) internal successors, (1375), 6 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:43,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:43,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 373 [2022-11-18 18:50:43,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:50,719 INFO L130 PetriNetUnfolder]: 2665/9552 cut-off events. [2022-11-18 18:50:50,719 INFO L131 PetriNetUnfolder]: For 907/907 co-relation queries the response was YES. [2022-11-18 18:50:50,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17005 conditions, 9552 events. 2665/9552 cut-off events. For 907/907 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 56127 event pairs, 986 based on Foata normal form. 0/8626 useless extension candidates. Maximal degree in co-relation 14467. Up to 4281 conditions per place. [2022-11-18 18:50:50,762 INFO L137 encePairwiseOnDemand]: 361/373 looper letters, 249 selfloop transitions, 33 changer transitions 0/542 dead transitions. [2022-11-18 18:50:50,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 542 transitions, 2106 flow [2022-11-18 18:50:50,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:50:50,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:50:50,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1573 transitions. [2022-11-18 18:50:50,764 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7028596961572833 [2022-11-18 18:50:50,764 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1573 transitions. [2022-11-18 18:50:50,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1573 transitions. [2022-11-18 18:50:50,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:50,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1573 transitions. [2022-11-18 18:50:50,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 262.1666666666667) internal successors, (1573), 6 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:50,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:50,770 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:50,770 INFO L175 Difference]: Start difference. First operand has 437 places, 398 transitions, 1210 flow. Second operand 6 states and 1573 transitions. [2022-11-18 18:50:50,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 542 transitions, 2106 flow [2022-11-18 18:50:50,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 542 transitions, 2050 flow, removed 10 selfloop flow, removed 18 redundant places. [2022-11-18 18:50:50,787 INFO L231 Difference]: Finished difference. Result has 429 places, 428 transitions, 1408 flow [2022-11-18 18:50:50,788 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=1154, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1408, PETRI_PLACES=429, PETRI_TRANSITIONS=428} [2022-11-18 18:50:50,789 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, 68 predicate places. [2022-11-18 18:50:50,789 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 428 transitions, 1408 flow [2022-11-18 18:50:50,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 229.16666666666666) internal successors, (1375), 6 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:50,789 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:50,790 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:50,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 18:50:50,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:50,999 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 18:50:50,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:50,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1262109581, now seen corresponding path program 1 times [2022-11-18 18:50:50,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:51,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110016814] [2022-11-18 18:50:51,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:51,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:51,233 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:50:51,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [727947219] [2022-11-18 18:50:51,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:51,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:51,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:51,235 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:51,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 18:50:53,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:53,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 5868 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-18 18:50:53,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:55,523 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 1 proven. 9570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:55,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:50:58,220 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 1 proven. 9570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:50:58,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:58,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110016814] [2022-11-18 18:50:58,220 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:50:58,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727947219] [2022-11-18 18:50:58,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727947219] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:50:58,221 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:50:58,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2022-11-18 18:50:58,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290584552] [2022-11-18 18:50:58,222 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:50:58,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-18 18:50:58,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:58,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-18 18:50:58,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2022-11-18 18:50:58,241 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 373 [2022-11-18 18:50:58,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 428 transitions, 1408 flow. Second operand has 61 states, 61 states have (on average 355.4918032786885) internal successors, (21685), 61 states have internal predecessors, (21685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:58,252 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:58,252 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 373 [2022-11-18 18:50:58,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:51:04,819 INFO L130 PetriNetUnfolder]: 91/6462 cut-off events. [2022-11-18 18:51:04,820 INFO L131 PetriNetUnfolder]: For 4531/4554 co-relation queries the response was YES. [2022-11-18 18:51:04,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8251 conditions, 6462 events. 91/6462 cut-off events. For 4531/4554 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 5542 event pairs, 4 based on Foata normal form. 34/6405 useless extension candidates. Maximal degree in co-relation 7866. Up to 121 conditions per place. [2022-11-18 18:51:04,837 INFO L137 encePairwiseOnDemand]: 367/373 looper letters, 66 selfloop transitions, 90 changer transitions 0/529 dead transitions. [2022-11-18 18:51:04,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 529 transitions, 2494 flow [2022-11-18 18:51:04,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-18 18:51:04,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-11-18 18:51:04,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 31941 transitions. [2022-11-18 18:51:04,876 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9514745308310992 [2022-11-18 18:51:04,876 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 31941 transitions. [2022-11-18 18:51:04,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 31941 transitions. [2022-11-18 18:51:04,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:51:04,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 31941 transitions. [2022-11-18 18:51:05,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 354.9) internal successors, (31941), 90 states have internal predecessors, (31941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:05,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 373.0) internal successors, (33943), 91 states have internal predecessors, (33943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:05,115 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 373.0) internal successors, (33943), 91 states have internal predecessors, (33943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:05,115 INFO L175 Difference]: Start difference. First operand has 429 places, 428 transitions, 1408 flow. Second operand 90 states and 31941 transitions. [2022-11-18 18:51:05,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 529 transitions, 2494 flow [2022-11-18 18:51:05,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 529 transitions, 2494 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:51:05,135 INFO L231 Difference]: Finished difference. Result has 534 places, 474 transitions, 2062 flow [2022-11-18 18:51:05,136 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=1408, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=2062, PETRI_PLACES=534, PETRI_TRANSITIONS=474} [2022-11-18 18:51:05,136 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, 173 predicate places. [2022-11-18 18:51:05,137 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 474 transitions, 2062 flow [2022-11-18 18:51:05,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 355.4918032786885) internal successors, (21685), 61 states have internal predecessors, (21685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:05,139 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:51:05,140 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:51:05,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 18:51:05,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 18:51:05,356 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 18:51:05,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:51:05,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1008509452, now seen corresponding path program 2 times [2022-11-18 18:51:05,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:51:05,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183493512] [2022-11-18 18:51:05,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:51:05,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:51:05,789 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:51:05,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1883735933] [2022-11-18 18:51:05,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:51:05,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:51:05,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:51:05,791 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:51:05,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 18:51:07,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:51:07,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:51:07,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:51:07,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:51:07,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 18:51:07,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-18 18:51:07,737 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:51:07,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2022-11-18 18:51:07,760 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:51:07,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2022-11-18 18:51:07,792 INFO L134 CoverageAnalysis]: Checked inductivity of 39616 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39616 trivial. 0 not checked. [2022-11-18 18:51:07,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:51:07,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:51:07,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183493512] [2022-11-18 18:51:07,793 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:51:07,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883735933] [2022-11-18 18:51:07,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883735933] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:51:07,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:51:07,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:51:07,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348932500] [2022-11-18 18:51:07,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:51:07,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:51:07,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:51:07,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:51:07,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:51:07,798 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 373 [2022-11-18 18:51:07,799 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 474 transitions, 2062 flow. Second operand has 6 states, 6 states have (on average 229.33333333333334) internal successors, (1376), 6 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:07,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:51:07,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 373 [2022-11-18 18:51:07,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:51:23,785 INFO L130 PetriNetUnfolder]: 3429/14102 cut-off events. [2022-11-18 18:51:23,785 INFO L131 PetriNetUnfolder]: For 5398/5406 co-relation queries the response was YES. [2022-11-18 18:51:23,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26974 conditions, 14102 events. 3429/14102 cut-off events. For 5398/5406 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 71928 event pairs, 1148 based on Foata normal form. 0/12988 useless extension candidates. Maximal degree in co-relation 22645. Up to 6611 conditions per place. [2022-11-18 18:51:23,886 INFO L137 encePairwiseOnDemand]: 361/373 looper letters, 282 selfloop transitions, 49 changer transitions 0/638 dead transitions. [2022-11-18 18:51:23,886 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 638 transitions, 3314 flow [2022-11-18 18:51:23,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:51:23,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:51:23,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1569 transitions. [2022-11-18 18:51:23,891 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7010723860589813 [2022-11-18 18:51:23,891 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1569 transitions. [2022-11-18 18:51:23,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1569 transitions. [2022-11-18 18:51:23,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:51:23,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1569 transitions. [2022-11-18 18:51:23,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 261.5) internal successors, (1569), 6 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:23,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:23,899 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:23,899 INFO L175 Difference]: Start difference. First operand has 534 places, 474 transitions, 2062 flow. Second operand 6 states and 1569 transitions. [2022-11-18 18:51:23,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 638 transitions, 3314 flow [2022-11-18 18:51:23,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 638 transitions, 3196 flow, removed 17 selfloop flow, removed 42 redundant places. [2022-11-18 18:51:23,946 INFO L231 Difference]: Finished difference. Result has 502 places, 512 transitions, 2394 flow [2022-11-18 18:51:23,946 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=1944, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2394, PETRI_PLACES=502, PETRI_TRANSITIONS=512} [2022-11-18 18:51:23,947 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, 141 predicate places. [2022-11-18 18:51:23,947 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 512 transitions, 2394 flow [2022-11-18 18:51:23,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 229.33333333333334) internal successors, (1376), 6 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:23,948 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:51:23,949 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:51:23,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 18:51:24,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 18:51:24,158 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 18:51:24,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:51:24,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1516565143, now seen corresponding path program 1 times [2022-11-18 18:51:24,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:51:24,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855418822] [2022-11-18 18:51:24,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:51:24,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:51:24,626 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:51:24,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [650415360] [2022-11-18 18:51:24,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:51:24,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:51:24,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:51:24,631 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:51:24,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 18:51:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:28,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 11411 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:51:28,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:51:32,771 INFO L134 CoverageAnalysis]: Checked inductivity of 39616 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39615 trivial. 0 not checked. [2022-11-18 18:51:32,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:51:38,292 INFO L134 CoverageAnalysis]: Checked inductivity of 39616 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39615 trivial. 0 not checked. [2022-11-18 18:51:38,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:51:38,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855418822] [2022-11-18 18:51:38,293 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:51:38,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650415360] [2022-11-18 18:51:38,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650415360] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:51:38,293 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:51:38,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-18 18:51:38,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977036553] [2022-11-18 18:51:38,295 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:51:38,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:51:38,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:51:38,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:51:38,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:51:38,301 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 350 out of 373 [2022-11-18 18:51:38,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 512 transitions, 2394 flow. Second operand has 8 states, 8 states have (on average 352.75) internal successors, (2822), 8 states have internal predecessors, (2822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:38,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:51:38,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 350 of 373 [2022-11-18 18:51:38,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:51:50,038 INFO L130 PetriNetUnfolder]: 187/9911 cut-off events. [2022-11-18 18:51:50,039 INFO L131 PetriNetUnfolder]: For 4400/4441 co-relation queries the response was YES. [2022-11-18 18:51:50,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13106 conditions, 9911 events. 187/9911 cut-off events. For 4400/4441 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 10896 event pairs, 10 based on Foata normal form. 4/9749 useless extension candidates. Maximal degree in co-relation 12221. Up to 181 conditions per place. [2022-11-18 18:51:50,066 INFO L137 encePairwiseOnDemand]: 367/373 looper letters, 21 selfloop transitions, 9 changer transitions 0/528 dead transitions. [2022-11-18 18:51:50,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 528 transitions, 2488 flow [2022-11-18 18:51:50,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:51:50,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 18:51:50,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3182 transitions. [2022-11-18 18:51:50,068 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9478701221328567 [2022-11-18 18:51:50,069 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3182 transitions. [2022-11-18 18:51:50,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3182 transitions. [2022-11-18 18:51:50,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:51:50,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3182 transitions. [2022-11-18 18:51:50,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 353.55555555555554) internal successors, (3182), 9 states have internal predecessors, (3182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:50,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 373.0) internal successors, (3730), 10 states have internal predecessors, (3730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:50,076 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 373.0) internal successors, (3730), 10 states have internal predecessors, (3730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:50,076 INFO L175 Difference]: Start difference. First operand has 502 places, 512 transitions, 2394 flow. Second operand 9 states and 3182 transitions. [2022-11-18 18:51:50,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 528 transitions, 2488 flow [2022-11-18 18:51:50,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 528 transitions, 2488 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:51:50,130 INFO L231 Difference]: Finished difference. Result has 513 places, 518 transitions, 2444 flow [2022-11-18 18:51:50,131 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=373, PETRI_DIFFERENCE_MINUEND_FLOW=2394, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2444, PETRI_PLACES=513, PETRI_TRANSITIONS=518} [2022-11-18 18:51:50,131 INFO L288 CegarLoopForPetriNet]: 361 programPoint places, 152 predicate places. [2022-11-18 18:51:50,131 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 518 transitions, 2444 flow [2022-11-18 18:51:50,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 352.75) internal successors, (2822), 8 states have internal predecessors, (2822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:50,132 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:51:50,134 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:51:50,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 18:51:50,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:51:50,357 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 18:51:50,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:51:50,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1419987031, now seen corresponding path program 2 times [2022-11-18 18:51:50,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:51:50,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097349265] [2022-11-18 18:51:50,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:51:50,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:51:51,628 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:51:51,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [177796238] [2022-11-18 18:51:51,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:51:51,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:51:51,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:51:51,630 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:51:51,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d030f72-abce-4b38-89d3-2d11c861cfbf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 18:51:56,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:51:56,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:51:56,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:51:56,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:51:56,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 18:51:56,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:51:56,470 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:51:56,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-18 18:51:56,491 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:51:56,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-18 18:51:56,531 INFO L134 CoverageAnalysis]: Checked inductivity of 364812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364812 trivial. 0 not checked. [2022-11-18 18:51:56,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:51:56,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:51:56,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097349265] [2022-11-18 18:51:56,531 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:51:56,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177796238] [2022-11-18 18:51:56,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177796238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:51:56,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:51:56,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:51:56,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793001922] [2022-11-18 18:51:56,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:51:56,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:51:56,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:51:56,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:51:56,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:51:56,540 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 373 [2022-11-18 18:51:56,541 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 518 transitions, 2444 flow. Second operand has 6 states, 6 states have (on average 244.66666666666666) internal successors, (1468), 6 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:51:56,541 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:51:56,541 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 373 [2022-11-18 18:51:56,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand