./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_23-evilcollapse_rc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_23-evilcollapse_rc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8 --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 edbdacd2fc511db63719a3e7d2bd257b6310a833f5bcfcddcb6829e714260082 --- 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-2329fc7 [2022-12-13 19:49:11,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:49:11,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:49:11,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:49:11,453 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:49:11,454 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:49:11,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:49:11,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:49:11,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:49:11,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:49:11,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:49:11,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:49:11,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:49:11,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:49:11,464 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:49:11,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:49:11,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:49:11,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:49:11,469 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:49:11,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:49:11,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:49:11,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:49:11,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:49:11,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:49:11,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:49:11,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:49:11,479 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:49:11,480 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:49:11,481 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:49:11,481 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:49:11,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:49:11,482 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:49:11,483 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:49:11,483 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:49:11,485 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:49:11,485 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:49:11,485 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:49:11,485 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:49:11,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:49:11,486 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:49:11,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:49:11,487 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-12-13 19:49:11,508 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:49:11,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:49:11,508 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:49:11,509 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:49:11,509 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:49:11,509 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:49:11,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:49:11,510 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:49:11,510 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:49:11,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:49:11,510 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:49:11,511 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 19:49:11,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:49:11,511 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:49:11,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:49:11,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:49:11,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:49:11,512 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:49:11,512 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-13 19:49:11,512 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:49:11,512 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:49:11,512 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:49:11,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:49:11,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:49:11,513 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:49:11,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:49:11,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:49:11,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:49:11,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:49:11,513 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:49:11,514 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:49:11,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:49:11,514 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:49:11,514 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:49:11,514 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:49:11,514 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:49:11,514 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:49:11,514 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> edbdacd2fc511db63719a3e7d2bd257b6310a833f5bcfcddcb6829e714260082 [2022-12-13 19:49:11,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:49:11,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:49:11,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:49:11,708 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:49:11,708 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:49:11,709 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/09-regions_23-evilcollapse_rc.i [2022-12-13 19:49:14,286 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:49:14,511 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:49:14,512 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/sv-benchmarks/c/goblint-regression/09-regions_23-evilcollapse_rc.i [2022-12-13 19:49:14,524 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/data/663e8f3f0/0440284b5c5845a987c45aad923f5473/FLAG194a91f05 [2022-12-13 19:49:14,867 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/data/663e8f3f0/0440284b5c5845a987c45aad923f5473 [2022-12-13 19:49:14,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:49:14,875 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:49:14,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:49:14,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:49:14,884 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:49:14,885 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:49:14" (1/1) ... [2022-12-13 19:49:14,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f1eae74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:49:14, skipping insertion in model container [2022-12-13 19:49:14,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:49:14" (1/1) ... [2022-12-13 19:49:14,893 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:49:14,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:49:15,184 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 19:49:15,184 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 19:49:15,185 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 19:49:15,186 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 19:49:15,203 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:49:15,214 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:49:15,241 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 19:49:15,241 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 19:49:15,242 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 19:49:15,243 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 19:49:15,252 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:49:15,284 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:49:15,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:49:15 WrapperNode [2022-12-13 19:49:15,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:49:15,286 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:49:15,286 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:49:15,286 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:49:15,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:49:15" (1/1) ... [2022-12-13 19:49:15,310 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:49:15" (1/1) ... [2022-12-13 19:49:15,343 INFO L138 Inliner]: procedures = 272, calls = 38, calls flagged for inlining = 10, calls inlined = 11, statements flattened = 268 [2022-12-13 19:49:15,343 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:49:15,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:49:15,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:49:15,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:49:15,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:49:15" (1/1) ... [2022-12-13 19:49:15,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:49:15" (1/1) ... [2022-12-13 19:49:15,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:49:15" (1/1) ... [2022-12-13 19:49:15,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:49:15" (1/1) ... [2022-12-13 19:49:15,374 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:49:15" (1/1) ... [2022-12-13 19:49:15,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:49:15" (1/1) ... [2022-12-13 19:49:15,379 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:49:15" (1/1) ... [2022-12-13 19:49:15,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:49:15" (1/1) ... [2022-12-13 19:49:15,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:49:15,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:49:15,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:49:15,384 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:49:15,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:49:15" (1/1) ... [2022-12-13 19:49:15,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:49:15,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:49:15,408 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:49:15,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:49:15,438 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-12-13 19:49:15,438 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-12-13 19:49:15,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 19:49:15,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 19:49:15,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:49:15,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 19:49:15,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 19:49:15,438 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 19:49:15,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 19:49:15,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:49:15,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 19:49:15,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:49:15,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:49:15,440 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 19:49:15,568 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:49:15,570 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:49:15,964 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:49:15,974 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:49:15,975 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 19:49:15,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:49:15 BoogieIcfgContainer [2022-12-13 19:49:15,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:49:15,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:49:15,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:49:15,981 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:49:15,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:49:14" (1/3) ... [2022-12-13 19:49:15,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@121d410c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:49:15, skipping insertion in model container [2022-12-13 19:49:15,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:49:15" (2/3) ... [2022-12-13 19:49:15,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@121d410c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:49:15, skipping insertion in model container [2022-12-13 19:49:15,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:49:15" (3/3) ... [2022-12-13 19:49:15,983 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_23-evilcollapse_rc.i [2022-12-13 19:49:15,989 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 19:49:15,997 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:49:15,997 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-12-13 19:49:15,997 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 19:49:16,062 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 19:49:16,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 377 places, 386 transitions, 782 flow [2022-12-13 19:49:16,170 INFO L130 PetriNetUnfolder]: 16/384 cut-off events. [2022-12-13 19:49:16,170 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:49:16,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 384 events. 16/384 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 679 event pairs, 0 based on Foata normal form. 0/346 useless extension candidates. Maximal degree in co-relation 307. Up to 2 conditions per place. [2022-12-13 19:49:16,177 INFO L82 GeneralOperation]: Start removeDead. Operand has 377 places, 386 transitions, 782 flow [2022-12-13 19:49:16,183 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 375 places, 384 transitions, 774 flow [2022-12-13 19:49:16,186 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 19:49:16,194 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 375 places, 384 transitions, 774 flow [2022-12-13 19:49:16,196 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 375 places, 384 transitions, 774 flow [2022-12-13 19:49:16,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 375 places, 384 transitions, 774 flow [2022-12-13 19:49:16,256 INFO L130 PetriNetUnfolder]: 16/384 cut-off events. [2022-12-13 19:49:16,256 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:49:16,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 384 events. 16/384 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 679 event pairs, 0 based on Foata normal form. 0/346 useless extension candidates. Maximal degree in co-relation 307. Up to 2 conditions per place. [2022-12-13 19:49:16,262 INFO L119 LiptonReduction]: Number of co-enabled transitions 12784 [2022-12-13 19:50:17,769 WARN L233 SmtUtils]: Spent 6.29s on a formula simplification. DAG size of input: 136 DAG size of output: 130 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 19:50:28,287 WARN L233 SmtUtils]: Spent 7.72s on a formula simplification. DAG size of input: 139 DAG size of output: 133 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 19:51:19,222 WARN L233 SmtUtils]: Spent 47.66s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 19:51:49,166 WARN L233 SmtUtils]: Spent 29.94s on a formula simplification that was a NOOP. DAG size: 166 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 19:52:33,009 WARN L233 SmtUtils]: Spent 43.84s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 19:53:03,411 WARN L233 SmtUtils]: Spent 30.40s on a formula simplification that was a NOOP. DAG size: 166 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 19:53:14,593 WARN L233 SmtUtils]: Spent 11.17s on a formula simplification that was a NOOP. DAG size: 165 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 19:53:20,975 WARN L233 SmtUtils]: Spent 6.38s on a formula simplification that was a NOOP. DAG size: 145 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 19:53:33,956 WARN L233 SmtUtils]: Spent 12.98s on a formula simplification that was a NOOP. DAG size: 174 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 19:53:42,517 WARN L233 SmtUtils]: Spent 8.56s on a formula simplification that was a NOOP. DAG size: 154 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 19:55:48,783 WARN L233 SmtUtils]: Spent 2.10m on a formula simplification that was a NOOP. DAG size: 260 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 19:57:19,704 WARN L233 SmtUtils]: Spent 1.52m on a formula simplification that was a NOOP. DAG size: 252 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 19:59:15,661 WARN L233 SmtUtils]: Spent 1.93m on a formula simplification that was a NOOP. DAG size: 260 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 20:01:43,342 WARN L233 SmtUtils]: Spent 2.46m on a formula simplification that was a NOOP. DAG size: 252 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 20:01:43,346 INFO L134 LiptonReduction]: Checked pairs total: 47219 [2022-12-13 20:01:43,346 INFO L136 LiptonReduction]: Total number of compositions: 372 [2022-12-13 20:01:43,355 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:01:43,358 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;@4ecc7c45, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:01:43,359 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2022-12-13 20:01:43,360 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-12-13 20:01:43,360 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:01:43,360 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:01:43,361 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 20:01:43,361 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-12-13 20:01:43,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:43,365 INFO L85 PathProgramCache]: Analyzing trace with hash 38223, now seen corresponding path program 1 times [2022-12-13 20:01:43,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:43,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438573901] [2022-12-13 20:01:43,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:43,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:43,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:43,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:01:43,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:43,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438573901] [2022-12-13 20:01:43,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438573901] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:01:43,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:01:43,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:01:43,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040920331] [2022-12-13 20:01:43,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:01:43,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 20:01:43,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:43,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 20:01:43,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 20:01:43,502 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 374 out of 758 [2022-12-13 20:01:43,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 87 transitions, 180 flow. Second operand has 2 states, 2 states have (on average 375.0) internal successors, (750), 2 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:01:43,505 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:01:43,505 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 374 of 758 [2022-12-13 20:01:43,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:01:45,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:01:45,902 INFO L130 PetriNetUnfolder]: 434/1336 cut-off events. [2022-12-13 20:01:45,902 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-12-13 20:01:45,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2065 conditions, 1336 events. 434/1336 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 8201 event pairs, 340 based on Foata normal form. 0/1221 useless extension candidates. Maximal degree in co-relation 2047. Up to 702 conditions per place. [2022-12-13 20:01:45,909 INFO L137 encePairwiseOnDemand]: 744/758 looper letters, 33 selfloop transitions, 0 changer transitions 0/73 dead transitions. [2022-12-13 20:01:45,909 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 73 transitions, 218 flow [2022-12-13 20:01:45,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 20:01:45,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 20:01:45,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 795 transitions. [2022-12-13 20:01:45,926 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5244063324538258 [2022-12-13 20:01:45,926 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 795 transitions. [2022-12-13 20:01:45,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 795 transitions. [2022-12-13 20:01:45,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:01:45,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 795 transitions. [2022-12-13 20:01:45,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 397.5) internal successors, (795), 2 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:01:45,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 758.0) internal successors, (2274), 3 states have internal predecessors, (2274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:01:45,945 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 758.0) internal successors, (2274), 3 states have internal predecessors, (2274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:01:45,947 INFO L175 Difference]: Start difference. First operand has 88 places, 87 transitions, 180 flow. Second operand 2 states and 795 transitions. [2022-12-13 20:01:45,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 73 transitions, 218 flow [2022-12-13 20:01:45,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 73 transitions, 216 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:01:45,953 INFO L231 Difference]: Finished difference. Result has 73 places, 73 transitions, 150 flow [2022-12-13 20:01:45,955 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=150, PETRI_PLACES=73, PETRI_TRANSITIONS=73} [2022-12-13 20:01:45,958 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, -15 predicate places. [2022-12-13 20:01:45,958 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 73 transitions, 150 flow [2022-12-13 20:01:45,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 375.0) internal successors, (750), 2 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:01:45,959 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:01:45,959 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:45,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 20:01:45,959 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-12-13 20:01:45,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:45,960 INFO L85 PathProgramCache]: Analyzing trace with hash 965920373, now seen corresponding path program 1 times [2022-12-13 20:01:45,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:45,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882215718] [2022-12-13 20:01:45,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:45,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:46,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:46,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:01:46,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:46,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882215718] [2022-12-13 20:01:46,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882215718] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:01:46,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:01:46,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:01:46,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831466062] [2022-12-13 20:01:46,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:01:46,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:01:46,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:46,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:01:46,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:01:46,144 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 758 [2022-12-13 20:01:46,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 73 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 372.0) internal successors, (1116), 3 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:01:46,145 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:01:46,145 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 758 [2022-12-13 20:01:46,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:01:47,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:01:49,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:01:49,251 INFO L130 PetriNetUnfolder]: 435/1339 cut-off events. [2022-12-13 20:01:49,251 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:01:49,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2070 conditions, 1339 events. 435/1339 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 8159 event pairs, 340 based on Foata normal form. 0/1223 useless extension candidates. Maximal degree in co-relation 2067. Up to 702 conditions per place. [2022-12-13 20:01:49,256 INFO L137 encePairwiseOnDemand]: 755/758 looper letters, 34 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2022-12-13 20:01:49,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 76 transitions, 228 flow [2022-12-13 20:01:49,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:01:49,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:01:49,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1147 transitions. [2022-12-13 20:01:49,258 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5043975373790677 [2022-12-13 20:01:49,258 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1147 transitions. [2022-12-13 20:01:49,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1147 transitions. [2022-12-13 20:01:49,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:01:49,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1147 transitions. [2022-12-13 20:01:49,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 382.3333333333333) internal successors, (1147), 3 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:01:49,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:01:49,264 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:01:49,264 INFO L175 Difference]: Start difference. First operand has 73 places, 73 transitions, 150 flow. Second operand 3 states and 1147 transitions. [2022-12-13 20:01:49,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 76 transitions, 228 flow [2022-12-13 20:01:49,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 76 transitions, 228 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:01:49,265 INFO L231 Difference]: Finished difference. Result has 76 places, 74 transitions, 162 flow [2022-12-13 20:01:49,266 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=76, PETRI_TRANSITIONS=74} [2022-12-13 20:01:49,266 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, -12 predicate places. [2022-12-13 20:01:49,266 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 74 transitions, 162 flow [2022-12-13 20:01:49,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 372.0) internal successors, (1116), 3 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:01:49,267 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:01:49,267 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:49,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 20:01:49,267 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-12-13 20:01:49,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:49,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1156790830, now seen corresponding path program 1 times [2022-12-13 20:01:49,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:49,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325471293] [2022-12-13 20:01:49,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:49,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:49,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:01:49,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:49,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325471293] [2022-12-13 20:01:49,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325471293] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:01:49,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:01:49,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:01:49,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272145997] [2022-12-13 20:01:49,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:01:49,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:01:49,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:49,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:01:49,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:01:49,352 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 758 [2022-12-13 20:01:49,353 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 74 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 372.6666666666667) internal successors, (1118), 3 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:01:49,353 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:01:49,353 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 758 [2022-12-13 20:01:49,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:01:51,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:01:51,933 INFO L130 PetriNetUnfolder]: 435/1341 cut-off events. [2022-12-13 20:01:51,933 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:01:51,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2081 conditions, 1341 events. 435/1341 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 8183 event pairs, 340 based on Foata normal form. 2/1230 useless extension candidates. Maximal degree in co-relation 2076. Up to 705 conditions per place. [2022-12-13 20:01:51,938 INFO L137 encePairwiseOnDemand]: 755/758 looper letters, 33 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2022-12-13 20:01:51,938 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 75 transitions, 234 flow [2022-12-13 20:01:51,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:01:51,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:01:51,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1145 transitions. [2022-12-13 20:01:51,940 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5035180299032542 [2022-12-13 20:01:51,940 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1145 transitions. [2022-12-13 20:01:51,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1145 transitions. [2022-12-13 20:01:51,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:01:51,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1145 transitions. [2022-12-13 20:01:51,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 381.6666666666667) internal successors, (1145), 3 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:01:51,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:01:51,946 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 758.0) internal successors, (3032), 4 states have internal predecessors, (3032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:01:51,946 INFO L175 Difference]: Start difference. First operand has 76 places, 74 transitions, 162 flow. Second operand 3 states and 1145 transitions. [2022-12-13 20:01:51,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 75 transitions, 234 flow [2022-12-13 20:01:51,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 75 transitions, 232 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:01:51,948 INFO L231 Difference]: Finished difference. Result has 78 places, 75 transitions, 174 flow [2022-12-13 20:01:51,948 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=78, PETRI_TRANSITIONS=75} [2022-12-13 20:01:51,948 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, -10 predicate places. [2022-12-13 20:01:51,949 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 75 transitions, 174 flow [2022-12-13 20:01:51,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 372.6666666666667) internal successors, (1118), 3 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:01:51,949 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:01:51,949 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:51,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 20:01:51,949 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-12-13 20:01:51,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:51,950 INFO L85 PathProgramCache]: Analyzing trace with hash 34470766, now seen corresponding path program 1 times [2022-12-13 20:01:51,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:51,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500454592] [2022-12-13 20:01:51,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:51,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:52,010 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:01:52,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2009413958] [2022-12-13 20:01:52,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:52,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:52,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:52,012 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:01:52,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 20:01:52,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:52,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 1251 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:01:52,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:01:52,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:01:52,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:01:52,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:01:52,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:52,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500454592] [2022-12-13 20:01:52,338 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:01:52,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009413958] [2022-12-13 20:01:52,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009413958] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:01:52,338 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:01:52,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-12-13 20:01:52,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80400972] [2022-12-13 20:01:52,339 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:01:52,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 20:01:52,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:52,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 20:01:52,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:01:52,357 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 369 out of 758 [2022-12-13 20:01:52,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 75 transitions, 174 flow. Second operand has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:01:52,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:01:52,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 369 of 758 [2022-12-13 20:01:52,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:01:53,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:01:56,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:01:58,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:02:00,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:02:02,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:02:03,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:02:04,707 INFO L130 PetriNetUnfolder]: 435/1347 cut-off events. [2022-12-13 20:02:04,707 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 20:02:04,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2109 conditions, 1347 events. 435/1347 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 8199 event pairs, 340 based on Foata normal form. 6/1240 useless extension candidates. Maximal degree in co-relation 2103. Up to 705 conditions per place. [2022-12-13 20:02:04,713 INFO L137 encePairwiseOnDemand]: 755/758 looper letters, 33 selfloop transitions, 5 changer transitions 0/78 dead transitions. [2022-12-13 20:02:04,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 78 transitions, 262 flow [2022-12-13 20:02:04,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:02:04,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 20:02:04,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2254 transitions. [2022-12-13 20:02:04,717 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49560246262093227 [2022-12-13 20:02:04,718 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2254 transitions. [2022-12-13 20:02:04,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2254 transitions. [2022-12-13 20:02:04,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:02:04,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2254 transitions. [2022-12-13 20:02:04,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 375.6666666666667) internal successors, (2254), 6 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:02:04,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 758.0) internal successors, (5306), 7 states have internal predecessors, (5306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:02:04,727 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 758.0) internal successors, (5306), 7 states have internal predecessors, (5306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:02:04,727 INFO L175 Difference]: Start difference. First operand has 78 places, 75 transitions, 174 flow. Second operand 6 states and 2254 transitions. [2022-12-13 20:02:04,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 78 transitions, 262 flow [2022-12-13 20:02:04,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 78 transitions, 258 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 20:02:04,729 INFO L231 Difference]: Finished difference. Result has 85 places, 78 transitions, 212 flow [2022-12-13 20:02:04,729 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=85, PETRI_TRANSITIONS=78} [2022-12-13 20:02:04,729 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, -3 predicate places. [2022-12-13 20:02:04,730 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 78 transitions, 212 flow [2022-12-13 20:02:04,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:02:04,730 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:02:04,730 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:02:04,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 20:02:04,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:04,931 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-12-13 20:02:04,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:02:04,932 INFO L85 PathProgramCache]: Analyzing trace with hash 372869678, now seen corresponding path program 2 times [2022-12-13 20:02:04,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:02:04,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284772661] [2022-12-13 20:02:04,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:04,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:02:05,064 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:02:05,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1685693931] [2022-12-13 20:02:05,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:02:05,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:05,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:02:05,065 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:02:05,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 20:02:05,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 20:02:05,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:02:05,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 20:02:05,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:02:05,528 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 [2022-12-13 20:02:05,540 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 [2022-12-13 20:02:05,559 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:02:05,559 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 [2022-12-13 20:02:05,586 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:02:05,587 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 [2022-12-13 20:02:05,615 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 20:02:05,615 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:02:05,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:02:05,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284772661] [2022-12-13 20:02:05,615 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:02:05,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685693931] [2022-12-13 20:02:05,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685693931] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:02:05,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:02:05,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 20:02:05,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150557614] [2022-12-13 20:02:05,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:02:05,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 20:02:05,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:02:05,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 20:02:05,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:02:06,486 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 758 [2022-12-13 20:02:06,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 78 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 319.3333333333333) internal successors, (1916), 6 states have internal predecessors, (1916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:02:06,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:02:06,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 758 [2022-12-13 20:02:06,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:02:08,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:02:10,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:02:11,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:02:12,983 INFO L130 PetriNetUnfolder]: 1415/3144 cut-off events. [2022-12-13 20:02:12,983 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-12-13 20:02:12,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5545 conditions, 3144 events. 1415/3144 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 19306 event pairs, 686 based on Foata normal form. 0/2880 useless extension candidates. Maximal degree in co-relation 5536. Up to 1693 conditions per place. [2022-12-13 20:02:12,993 INFO L137 encePairwiseOnDemand]: 746/758 looper letters, 113 selfloop transitions, 23 changer transitions 0/163 dead transitions. [2022-12-13 20:02:12,993 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 163 transitions, 662 flow [2022-12-13 20:02:12,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:02:12,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 20:02:12,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2034 transitions. [2022-12-13 20:02:12,997 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4472295514511873 [2022-12-13 20:02:12,997 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2034 transitions. [2022-12-13 20:02:12,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2034 transitions. [2022-12-13 20:02:12,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:02:12,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2034 transitions. [2022-12-13 20:02:13,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 339.0) internal successors, (2034), 6 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:02:13,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 758.0) internal successors, (5306), 7 states have internal predecessors, (5306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:02:13,007 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 758.0) internal successors, (5306), 7 states have internal predecessors, (5306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:02:13,008 INFO L175 Difference]: Start difference. First operand has 85 places, 78 transitions, 212 flow. Second operand 6 states and 2034 transitions. [2022-12-13 20:02:13,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 163 transitions, 662 flow [2022-12-13 20:02:13,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 163 transitions, 648 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 20:02:13,010 INFO L231 Difference]: Finished difference. Result has 94 places, 100 transitions, 356 flow [2022-12-13 20:02:13,010 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=356, PETRI_PLACES=94, PETRI_TRANSITIONS=100} [2022-12-13 20:02:13,011 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 6 predicate places. [2022-12-13 20:02:13,011 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 100 transitions, 356 flow [2022-12-13 20:02:13,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 319.3333333333333) internal successors, (1916), 6 states have internal predecessors, (1916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:02:13,012 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:02:13,012 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:02:13,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 20:02:13,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:13,214 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-12-13 20:02:13,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:02:13,215 INFO L85 PathProgramCache]: Analyzing trace with hash 320598280, now seen corresponding path program 1 times [2022-12-13 20:02:13,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:02:13,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62142603] [2022-12-13 20:02:13,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:13,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:02:13,457 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:02:13,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1665714919] [2022-12-13 20:02:13,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:13,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:13,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:02:13,459 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:02:13,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 20:02:14,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:14,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 4106 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 20:02:14,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:02:14,263 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:02:14,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:02:14,311 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:02:14,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:02:14,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62142603] [2022-12-13 20:02:14,312 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:02:14,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665714919] [2022-12-13 20:02:14,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665714919] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:02:14,312 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:02:14,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-12-13 20:02:14,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487472330] [2022-12-13 20:02:14,312 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:02:14,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 20:02:14,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:02:14,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 20:02:14,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-12-13 20:02:14,344 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 369 out of 758 [2022-12-13 20:02:14,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 100 transitions, 356 flow. Second operand has 12 states, 12 states have (on average 370.6666666666667) internal successors, (4448), 12 states have internal predecessors, (4448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:02:14,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:02:14,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 369 of 758 [2022-12-13 20:02:14,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:02:15,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:02:16,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:02:18,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:02:20,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:02:21,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:02:23,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:02:26,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:02:28,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:02:30,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:02:32,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:02:33,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:02:36,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:02:37,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:02:38,038 INFO L130 PetriNetUnfolder]: 807/2362 cut-off events. [2022-12-13 20:02:38,038 INFO L131 PetriNetUnfolder]: For 391/423 co-relation queries the response was YES. [2022-12-13 20:02:38,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4254 conditions, 2362 events. 807/2362 cut-off events. For 391/423 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 16204 event pairs, 538 based on Foata normal form. 20/2251 useless extension candidates. Maximal degree in co-relation 4240. Up to 1193 conditions per place. [2022-12-13 20:02:38,052 INFO L137 encePairwiseOnDemand]: 755/758 looper letters, 35 selfloop transitions, 11 changer transitions 0/106 dead transitions. [2022-12-13 20:02:38,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 106 transitions, 484 flow [2022-12-13 20:02:38,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 20:02:38,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 20:02:38,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4477 transitions. [2022-12-13 20:02:38,064 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4921943711521548 [2022-12-13 20:02:38,064 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4477 transitions. [2022-12-13 20:02:38,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4477 transitions. [2022-12-13 20:02:38,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:02:38,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4477 transitions. [2022-12-13 20:02:38,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 373.0833333333333) internal successors, (4477), 12 states have internal predecessors, (4477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:02:38,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 758.0) internal successors, (9854), 13 states have internal predecessors, (9854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:02:38,081 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 758.0) internal successors, (9854), 13 states have internal predecessors, (9854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:02:38,081 INFO L175 Difference]: Start difference. First operand has 94 places, 100 transitions, 356 flow. Second operand 12 states and 4477 transitions. [2022-12-13 20:02:38,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 106 transitions, 484 flow [2022-12-13 20:02:38,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 106 transitions, 484 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:02:38,084 INFO L231 Difference]: Finished difference. Result has 111 places, 106 transitions, 452 flow [2022-12-13 20:02:38,085 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=452, PETRI_PLACES=111, PETRI_TRANSITIONS=106} [2022-12-13 20:02:38,085 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 23 predicate places. [2022-12-13 20:02:38,085 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 106 transitions, 452 flow [2022-12-13 20:02:38,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 370.6666666666667) internal successors, (4448), 12 states have internal predecessors, (4448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:02:38,086 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:02:38,087 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:02:38,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 20:02:38,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 20:02:38,288 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-12-13 20:02:38,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:02:38,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1538025736, now seen corresponding path program 2 times [2022-12-13 20:02:38,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:02:38,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570046527] [2022-12-13 20:02:38,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:38,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:02:38,684 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:02:38,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1168856812] [2022-12-13 20:02:38,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:02:38,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:38,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:02:38,685 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:02:38,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 20:02:39,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 20:02:39,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:02:39,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 20:02:39,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:02:39,640 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 [2022-12-13 20:02:39,651 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 [2022-12-13 20:02:39,671 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:02:39,672 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 [2022-12-13 20:02:39,698 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:02:39,699 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 [2022-12-13 20:02:39,722 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-12-13 20:02:39,722 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:02:39,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:02:39,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570046527] [2022-12-13 20:02:39,723 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:02:39,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168856812] [2022-12-13 20:02:39,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168856812] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:02:39,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:02:39,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 20:02:39,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220534396] [2022-12-13 20:02:39,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:02:39,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 20:02:39,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:02:39,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 20:02:39,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:02:40,601 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 758 [2022-12-13 20:02:40,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 106 transitions, 452 flow. Second operand has 6 states, 6 states have (on average 319.6666666666667) internal successors, (1918), 6 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:02:40,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:02:40,603 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 758 [2022-12-13 20:02:40,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:02:42,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:02:45,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:02:47,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:02:49,078 INFO L130 PetriNetUnfolder]: 2027/4540 cut-off events. [2022-12-13 20:02:49,078 INFO L131 PetriNetUnfolder]: For 821/878 co-relation queries the response was YES. [2022-12-13 20:02:49,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9039 conditions, 4540 events. 2027/4540 cut-off events. For 821/878 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 31166 event pairs, 874 based on Foata normal form. 23/4290 useless extension candidates. Maximal degree in co-relation 9018. Up to 2437 conditions per place. [2022-12-13 20:02:49,097 INFO L137 encePairwiseOnDemand]: 746/758 looper letters, 138 selfloop transitions, 31 changer transitions 0/199 dead transitions. [2022-12-13 20:02:49,097 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 199 transitions, 1066 flow [2022-12-13 20:02:49,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:02:49,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 20:02:49,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2026 transitions. [2022-12-13 20:02:49,100 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44547053649956025 [2022-12-13 20:02:49,100 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2026 transitions. [2022-12-13 20:02:49,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2026 transitions. [2022-12-13 20:02:49,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:02:49,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2026 transitions. [2022-12-13 20:02:49,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 337.6666666666667) internal successors, (2026), 6 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:02:49,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 758.0) internal successors, (5306), 7 states have internal predecessors, (5306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:02:49,116 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 758.0) internal successors, (5306), 7 states have internal predecessors, (5306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:02:49,117 INFO L175 Difference]: Start difference. First operand has 111 places, 106 transitions, 452 flow. Second operand 6 states and 2026 transitions. [2022-12-13 20:02:49,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 199 transitions, 1066 flow [2022-12-13 20:02:49,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 199 transitions, 1018 flow, removed 19 selfloop flow, removed 5 redundant places. [2022-12-13 20:02:49,128 INFO L231 Difference]: Finished difference. Result has 116 places, 136 transitions, 662 flow [2022-12-13 20:02:49,128 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=662, PETRI_PLACES=116, PETRI_TRANSITIONS=136} [2022-12-13 20:02:49,129 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 28 predicate places. [2022-12-13 20:02:49,129 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 136 transitions, 662 flow [2022-12-13 20:02:49,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 319.6666666666667) internal successors, (1918), 6 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:02:49,129 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:02:49,129 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:02:49,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 20:02:49,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 20:02:49,330 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-12-13 20:02:49,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:02:49,330 INFO L85 PathProgramCache]: Analyzing trace with hash -416008605, now seen corresponding path program 1 times [2022-12-13 20:02:49,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:02:49,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297282262] [2022-12-13 20:02:49,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:49,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:02:49,644 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:02:49,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1441347439] [2022-12-13 20:02:49,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:49,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:49,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:02:49,645 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:02:49,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 20:02:51,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:51,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 9773 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 20:02:51,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:02:51,884 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:02:51,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:02:52,048 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:02:52,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:02:52,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297282262] [2022-12-13 20:02:52,048 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:02:52,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441347439] [2022-12-13 20:02:52,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441347439] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:02:52,048 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:02:52,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-12-13 20:02:52,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223535291] [2022-12-13 20:02:52,049 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:02:52,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 20:02:52,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:02:52,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 20:02:52,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-12-13 20:02:52,125 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 369 out of 758 [2022-12-13 20:02:52,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 136 transitions, 662 flow. Second operand has 24 states, 24 states have (on average 370.3333333333333) internal successors, (8888), 24 states have internal predecessors, (8888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:02:52,129 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:02:52,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 369 of 758 [2022-12-13 20:02:52,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:02:53,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:02:54,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:02:55,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:02:57,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:02:59,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:03:00,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:03:02,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:03:03,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:03:05,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:03:07,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:03:09,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:03:12,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:03:13,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:03:16,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:03:17,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:03:19,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:03:22,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:03:23,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:03:25,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:03:26,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:03:27,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:03:29,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:03:31,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:03:33,042 INFO L130 PetriNetUnfolder]: 1293/3640 cut-off events. [2022-12-13 20:03:33,042 INFO L131 PetriNetUnfolder]: For 2309/2401 co-relation queries the response was YES. [2022-12-13 20:03:33,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7445 conditions, 3640 events. 1293/3640 cut-off events. For 2309/2401 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 27474 event pairs, 790 based on Foata normal form. 52/3571 useless extension candidates. Maximal degree in co-relation 7420. Up to 1839 conditions per place. [2022-12-13 20:03:33,055 INFO L137 encePairwiseOnDemand]: 755/758 looper letters, 37 selfloop transitions, 23 changer transitions 0/148 dead transitions. [2022-12-13 20:03:33,055 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 148 transitions, 854 flow [2022-12-13 20:03:33,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 20:03:33,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-12-13 20:03:33,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 8923 transitions. [2022-12-13 20:03:33,063 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49049032541776605 [2022-12-13 20:03:33,063 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 8923 transitions. [2022-12-13 20:03:33,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 8923 transitions. [2022-12-13 20:03:33,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:03:33,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 8923 transitions. [2022-12-13 20:03:33,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 371.7916666666667) internal successors, (8923), 24 states have internal predecessors, (8923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:03:33,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 758.0) internal successors, (18950), 25 states have internal predecessors, (18950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:03:33,088 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 758.0) internal successors, (18950), 25 states have internal predecessors, (18950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:03:33,088 INFO L175 Difference]: Start difference. First operand has 116 places, 136 transitions, 662 flow. Second operand 24 states and 8923 transitions. [2022-12-13 20:03:33,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 148 transitions, 854 flow [2022-12-13 20:03:33,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 148 transitions, 854 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:03:33,094 INFO L231 Difference]: Finished difference. Result has 151 places, 148 transitions, 854 flow [2022-12-13 20:03:33,094 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=854, PETRI_PLACES=151, PETRI_TRANSITIONS=148} [2022-12-13 20:03:33,094 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 63 predicate places. [2022-12-13 20:03:33,094 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 148 transitions, 854 flow [2022-12-13 20:03:33,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 370.3333333333333) internal successors, (8888), 24 states have internal predecessors, (8888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:03:33,096 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:03:33,096 INFO L209 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:03:33,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 20:03:33,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:03:33,297 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-12-13 20:03:33,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:03:33,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1204869533, now seen corresponding path program 2 times [2022-12-13 20:03:33,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:03:33,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333541021] [2022-12-13 20:03:33,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:03:33,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:03:33,879 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:03:33,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [589572460] [2022-12-13 20:03:33,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:03:33,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:03:33,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:03:33,880 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:03:33,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 20:03:36,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 20:03:36,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:03:36,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 20:03:36,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:03:36,118 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 [2022-12-13 20:03:36,126 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 [2022-12-13 20:03:36,140 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:03:36,140 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 [2022-12-13 20:03:36,159 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:03:36,159 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 [2022-12-13 20:03:36,177 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2022-12-13 20:03:36,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:03:36,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:03:36,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333541021] [2022-12-13 20:03:36,178 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:03:36,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589572460] [2022-12-13 20:03:36,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589572460] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:03:36,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:03:36,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 20:03:36,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568064254] [2022-12-13 20:03:36,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:03:36,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 20:03:36,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:03:36,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 20:03:36,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:03:36,772 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 758 [2022-12-13 20:03:36,774 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 148 transitions, 854 flow. Second operand has 6 states, 6 states have (on average 318.6666666666667) internal successors, (1912), 6 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:03:36,775 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:03:36,775 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 758 [2022-12-13 20:03:36,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:03:38,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:03:39,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:03:41,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:03:42,952 INFO L130 PetriNetUnfolder]: 2623/5534 cut-off events. [2022-12-13 20:03:42,952 INFO L131 PetriNetUnfolder]: For 2640/2748 co-relation queries the response was YES. [2022-12-13 20:03:42,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12762 conditions, 5534 events. 2623/5534 cut-off events. For 2640/2748 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 37159 event pairs, 1022 based on Foata normal form. 40/5367 useless extension candidates. Maximal degree in co-relation 12724. Up to 2989 conditions per place. [2022-12-13 20:03:42,974 INFO L137 encePairwiseOnDemand]: 747/758 looper letters, 178 selfloop transitions, 55 changer transitions 0/266 dead transitions. [2022-12-13 20:03:42,974 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 266 transitions, 1808 flow [2022-12-13 20:03:42,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:03:42,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 20:03:42,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2025 transitions. [2022-12-13 20:03:42,977 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44525065963060684 [2022-12-13 20:03:42,977 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2025 transitions. [2022-12-13 20:03:42,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2025 transitions. [2022-12-13 20:03:42,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:03:42,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2025 transitions. [2022-12-13 20:03:42,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 337.5) internal successors, (2025), 6 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:03:42,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 758.0) internal successors, (5306), 7 states have internal predecessors, (5306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:03:42,982 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 758.0) internal successors, (5306), 7 states have internal predecessors, (5306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:03:42,982 INFO L175 Difference]: Start difference. First operand has 151 places, 148 transitions, 854 flow. Second operand 6 states and 2025 transitions. [2022-12-13 20:03:42,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 266 transitions, 1808 flow [2022-12-13 20:03:42,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 266 transitions, 1712 flow, removed 37 selfloop flow, removed 11 redundant places. [2022-12-13 20:03:42,992 INFO L231 Difference]: Finished difference. Result has 150 places, 197 transitions, 1312 flow [2022-12-13 20:03:42,992 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=758, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1312, PETRI_PLACES=150, PETRI_TRANSITIONS=197} [2022-12-13 20:03:42,993 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, 62 predicate places. [2022-12-13 20:03:42,993 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 197 transitions, 1312 flow [2022-12-13 20:03:42,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 318.6666666666667) internal successors, (1912), 6 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:03:42,993 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:03:42,993 INFO L209 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:03:43,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 20:03:43,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:03:43,195 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-12-13 20:03:43,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:03:43,196 INFO L85 PathProgramCache]: Analyzing trace with hash -321815351, now seen corresponding path program 1 times [2022-12-13 20:03:43,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:03:43,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649477325] [2022-12-13 20:03:43,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:03:43,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:03:43,889 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:03:43,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1648031957] [2022-12-13 20:03:43,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:03:43,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:03:43,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:03:43,908 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:03:43,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85f6606-2cc2-46cb-b3bc-06893e89fc58/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 20:03:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:03:49,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 21115 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 20:03:49,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:03:49,426 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:03:49,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:03:49,747 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:03:49,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:03:49,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649477325] [2022-12-13 20:03:49,748 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:03:49,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648031957] [2022-12-13 20:03:49,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648031957] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:03:49,748 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:03:49,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2022-12-13 20:03:49,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2945307] [2022-12-13 20:03:49,748 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:03:49,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-13 20:03:49,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:03:49,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-13 20:03:49,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-12-13 20:03:49,839 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 369 out of 758 [2022-12-13 20:03:49,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 197 transitions, 1312 flow. Second operand has 32 states, 32 states have (on average 370.34375) internal successors, (11851), 32 states have internal predecessors, (11851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:03:49,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:03:49,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 369 of 758 [2022-12-13 20:03:49,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:03:52,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:03:53,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:03:55,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:03:57,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:03:59,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:04:00,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:04:01,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:04:02,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:04:04,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:04:06,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:04:08,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:04:09,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:04:11,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:04:13,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:04:15,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:04:17,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:04:19,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:04:20,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:04:22,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:04:24,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:04:25,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-13 20:04:27,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers []