./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a 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_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 44de34ccc7195f8ba562241ad79de4cb2add35f6ad2c59de465184820d6f6382 --- 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-38b53e6 [2022-11-25 17:54:48,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:54:48,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:54:48,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:54:48,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:54:48,345 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:54:48,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:54:48,348 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:54:48,350 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:54:48,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:54:48,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:54:48,353 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:54:48,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:54:48,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:54:48,356 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:54:48,358 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:54:48,359 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:54:48,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:54:48,362 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:54:48,364 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:54:48,366 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:54:48,368 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:54:48,369 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:54:48,370 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:54:48,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:54:48,375 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:54:48,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:54:48,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:54:48,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:54:48,379 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:54:48,379 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:54:48,380 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:54:48,381 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:54:48,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:54:48,383 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:54:48,384 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:54:48,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:54:48,385 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:54:48,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:54:48,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:54:48,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:54:48,389 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 17:54:48,414 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:54:48,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:54:48,415 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:54:48,415 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:54:48,416 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:54:48,416 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:54:48,417 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:54:48,417 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:54:48,418 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:54:48,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:54:48,418 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:54:48,418 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:54:48,419 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:54:48,419 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:54:48,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:54:48,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:54:48,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:54:48,420 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:54:48,420 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 17:54:48,420 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:54:48,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:54:48,421 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:54:48,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:54:48,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:54:48,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:54:48,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:54:48,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:54:48,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:54:48,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:54:48,423 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:54:48,423 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:54:48,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:54:48,423 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:54:48,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:54:48,424 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:54:48,424 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:54:48,424 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_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44de34ccc7195f8ba562241ad79de4cb2add35f6ad2c59de465184820d6f6382 [2022-11-25 17:54:48,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:54:48,706 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:54:48,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:54:48,709 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:54:48,710 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:54:48,711 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-3.i [2022-11-25 17:54:51,894 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:54:52,282 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:54:52,284 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-3.i [2022-11-25 17:54:52,303 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/data/5c64c6bf2/322ee981ffd44c92bf494e6a227003a5/FLAG417256c54 [2022-11-25 17:54:52,321 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/data/5c64c6bf2/322ee981ffd44c92bf494e6a227003a5 [2022-11-25 17:54:52,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:54:52,329 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:54:52,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:54:52,333 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:54:52,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:54:52,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:54:52" (1/1) ... [2022-11-25 17:54:52,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cef41c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:52, skipping insertion in model container [2022-11-25 17:54:52,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:54:52" (1/1) ... [2022-11-25 17:54:52,349 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:54:52,429 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:54:52,594 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-3.i[818,831] [2022-11-25 17:54:53,066 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:53,067 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:53,067 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:53,068 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:53,079 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:53,079 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:53,082 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:54:53,095 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:54:53,111 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-3.i[818,831] [2022-11-25 17:54:53,160 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:53,170 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:53,171 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:53,177 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:53,180 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:53,181 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:53,184 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:54:53,269 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:54:53,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:53 WrapperNode [2022-11-25 17:54:53,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:54:53,271 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:54:53,271 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:54:53,271 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:54:53,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:53" (1/1) ... [2022-11-25 17:54:53,313 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:53" (1/1) ... [2022-11-25 17:54:53,354 INFO L138 Inliner]: procedures = 365, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 69 [2022-11-25 17:54:53,354 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:54:53,357 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:54:53,357 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:54:53,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:54:53,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:53" (1/1) ... [2022-11-25 17:54:53,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:53" (1/1) ... [2022-11-25 17:54:53,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:53" (1/1) ... [2022-11-25 17:54:53,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:53" (1/1) ... [2022-11-25 17:54:53,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:53" (1/1) ... [2022-11-25 17:54:53,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:53" (1/1) ... [2022-11-25 17:54:53,417 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:53" (1/1) ... [2022-11-25 17:54:53,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:53" (1/1) ... [2022-11-25 17:54:53,423 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:54:53,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:54:53,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:54:53,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:54:53,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:53" (1/1) ... [2022-11-25 17:54:53,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:54:53,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:54:53,484 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:54:53,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:54:53,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 17:54:53,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:54:53,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:54:53,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 17:54:53,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:54:53,533 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_datarace [2022-11-25 17:54:53,533 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_datarace [2022-11-25 17:54:53,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:54:53,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:54:53,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:54:53,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:54:53,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:54:53,536 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:54:53,743 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:54:53,746 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:54:54,076 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:54:54,115 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:54:54,116 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 17:54:54,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:54:54 BoogieIcfgContainer [2022-11-25 17:54:54,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:54:54,121 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:54:54,121 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:54:54,124 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:54:54,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:54:52" (1/3) ... [2022-11-25 17:54:54,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b5a940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:54:54, skipping insertion in model container [2022-11-25 17:54:54,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:53" (2/3) ... [2022-11-25 17:54:54,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b5a940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:54:54, skipping insertion in model container [2022-11-25 17:54:54,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:54:54" (3/3) ... [2022-11-25 17:54:54,128 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-3.i [2022-11-25 17:54:54,137 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:54:54,148 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:54:54,149 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-25 17:54:54,149 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:54:54,205 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-25 17:54:54,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 104 transitions, 216 flow [2022-11-25 17:54:54,297 INFO L130 PetriNetUnfolder]: 7/103 cut-off events. [2022-11-25 17:54:54,297 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 17:54:54,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 103 events. 7/103 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 116 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-11-25 17:54:54,304 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 104 transitions, 216 flow [2022-11-25 17:54:54,308 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 80 transitions, 163 flow [2022-11-25 17:54:54,313 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:54:54,332 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 80 transitions, 163 flow [2022-11-25 17:54:54,335 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 80 transitions, 163 flow [2022-11-25 17:54:54,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 80 transitions, 163 flow [2022-11-25 17:54:54,361 INFO L130 PetriNetUnfolder]: 5/80 cut-off events. [2022-11-25 17:54:54,361 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:54:54,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 80 events. 5/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 92 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-11-25 17:54:54,364 INFO L119 LiptonReduction]: Number of co-enabled transitions 1344 [2022-11-25 17:54:57,034 INFO L134 LiptonReduction]: Checked pairs total: 1365 [2022-11-25 17:54:57,034 INFO L136 LiptonReduction]: Total number of compositions: 81 [2022-11-25 17:54:57,051 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:54:57,058 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;@24b7f506, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:54:57,058 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-25 17:54:57,062 INFO L130 PetriNetUnfolder]: 1/5 cut-off events. [2022-11-25 17:54:57,062 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:54:57,062 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:54:57,063 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 17:54:57,064 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread_function_dataraceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 17:54:57,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:54:57,069 INFO L85 PathProgramCache]: Analyzing trace with hash 11680197, now seen corresponding path program 1 times [2022-11-25 17:54:57,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:54:57,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533422744] [2022-11-25 17:54:57,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:54:57,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:54:57,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:54:57,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:54:57,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:54:57,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533422744] [2022-11-25 17:54:57,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533422744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:54:57,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:54:57,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:54:57,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679595983] [2022-11-25 17:54:57,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:54:57,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:54:57,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:54:57,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:54:57,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:54:57,448 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 185 [2022-11-25 17:54:57,454 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 37 flow. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:57,454 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:54:57,454 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 185 [2022-11-25 17:54:57,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:54:57,555 INFO L130 PetriNetUnfolder]: 70/130 cut-off events. [2022-11-25 17:54:57,556 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:54:57,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 130 events. 70/130 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 439 event pairs, 12 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 256. Up to 112 conditions per place. [2022-11-25 17:54:57,562 INFO L137 encePairwiseOnDemand]: 174/185 looper letters, 20 selfloop transitions, 6 changer transitions 0/26 dead transitions. [2022-11-25 17:54:57,563 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 26 transitions, 107 flow [2022-11-25 17:54:57,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:54:57,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:54:57,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 299 transitions. [2022-11-25 17:54:57,587 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5387387387387388 [2022-11-25 17:54:57,588 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 299 transitions. [2022-11-25 17:54:57,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 299 transitions. [2022-11-25 17:54:57,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:54:57,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 299 transitions. [2022-11-25 17:54:57,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:57,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:57,615 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:57,617 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 37 flow. Second operand 3 states and 299 transitions. [2022-11-25 17:54:57,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 26 transitions, 107 flow [2022-11-25 17:54:57,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 26 transitions, 106 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:54:57,627 INFO L231 Difference]: Finished difference. Result has 20 places, 21 transitions, 80 flow [2022-11-25 17:54:57,630 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=20, PETRI_TRANSITIONS=21} [2022-11-25 17:54:57,635 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 1 predicate places. [2022-11-25 17:54:57,636 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 21 transitions, 80 flow [2022-11-25 17:54:57,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:57,636 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:54:57,636 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 17:54:57,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:54:57,637 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 17:54:57,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:54:57,638 INFO L85 PathProgramCache]: Analyzing trace with hash 11680628, now seen corresponding path program 1 times [2022-11-25 17:54:57,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:54:57,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317786480] [2022-11-25 17:54:57,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:54:57,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:54:57,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:54:57,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:54:57,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:54:57,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317786480] [2022-11-25 17:54:57,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317786480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:54:57,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:54:57,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:54:57,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97099999] [2022-11-25 17:54:57,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:54:57,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:54:57,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:54:57,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:54:57,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:54:57,711 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 185 [2022-11-25 17:54:57,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 21 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:57,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:54:57,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 185 [2022-11-25 17:54:57,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:54:57,797 INFO L130 PetriNetUnfolder]: 81/158 cut-off events. [2022-11-25 17:54:57,798 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-25 17:54:57,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 158 events. 81/158 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 650 event pairs, 31 based on Foata normal form. 11/89 useless extension candidates. Maximal degree in co-relation 430. Up to 109 conditions per place. [2022-11-25 17:54:57,800 INFO L137 encePairwiseOnDemand]: 181/185 looper letters, 31 selfloop transitions, 3 changer transitions 0/34 dead transitions. [2022-11-25 17:54:57,800 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 34 transitions, 196 flow [2022-11-25 17:54:57,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:54:57,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:54:57,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2022-11-25 17:54:57,805 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5225225225225225 [2022-11-25 17:54:57,805 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 290 transitions. [2022-11-25 17:54:57,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 290 transitions. [2022-11-25 17:54:57,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:54:57,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 290 transitions. [2022-11-25 17:54:57,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:57,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:57,812 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:57,812 INFO L175 Difference]: Start difference. First operand has 20 places, 21 transitions, 80 flow. Second operand 3 states and 290 transitions. [2022-11-25 17:54:57,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 34 transitions, 196 flow [2022-11-25 17:54:57,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 34 transitions, 188 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:54:57,815 INFO L231 Difference]: Finished difference. Result has 22 places, 21 transitions, 89 flow [2022-11-25 17:54:57,815 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=22, PETRI_TRANSITIONS=21} [2022-11-25 17:54:57,816 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 3 predicate places. [2022-11-25 17:54:57,816 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 21 transitions, 89 flow [2022-11-25 17:54:57,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:57,817 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:54:57,817 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:54:57,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:54:57,817 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread_function_dataraceErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 17:54:57,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:54:57,823 INFO L85 PathProgramCache]: Analyzing trace with hash 362086470, now seen corresponding path program 1 times [2022-11-25 17:54:57,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:54:57,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548983408] [2022-11-25 17:54:57,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:54:57,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:54:57,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:54:57,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:54:57,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:54:57,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548983408] [2022-11-25 17:54:57,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548983408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:54:57,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:54:57,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:54:57,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913880508] [2022-11-25 17:54:57,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:54:57,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:54:57,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:54:57,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:54:57,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:54:57,898 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 185 [2022-11-25 17:54:57,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 21 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:57,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:54:57,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 185 [2022-11-25 17:54:57,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:54:57,981 INFO L130 PetriNetUnfolder]: 95/190 cut-off events. [2022-11-25 17:54:57,982 INFO L131 PetriNetUnfolder]: For 82/82 co-relation queries the response was YES. [2022-11-25 17:54:57,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 588 conditions, 190 events. 95/190 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 787 event pairs, 47 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 576. Up to 143 conditions per place. [2022-11-25 17:54:57,988 INFO L137 encePairwiseOnDemand]: 180/185 looper letters, 27 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2022-11-25 17:54:57,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 30 transitions, 191 flow [2022-11-25 17:54:57,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:54:57,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:54:57,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 293 transitions. [2022-11-25 17:54:57,991 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.527927927927928 [2022-11-25 17:54:57,991 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 293 transitions. [2022-11-25 17:54:57,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 293 transitions. [2022-11-25 17:54:57,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:54:57,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 293 transitions. [2022-11-25 17:54:57,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:57,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:57,994 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:57,995 INFO L175 Difference]: Start difference. First operand has 22 places, 21 transitions, 89 flow. Second operand 3 states and 293 transitions. [2022-11-25 17:54:57,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 30 transitions, 191 flow [2022-11-25 17:54:57,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 30 transitions, 186 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:54:57,999 INFO L231 Difference]: Finished difference. Result has 24 places, 20 transitions, 99 flow [2022-11-25 17:54:57,999 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=24, PETRI_TRANSITIONS=20} [2022-11-25 17:54:58,001 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 5 predicate places. [2022-11-25 17:54:58,001 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 20 transitions, 99 flow [2022-11-25 17:54:58,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:58,002 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:54:58,002 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:54:58,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:54:58,004 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 17:54:58,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:54:58,005 INFO L85 PathProgramCache]: Analyzing trace with hash 362100252, now seen corresponding path program 1 times [2022-11-25 17:54:58,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:54:58,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244969485] [2022-11-25 17:54:58,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:54:58,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:54:58,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:54:58,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:54:58,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:54:58,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244969485] [2022-11-25 17:54:58,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244969485] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:54:58,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931348961] [2022-11-25 17:54:58,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:54:58,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:54:58,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:54:58,122 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:54:58,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:54:58,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:54:58,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:54:58,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:54:58,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:54:58,296 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:54:58,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931348961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:54:58,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:54:58,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-25 17:54:58,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033690512] [2022-11-25 17:54:58,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:54:58,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:54:58,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:54:58,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:54:58,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:54:58,313 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 185 [2022-11-25 17:54:58,327 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 99 flow. Second operand has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:58,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:54:58,328 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 185 [2022-11-25 17:54:58,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:54:58,448 INFO L130 PetriNetUnfolder]: 84/182 cut-off events. [2022-11-25 17:54:58,449 INFO L131 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2022-11-25 17:54:58,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 613 conditions, 182 events. 84/182 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 744 event pairs, 18 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 600. Up to 126 conditions per place. [2022-11-25 17:54:58,451 INFO L137 encePairwiseOnDemand]: 176/185 looper letters, 26 selfloop transitions, 9 changer transitions 0/35 dead transitions. [2022-11-25 17:54:58,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 35 transitions, 238 flow [2022-11-25 17:54:58,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:54:58,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:54:58,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 390 transitions. [2022-11-25 17:54:58,453 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.527027027027027 [2022-11-25 17:54:58,453 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 390 transitions. [2022-11-25 17:54:58,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 390 transitions. [2022-11-25 17:54:58,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:54:58,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 390 transitions. [2022-11-25 17:54:58,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.5) internal successors, (390), 4 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:58,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:58,458 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:58,458 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 99 flow. Second operand 4 states and 390 transitions. [2022-11-25 17:54:58,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 35 transitions, 238 flow [2022-11-25 17:54:58,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 35 transitions, 234 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:54:58,461 INFO L231 Difference]: Finished difference. Result has 28 places, 25 transitions, 169 flow [2022-11-25 17:54:58,461 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=28, PETRI_TRANSITIONS=25} [2022-11-25 17:54:58,462 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 9 predicate places. [2022-11-25 17:54:58,462 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 25 transitions, 169 flow [2022-11-25 17:54:58,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:58,463 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:54:58,463 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:54:58,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:54:58,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:54:58,669 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 17:54:58,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:54:58,670 INFO L85 PathProgramCache]: Analyzing trace with hash 362100253, now seen corresponding path program 1 times [2022-11-25 17:54:58,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:54:58,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206895551] [2022-11-25 17:54:58,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:54:58,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:54:58,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:54:58,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:54:58,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:54:58,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206895551] [2022-11-25 17:54:58,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206895551] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:54:58,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205765450] [2022-11-25 17:54:58,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:54:58,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:54:58,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:54:58,718 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:54:58,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:54:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:54:58,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:54:58,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:54:58,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:54:58,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:54:58,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:54:58,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205765450] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:54:58,870 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:54:58,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-25 17:54:58,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602529296] [2022-11-25 17:54:58,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:54:58,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:54:58,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:54:58,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:54:58,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:54:58,911 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 185 [2022-11-25 17:54:58,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 25 transitions, 169 flow. Second operand has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:58,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:54:58,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 185 [2022-11-25 17:54:58,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:54:59,068 INFO L130 PetriNetUnfolder]: 128/276 cut-off events. [2022-11-25 17:54:59,069 INFO L131 PetriNetUnfolder]: For 297/297 co-relation queries the response was YES. [2022-11-25 17:54:59,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1106 conditions, 276 events. 128/276 cut-off events. For 297/297 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1266 event pairs, 6 based on Foata normal form. 26/243 useless extension candidates. Maximal degree in co-relation 1090. Up to 186 conditions per place. [2022-11-25 17:54:59,072 INFO L137 encePairwiseOnDemand]: 174/185 looper letters, 38 selfloop transitions, 31 changer transitions 0/69 dead transitions. [2022-11-25 17:54:59,072 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 69 transitions, 563 flow [2022-11-25 17:54:59,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:54:59,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:54:59,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 687 transitions. [2022-11-25 17:54:59,074 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5305019305019305 [2022-11-25 17:54:59,075 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 687 transitions. [2022-11-25 17:54:59,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 687 transitions. [2022-11-25 17:54:59,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:54:59,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 687 transitions. [2022-11-25 17:54:59,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 98.14285714285714) internal successors, (687), 7 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:59,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 185.0) internal successors, (1480), 8 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:59,080 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 185.0) internal successors, (1480), 8 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:59,081 INFO L175 Difference]: Start difference. First operand has 28 places, 25 transitions, 169 flow. Second operand 7 states and 687 transitions. [2022-11-25 17:54:59,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 69 transitions, 563 flow [2022-11-25 17:54:59,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 69 transitions, 560 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:54:59,089 INFO L231 Difference]: Finished difference. Result has 38 places, 53 transitions, 535 flow [2022-11-25 17:54:59,089 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=535, PETRI_PLACES=38, PETRI_TRANSITIONS=53} [2022-11-25 17:54:59,093 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 19 predicate places. [2022-11-25 17:54:59,093 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 53 transitions, 535 flow [2022-11-25 17:54:59,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:59,094 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:54:59,094 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:54:59,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-25 17:54:59,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:54:59,300 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 17:54:59,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:54:59,300 INFO L85 PathProgramCache]: Analyzing trace with hash 362100288, now seen corresponding path program 1 times [2022-11-25 17:54:59,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:54:59,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621020108] [2022-11-25 17:54:59,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:54:59,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:54:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:54:59,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:54:59,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:54:59,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621020108] [2022-11-25 17:54:59,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621020108] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:54:59,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:54:59,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:54:59,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328090515] [2022-11-25 17:54:59,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:54:59,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:54:59,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:54:59,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:54:59,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:54:59,348 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 185 [2022-11-25 17:54:59,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 53 transitions, 535 flow. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:59,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:54:59,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 185 [2022-11-25 17:54:59,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:54:59,429 INFO L130 PetriNetUnfolder]: 105/231 cut-off events. [2022-11-25 17:54:59,429 INFO L131 PetriNetUnfolder]: For 597/597 co-relation queries the response was YES. [2022-11-25 17:54:59,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1249 conditions, 231 events. 105/231 cut-off events. For 597/597 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1035 event pairs, 11 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 1227. Up to 219 conditions per place. [2022-11-25 17:54:59,432 INFO L137 encePairwiseOnDemand]: 183/185 looper letters, 57 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2022-11-25 17:54:59,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 58 transitions, 688 flow [2022-11-25 17:54:59,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:54:59,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:54:59,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 285 transitions. [2022-11-25 17:54:59,435 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2022-11-25 17:54:59,435 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 285 transitions. [2022-11-25 17:54:59,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 285 transitions. [2022-11-25 17:54:59,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:54:59,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 285 transitions. [2022-11-25 17:54:59,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:59,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:59,441 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:59,441 INFO L175 Difference]: Start difference. First operand has 38 places, 53 transitions, 535 flow. Second operand 3 states and 285 transitions. [2022-11-25 17:54:59,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 58 transitions, 688 flow [2022-11-25 17:54:59,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 58 transitions, 646 flow, removed 19 selfloop flow, removed 1 redundant places. [2022-11-25 17:54:59,450 INFO L231 Difference]: Finished difference. Result has 38 places, 48 transitions, 454 flow [2022-11-25 17:54:59,450 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=454, PETRI_PLACES=38, PETRI_TRANSITIONS=48} [2022-11-25 17:54:59,452 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 19 predicate places. [2022-11-25 17:54:59,453 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 48 transitions, 454 flow [2022-11-25 17:54:59,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:59,453 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:54:59,454 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 17:54:59,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:54:59,454 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread_function_dataraceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 17:54:59,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:54:59,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1660220526, now seen corresponding path program 1 times [2022-11-25 17:54:59,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:54:59,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535045019] [2022-11-25 17:54:59,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:54:59,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:54:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:54:59,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:54:59,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:54:59,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535045019] [2022-11-25 17:54:59,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535045019] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:54:59,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586138231] [2022-11-25 17:54:59,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:54:59,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:54:59,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:54:59,624 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:54:59,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 17:54:59,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:54:59,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:54:59,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:54:59,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:54:59,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:54:59,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:54:59,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586138231] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:54:59,792 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:54:59,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2022-11-25 17:54:59,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823991570] [2022-11-25 17:54:59,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:54:59,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 17:54:59,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:54:59,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 17:54:59,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:54:59,844 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 185 [2022-11-25 17:54:59,845 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 48 transitions, 454 flow. Second operand has 10 states, 10 states have (on average 85.7) internal successors, (857), 10 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:59,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:54:59,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 185 [2022-11-25 17:54:59,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:55:00,267 INFO L130 PetriNetUnfolder]: 241/465 cut-off events. [2022-11-25 17:55:00,268 INFO L131 PetriNetUnfolder]: For 1474/1474 co-relation queries the response was YES. [2022-11-25 17:55:00,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2413 conditions, 465 events. 241/465 cut-off events. For 1474/1474 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2177 event pairs, 9 based on Foata normal form. 36/431 useless extension candidates. Maximal degree in co-relation 2391. Up to 206 conditions per place. [2022-11-25 17:55:00,274 INFO L137 encePairwiseOnDemand]: 175/185 looper letters, 62 selfloop transitions, 101 changer transitions 0/163 dead transitions. [2022-11-25 17:55:00,275 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 163 transitions, 1696 flow [2022-11-25 17:55:00,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-25 17:55:00,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-25 17:55:00,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1981 transitions. [2022-11-25 17:55:00,281 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4867321867321867 [2022-11-25 17:55:00,281 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1981 transitions. [2022-11-25 17:55:00,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1981 transitions. [2022-11-25 17:55:00,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:55:00,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1981 transitions. [2022-11-25 17:55:00,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 90.04545454545455) internal successors, (1981), 22 states have internal predecessors, (1981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:00,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 185.0) internal successors, (4255), 23 states have internal predecessors, (4255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:00,295 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 185.0) internal successors, (4255), 23 states have internal predecessors, (4255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:00,296 INFO L175 Difference]: Start difference. First operand has 38 places, 48 transitions, 454 flow. Second operand 22 states and 1981 transitions. [2022-11-25 17:55:00,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 163 transitions, 1696 flow [2022-11-25 17:55:00,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 163 transitions, 1690 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:55:00,309 INFO L231 Difference]: Finished difference. Result has 64 places, 122 transitions, 1522 flow [2022-11-25 17:55:00,309 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1522, PETRI_PLACES=64, PETRI_TRANSITIONS=122} [2022-11-25 17:55:00,310 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 45 predicate places. [2022-11-25 17:55:00,310 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 122 transitions, 1522 flow [2022-11-25 17:55:00,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 85.7) internal successors, (857), 10 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:00,316 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:55:00,316 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 17:55:00,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 17:55:00,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:55:00,522 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread_function_dataraceErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 17:55:00,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:55:00,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1660220527, now seen corresponding path program 1 times [2022-11-25 17:55:00,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:55:00,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930320771] [2022-11-25 17:55:00,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:55:00,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:55:00,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:55:00,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:55:00,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:55:00,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930320771] [2022-11-25 17:55:00,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930320771] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:55:00,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610650924] [2022-11-25 17:55:00,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:55:00,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:55:00,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:55:00,605 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:55:00,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 17:55:00,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:55:00,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 17:55:00,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:55:00,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:55:00,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:55:00,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610650924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:55:00,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:55:00,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2022-11-25 17:55:00,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142593029] [2022-11-25 17:55:00,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:55:00,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:55:00,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:55:00,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:55:00,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:55:00,749 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 185 [2022-11-25 17:55:00,750 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 122 transitions, 1522 flow. Second operand has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:00,750 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:55:00,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 185 [2022-11-25 17:55:00,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:55:00,858 INFO L130 PetriNetUnfolder]: 168/327 cut-off events. [2022-11-25 17:55:00,859 INFO L131 PetriNetUnfolder]: For 2063/2063 co-relation queries the response was YES. [2022-11-25 17:55:00,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2137 conditions, 327 events. 168/327 cut-off events. For 2063/2063 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1347 event pairs, 28 based on Foata normal form. 57/334 useless extension candidates. Maximal degree in co-relation 2108. Up to 292 conditions per place. [2022-11-25 17:55:00,863 INFO L137 encePairwiseOnDemand]: 180/185 looper letters, 84 selfloop transitions, 7 changer transitions 0/91 dead transitions. [2022-11-25 17:55:00,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 91 transitions, 1317 flow [2022-11-25 17:55:00,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:55:00,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:55:00,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 357 transitions. [2022-11-25 17:55:00,865 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48243243243243245 [2022-11-25 17:55:00,865 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 357 transitions. [2022-11-25 17:55:00,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 357 transitions. [2022-11-25 17:55:00,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:55:00,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 357 transitions. [2022-11-25 17:55:00,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:00,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:00,869 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:00,869 INFO L175 Difference]: Start difference. First operand has 64 places, 122 transitions, 1522 flow. Second operand 4 states and 357 transitions. [2022-11-25 17:55:00,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 91 transitions, 1317 flow [2022-11-25 17:55:00,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 91 transitions, 1273 flow, removed 20 selfloop flow, removed 2 redundant places. [2022-11-25 17:55:00,883 INFO L231 Difference]: Finished difference. Result has 56 places, 86 transitions, 1067 flow [2022-11-25 17:55:00,883 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=1018, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1067, PETRI_PLACES=56, PETRI_TRANSITIONS=86} [2022-11-25 17:55:00,884 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 37 predicate places. [2022-11-25 17:55:00,884 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 86 transitions, 1067 flow [2022-11-25 17:55:00,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:00,884 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:55:00,885 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2022-11-25 17:55:00,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 17:55:01,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:55:01,091 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread_function_dataraceErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 17:55:01,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:55:01,091 INFO L85 PathProgramCache]: Analyzing trace with hash 72771623, now seen corresponding path program 1 times [2022-11-25 17:55:01,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:55:01,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859727546] [2022-11-25 17:55:01,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:55:01,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:55:01,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:55:01,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:55:01,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:55:01,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859727546] [2022-11-25 17:55:01,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859727546] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:55:01,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:55:01,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:55:01,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573146370] [2022-11-25 17:55:01,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:55:01,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:55:01,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:55:01,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:55:01,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:55:01,159 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 185 [2022-11-25 17:55:01,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 86 transitions, 1067 flow. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:01,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:55:01,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 185 [2022-11-25 17:55:01,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:55:01,229 INFO L130 PetriNetUnfolder]: 146/292 cut-off events. [2022-11-25 17:55:01,229 INFO L131 PetriNetUnfolder]: For 1650/1650 co-relation queries the response was YES. [2022-11-25 17:55:01,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1838 conditions, 292 events. 146/292 cut-off events. For 1650/1650 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1239 event pairs, 20 based on Foata normal form. 0/267 useless extension candidates. Maximal degree in co-relation 1808. Up to 161 conditions per place. [2022-11-25 17:55:01,232 INFO L137 encePairwiseOnDemand]: 180/185 looper letters, 60 selfloop transitions, 30 changer transitions 0/90 dead transitions. [2022-11-25 17:55:01,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 90 transitions, 1258 flow [2022-11-25 17:55:01,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:55:01,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:55:01,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2022-11-25 17:55:01,234 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2022-11-25 17:55:01,234 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2022-11-25 17:55:01,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2022-11-25 17:55:01,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:55:01,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2022-11-25 17:55:01,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:01,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:01,237 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:01,237 INFO L175 Difference]: Start difference. First operand has 56 places, 86 transitions, 1067 flow. Second operand 3 states and 280 transitions. [2022-11-25 17:55:01,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 90 transitions, 1258 flow [2022-11-25 17:55:01,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 90 transitions, 1255 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 17:55:01,248 INFO L231 Difference]: Finished difference. Result has 56 places, 76 transitions, 986 flow [2022-11-25 17:55:01,248 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=926, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=986, PETRI_PLACES=56, PETRI_TRANSITIONS=76} [2022-11-25 17:55:01,248 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 37 predicate places. [2022-11-25 17:55:01,249 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 76 transitions, 986 flow [2022-11-25 17:55:01,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:01,249 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:55:01,249 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2022-11-25 17:55:01,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 17:55:01,249 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread_function_dataraceErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 17:55:01,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:55:01,250 INFO L85 PathProgramCache]: Analyzing trace with hash 72771609, now seen corresponding path program 1 times [2022-11-25 17:55:01,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:55:01,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45188635] [2022-11-25 17:55:01,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:55:01,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:55:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:55:01,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:55:01,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:55:01,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45188635] [2022-11-25 17:55:01,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45188635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:55:01,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:55:01,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:55:01,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209312259] [2022-11-25 17:55:01,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:55:01,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:55:01,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:55:01,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:55:01,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:55:01,307 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 185 [2022-11-25 17:55:01,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 76 transitions, 986 flow. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:01,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:55:01,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 185 [2022-11-25 17:55:01,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:55:01,369 INFO L130 PetriNetUnfolder]: 124/257 cut-off events. [2022-11-25 17:55:01,369 INFO L131 PetriNetUnfolder]: For 2028/2028 co-relation queries the response was YES. [2022-11-25 17:55:01,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1675 conditions, 257 events. 124/257 cut-off events. For 2028/2028 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1071 event pairs, 16 based on Foata normal form. 25/282 useless extension candidates. Maximal degree in co-relation 1645. Up to 244 conditions per place. [2022-11-25 17:55:01,373 INFO L137 encePairwiseOnDemand]: 183/185 looper letters, 73 selfloop transitions, 1 changer transitions 0/74 dead transitions. [2022-11-25 17:55:01,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 74 transitions, 1077 flow [2022-11-25 17:55:01,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:55:01,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:55:01,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2022-11-25 17:55:01,374 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2022-11-25 17:55:01,375 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2022-11-25 17:55:01,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2022-11-25 17:55:01,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:55:01,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2022-11-25 17:55:01,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:01,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:01,377 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:01,377 INFO L175 Difference]: Start difference. First operand has 56 places, 76 transitions, 986 flow. Second operand 3 states and 280 transitions. [2022-11-25 17:55:01,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 74 transitions, 1077 flow [2022-11-25 17:55:01,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 74 transitions, 1047 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:55:01,389 INFO L231 Difference]: Finished difference. Result has 56 places, 66 transitions, 820 flow [2022-11-25 17:55:01,389 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=820, PETRI_PLACES=56, PETRI_TRANSITIONS=66} [2022-11-25 17:55:01,389 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 37 predicate places. [2022-11-25 17:55:01,390 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 66 transitions, 820 flow [2022-11-25 17:55:01,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:01,390 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:55:01,390 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2022-11-25 17:55:01,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 17:55:01,390 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 17:55:01,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:55:01,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1627353519, now seen corresponding path program 2 times [2022-11-25 17:55:01,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:55:01,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130288448] [2022-11-25 17:55:01,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:55:01,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:55:01,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:55:01,482 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:55:01,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:55:01,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130288448] [2022-11-25 17:55:01,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130288448] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:55:01,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391717876] [2022-11-25 17:55:01,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:55:01,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:55:01,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:55:01,486 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:55:01,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 17:55:01,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:55:01,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:55:01,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:55:01,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:55:01,604 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:55:01,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:55:01,674 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:55:01,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391717876] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:55:01,674 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:55:01,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-25 17:55:01,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762537506] [2022-11-25 17:55:01,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:55:01,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 17:55:01,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:55:01,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 17:55:01,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:55:01,705 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 185 [2022-11-25 17:55:01,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 66 transitions, 820 flow. Second operand has 13 states, 13 states have (on average 90.53846153846153) internal successors, (1177), 13 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:01,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:55:01,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 185 [2022-11-25 17:55:01,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:55:01,857 INFO L130 PetriNetUnfolder]: 196/401 cut-off events. [2022-11-25 17:55:01,858 INFO L131 PetriNetUnfolder]: For 2899/2899 co-relation queries the response was YES. [2022-11-25 17:55:01,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2660 conditions, 401 events. 196/401 cut-off events. For 2899/2899 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1660 event pairs, 25 based on Foata normal form. 42/443 useless extension candidates. Maximal degree in co-relation 2629. Up to 229 conditions per place. [2022-11-25 17:55:01,862 INFO L137 encePairwiseOnDemand]: 179/185 looper letters, 60 selfloop transitions, 69 changer transitions 0/129 dead transitions. [2022-11-25 17:55:01,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 129 transitions, 1830 flow [2022-11-25 17:55:01,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 17:55:01,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 17:55:01,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1142 transitions. [2022-11-25 17:55:01,866 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5144144144144144 [2022-11-25 17:55:01,866 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1142 transitions. [2022-11-25 17:55:01,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1142 transitions. [2022-11-25 17:55:01,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:55:01,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1142 transitions. [2022-11-25 17:55:01,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 95.16666666666667) internal successors, (1142), 12 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:01,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 185.0) internal successors, (2405), 13 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:01,873 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 185.0) internal successors, (2405), 13 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:01,873 INFO L175 Difference]: Start difference. First operand has 56 places, 66 transitions, 820 flow. Second operand 12 states and 1142 transitions. [2022-11-25 17:55:01,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 129 transitions, 1830 flow [2022-11-25 17:55:01,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 129 transitions, 1819 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:55:01,887 INFO L231 Difference]: Finished difference. Result has 73 places, 103 transitions, 1672 flow [2022-11-25 17:55:01,887 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=819, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1672, PETRI_PLACES=73, PETRI_TRANSITIONS=103} [2022-11-25 17:55:01,888 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 54 predicate places. [2022-11-25 17:55:01,888 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 103 transitions, 1672 flow [2022-11-25 17:55:01,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 90.53846153846153) internal successors, (1177), 13 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:01,889 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:55:01,889 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:55:01,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 17:55:02,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-25 17:55:02,094 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread_function_dataraceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 17:55:02,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:55:02,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1005412153, now seen corresponding path program 1 times [2022-11-25 17:55:02,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:55:02,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326131316] [2022-11-25 17:55:02,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:55:02,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:55:02,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:55:02,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:55:02,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:55:02,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326131316] [2022-11-25 17:55:02,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326131316] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:55:02,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925100073] [2022-11-25 17:55:02,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:55:02,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:55:02,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:55:02,216 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:55:02,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 17:55:02,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:55:02,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 17:55:02,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:55:02,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:55:02,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:55:02,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:55:02,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925100073] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:55:02,428 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:55:02,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-25 17:55:02,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151519022] [2022-11-25 17:55:02,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:55:02,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 17:55:02,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:55:02,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 17:55:02,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:55:02,465 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 185 [2022-11-25 17:55:02,467 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 103 transitions, 1672 flow. Second operand has 13 states, 13 states have (on average 85.76923076923077) internal successors, (1115), 13 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:02,467 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:55:02,467 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 185 [2022-11-25 17:55:02,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:55:02,926 INFO L130 PetriNetUnfolder]: 310/632 cut-off events. [2022-11-25 17:55:02,926 INFO L131 PetriNetUnfolder]: For 6590/6590 co-relation queries the response was YES. [2022-11-25 17:55:02,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4796 conditions, 632 events. 310/632 cut-off events. For 6590/6590 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3049 event pairs, 12 based on Foata normal form. 50/682 useless extension candidates. Maximal degree in co-relation 4757. Up to 288 conditions per place. [2022-11-25 17:55:02,935 INFO L137 encePairwiseOnDemand]: 179/185 looper letters, 84 selfloop transitions, 145 changer transitions 0/229 dead transitions. [2022-11-25 17:55:02,935 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 229 transitions, 3761 flow [2022-11-25 17:55:02,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-25 17:55:02,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-25 17:55:02,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2313 transitions. [2022-11-25 17:55:02,942 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48087318087318087 [2022-11-25 17:55:02,942 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2313 transitions. [2022-11-25 17:55:02,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2313 transitions. [2022-11-25 17:55:02,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:55:02,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2313 transitions. [2022-11-25 17:55:02,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 88.96153846153847) internal successors, (2313), 26 states have internal predecessors, (2313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:02,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 185.0) internal successors, (4995), 27 states have internal predecessors, (4995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:02,957 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 185.0) internal successors, (4995), 27 states have internal predecessors, (4995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:02,957 INFO L175 Difference]: Start difference. First operand has 73 places, 103 transitions, 1672 flow. Second operand 26 states and 2313 transitions. [2022-11-25 17:55:02,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 229 transitions, 3761 flow [2022-11-25 17:55:02,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 229 transitions, 3554 flow, removed 93 selfloop flow, removed 3 redundant places. [2022-11-25 17:55:02,995 INFO L231 Difference]: Finished difference. Result has 104 places, 172 transitions, 3222 flow [2022-11-25 17:55:02,995 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=1573, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3222, PETRI_PLACES=104, PETRI_TRANSITIONS=172} [2022-11-25 17:55:02,996 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 85 predicate places. [2022-11-25 17:55:02,996 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 172 transitions, 3222 flow [2022-11-25 17:55:02,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 85.76923076923077) internal successors, (1115), 13 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:02,997 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:55:02,997 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1] [2022-11-25 17:55:03,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 17:55:03,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:55:03,202 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread_function_dataraceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 17:55:03,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:55:03,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1018707604, now seen corresponding path program 2 times [2022-11-25 17:55:03,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:55:03,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38023862] [2022-11-25 17:55:03,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:55:03,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:55:03,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:55:03,329 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:55:03,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:55:03,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38023862] [2022-11-25 17:55:03,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38023862] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:55:03,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555516145] [2022-11-25 17:55:03,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:55:03,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:55:03,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:55:03,331 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:55:03,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 17:55:03,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:55:03,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:55:03,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 17:55:03,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:55:03,448 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:55:03,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:55:03,543 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:55:03,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555516145] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:55:03,544 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:55:03,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-11-25 17:55:03,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049370520] [2022-11-25 17:55:03,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:55:03,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-25 17:55:03,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:55:03,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-25 17:55:03,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-25 17:55:03,608 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 185 [2022-11-25 17:55:03,610 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 172 transitions, 3222 flow. Second operand has 18 states, 18 states have (on average 85.38888888888889) internal successors, (1537), 18 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:03,610 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:55:03,610 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 185 [2022-11-25 17:55:03,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:55:04,586 INFO L130 PetriNetUnfolder]: 573/1166 cut-off events. [2022-11-25 17:55:04,586 INFO L131 PetriNetUnfolder]: For 22810/22810 co-relation queries the response was YES. [2022-11-25 17:55:04,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9792 conditions, 1166 events. 573/1166 cut-off events. For 22810/22810 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 6679 event pairs, 12 based on Foata normal form. 98/1264 useless extension candidates. Maximal degree in co-relation 9743. Up to 527 conditions per place. [2022-11-25 17:55:04,605 INFO L137 encePairwiseOnDemand]: 179/185 looper letters, 153 selfloop transitions, 305 changer transitions 0/458 dead transitions. [2022-11-25 17:55:04,605 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 458 transitions, 8414 flow [2022-11-25 17:55:04,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-25 17:55:04,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-11-25 17:55:04,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 4209 transitions. [2022-11-25 17:55:04,614 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4840713053479011 [2022-11-25 17:55:04,614 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 4209 transitions. [2022-11-25 17:55:04,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 4209 transitions. [2022-11-25 17:55:04,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:55:04,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 4209 transitions. [2022-11-25 17:55:04,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 89.55319148936171) internal successors, (4209), 47 states have internal predecessors, (4209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:04,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 185.0) internal successors, (8880), 48 states have internal predecessors, (8880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:04,676 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 185.0) internal successors, (8880), 48 states have internal predecessors, (8880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:04,676 INFO L175 Difference]: Start difference. First operand has 104 places, 172 transitions, 3222 flow. Second operand 47 states and 4209 transitions. [2022-11-25 17:55:04,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 458 transitions, 8414 flow [2022-11-25 17:55:04,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 458 transitions, 7961 flow, removed 217 selfloop flow, removed 5 redundant places. [2022-11-25 17:55:04,766 INFO L231 Difference]: Finished difference. Result has 163 places, 341 transitions, 7159 flow [2022-11-25 17:55:04,766 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=3047, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=7159, PETRI_PLACES=163, PETRI_TRANSITIONS=341} [2022-11-25 17:55:04,767 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 144 predicate places. [2022-11-25 17:55:04,767 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 341 transitions, 7159 flow [2022-11-25 17:55:04,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 85.38888888888889) internal successors, (1537), 18 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:04,768 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:55:04,768 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:55:04,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 17:55:04,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:55:04,974 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread_function_dataraceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 17:55:04,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:55:04,975 INFO L85 PathProgramCache]: Analyzing trace with hash -210962815, now seen corresponding path program 2 times [2022-11-25 17:55:04,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:55:04,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440294250] [2022-11-25 17:55:04,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:55:04,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:55:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:55:05,148 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:55:05,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:55:05,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440294250] [2022-11-25 17:55:05,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440294250] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:55:05,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796196296] [2022-11-25 17:55:05,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:55:05,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:55:05,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:55:05,150 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:55:05,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 17:55:05,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:55:05,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:55:05,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 17:55:05,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:55:05,272 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:55:05,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:55:05,453 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:55:05,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796196296] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:55:05,454 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:55:05,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-11-25 17:55:05,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962230260] [2022-11-25 17:55:05,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:55:05,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-25 17:55:05,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:55:05,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-25 17:55:05,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=291, Unknown=0, NotChecked=0, Total=506 [2022-11-25 17:55:05,520 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 185 [2022-11-25 17:55:05,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 341 transitions, 7159 flow. Second operand has 23 states, 23 states have (on average 85.43478260869566) internal successors, (1965), 23 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:05,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:55:05,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 185 [2022-11-25 17:55:05,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:55:07,011 INFO L130 PetriNetUnfolder]: 1175/2380 cut-off events. [2022-11-25 17:55:07,011 INFO L131 PetriNetUnfolder]: For 100619/100619 co-relation queries the response was YES. [2022-11-25 17:55:07,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22186 conditions, 2380 events. 1175/2380 cut-off events. For 100619/100619 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 14818 event pairs, 38 based on Foata normal form. 297/2677 useless extension candidates. Maximal degree in co-relation 22118. Up to 1067 conditions per place. [2022-11-25 17:55:07,056 INFO L137 encePairwiseOnDemand]: 179/185 looper letters, 227 selfloop transitions, 560 changer transitions 0/787 dead transitions. [2022-11-25 17:55:07,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 787 transitions, 17395 flow [2022-11-25 17:55:07,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-25 17:55:07,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-11-25 17:55:07,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 4446 transitions. [2022-11-25 17:55:07,064 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48064864864864865 [2022-11-25 17:55:07,064 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 4446 transitions. [2022-11-25 17:55:07,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 4446 transitions. [2022-11-25 17:55:07,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:55:07,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 4446 transitions. [2022-11-25 17:55:07,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 88.92) internal successors, (4446), 50 states have internal predecessors, (4446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:07,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 185.0) internal successors, (9435), 51 states have internal predecessors, (9435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:07,099 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 185.0) internal successors, (9435), 51 states have internal predecessors, (9435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:07,099 INFO L175 Difference]: Start difference. First operand has 163 places, 341 transitions, 7159 flow. Second operand 50 states and 4446 transitions. [2022-11-25 17:55:07,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 787 transitions, 17395 flow [2022-11-25 17:55:07,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 787 transitions, 15866 flow, removed 615 selfloop flow, removed 13 redundant places. [2022-11-25 17:55:07,423 INFO L231 Difference]: Finished difference. Result has 227 places, 674 transitions, 15555 flow [2022-11-25 17:55:07,423 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=6404, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=15555, PETRI_PLACES=227, PETRI_TRANSITIONS=674} [2022-11-25 17:55:07,424 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 208 predicate places. [2022-11-25 17:55:07,424 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 674 transitions, 15555 flow [2022-11-25 17:55:07,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 85.43478260869566) internal successors, (1965), 23 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:07,425 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:55:07,425 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 2, 2, 1, 1, 1, 1, 1] [2022-11-25 17:55:07,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 17:55:07,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-25 17:55:07,633 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread_function_dataraceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 17:55:07,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:55:07,634 INFO L85 PathProgramCache]: Analyzing trace with hash -2081530738, now seen corresponding path program 3 times [2022-11-25 17:55:07,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:55:07,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840995593] [2022-11-25 17:55:07,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:55:07,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:55:07,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:55:07,813 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:55:07,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:55:07,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840995593] [2022-11-25 17:55:07,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840995593] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:55:07,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109407541] [2022-11-25 17:55:07,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 17:55:07,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:55:07,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:55:07,815 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:55:07,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 17:55:07,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-25 17:55:07,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:55:07,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 17:55:07,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:55:07,945 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:55:07,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:55:08,121 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:55:08,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109407541] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:55:08,121 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:55:08,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-11-25 17:55:08,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051720025] [2022-11-25 17:55:08,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:55:08,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-25 17:55:08,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:55:08,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-25 17:55:08,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=321, Unknown=0, NotChecked=0, Total=506 [2022-11-25 17:55:08,189 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 185 [2022-11-25 17:55:08,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 674 transitions, 15555 flow. Second operand has 23 states, 23 states have (on average 85.43478260869566) internal successors, (1965), 23 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:08,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:55:08,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 185 [2022-11-25 17:55:08,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:55:11,336 INFO L130 PetriNetUnfolder]: 2068/4183 cut-off events. [2022-11-25 17:55:11,336 INFO L131 PetriNetUnfolder]: For 260693/260693 co-relation queries the response was YES. [2022-11-25 17:55:11,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41319 conditions, 4183 events. 2068/4183 cut-off events. For 260693/260693 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 29764 event pairs, 38 based on Foata normal form. 265/4448 useless extension candidates. Maximal degree in co-relation 41223. Up to 1909 conditions per place. [2022-11-25 17:55:11,411 INFO L137 encePairwiseOnDemand]: 179/185 looper letters, 301 selfloop transitions, 1151 changer transitions 0/1452 dead transitions. [2022-11-25 17:55:11,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 1452 transitions, 34489 flow [2022-11-25 17:55:11,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-11-25 17:55:11,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2022-11-25 17:55:11,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 5790 transitions. [2022-11-25 17:55:11,422 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4814968814968815 [2022-11-25 17:55:11,422 INFO L72 ComplementDD]: Start complementDD. Operand 65 states and 5790 transitions. [2022-11-25 17:55:11,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 5790 transitions. [2022-11-25 17:55:11,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:55:11,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 65 states and 5790 transitions. [2022-11-25 17:55:11,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 66 states, 65 states have (on average 89.07692307692308) internal successors, (5790), 65 states have internal predecessors, (5790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:11,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 66 states, 66 states have (on average 185.0) internal successors, (12210), 66 states have internal predecessors, (12210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:11,454 INFO L81 ComplementDD]: Finished complementDD. Result has 66 states, 66 states have (on average 185.0) internal successors, (12210), 66 states have internal predecessors, (12210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:11,454 INFO L175 Difference]: Start difference. First operand has 227 places, 674 transitions, 15555 flow. Second operand 65 states and 5790 transitions. [2022-11-25 17:55:11,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 1452 transitions, 34489 flow [2022-11-25 17:55:12,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 1452 transitions, 31306 flow, removed 1524 selfloop flow, removed 15 redundant places. [2022-11-25 17:55:12,301 INFO L231 Difference]: Finished difference. Result has 298 places, 1305 transitions, 31165 flow [2022-11-25 17:55:12,302 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=13844, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=616, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=31165, PETRI_PLACES=298, PETRI_TRANSITIONS=1305} [2022-11-25 17:55:12,302 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 279 predicate places. [2022-11-25 17:55:12,302 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 1305 transitions, 31165 flow [2022-11-25 17:55:12,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 85.43478260869566) internal successors, (1965), 23 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:12,303 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:55:12,303 INFO L209 CegarLoopForPetriNet]: trace histogram [6, 2, 2, 1, 1, 1, 1, 1] [2022-11-25 17:55:12,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-25 17:55:12,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:55:12,504 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread_function_dataraceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 17:55:12,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:55:12,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1513351290, now seen corresponding path program 4 times [2022-11-25 17:55:12,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:55:12,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630590207] [2022-11-25 17:55:12,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:55:12,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:55:12,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:55:12,723 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:55:12,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:55:12,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630590207] [2022-11-25 17:55:12,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630590207] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:55:12,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783158182] [2022-11-25 17:55:12,724 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 17:55:12,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:55:12,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:55:12,727 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:55:12,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 17:55:12,828 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 17:55:12,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:55:12,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 17:55:12,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:55:12,871 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:55:12,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:55:13,127 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:55:13,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783158182] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:55:13,128 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:55:13,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-11-25 17:55:13,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156152427] [2022-11-25 17:55:13,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:55:13,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-25 17:55:13,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:55:13,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-25 17:55:13,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=376, Unknown=0, NotChecked=0, Total=600 [2022-11-25 17:55:13,200 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 185 [2022-11-25 17:55:13,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 1305 transitions, 31165 flow. Second operand has 25 states, 25 states have (on average 85.4) internal successors, (2135), 25 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:13,202 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:55:13,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 185 [2022-11-25 17:55:13,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:55:19,761 INFO L130 PetriNetUnfolder]: 3351/6787 cut-off events. [2022-11-25 17:55:19,761 INFO L131 PetriNetUnfolder]: For 806295/806295 co-relation queries the response was YES. [2022-11-25 17:55:19,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70747 conditions, 6787 events. 3351/6787 cut-off events. For 806295/806295 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 52674 event pairs, 87 based on Foata normal form. 467/7254 useless extension candidates. Maximal degree in co-relation 70628. Up to 3133 conditions per place. [2022-11-25 17:55:19,916 INFO L137 encePairwiseOnDemand]: 179/185 looper letters, 442 selfloop transitions, 1910 changer transitions 0/2352 dead transitions. [2022-11-25 17:55:19,916 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 2352 transitions, 58934 flow [2022-11-25 17:55:19,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-11-25 17:55:19,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2022-11-25 17:55:19,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 7050 transitions. [2022-11-25 17:55:19,931 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4823811152925077 [2022-11-25 17:55:19,931 INFO L72 ComplementDD]: Start complementDD. Operand 79 states and 7050 transitions. [2022-11-25 17:55:19,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 7050 transitions. [2022-11-25 17:55:19,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:55:19,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 79 states and 7050 transitions. [2022-11-25 17:55:19,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 80 states, 79 states have (on average 89.24050632911393) internal successors, (7050), 79 states have internal predecessors, (7050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:19,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 80 states, 80 states have (on average 185.0) internal successors, (14800), 80 states have internal predecessors, (14800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:19,978 INFO L81 ComplementDD]: Finished complementDD. Result has 80 states, 80 states have (on average 185.0) internal successors, (14800), 80 states have internal predecessors, (14800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:19,978 INFO L175 Difference]: Start difference. First operand has 298 places, 1305 transitions, 31165 flow. Second operand 79 states and 7050 transitions. [2022-11-25 17:55:19,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 2352 transitions, 58934 flow [2022-11-25 17:55:22,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 2352 transitions, 55209 flow, removed 1513 selfloop flow, removed 16 redundant places. [2022-11-25 17:55:22,548 INFO L231 Difference]: Finished difference. Result has 388 places, 2163 transitions, 55610 flow [2022-11-25 17:55:22,549 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=28954, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=55610, PETRI_PLACES=388, PETRI_TRANSITIONS=2163} [2022-11-25 17:55:22,549 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 369 predicate places. [2022-11-25 17:55:22,549 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 2163 transitions, 55610 flow [2022-11-25 17:55:22,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 85.4) internal successors, (2135), 25 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:22,550 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:55:22,550 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-11-25 17:55:22,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 17:55:22,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-25 17:55:22,751 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread_function_dataraceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 17:55:22,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:55:22,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1096292723, now seen corresponding path program 5 times [2022-11-25 17:55:22,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:55:22,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162276212] [2022-11-25 17:55:22,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:55:22,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:55:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:55:23,026 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:55:23,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:55:23,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162276212] [2022-11-25 17:55:23,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162276212] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:55:23,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764061442] [2022-11-25 17:55:23,027 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-25 17:55:23,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:55:23,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:55:23,029 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:55:23,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 17:55:23,129 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-11-25 17:55:23,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:55:23,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 17:55:23,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:55:23,186 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:55:23,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:55:23,370 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:55:23,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764061442] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:55:23,370 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:55:23,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-11-25 17:55:23,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733303100] [2022-11-25 17:55:23,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:55:23,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-25 17:55:23,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:55:23,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-25 17:55:23,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=444, Unknown=0, NotChecked=0, Total=650 [2022-11-25 17:55:23,478 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 185 [2022-11-25 17:55:23,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 2163 transitions, 55610 flow. Second operand has 26 states, 26 states have (on average 85.38461538461539) internal successors, (2220), 26 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:23,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:55:23,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 185 [2022-11-25 17:55:23,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:55:37,152 INFO L130 PetriNetUnfolder]: 5451/11033 cut-off events. [2022-11-25 17:55:37,152 INFO L131 PetriNetUnfolder]: For 1485476/1485476 co-relation queries the response was YES. [2022-11-25 17:55:37,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126844 conditions, 11033 events. 5451/11033 cut-off events. For 1485476/1485476 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 94150 event pairs, 84 based on Foata normal form. 274/11307 useless extension candidates. Maximal degree in co-relation 126697. Up to 5103 conditions per place. [2022-11-25 17:55:37,458 INFO L137 encePairwiseOnDemand]: 179/185 looper letters, 696 selfloop transitions, 3150 changer transitions 0/3846 dead transitions. [2022-11-25 17:55:37,458 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 3846 transitions, 105198 flow [2022-11-25 17:55:37,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-11-25 17:55:37,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2022-11-25 17:55:37,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 7765 transitions. [2022-11-25 17:55:37,469 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4824479652065859 [2022-11-25 17:55:37,470 INFO L72 ComplementDD]: Start complementDD. Operand 87 states and 7765 transitions. [2022-11-25 17:55:37,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 7765 transitions. [2022-11-25 17:55:37,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:55:37,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 87 states and 7765 transitions. [2022-11-25 17:55:37,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 88 states, 87 states have (on average 89.25287356321839) internal successors, (7765), 87 states have internal predecessors, (7765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:37,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 88 states, 88 states have (on average 185.0) internal successors, (16280), 88 states have internal predecessors, (16280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:37,505 INFO L81 ComplementDD]: Finished complementDD. Result has 88 states, 88 states have (on average 185.0) internal successors, (16280), 88 states have internal predecessors, (16280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:37,505 INFO L175 Difference]: Start difference. First operand has 388 places, 2163 transitions, 55610 flow. Second operand 87 states and 7765 transitions. [2022-11-25 17:55:37,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 3846 transitions, 105198 flow [2022-11-25 17:55:47,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 3846 transitions, 98315 flow, removed 3356 selfloop flow, removed 24 redundant places. [2022-11-25 17:55:47,284 INFO L231 Difference]: Finished difference. Result has 481 places, 3523 transitions, 96951 flow [2022-11-25 17:55:47,286 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=52145, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1907, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=87, PETRI_FLOW=96951, PETRI_PLACES=481, PETRI_TRANSITIONS=3523} [2022-11-25 17:55:47,287 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 462 predicate places. [2022-11-25 17:55:47,287 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 3523 transitions, 96951 flow [2022-11-25 17:55:47,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 85.38461538461539) internal successors, (2220), 26 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:47,287 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:55:47,288 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1] [2022-11-25 17:55:47,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-25 17:55:47,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-25 17:55:47,493 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread_function_dataraceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 17:55:47,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:55:47,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1723857403, now seen corresponding path program 6 times [2022-11-25 17:55:47,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:55:47,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104818594] [2022-11-25 17:55:47,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:55:47,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:55:47,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:55:47,767 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:55:47,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:55:47,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104818594] [2022-11-25 17:55:47,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104818594] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:55:47,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027768554] [2022-11-25 17:55:47,767 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-25 17:55:47,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:55:47,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:55:47,769 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:55:47,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-25 17:55:47,861 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-11-25 17:55:47,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:55:47,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-25 17:55:47,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:55:47,905 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:55:47,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:55:48,145 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:55:48,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027768554] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:55:48,145 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:55:48,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2022-11-25 17:55:48,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877685286] [2022-11-25 17:55:48,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:55:48,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-25 17:55:48,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:55:48,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-25 17:55:48,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=576, Unknown=0, NotChecked=0, Total=812 [2022-11-25 17:55:48,235 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 185 [2022-11-25 17:55:48,237 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 3523 transitions, 96951 flow. Second operand has 29 states, 29 states have (on average 85.34482758620689) internal successors, (2475), 29 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:48,237 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:55:48,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 185 [2022-11-25 17:55:48,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:56:28,776 INFO L130 PetriNetUnfolder]: 9401/19022 cut-off events. [2022-11-25 17:56:28,776 INFO L131 PetriNetUnfolder]: For 4719272/4719272 co-relation queries the response was YES. [2022-11-25 17:56:29,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239090 conditions, 19022 events. 9401/19022 cut-off events. For 4719272/4719272 co-relation queries the response was YES. Maximal size of possible extension queue 1065. Compared 178926 event pairs, 59 based on Foata normal form. 611/19633 useless extension candidates. Maximal degree in co-relation 238912. Up to 8810 conditions per place. [2022-11-25 17:56:29,517 INFO L137 encePairwiseOnDemand]: 179/185 looper letters, 788 selfloop transitions, 5703 changer transitions 0/6491 dead transitions. [2022-11-25 17:56:29,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 602 places, 6491 transitions, 191352 flow [2022-11-25 17:56:29,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-11-25 17:56:29,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2022-11-25 17:56:29,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 10923 transitions. [2022-11-25 17:56:29,533 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4839610101905184 [2022-11-25 17:56:29,534 INFO L72 ComplementDD]: Start complementDD. Operand 122 states and 10923 transitions. [2022-11-25 17:56:29,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 122 states and 10923 transitions. [2022-11-25 17:56:29,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:56:29,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 122 states and 10923 transitions. [2022-11-25 17:56:29,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 123 states, 122 states have (on average 89.5327868852459) internal successors, (10923), 122 states have internal predecessors, (10923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:56:29,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 123 states, 123 states have (on average 185.0) internal successors, (22755), 123 states have internal predecessors, (22755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:56:29,589 INFO L81 ComplementDD]: Finished complementDD. Result has 123 states, 123 states have (on average 185.0) internal successors, (22755), 123 states have internal predecessors, (22755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:56:29,589 INFO L175 Difference]: Start difference. First operand has 481 places, 3523 transitions, 96951 flow. Second operand 122 states and 10923 transitions. [2022-11-25 17:56:29,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 602 places, 6491 transitions, 191352 flow [2022-11-25 17:57:01,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 6491 transitions, 185189 flow, removed 3022 selfloop flow, removed 25 redundant places. [2022-11-25 17:57:01,988 INFO L231 Difference]: Finished difference. Result has 621 places, 6096 transitions, 185722 flow [2022-11-25 17:57:01,991 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=94628, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3280, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=122, PETRI_FLOW=185722, PETRI_PLACES=621, PETRI_TRANSITIONS=6096} [2022-11-25 17:57:01,992 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 602 predicate places. [2022-11-25 17:57:01,992 INFO L495 AbstractCegarLoop]: Abstraction has has 621 places, 6096 transitions, 185722 flow [2022-11-25 17:57:01,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 85.34482758620689) internal successors, (2475), 29 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:57:01,993 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:57:01,993 INFO L209 CegarLoopForPetriNet]: trace histogram [12, 2, 2, 1, 1, 1, 1, 1] [2022-11-25 17:57:02,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-25 17:57:02,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-25 17:57:02,199 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread_function_dataraceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 17:57:02,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:57:02,200 INFO L85 PathProgramCache]: Analyzing trace with hash -937163828, now seen corresponding path program 7 times [2022-11-25 17:57:02,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:57:02,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059415215] [2022-11-25 17:57:02,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:57:02,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:57:02,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:57:02,595 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:57:02,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:57:02,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059415215] [2022-11-25 17:57:02,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059415215] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:57:02,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116402254] [2022-11-25 17:57:02,596 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-25 17:57:02,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:57:02,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:57:02,598 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:57:02,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-25 17:57:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:57:02,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-25 17:57:02,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:57:02,758 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:57:02,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:57:03,174 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:57:03,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116402254] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:57:03,175 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:57:03,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 35 [2022-11-25 17:57:03,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519957791] [2022-11-25 17:57:03,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:57:03,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-25 17:57:03,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:57:03,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-25 17:57:03,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=542, Invalid=790, Unknown=0, NotChecked=0, Total=1332 [2022-11-25 17:57:03,308 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 185 [2022-11-25 17:57:03,311 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 621 places, 6096 transitions, 185722 flow. Second operand has 37 states, 37 states have (on average 85.27027027027027) internal successors, (3155), 37 states have internal predecessors, (3155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:57:03,311 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:57:03,311 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 185 [2022-11-25 17:57:03,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:58:51,884 INFO L130 PetriNetUnfolder]: 15247/30769 cut-off events. [2022-11-25 17:58:51,884 INFO L131 PetriNetUnfolder]: For 20531995/20531995 co-relation queries the response was YES. [2022-11-25 17:58:53,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411399 conditions, 30769 events. 15247/30769 cut-off events. For 20531995/20531995 co-relation queries the response was YES. Maximal size of possible extension queue 1530. Compared 296338 event pairs, 721 based on Foata normal form. 2130/32899 useless extension candidates. Maximal degree in co-relation 411176. Up to 14528 conditions per place. [2022-11-25 17:58:53,186 INFO L137 encePairwiseOnDemand]: 179/185 looper letters, 2057 selfloop transitions, 8105 changer transitions 0/10162 dead transitions. [2022-11-25 17:58:53,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 736 places, 10162 transitions, 323602 flow [2022-11-25 17:58:53,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-11-25 17:58:53,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2022-11-25 17:58:53,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 10363 transitions. [2022-11-25 17:58:53,201 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48289841565703634 [2022-11-25 17:58:53,201 INFO L72 ComplementDD]: Start complementDD. Operand 116 states and 10363 transitions. [2022-11-25 17:58:53,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 116 states and 10363 transitions. [2022-11-25 17:58:53,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:58:53,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 116 states and 10363 transitions. [2022-11-25 17:58:53,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 117 states, 116 states have (on average 89.33620689655173) internal successors, (10363), 116 states have internal predecessors, (10363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:58:53,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 117 states, 117 states have (on average 185.0) internal successors, (21645), 117 states have internal predecessors, (21645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:58:53,246 INFO L81 ComplementDD]: Finished complementDD. Result has 117 states, 117 states have (on average 185.0) internal successors, (21645), 117 states have internal predecessors, (21645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:58:53,246 INFO L175 Difference]: Start difference. First operand has 621 places, 6096 transitions, 185722 flow. Second operand 116 states and 10363 transitions. [2022-11-25 17:58:53,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 736 places, 10162 transitions, 323602 flow [2022-11-25 18:00:30,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 708 places, 10162 transitions, 311712 flow, removed 5861 selfloop flow, removed 28 redundant places. [2022-11-25 18:00:30,640 INFO L231 Difference]: Finished difference. Result has 770 places, 9909 transitions, 320394 flow [2022-11-25 18:00:30,644 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=179026, PETRI_DIFFERENCE_MINUEND_PLACES=593, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6096, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4763, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1022, PETRI_DIFFERENCE_SUBTRAHEND_STATES=116, PETRI_FLOW=320394, PETRI_PLACES=770, PETRI_TRANSITIONS=9909} [2022-11-25 18:00:30,645 INFO L288 CegarLoopForPetriNet]: 19 programPoint places, 751 predicate places. [2022-11-25 18:00:30,645 INFO L495 AbstractCegarLoop]: Abstraction has has 770 places, 9909 transitions, 320394 flow [2022-11-25 18:00:30,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 85.27027027027027) internal successors, (3155), 37 states have internal predecessors, (3155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:00:30,645 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:00:30,646 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 3, 3, 1, 1, 1, 1, 1] [2022-11-25 18:00:30,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-25 18:00:30,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:00:30,846 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread_function_dataraceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 18:00:30,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:00:30,847 INFO L85 PathProgramCache]: Analyzing trace with hash -851125165, now seen corresponding path program 8 times [2022-11-25 18:00:30,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:00:30,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462306574] [2022-11-25 18:00:30,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:00:30,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:00:30,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:31,237 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:00:31,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:00:31,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462306574] [2022-11-25 18:00:31,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462306574] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:00:31,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915602534] [2022-11-25 18:00:31,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:00:31,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:00:31,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:00:31,240 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:00:31,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef659804-93c6-4d7a-a78d-07eb4d99f203/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-25 18:00:31,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:00:31,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:00:31,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-25 18:00:31,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:00:31,429 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:00:31,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:00:31,841 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:00:31,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915602534] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:00:31,841 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:00:31,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 35 [2022-11-25 18:00:31,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081213447] [2022-11-25 18:00:31,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:00:31,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-25 18:00:31,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:00:31,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-25 18:00:31,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=492, Invalid=840, Unknown=0, NotChecked=0, Total=1332 [2022-11-25 18:00:31,922 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 185 [2022-11-25 18:00:31,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 770 places, 9909 transitions, 320394 flow. Second operand has 37 states, 37 states have (on average 85.27027027027027) internal successors, (3155), 37 states have internal predecessors, (3155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:00:31,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:00:31,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 185 [2022-11-25 18:00:31,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:05:23,440 INFO L130 PetriNetUnfolder]: 24283/48954 cut-off events. [2022-11-25 18:05:23,440 INFO L131 PetriNetUnfolder]: For 43732332/43732332 co-relation queries the response was YES. [2022-11-25 18:05:25,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 701636 conditions, 48954 events. 24283/48954 cut-off events. For 43732332/43732332 co-relation queries the response was YES. Maximal size of possible extension queue 2332. Compared 501729 event pairs, 486 based on Foata normal form. 2711/51665 useless extension candidates. Maximal degree in co-relation 701351. Up to 23272 conditions per place. [2022-11-25 18:05:26,266 INFO L137 encePairwiseOnDemand]: 179/185 looper letters, 1386 selfloop transitions, 15071 changer transitions 0/16457 dead transitions. [2022-11-25 18:05:26,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 912 places, 16457 transitions, 559087 flow [2022-11-25 18:05:26,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-11-25 18:05:26,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2022-11-25 18:05:26,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 12772 transitions. [2022-11-25 18:05:26,283 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4827820827820828 [2022-11-25 18:05:26,284 INFO L72 ComplementDD]: Start complementDD. Operand 143 states and 12772 transitions. [2022-11-25 18:05:26,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 143 states and 12772 transitions. [2022-11-25 18:05:26,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:05:26,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 143 states and 12772 transitions. [2022-11-25 18:05:26,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 144 states, 143 states have (on average 89.31468531468532) internal successors, (12772), 143 states have internal predecessors, (12772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:05:26,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 144 states, 144 states have (on average 185.0) internal successors, (26640), 144 states have internal predecessors, (26640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:05:26,332 INFO L81 ComplementDD]: Finished complementDD. Result has 144 states, 144 states have (on average 185.0) internal successors, (26640), 144 states have internal predecessors, (26640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:05:26,333 INFO L175 Difference]: Start difference. First operand has 770 places, 9909 transitions, 320394 flow. Second operand 143 states and 12772 transitions. [2022-11-25 18:05:26,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 912 places, 16457 transitions, 559087 flow