./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/bin/uautomizer-tPACEb0tL8 --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 db5eab03de8fef3e653289c5dcf0b220be6d8b09a4df3c07d6d5a066426e755a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:40:48,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:40:48,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:40:48,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:40:48,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:40:48,406 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:40:48,408 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:40:48,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:40:48,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:40:48,429 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:40:48,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:40:48,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:40:48,432 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:40:48,433 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:40:48,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:40:48,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:40:48,436 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:40:48,437 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:40:48,443 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:40:48,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:40:48,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:40:48,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:40:48,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:40:48,467 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:40:48,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:40:48,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:40:48,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:40:48,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:40:48,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:40:48,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:40:48,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:40:48,487 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:40:48,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:40:48,491 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:40:48,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:40:48,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:40:48,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:40:48,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:40:48,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:40:48,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:40:48,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:40:48,501 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:40:48,561 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:40:48,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:40:48,562 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:40:48,563 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:40:48,564 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:40:48,564 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:40:48,565 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:40:48,566 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:40:48,566 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:40:48,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:40:48,568 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:40:48,568 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:40:48,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:40:48,569 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:40:48,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:40:48,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:40:48,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:40:48,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:40:48,570 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:40:48,571 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:40:48,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:40:48,571 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:40:48,572 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:40:48,572 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:40:48,572 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:40:48,573 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:40:48,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:40:48,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:40:48,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:40:48,576 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:40:48,576 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:40:48,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:40:48,577 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:40:48,577 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:40:48,578 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:40:48,578 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db5eab03de8fef3e653289c5dcf0b220be6d8b09a4df3c07d6d5a066426e755a [2022-11-16 11:40:48,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:40:48,999 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:40:49,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:40:49,004 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:40:49,005 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:40:49,007 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i [2022-11-16 11:40:49,090 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/bin/uautomizer-tPACEb0tL8/data/ffcd8d2a6/8a473f2d61b041158863663fdf73539a/FLAGa3a4bfa0f [2022-11-16 11:40:49,976 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:40:49,977 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i [2022-11-16 11:40:49,996 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/bin/uautomizer-tPACEb0tL8/data/ffcd8d2a6/8a473f2d61b041158863663fdf73539a/FLAGa3a4bfa0f [2022-11-16 11:40:50,139 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/bin/uautomizer-tPACEb0tL8/data/ffcd8d2a6/8a473f2d61b041158863663fdf73539a [2022-11-16 11:40:50,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:40:50,145 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:40:50,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:40:50,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:40:50,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:40:50,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:40:50" (1/1) ... [2022-11-16 11:40:50,165 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d10aa68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:50, skipping insertion in model container [2022-11-16 11:40:50,166 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:40:50" (1/1) ... [2022-11-16 11:40:50,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:40:50,224 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:40:51,015 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i[47038,47051] [2022-11-16 11:40:51,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:40:51,230 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:40:51,295 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i[47038,47051] [2022-11-16 11:40:51,327 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:40:51,398 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:40:51,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:51 WrapperNode [2022-11-16 11:40:51,399 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:40:51,400 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:40:51,401 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:40:51,401 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:40:51,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:51" (1/1) ... [2022-11-16 11:40:51,434 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:51" (1/1) ... [2022-11-16 11:40:51,471 INFO L138 Inliner]: procedures = 278, calls = 60, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 241 [2022-11-16 11:40:51,472 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:40:51,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:40:51,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:40:51,474 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:40:51,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:51" (1/1) ... [2022-11-16 11:40:51,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:51" (1/1) ... [2022-11-16 11:40:51,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:51" (1/1) ... [2022-11-16 11:40:51,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:51" (1/1) ... [2022-11-16 11:40:51,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:51" (1/1) ... [2022-11-16 11:40:51,537 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:51" (1/1) ... [2022-11-16 11:40:51,547 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:51" (1/1) ... [2022-11-16 11:40:51,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:51" (1/1) ... [2022-11-16 11:40:51,560 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:40:51,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:40:51,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:40:51,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:40:51,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:51" (1/1) ... [2022-11-16 11:40:51,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:40:51,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:40:51,613 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:40:51,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:40:51,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:40:51,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 11:40:51,672 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-16 11:40:51,672 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-16 11:40:51,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:40:51,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:40:51,673 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-16 11:40:51,673 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-16 11:40:51,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:40:51,674 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 11:40:51,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:40:51,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:40:51,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 11:40:51,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:40:51,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:40:51,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:40:51,677 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:40:51,973 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:40:51,976 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:40:52,523 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:40:52,536 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:40:52,536 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-16 11:40:52,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:40:52 BoogieIcfgContainer [2022-11-16 11:40:52,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:40:52,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:40:52,542 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:40:52,547 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:40:52,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:40:50" (1/3) ... [2022-11-16 11:40:52,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e40059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:40:52, skipping insertion in model container [2022-11-16 11:40:52,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:51" (2/3) ... [2022-11-16 11:40:52,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e40059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:40:52, skipping insertion in model container [2022-11-16 11:40:52,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:40:52" (3/3) ... [2022-11-16 11:40:52,551 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_86-lists_racing.i [2022-11-16 11:40:52,562 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:40:52,579 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:40:52,580 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-16 11:40:52,581 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:40:52,799 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-16 11:40:52,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 268 transitions, 558 flow [2022-11-16 11:40:53,067 INFO L130 PetriNetUnfolder]: 54/500 cut-off events. [2022-11-16 11:40:53,067 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2022-11-16 11:40:53,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 500 events. 54/500 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2049 event pairs, 0 based on Foata normal form. 0/410 useless extension candidates. Maximal degree in co-relation 252. Up to 8 conditions per place. [2022-11-16 11:40:53,081 INFO L82 GeneralOperation]: Start removeDead. Operand has 248 places, 268 transitions, 558 flow [2022-11-16 11:40:53,091 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 248 places, 268 transitions, 558 flow [2022-11-16 11:40:53,103 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:40:53,111 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;@173b9c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:40:53,111 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-11-16 11:40:53,130 INFO L130 PetriNetUnfolder]: 5/84 cut-off events. [2022-11-16 11:40:53,130 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:40:53,130 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:53,131 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:53,132 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-16 11:40:53,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:53,138 INFO L85 PathProgramCache]: Analyzing trace with hash 823770833, now seen corresponding path program 1 times [2022-11-16 11:40:53,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:53,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473738979] [2022-11-16 11:40:53,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:53,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:53,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:53,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:53,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:53,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473738979] [2022-11-16 11:40:53,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473738979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:53,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:53,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:40:53,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195984343] [2022-11-16 11:40:53,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:53,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:40:53,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:53,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:40:53,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:40:53,503 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 268 [2022-11-16 11:40:53,509 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 268 transitions, 558 flow. Second operand has 2 states, 2 states have (on average 245.0) internal successors, (490), 2 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:53,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:40:53,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 268 [2022-11-16 11:40:53,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:40:53,736 INFO L130 PetriNetUnfolder]: 15/459 cut-off events. [2022-11-16 11:40:53,736 INFO L131 PetriNetUnfolder]: For 33/49 co-relation queries the response was YES. [2022-11-16 11:40:53,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 491 conditions, 459 events. 15/459 cut-off events. For 33/49 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1779 event pairs, 0 based on Foata normal form. 51/457 useless extension candidates. Maximal degree in co-relation 219. Up to 12 conditions per place. [2022-11-16 11:40:53,748 INFO L137 encePairwiseOnDemand]: 251/268 looper letters, 6 selfloop transitions, 0 changer transitions 0/250 dead transitions. [2022-11-16 11:40:53,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 250 transitions, 534 flow [2022-11-16 11:40:53,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:40:53,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 11:40:53,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 511 transitions. [2022-11-16 11:40:53,777 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9533582089552238 [2022-11-16 11:40:53,778 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 511 transitions. [2022-11-16 11:40:53,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 511 transitions. [2022-11-16 11:40:53,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:40:53,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 511 transitions. [2022-11-16 11:40:53,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 255.5) internal successors, (511), 2 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:53,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:53,848 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:53,851 INFO L175 Difference]: Start difference. First operand has 248 places, 268 transitions, 558 flow. Second operand 2 states and 511 transitions. [2022-11-16 11:40:53,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 250 transitions, 534 flow [2022-11-16 11:40:53,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 250 transitions, 534 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:40:53,871 INFO L231 Difference]: Finished difference. Result has 248 places, 250 transitions, 522 flow [2022-11-16 11:40:53,874 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=522, PETRI_PLACES=248, PETRI_TRANSITIONS=250} [2022-11-16 11:40:53,879 INFO L288 CegarLoopForPetriNet]: 248 programPoint places, 0 predicate places. [2022-11-16 11:40:53,879 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 250 transitions, 522 flow [2022-11-16 11:40:53,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 245.0) internal successors, (490), 2 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:53,881 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:53,881 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:53,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:40:53,882 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-16 11:40:53,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:53,883 INFO L85 PathProgramCache]: Analyzing trace with hash 952853552, now seen corresponding path program 1 times [2022-11-16 11:40:53,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:53,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595095283] [2022-11-16 11:40:53,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:53,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:53,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:54,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:54,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:54,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595095283] [2022-11-16 11:40:54,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595095283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:54,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:54,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:40:54,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551136848] [2022-11-16 11:40:54,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:54,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:40:54,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:54,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:40:54,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:40:54,171 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 268 [2022-11-16 11:40:54,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 250 transitions, 522 flow. Second operand has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:54,175 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:40:54,175 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 268 [2022-11-16 11:40:54,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:40:54,344 INFO L130 PetriNetUnfolder]: 15/478 cut-off events. [2022-11-16 11:40:54,344 INFO L131 PetriNetUnfolder]: For 33/49 co-relation queries the response was YES. [2022-11-16 11:40:54,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 524 conditions, 478 events. 15/478 cut-off events. For 33/49 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1775 event pairs, 0 based on Foata normal form. 0/423 useless extension candidates. Maximal degree in co-relation 519. Up to 20 conditions per place. [2022-11-16 11:40:54,351 INFO L137 encePairwiseOnDemand]: 265/268 looper letters, 17 selfloop transitions, 2 changer transitions 0/255 dead transitions. [2022-11-16 11:40:54,351 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 255 transitions, 570 flow [2022-11-16 11:40:54,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:40:54,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:40:54,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 728 transitions. [2022-11-16 11:40:54,356 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9054726368159204 [2022-11-16 11:40:54,356 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 728 transitions. [2022-11-16 11:40:54,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 728 transitions. [2022-11-16 11:40:54,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:40:54,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 728 transitions. [2022-11-16 11:40:54,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:54,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:54,366 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:54,367 INFO L175 Difference]: Start difference. First operand has 248 places, 250 transitions, 522 flow. Second operand 3 states and 728 transitions. [2022-11-16 11:40:54,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 255 transitions, 570 flow [2022-11-16 11:40:54,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 255 transitions, 570 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:40:54,380 INFO L231 Difference]: Finished difference. Result has 251 places, 251 transitions, 534 flow [2022-11-16 11:40:54,381 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=534, PETRI_PLACES=251, PETRI_TRANSITIONS=251} [2022-11-16 11:40:54,382 INFO L288 CegarLoopForPetriNet]: 248 programPoint places, 3 predicate places. [2022-11-16 11:40:54,383 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 251 transitions, 534 flow [2022-11-16 11:40:54,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:54,384 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:54,384 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:54,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:40:54,385 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-16 11:40:54,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:54,389 INFO L85 PathProgramCache]: Analyzing trace with hash -224756764, now seen corresponding path program 1 times [2022-11-16 11:40:54,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:54,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411457051] [2022-11-16 11:40:54,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:54,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:54,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:54,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:54,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411457051] [2022-11-16 11:40:54,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411457051] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:54,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:54,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:40:54,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618212692] [2022-11-16 11:40:54,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:54,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:40:54,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:54,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:40:54,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:40:54,661 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 268 [2022-11-16 11:40:54,663 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 251 transitions, 534 flow. Second operand has 4 states, 4 states have (on average 232.75) internal successors, (931), 4 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:54,663 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:40:54,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 268 [2022-11-16 11:40:54,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:40:54,926 INFO L130 PetriNetUnfolder]: 15/477 cut-off events. [2022-11-16 11:40:54,927 INFO L131 PetriNetUnfolder]: For 34/50 co-relation queries the response was YES. [2022-11-16 11:40:54,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 477 events. 15/477 cut-off events. For 34/50 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1791 event pairs, 0 based on Foata normal form. 0/425 useless extension candidates. Maximal degree in co-relation 531. Up to 25 conditions per place. [2022-11-16 11:40:54,933 INFO L137 encePairwiseOnDemand]: 262/268 looper letters, 23 selfloop transitions, 4 changer transitions 0/258 dead transitions. [2022-11-16 11:40:54,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 258 transitions, 602 flow [2022-11-16 11:40:54,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:40:54,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:40:54,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1184 transitions. [2022-11-16 11:40:54,937 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8835820895522388 [2022-11-16 11:40:54,938 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1184 transitions. [2022-11-16 11:40:54,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1184 transitions. [2022-11-16 11:40:54,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:40:54,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1184 transitions. [2022-11-16 11:40:54,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 236.8) internal successors, (1184), 5 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:54,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 268.0) internal successors, (1608), 6 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:54,948 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 268.0) internal successors, (1608), 6 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:54,948 INFO L175 Difference]: Start difference. First operand has 251 places, 251 transitions, 534 flow. Second operand 5 states and 1184 transitions. [2022-11-16 11:40:54,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 258 transitions, 602 flow [2022-11-16 11:40:54,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 258 transitions, 600 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:40:54,956 INFO L231 Difference]: Finished difference. Result has 257 places, 253 transitions, 558 flow [2022-11-16 11:40:54,957 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=558, PETRI_PLACES=257, PETRI_TRANSITIONS=253} [2022-11-16 11:40:54,958 INFO L288 CegarLoopForPetriNet]: 248 programPoint places, 9 predicate places. [2022-11-16 11:40:54,958 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 253 transitions, 558 flow [2022-11-16 11:40:54,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 232.75) internal successors, (931), 4 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:54,960 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:54,960 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:54,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:40:54,961 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-16 11:40:54,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:54,962 INFO L85 PathProgramCache]: Analyzing trace with hash -735730463, now seen corresponding path program 1 times [2022-11-16 11:40:54,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:54,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245505640] [2022-11-16 11:40:54,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:54,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:55,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:55,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:55,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245505640] [2022-11-16 11:40:55,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245505640] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:40:55,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210507478] [2022-11-16 11:40:55,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:55,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:40:55,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:40:55,220 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:40:55,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:40:55,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:55,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:40:55,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:40:55,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:55,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:40:55,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:55,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210507478] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:40:55,695 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:40:55,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 11:40:55,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634233436] [2022-11-16 11:40:55,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:40:55,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:40:55,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:55,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:40:55,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:40:55,706 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 268 [2022-11-16 11:40:55,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 253 transitions, 558 flow. Second operand has 10 states, 10 states have (on average 234.0) internal successors, (2340), 10 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:55,714 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:40:55,715 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 268 [2022-11-16 11:40:55,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:40:56,103 INFO L130 PetriNetUnfolder]: 15/497 cut-off events. [2022-11-16 11:40:56,104 INFO L131 PetriNetUnfolder]: For 40/56 co-relation queries the response was YES. [2022-11-16 11:40:56,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 585 conditions, 497 events. 15/497 cut-off events. For 40/56 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1696 event pairs, 0 based on Foata normal form. 3/450 useless extension candidates. Maximal degree in co-relation 575. Up to 16 conditions per place. [2022-11-16 11:40:56,111 INFO L137 encePairwiseOnDemand]: 260/268 looper letters, 26 selfloop transitions, 11 changer transitions 0/268 dead transitions. [2022-11-16 11:40:56,111 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 268 transitions, 670 flow [2022-11-16 11:40:56,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:40:56,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:40:56,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2581 transitions. [2022-11-16 11:40:56,128 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8755088195386703 [2022-11-16 11:40:56,129 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2581 transitions. [2022-11-16 11:40:56,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2581 transitions. [2022-11-16 11:40:56,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:40:56,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2581 transitions. [2022-11-16 11:40:56,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 234.63636363636363) internal successors, (2581), 11 states have internal predecessors, (2581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:56,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 268.0) internal successors, (3216), 12 states have internal predecessors, (3216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:56,153 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 268.0) internal successors, (3216), 12 states have internal predecessors, (3216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:56,153 INFO L175 Difference]: Start difference. First operand has 257 places, 253 transitions, 558 flow. Second operand 11 states and 2581 transitions. [2022-11-16 11:40:56,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 268 transitions, 670 flow [2022-11-16 11:40:56,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 268 transitions, 666 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:40:56,163 INFO L231 Difference]: Finished difference. Result has 270 places, 258 transitions, 620 flow [2022-11-16 11:40:56,164 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=620, PETRI_PLACES=270, PETRI_TRANSITIONS=258} [2022-11-16 11:40:56,166 INFO L288 CegarLoopForPetriNet]: 248 programPoint places, 22 predicate places. [2022-11-16 11:40:56,167 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 258 transitions, 620 flow [2022-11-16 11:40:56,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 234.0) internal successors, (2340), 10 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:56,170 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:56,171 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:56,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:40:56,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:40:56,380 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-16 11:40:56,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:56,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1319994086, now seen corresponding path program 1 times [2022-11-16 11:40:56,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:56,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141057281] [2022-11-16 11:40:56,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:56,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:56,718 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:56,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:56,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141057281] [2022-11-16 11:40:56,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141057281] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:40:56,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130533244] [2022-11-16 11:40:56,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:56,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:40:56,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:40:56,724 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:40:56,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:40:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:56,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:40:56,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:40:57,026 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:57,026 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:40:57,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130533244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:57,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:40:57,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:40:57,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807628521] [2022-11-16 11:40:57,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:57,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:40:57,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:57,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:40:57,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:40:57,032 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 268 [2022-11-16 11:40:57,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 258 transitions, 620 flow. Second operand has 6 states, 6 states have (on average 233.66666666666666) internal successors, (1402), 6 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:57,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:40:57,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 268 [2022-11-16 11:40:57,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:40:57,251 INFO L130 PetriNetUnfolder]: 15/495 cut-off events. [2022-11-16 11:40:57,251 INFO L131 PetriNetUnfolder]: For 61/77 co-relation queries the response was YES. [2022-11-16 11:40:57,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 604 conditions, 495 events. 15/495 cut-off events. For 61/77 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1674 event pairs, 0 based on Foata normal form. 2/447 useless extension candidates. Maximal degree in co-relation 590. Up to 22 conditions per place. [2022-11-16 11:40:57,258 INFO L137 encePairwiseOnDemand]: 263/268 looper letters, 22 selfloop transitions, 8 changer transitions 0/261 dead transitions. [2022-11-16 11:40:57,259 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 261 transitions, 678 flow [2022-11-16 11:40:57,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:40:57,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:40:57,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1644 transitions. [2022-11-16 11:40:57,264 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8763326226012793 [2022-11-16 11:40:57,265 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1644 transitions. [2022-11-16 11:40:57,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1644 transitions. [2022-11-16 11:40:57,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:40:57,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1644 transitions. [2022-11-16 11:40:57,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 234.85714285714286) internal successors, (1644), 7 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:57,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 268.0) internal successors, (2144), 8 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:57,310 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 268.0) internal successors, (2144), 8 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:57,310 INFO L175 Difference]: Start difference. First operand has 270 places, 258 transitions, 620 flow. Second operand 7 states and 1644 transitions. [2022-11-16 11:40:57,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 261 transitions, 678 flow [2022-11-16 11:40:57,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 261 transitions, 664 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-16 11:40:57,318 INFO L231 Difference]: Finished difference. Result has 270 places, 256 transitions, 608 flow [2022-11-16 11:40:57,319 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=608, PETRI_PLACES=270, PETRI_TRANSITIONS=256} [2022-11-16 11:40:57,326 INFO L288 CegarLoopForPetriNet]: 248 programPoint places, 22 predicate places. [2022-11-16 11:40:57,326 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 256 transitions, 608 flow [2022-11-16 11:40:57,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 233.66666666666666) internal successors, (1402), 6 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:57,327 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:57,328 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:57,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:40:57,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:40:57,535 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-16 11:40:57,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:57,536 INFO L85 PathProgramCache]: Analyzing trace with hash -798197374, now seen corresponding path program 1 times [2022-11-16 11:40:57,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:57,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130831451] [2022-11-16 11:40:57,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:57,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:57,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:57,700 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-16 11:40:57,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:57,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130831451] [2022-11-16 11:40:57,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130831451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:57,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:57,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:40:57,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774370019] [2022-11-16 11:40:57,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:57,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:40:57,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:57,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:40:57,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:40:57,705 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 268 [2022-11-16 11:40:57,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 256 transitions, 608 flow. Second operand has 4 states, 4 states have (on average 234.75) internal successors, (939), 4 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:57,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:40:57,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 268 [2022-11-16 11:40:57,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:40:57,866 INFO L130 PetriNetUnfolder]: 15/494 cut-off events. [2022-11-16 11:40:57,866 INFO L131 PetriNetUnfolder]: For 62/78 co-relation queries the response was YES. [2022-11-16 11:40:57,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 494 events. 15/494 cut-off events. For 62/78 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1674 event pairs, 0 based on Foata normal form. 1/445 useless extension candidates. Maximal degree in co-relation 587. Up to 17 conditions per place. [2022-11-16 11:40:57,873 INFO L137 encePairwiseOnDemand]: 262/268 looper letters, 13 selfloop transitions, 12 changer transitions 0/256 dead transitions. [2022-11-16 11:40:57,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 256 transitions, 656 flow [2022-11-16 11:40:57,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:40:57,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:40:57,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1174 transitions. [2022-11-16 11:40:57,877 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8761194029850746 [2022-11-16 11:40:57,877 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1174 transitions. [2022-11-16 11:40:57,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1174 transitions. [2022-11-16 11:40:57,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:40:57,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1174 transitions. [2022-11-16 11:40:57,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 234.8) internal successors, (1174), 5 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:57,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 268.0) internal successors, (1608), 6 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:57,886 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 268.0) internal successors, (1608), 6 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:57,887 INFO L175 Difference]: Start difference. First operand has 270 places, 256 transitions, 608 flow. Second operand 5 states and 1174 transitions. [2022-11-16 11:40:57,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 256 transitions, 656 flow [2022-11-16 11:40:57,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 256 transitions, 637 flow, removed 2 selfloop flow, removed 8 redundant places. [2022-11-16 11:40:57,894 INFO L231 Difference]: Finished difference. Result has 266 places, 256 transitions, 619 flow [2022-11-16 11:40:57,895 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=619, PETRI_PLACES=266, PETRI_TRANSITIONS=256} [2022-11-16 11:40:57,896 INFO L288 CegarLoopForPetriNet]: 248 programPoint places, 18 predicate places. [2022-11-16 11:40:57,896 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 256 transitions, 619 flow [2022-11-16 11:40:57,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 234.75) internal successors, (939), 4 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:57,897 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:57,898 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:57,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:40:57,898 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-16 11:40:57,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:57,899 INFO L85 PathProgramCache]: Analyzing trace with hash -629082237, now seen corresponding path program 2 times [2022-11-16 11:40:57,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:57,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066020163] [2022-11-16 11:40:57,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:57,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:58,070 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-16 11:40:58,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:58,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066020163] [2022-11-16 11:40:58,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066020163] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:58,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:58,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:40:58,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329602240] [2022-11-16 11:40:58,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:58,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:40:58,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:58,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:40:58,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:40:58,075 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 268 [2022-11-16 11:40:58,076 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 256 transitions, 619 flow. Second operand has 4 states, 4 states have (on average 233.75) internal successors, (935), 4 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:58,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:40:58,077 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 268 [2022-11-16 11:40:58,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:40:58,249 INFO L130 PetriNetUnfolder]: 10/374 cut-off events. [2022-11-16 11:40:58,250 INFO L131 PetriNetUnfolder]: For 55/101 co-relation queries the response was YES. [2022-11-16 11:40:58,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 374 events. 10/374 cut-off events. For 55/101 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 923 event pairs, 0 based on Foata normal form. 6/345 useless extension candidates. Maximal degree in co-relation 456. Up to 15 conditions per place. [2022-11-16 11:40:58,255 INFO L137 encePairwiseOnDemand]: 261/268 looper letters, 14 selfloop transitions, 4 changer transitions 0/256 dead transitions. [2022-11-16 11:40:58,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 256 transitions, 655 flow [2022-11-16 11:40:58,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:40:58,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:40:58,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1181 transitions. [2022-11-16 11:40:58,261 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8813432835820896 [2022-11-16 11:40:58,262 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1181 transitions. [2022-11-16 11:40:58,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1181 transitions. [2022-11-16 11:40:58,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:40:58,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1181 transitions. [2022-11-16 11:40:58,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 236.2) internal successors, (1181), 5 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:58,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 268.0) internal successors, (1608), 6 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:58,271 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 268.0) internal successors, (1608), 6 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:58,271 INFO L175 Difference]: Start difference. First operand has 266 places, 256 transitions, 619 flow. Second operand 5 states and 1181 transitions. [2022-11-16 11:40:58,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 256 transitions, 655 flow [2022-11-16 11:40:58,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 256 transitions, 637 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:40:58,286 INFO L231 Difference]: Finished difference. Result has 266 places, 254 transitions, 609 flow [2022-11-16 11:40:58,287 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=609, PETRI_PLACES=266, PETRI_TRANSITIONS=254} [2022-11-16 11:40:58,288 INFO L288 CegarLoopForPetriNet]: 248 programPoint places, 18 predicate places. [2022-11-16 11:40:58,288 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 254 transitions, 609 flow [2022-11-16 11:40:58,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 233.75) internal successors, (935), 4 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:58,292 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:58,292 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:58,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:40:58,292 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-16 11:40:58,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:58,299 INFO L85 PathProgramCache]: Analyzing trace with hash 851622262, now seen corresponding path program 1 times [2022-11-16 11:40:58,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:58,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27741740] [2022-11-16 11:40:58,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:58,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:58,662 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:40:58,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:58,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27741740] [2022-11-16 11:40:58,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27741740] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:40:58,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165328595] [2022-11-16 11:40:58,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:58,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:40:58,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:40:58,670 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:40:58,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:40:58,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:58,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:40:58,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:40:59,064 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:40:59,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:40:59,306 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:40:59,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165328595] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:40:59,307 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:40:59,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-16 11:40:59,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896022959] [2022-11-16 11:40:59,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:40:59,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:40:59,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:59,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:40:59,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:40:59,317 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 268 [2022-11-16 11:40:59,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 254 transitions, 609 flow. Second operand has 18 states, 18 states have (on average 234.44444444444446) internal successors, (4220), 18 states have internal predecessors, (4220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:59,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:40:59,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 268 [2022-11-16 11:40:59,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:40:59,800 INFO L130 PetriNetUnfolder]: 10/446 cut-off events. [2022-11-16 11:40:59,800 INFO L131 PetriNetUnfolder]: For 85/99 co-relation queries the response was YES. [2022-11-16 11:40:59,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 625 conditions, 446 events. 10/446 cut-off events. For 85/99 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 926 event pairs, 0 based on Foata normal form. 4/416 useless extension candidates. Maximal degree in co-relation 612. Up to 15 conditions per place. [2022-11-16 11:40:59,806 INFO L137 encePairwiseOnDemand]: 262/268 looper letters, 45 selfloop transitions, 21 changer transitions 0/295 dead transitions. [2022-11-16 11:40:59,806 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 295 transitions, 907 flow [2022-11-16 11:40:59,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:40:59,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 11:40:59,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4921 transitions. [2022-11-16 11:40:59,818 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8743781094527363 [2022-11-16 11:40:59,819 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4921 transitions. [2022-11-16 11:40:59,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4921 transitions. [2022-11-16 11:40:59,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:40:59,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4921 transitions. [2022-11-16 11:40:59,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 234.33333333333334) internal successors, (4921), 21 states have internal predecessors, (4921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:59,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 268.0) internal successors, (5896), 22 states have internal predecessors, (5896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:59,851 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 268.0) internal successors, (5896), 22 states have internal predecessors, (5896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:59,851 INFO L175 Difference]: Start difference. First operand has 266 places, 254 transitions, 609 flow. Second operand 21 states and 4921 transitions. [2022-11-16 11:40:59,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 295 transitions, 907 flow [2022-11-16 11:40:59,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 295 transitions, 899 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:40:59,860 INFO L231 Difference]: Finished difference. Result has 287 places, 267 transitions, 757 flow [2022-11-16 11:40:59,861 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=757, PETRI_PLACES=287, PETRI_TRANSITIONS=267} [2022-11-16 11:40:59,861 INFO L288 CegarLoopForPetriNet]: 248 programPoint places, 39 predicate places. [2022-11-16 11:40:59,862 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 267 transitions, 757 flow [2022-11-16 11:40:59,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 234.44444444444446) internal successors, (4220), 18 states have internal predecessors, (4220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:59,865 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:40:59,865 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:59,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:41:00,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-16 11:41:00,072 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-16 11:41:00,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:00,073 INFO L85 PathProgramCache]: Analyzing trace with hash 928374714, now seen corresponding path program 2 times [2022-11-16 11:41:00,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:41:00,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434130820] [2022-11-16 11:41:00,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:00,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:41:00,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:01,029 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:41:01,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:41:01,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434130820] [2022-11-16 11:41:01,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434130820] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:41:01,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057014161] [2022-11-16 11:41:01,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:41:01,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:41:01,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:41:01,036 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:41:01,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:41:01,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:41:01,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:41:01,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 11:41:01,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:41:01,667 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:41:01,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:41:02,321 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:41:02,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057014161] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:41:02,322 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:41:02,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2022-11-16 11:41:02,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464761965] [2022-11-16 11:41:02,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:41:02,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-16 11:41:02,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:41:02,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-16 11:41:02,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2022-11-16 11:41:02,335 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 268 [2022-11-16 11:41:02,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 267 transitions, 757 flow. Second operand has 34 states, 34 states have (on average 234.7058823529412) internal successors, (7980), 34 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:02,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:41:02,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 268 [2022-11-16 11:41:02,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:41:03,524 INFO L130 PetriNetUnfolder]: 10/590 cut-off events. [2022-11-16 11:41:03,525 INFO L131 PetriNetUnfolder]: For 432/446 co-relation queries the response was YES. [2022-11-16 11:41:03,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 998 conditions, 590 events. 10/590 cut-off events. For 432/446 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 925 event pairs, 0 based on Foata normal form. 8/564 useless extension candidates. Maximal degree in co-relation 981. Up to 19 conditions per place. [2022-11-16 11:41:03,532 INFO L137 encePairwiseOnDemand]: 262/268 looper letters, 85 selfloop transitions, 45 changer transitions 0/359 dead transitions. [2022-11-16 11:41:03,532 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 359 transitions, 1485 flow [2022-11-16 11:41:03,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-16 11:41:03,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-16 11:41:03,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 10533 transitions. [2022-11-16 11:41:03,560 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8733830845771144 [2022-11-16 11:41:03,560 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 10533 transitions. [2022-11-16 11:41:03,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 10533 transitions. [2022-11-16 11:41:03,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:41:03,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 10533 transitions. [2022-11-16 11:41:03,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 234.06666666666666) internal successors, (10533), 45 states have internal predecessors, (10533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:03,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 268.0) internal successors, (12328), 46 states have internal predecessors, (12328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:03,619 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 268.0) internal successors, (12328), 46 states have internal predecessors, (12328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:03,619 INFO L175 Difference]: Start difference. First operand has 287 places, 267 transitions, 757 flow. Second operand 45 states and 10533 transitions. [2022-11-16 11:41:03,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 359 transitions, 1485 flow [2022-11-16 11:41:03,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 359 transitions, 1419 flow, removed 26 selfloop flow, removed 7 redundant places. [2022-11-16 11:41:03,631 INFO L231 Difference]: Finished difference. Result has 333 places, 292 transitions, 1059 flow [2022-11-16 11:41:03,631 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1059, PETRI_PLACES=333, PETRI_TRANSITIONS=292} [2022-11-16 11:41:03,632 INFO L288 CegarLoopForPetriNet]: 248 programPoint places, 85 predicate places. [2022-11-16 11:41:03,633 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 292 transitions, 1059 flow [2022-11-16 11:41:03,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 234.7058823529412) internal successors, (7980), 34 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:03,636 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:41:03,636 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:41:03,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:41:03,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:41:03,844 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-16 11:41:03,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:03,844 INFO L85 PathProgramCache]: Analyzing trace with hash 635060290, now seen corresponding path program 3 times [2022-11-16 11:41:03,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:41:03,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764351902] [2022-11-16 11:41:03,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:03,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:41:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:06,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1910 backedges. 0 proven. 1905 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:41:06,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:41:06,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764351902] [2022-11-16 11:41:06,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764351902] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:41:06,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216957560] [2022-11-16 11:41:06,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:41:06,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:41:06,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:41:06,600 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:41:06,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97fc7a-ccfd-42e2-8b4c-2a29073e9b77/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process