./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b 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_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP --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 00b544e07f34285bd260f481b4b1205a15ed1c83d300c57496244de51f7f3936 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:09:53,395 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:09:53,537 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 23:09:53,548 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:09:53,550 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:09:53,583 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:09:53,584 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:09:53,585 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:09:53,586 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:09:53,587 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:09:53,588 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:09:53,589 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:09:53,590 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:09:53,590 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:09:53,591 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:09:53,592 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:09:53,593 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:09:53,593 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:09:53,594 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:09:53,594 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:09:53,595 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:09:53,596 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:09:53,597 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 23:09:53,597 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:09:53,598 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:09:53,598 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:09:53,599 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:09:53,599 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:09:53,600 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:09:53,600 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:09:53,601 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:09:53,602 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:09:53,602 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:09:53,602 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:09:53,603 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:09:53,603 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:09:53,603 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:09:53,604 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:09:53,604 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:09:53,604 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:09:53,604 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:09:53,605 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00b544e07f34285bd260f481b4b1205a15ed1c83d300c57496244de51f7f3936 [2023-11-06 23:09:53,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:09:53,999 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:09:54,007 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:09:54,009 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:09:54,010 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:09:54,012 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c [2023-11-06 23:09:57,579 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:09:57,845 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:09:57,846 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c [2023-11-06 23:09:57,855 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/data/143fd349d/18af63d58e5140329fbac94e6f0f0914/FLAG042b66bfe [2023-11-06 23:09:57,880 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/data/143fd349d/18af63d58e5140329fbac94e6f0f0914 [2023-11-06 23:09:57,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:09:57,892 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:09:57,896 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:09:57,897 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:09:57,903 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:09:57,904 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:09:57" (1/1) ... [2023-11-06 23:09:57,906 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e2629f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:57, skipping insertion in model container [2023-11-06 23:09:57,906 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:09:57" (1/1) ... [2023-11-06 23:09:57,937 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:09:58,157 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:09:58,170 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:09:58,206 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:09:58,217 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:09:58,218 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:09:58,228 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:09:58,228 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:58 WrapperNode [2023-11-06 23:09:58,229 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:09:58,230 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:09:58,230 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:09:58,231 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:09:58,240 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:58" (1/1) ... [2023-11-06 23:09:58,251 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:58" (1/1) ... [2023-11-06 23:09:58,292 INFO L138 Inliner]: procedures = 24, calls = 46, calls flagged for inlining = 14, calls inlined = 16, statements flattened = 211 [2023-11-06 23:09:58,292 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:09:58,293 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:09:58,293 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:09:58,293 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:09:58,306 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:58" (1/1) ... [2023-11-06 23:09:58,306 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:58" (1/1) ... [2023-11-06 23:09:58,311 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:58" (1/1) ... [2023-11-06 23:09:58,311 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:58" (1/1) ... [2023-11-06 23:09:58,324 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:58" (1/1) ... [2023-11-06 23:09:58,330 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:58" (1/1) ... [2023-11-06 23:09:58,333 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:58" (1/1) ... [2023-11-06 23:09:58,335 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:58" (1/1) ... [2023-11-06 23:09:58,340 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:09:58,341 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:09:58,342 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:09:58,342 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:09:58,343 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:58" (1/1) ... [2023-11-06 23:09:58,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:09:58,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:09:58,387 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:09:58,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:09:58,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:09:58,440 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 23:09:58,441 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 23:09:58,441 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 23:09:58,441 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 23:09:58,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:09:58,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:09:58,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:09:58,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 23:09:58,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 23:09:58,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 23:09:58,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:09:58,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:09:58,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 23:09:58,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:09:58,445 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 23:09:58,577 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:09:58,579 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:09:59,111 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:09:59,419 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:09:59,420 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 23:09:59,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:09:59 BoogieIcfgContainer [2023-11-06 23:09:59,426 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:09:59,430 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:09:59,431 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:09:59,435 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:09:59,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:09:57" (1/3) ... [2023-11-06 23:09:59,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ea071c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:09:59, skipping insertion in model container [2023-11-06 23:09:59,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:09:58" (2/3) ... [2023-11-06 23:09:59,440 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ea071c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:09:59, skipping insertion in model container [2023-11-06 23:09:59,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:09:59" (3/3) ... [2023-11-06 23:09:59,443 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-fun.wvr.c [2023-11-06 23:09:59,457 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 23:09:59,471 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:09:59,472 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-06 23:09:59,472 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 23:09:59,575 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 23:09:59,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 188 transitions, 390 flow [2023-11-06 23:09:59,693 INFO L124 PetriNetUnfolderBase]: 13/186 cut-off events. [2023-11-06 23:09:59,693 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 23:09:59,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 186 events. 13/186 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 142 event pairs, 0 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 144. Up to 2 conditions per place. [2023-11-06 23:09:59,699 INFO L82 GeneralOperation]: Start removeDead. Operand has 182 places, 188 transitions, 390 flow [2023-11-06 23:09:59,706 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 164 transitions, 337 flow [2023-11-06 23:09:59,710 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:09:59,720 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 164 transitions, 337 flow [2023-11-06 23:09:59,723 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 164 transitions, 337 flow [2023-11-06 23:09:59,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 164 transitions, 337 flow [2023-11-06 23:09:59,765 INFO L124 PetriNetUnfolderBase]: 12/164 cut-off events. [2023-11-06 23:09:59,765 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 23:09:59,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 164 events. 12/164 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 139 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 144. Up to 2 conditions per place. [2023-11-06 23:09:59,769 INFO L119 LiptonReduction]: Number of co-enabled transitions 900 [2023-11-06 23:10:07,913 INFO L134 LiptonReduction]: Checked pairs total: 990 [2023-11-06 23:10:07,913 INFO L136 LiptonReduction]: Total number of compositions: 177 [2023-11-06 23:10:07,929 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:10:07,936 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;@19bd627c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:10:07,937 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-11-06 23:10:07,939 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:10:07,940 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 23:10:07,940 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:10:07,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:10:07,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 23:10:07,941 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 23:10:07,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:07,947 INFO L85 PathProgramCache]: Analyzing trace with hash 27584, now seen corresponding path program 1 times [2023-11-06 23:10:07,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:07,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228664164] [2023-11-06 23:10:07,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:07,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:08,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:08,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:10:08,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:08,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228664164] [2023-11-06 23:10:08,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228664164] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:08,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:08,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:10:08,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747671512] [2023-11-06 23:10:08,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:08,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:10:08,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:08,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:10:08,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:10:08,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 365 [2023-11-06 23:10:08,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 25 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:08,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:10:08,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 365 [2023-11-06 23:10:08,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:10:08,583 INFO L124 PetriNetUnfolderBase]: 140/219 cut-off events. [2023-11-06 23:10:08,583 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-06 23:10:08,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 453 conditions, 219 events. 140/219 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 719 event pairs, 62 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 362. Up to 211 conditions per place. [2023-11-06 23:10:08,590 INFO L140 encePairwiseOnDemand]: 356/365 looper letters, 22 selfloop transitions, 5 changer transitions 0/29 dead transitions. [2023-11-06 23:10:08,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 29 transitions, 121 flow [2023-11-06 23:10:08,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:10:08,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:10:08,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 517 transitions. [2023-11-06 23:10:08,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47214611872146117 [2023-11-06 23:10:08,611 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 517 transitions. [2023-11-06 23:10:08,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 517 transitions. [2023-11-06 23:10:08,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:10:08,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 517 transitions. [2023-11-06 23:10:08,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:08,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:08,630 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:08,632 INFO L175 Difference]: Start difference. First operand has 28 places, 25 transitions, 59 flow. Second operand 3 states and 517 transitions. [2023-11-06 23:10:08,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 29 transitions, 121 flow [2023-11-06 23:10:08,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 29 transitions, 116 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 23:10:08,637 INFO L231 Difference]: Finished difference. Result has 29 places, 29 transitions, 98 flow [2023-11-06 23:10:08,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=29, PETRI_TRANSITIONS=29} [2023-11-06 23:10:08,643 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2023-11-06 23:10:08,644 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 29 transitions, 98 flow [2023-11-06 23:10:08,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:08,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:10:08,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 23:10:08,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:10:08,645 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 23:10:08,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:08,646 INFO L85 PathProgramCache]: Analyzing trace with hash 856741, now seen corresponding path program 1 times [2023-11-06 23:10:08,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:08,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747836341] [2023-11-06 23:10:08,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:08,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:08,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:08,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:10:08,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:08,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747836341] [2023-11-06 23:10:08,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747836341] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:10:08,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690769699] [2023-11-06 23:10:08,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:08,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:10:08,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:10:08,871 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:10:08,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 23:10:08,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:08,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:10:08,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:10:09,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:10:09,028 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:10:09,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:10:09,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690769699] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:10:09,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:10:09,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-06 23:10:09,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461786339] [2023-11-06 23:10:09,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:10:09,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:10:09,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:09,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:10:09,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:10:09,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 365 [2023-11-06 23:10:09,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 29 transitions, 98 flow. Second operand has 7 states, 7 states have (on average 163.14285714285714) internal successors, (1142), 7 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:09,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:10:09,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 365 [2023-11-06 23:10:09,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:10:09,293 INFO L124 PetriNetUnfolderBase]: 152/237 cut-off events. [2023-11-06 23:10:09,293 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 23:10:09,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 522 conditions, 237 events. 152/237 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 781 event pairs, 62 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 417. Up to 212 conditions per place. [2023-11-06 23:10:09,296 INFO L140 encePairwiseOnDemand]: 356/365 looper letters, 20 selfloop transitions, 25 changer transitions 0/47 dead transitions. [2023-11-06 23:10:09,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 47 transitions, 266 flow [2023-11-06 23:10:09,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:10:09,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 23:10:09,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1185 transitions. [2023-11-06 23:10:09,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4637964774951076 [2023-11-06 23:10:09,304 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1185 transitions. [2023-11-06 23:10:09,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1185 transitions. [2023-11-06 23:10:09,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:10:09,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1185 transitions. [2023-11-06 23:10:09,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 169.28571428571428) internal successors, (1185), 7 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:09,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 365.0) internal successors, (2920), 8 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:09,320 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 365.0) internal successors, (2920), 8 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:09,320 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 98 flow. Second operand 7 states and 1185 transitions. [2023-11-06 23:10:09,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 47 transitions, 266 flow [2023-11-06 23:10:09,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 47 transitions, 250 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:10:09,324 INFO L231 Difference]: Finished difference. Result has 36 places, 47 transitions, 252 flow [2023-11-06 23:10:09,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=252, PETRI_PLACES=36, PETRI_TRANSITIONS=47} [2023-11-06 23:10:09,325 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 8 predicate places. [2023-11-06 23:10:09,326 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 47 transitions, 252 flow [2023-11-06 23:10:09,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 163.14285714285714) internal successors, (1142), 7 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:09,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:10:09,328 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-11-06 23:10:09,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 23:10:09,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-06 23:10:09,535 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 23:10:09,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:09,536 INFO L85 PathProgramCache]: Analyzing trace with hash 26560607, now seen corresponding path program 1 times [2023-11-06 23:10:09,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:09,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945626797] [2023-11-06 23:10:09,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:09,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:09,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:09,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:10:09,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:09,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945626797] [2023-11-06 23:10:09,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945626797] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:09,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:09,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:10:09,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200421665] [2023-11-06 23:10:09,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:09,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:10:09,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:09,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:10:09,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:10:09,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 365 [2023-11-06 23:10:09,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 47 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 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) [2023-11-06 23:10:09,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:10:09,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 365 [2023-11-06 23:10:09,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:10:09,739 INFO L124 PetriNetUnfolderBase]: 146/229 cut-off events. [2023-11-06 23:10:09,740 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 23:10:09,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 531 conditions, 229 events. 146/229 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 756 event pairs, 62 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 466. Up to 206 conditions per place. [2023-11-06 23:10:09,743 INFO L140 encePairwiseOnDemand]: 361/365 looper letters, 31 selfloop transitions, 6 changer transitions 0/39 dead transitions. [2023-11-06 23:10:09,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 39 transitions, 272 flow [2023-11-06 23:10:09,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:10:09,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:10:09,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 509 transitions. [2023-11-06 23:10:09,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648401826484018 [2023-11-06 23:10:09,746 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 509 transitions. [2023-11-06 23:10:09,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 509 transitions. [2023-11-06 23:10:09,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:10:09,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 509 transitions. [2023-11-06 23:10:09,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:09,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:09,753 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:09,753 INFO L175 Difference]: Start difference. First operand has 36 places, 47 transitions, 252 flow. Second operand 3 states and 509 transitions. [2023-11-06 23:10:09,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 39 transitions, 272 flow [2023-11-06 23:10:09,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 39 transitions, 246 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-06 23:10:09,757 INFO L231 Difference]: Finished difference. Result has 34 places, 39 transitions, 184 flow [2023-11-06 23:10:09,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=34, PETRI_TRANSITIONS=39} [2023-11-06 23:10:09,758 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 6 predicate places. [2023-11-06 23:10:09,758 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 39 transitions, 184 flow [2023-11-06 23:10:09,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 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) [2023-11-06 23:10:09,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:10:09,759 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 23:10:09,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 23:10:09,760 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 23:10:09,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:09,760 INFO L85 PathProgramCache]: Analyzing trace with hash -245007104, now seen corresponding path program 2 times [2023-11-06 23:10:09,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:09,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523085660] [2023-11-06 23:10:09,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:09,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:09,942 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:10:09,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:09,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523085660] [2023-11-06 23:10:09,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523085660] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:10:09,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689085782] [2023-11-06 23:10:09,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:10:09,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:10:09,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:10:09,945 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:10:09,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 23:10:10,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 23:10:10,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:10:10,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 23:10:10,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:10:10,067 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 23:10:10,067 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:10:10,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689085782] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:10,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:10:10,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-06 23:10:10,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738921631] [2023-11-06 23:10:10,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:10,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:10:10,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:10,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:10:10,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:10:10,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 365 [2023-11-06 23:10:10,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 39 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:10,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:10:10,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 365 [2023-11-06 23:10:10,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:10:10,217 INFO L124 PetriNetUnfolderBase]: 146/228 cut-off events. [2023-11-06 23:10:10,217 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-06 23:10:10,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 228 events. 146/228 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 752 event pairs, 62 based on Foata normal form. 1/103 useless extension candidates. Maximal degree in co-relation 463. Up to 217 conditions per place. [2023-11-06 23:10:10,222 INFO L140 encePairwiseOnDemand]: 362/365 looper letters, 30 selfloop transitions, 6 changer transitions 0/38 dead transitions. [2023-11-06 23:10:10,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 38 transitions, 246 flow [2023-11-06 23:10:10,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:10:10,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:10:10,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 519 transitions. [2023-11-06 23:10:10,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.473972602739726 [2023-11-06 23:10:10,229 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 519 transitions. [2023-11-06 23:10:10,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 519 transitions. [2023-11-06 23:10:10,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:10:10,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 519 transitions. [2023-11-06 23:10:10,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:10,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:10,240 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:10,241 INFO L175 Difference]: Start difference. First operand has 34 places, 39 transitions, 184 flow. Second operand 3 states and 519 transitions. [2023-11-06 23:10:10,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 38 transitions, 246 flow [2023-11-06 23:10:10,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 38 transitions, 234 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:10:10,244 INFO L231 Difference]: Finished difference. Result has 33 places, 38 transitions, 174 flow [2023-11-06 23:10:10,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=33, PETRI_TRANSITIONS=38} [2023-11-06 23:10:10,245 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 5 predicate places. [2023-11-06 23:10:10,246 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 38 transitions, 174 flow [2023-11-06 23:10:10,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:10,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:10:10,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 23:10:10,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 23:10:10,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:10:10,447 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 23:10:10,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:10,448 INFO L85 PathProgramCache]: Analyzing trace with hash -240949460, now seen corresponding path program 1 times [2023-11-06 23:10:10,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:10,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198052680] [2023-11-06 23:10:10,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:10,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:10,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:10,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:10:10,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:10,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198052680] [2023-11-06 23:10:10,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198052680] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:10,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:10,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:10:10,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840420615] [2023-11-06 23:10:10,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:10,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:10:10,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:10,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:10:10,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:10:10,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 365 [2023-11-06 23:10:10,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 38 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:10,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:10:10,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 365 [2023-11-06 23:10:10,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:10:10,620 INFO L124 PetriNetUnfolderBase]: 160/254 cut-off events. [2023-11-06 23:10:10,620 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 23:10:10,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 575 conditions, 254 events. 160/254 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 872 event pairs, 65 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 520. Up to 218 conditions per place. [2023-11-06 23:10:10,623 INFO L140 encePairwiseOnDemand]: 360/365 looper letters, 43 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2023-11-06 23:10:10,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 47 transitions, 286 flow [2023-11-06 23:10:10,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:10:10,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:10:10,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 539 transitions. [2023-11-06 23:10:10,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4922374429223744 [2023-11-06 23:10:10,627 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 539 transitions. [2023-11-06 23:10:10,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 539 transitions. [2023-11-06 23:10:10,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:10:10,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 539 transitions. [2023-11-06 23:10:10,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:10,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:10,634 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:10,634 INFO L175 Difference]: Start difference. First operand has 33 places, 38 transitions, 174 flow. Second operand 3 states and 539 transitions. [2023-11-06 23:10:10,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 47 transitions, 286 flow [2023-11-06 23:10:10,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 47 transitions, 274 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:10:10,637 INFO L231 Difference]: Finished difference. Result has 34 places, 40 transitions, 183 flow [2023-11-06 23:10:10,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=34, PETRI_TRANSITIONS=40} [2023-11-06 23:10:10,638 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 6 predicate places. [2023-11-06 23:10:10,639 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 40 transitions, 183 flow [2023-11-06 23:10:10,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:10,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:10:10,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:10,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 23:10:10,640 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 23:10:10,640 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:10,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1120504201, now seen corresponding path program 1 times [2023-11-06 23:10:10,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:10,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079812197] [2023-11-06 23:10:10,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:10,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:10,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:10:10,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:10,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079812197] [2023-11-06 23:10:10,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079812197] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:10,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:10,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:10:10,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584154130] [2023-11-06 23:10:10,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:10,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:10:10,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:10,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:10:10,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:10:10,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 365 [2023-11-06 23:10:10,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 40 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:10,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:10:10,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 365 [2023-11-06 23:10:10,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:10:10,841 INFO L124 PetriNetUnfolderBase]: 145/227 cut-off events. [2023-11-06 23:10:10,842 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-11-06 23:10:10,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 610 conditions, 227 events. 145/227 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 741 event pairs, 26 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 556. Up to 116 conditions per place. [2023-11-06 23:10:10,844 INFO L140 encePairwiseOnDemand]: 362/365 looper letters, 42 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2023-11-06 23:10:10,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 46 transitions, 285 flow [2023-11-06 23:10:10,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:10:10,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:10:10,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 535 transitions. [2023-11-06 23:10:10,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4885844748858447 [2023-11-06 23:10:10,847 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 535 transitions. [2023-11-06 23:10:10,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 535 transitions. [2023-11-06 23:10:10,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:10:10,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 535 transitions. [2023-11-06 23:10:10,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:10,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:10,853 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:10,853 INFO L175 Difference]: Start difference. First operand has 34 places, 40 transitions, 183 flow. Second operand 3 states and 535 transitions. [2023-11-06 23:10:10,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 46 transitions, 285 flow [2023-11-06 23:10:10,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 46 transitions, 280 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 23:10:10,856 INFO L231 Difference]: Finished difference. Result has 34 places, 39 transitions, 180 flow [2023-11-06 23:10:10,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=34, PETRI_TRANSITIONS=39} [2023-11-06 23:10:10,858 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 6 predicate places. [2023-11-06 23:10:10,858 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 39 transitions, 180 flow [2023-11-06 23:10:10,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:10,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:10:10,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:10,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 23:10:10,859 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 23:10:10,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:10,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1120504223, now seen corresponding path program 1 times [2023-11-06 23:10:10,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:10,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400868093] [2023-11-06 23:10:10,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:10,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:10,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:10:10,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:10,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400868093] [2023-11-06 23:10:10,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400868093] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:10:10,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350433558] [2023-11-06 23:10:10,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:10,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:10:10,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:10:10,942 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:10:10,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 23:10:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:11,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 23:10:11,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:10:11,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:10:11,113 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:10:11,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350433558] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:11,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:10:11,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2023-11-06 23:10:11,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641533255] [2023-11-06 23:10:11,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:11,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:10:11,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:11,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:10:11,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:10:11,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 365 [2023-11-06 23:10:11,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 39 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 159.5) internal successors, (638), 4 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:11,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:10:11,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 365 [2023-11-06 23:10:11,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:10:11,348 INFO L124 PetriNetUnfolderBase]: 127/224 cut-off events. [2023-11-06 23:10:11,348 INFO L125 PetriNetUnfolderBase]: For 95/125 co-relation queries the response was YES. [2023-11-06 23:10:11,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 613 conditions, 224 events. 127/224 cut-off events. For 95/125 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 823 event pairs, 60 based on Foata normal form. 36/191 useless extension candidates. Maximal degree in co-relation 533. Up to 180 conditions per place. [2023-11-06 23:10:11,351 INFO L140 encePairwiseOnDemand]: 356/365 looper letters, 39 selfloop transitions, 4 changer transitions 13/58 dead transitions. [2023-11-06 23:10:11,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 58 transitions, 381 flow [2023-11-06 23:10:11,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:10:11,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 23:10:11,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 828 transitions. [2023-11-06 23:10:11,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4536986301369863 [2023-11-06 23:10:11,356 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 828 transitions. [2023-11-06 23:10:11,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 828 transitions. [2023-11-06 23:10:11,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:10:11,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 828 transitions. [2023-11-06 23:10:11,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 165.6) internal successors, (828), 5 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:11,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 365.0) internal successors, (2190), 6 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:11,366 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 365.0) internal successors, (2190), 6 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:11,366 INFO L175 Difference]: Start difference. First operand has 34 places, 39 transitions, 180 flow. Second operand 5 states and 828 transitions. [2023-11-06 23:10:11,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 58 transitions, 381 flow [2023-11-06 23:10:11,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 58 transitions, 373 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:10:11,370 INFO L231 Difference]: Finished difference. Result has 38 places, 40 transitions, 203 flow [2023-11-06 23:10:11,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=203, PETRI_PLACES=38, PETRI_TRANSITIONS=40} [2023-11-06 23:10:11,371 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 10 predicate places. [2023-11-06 23:10:11,371 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 40 transitions, 203 flow [2023-11-06 23:10:11,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 159.5) internal successors, (638), 4 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:11,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:10:11,375 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-11-06 23:10:11,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 23:10:11,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:10:11,581 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 23:10:11,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:11,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1130227346, now seen corresponding path program 1 times [2023-11-06 23:10:11,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:11,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914444089] [2023-11-06 23:10:11,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:11,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:11,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:11,715 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:10:11,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:11,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914444089] [2023-11-06 23:10:11,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914444089] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:10:11,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230437611] [2023-11-06 23:10:11,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:11,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:10:11,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:10:11,717 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:10:11,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 23:10:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:11,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 23:10:11,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:10:11,837 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:10:11,837 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:10:11,893 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:10:11,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230437611] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:10:11,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:10:11,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 23:10:11,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963638363] [2023-11-06 23:10:11,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:10:11,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 23:10:11,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:11,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 23:10:11,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-06 23:10:12,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 365 [2023-11-06 23:10:12,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 40 transitions, 203 flow. Second operand has 13 states, 13 states have (on average 163.15384615384616) internal successors, (2121), 13 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:12,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:10:12,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 365 [2023-11-06 23:10:12,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:10:12,160 INFO L124 PetriNetUnfolderBase]: 144/259 cut-off events. [2023-11-06 23:10:12,161 INFO L125 PetriNetUnfolderBase]: For 87/100 co-relation queries the response was YES. [2023-11-06 23:10:12,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 788 conditions, 259 events. 144/259 cut-off events. For 87/100 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1003 event pairs, 60 based on Foata normal form. 25/194 useless extension candidates. Maximal degree in co-relation 607. Up to 214 conditions per place. [2023-11-06 23:10:12,163 INFO L140 encePairwiseOnDemand]: 359/365 looper letters, 20 selfloop transitions, 42 changer transitions 0/64 dead transitions. [2023-11-06 23:10:12,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 64 transitions, 465 flow [2023-11-06 23:10:12,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 23:10:12,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 23:10:12,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2009 transitions. [2023-11-06 23:10:12,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.458675799086758 [2023-11-06 23:10:12,172 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2009 transitions. [2023-11-06 23:10:12,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2009 transitions. [2023-11-06 23:10:12,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:10:12,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2009 transitions. [2023-11-06 23:10:12,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 167.41666666666666) internal successors, (2009), 12 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:12,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 365.0) internal successors, (4745), 13 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:12,191 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 365.0) internal successors, (4745), 13 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:12,191 INFO L175 Difference]: Start difference. First operand has 38 places, 40 transitions, 203 flow. Second operand 12 states and 2009 transitions. [2023-11-06 23:10:12,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 64 transitions, 465 flow [2023-11-06 23:10:12,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 64 transitions, 457 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-06 23:10:12,195 INFO L231 Difference]: Finished difference. Result has 54 places, 64 transitions, 471 flow [2023-11-06 23:10:12,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=471, PETRI_PLACES=54, PETRI_TRANSITIONS=64} [2023-11-06 23:10:12,196 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 26 predicate places. [2023-11-06 23:10:12,196 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 64 transitions, 471 flow [2023-11-06 23:10:12,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 163.15384615384616) internal successors, (2121), 13 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:12,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:10:12,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:12,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 23:10:12,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:10:12,404 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 23:10:12,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:12,404 INFO L85 PathProgramCache]: Analyzing trace with hash 897214938, now seen corresponding path program 1 times [2023-11-06 23:10:12,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:12,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278489782] [2023-11-06 23:10:12,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:12,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:12,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:10:12,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:12,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278489782] [2023-11-06 23:10:12,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278489782] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:10:12,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673331516] [2023-11-06 23:10:12,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:12,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:10:12,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:10:12,487 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:10:12,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 23:10:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:12,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 23:10:12,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:10:12,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:10:12,636 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:10:12,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673331516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:12,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:10:12,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 6 [2023-11-06 23:10:12,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576893224] [2023-11-06 23:10:12,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:12,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:10:12,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:12,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:10:12,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:10:12,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 365 [2023-11-06 23:10:12,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 64 transitions, 471 flow. Second operand has 4 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:12,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:10:12,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 365 [2023-11-06 23:10:12,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:10:12,870 INFO L124 PetriNetUnfolderBase]: 152/287 cut-off events. [2023-11-06 23:10:12,870 INFO L125 PetriNetUnfolderBase]: For 128/146 co-relation queries the response was YES. [2023-11-06 23:10:12,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 968 conditions, 287 events. 152/287 cut-off events. For 128/146 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1196 event pairs, 69 based on Foata normal form. 30/244 useless extension candidates. Maximal degree in co-relation 845. Up to 241 conditions per place. [2023-11-06 23:10:12,873 INFO L140 encePairwiseOnDemand]: 358/365 looper letters, 48 selfloop transitions, 13 changer transitions 9/72 dead transitions. [2023-11-06 23:10:12,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 72 transitions, 633 flow [2023-11-06 23:10:12,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:10:12,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:10:12,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 665 transitions. [2023-11-06 23:10:12,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4554794520547945 [2023-11-06 23:10:12,876 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 665 transitions. [2023-11-06 23:10:12,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 665 transitions. [2023-11-06 23:10:12,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:10:12,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 665 transitions. [2023-11-06 23:10:12,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 166.25) internal successors, (665), 4 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:12,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 365.0) internal successors, (1825), 5 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:12,884 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 365.0) internal successors, (1825), 5 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:12,884 INFO L175 Difference]: Start difference. First operand has 54 places, 64 transitions, 471 flow. Second operand 4 states and 665 transitions. [2023-11-06 23:10:12,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 72 transitions, 633 flow [2023-11-06 23:10:12,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 72 transitions, 507 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-11-06 23:10:12,891 INFO L231 Difference]: Finished difference. Result has 53 places, 63 transitions, 372 flow [2023-11-06 23:10:12,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=372, PETRI_PLACES=53, PETRI_TRANSITIONS=63} [2023-11-06 23:10:12,892 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 25 predicate places. [2023-11-06 23:10:12,893 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 63 transitions, 372 flow [2023-11-06 23:10:12,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:12,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:10:12,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:12,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 23:10:13,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:10:13,099 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 23:10:13,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:13,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1959413455, now seen corresponding path program 1 times [2023-11-06 23:10:13,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:13,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144630128] [2023-11-06 23:10:13,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:13,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:13,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:13,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:10:13,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:13,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144630128] [2023-11-06 23:10:13,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144630128] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:10:13,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717770145] [2023-11-06 23:10:13,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:13,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:10:13,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:10:13,173 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:10:13,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 23:10:13,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:13,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:10:13,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:10:13,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:10:13,301 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:10:13,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:10:13,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717770145] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:10:13,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:10:13,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-06 23:10:13,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764934184] [2023-11-06 23:10:13,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:10:13,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:10:13,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:13,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:10:13,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:10:13,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 365 [2023-11-06 23:10:13,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 63 transitions, 372 flow. Second operand has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:13,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:10:13,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 365 [2023-11-06 23:10:13,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:10:13,543 INFO L124 PetriNetUnfolderBase]: 278/445 cut-off events. [2023-11-06 23:10:13,543 INFO L125 PetriNetUnfolderBase]: For 197/197 co-relation queries the response was YES. [2023-11-06 23:10:13,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1451 conditions, 445 events. 278/445 cut-off events. For 197/197 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1648 event pairs, 60 based on Foata normal form. 0/309 useless extension candidates. Maximal degree in co-relation 1348. Up to 290 conditions per place. [2023-11-06 23:10:13,548 INFO L140 encePairwiseOnDemand]: 361/365 looper letters, 87 selfloop transitions, 9 changer transitions 0/97 dead transitions. [2023-11-06 23:10:13,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 97 transitions, 700 flow [2023-11-06 23:10:13,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:10:13,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:10:13,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1073 transitions. [2023-11-06 23:10:13,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4899543378995434 [2023-11-06 23:10:13,554 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1073 transitions. [2023-11-06 23:10:13,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1073 transitions. [2023-11-06 23:10:13,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:10:13,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1073 transitions. [2023-11-06 23:10:13,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 178.83333333333334) internal successors, (1073), 6 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:13,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 365.0) internal successors, (2555), 7 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:13,565 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 365.0) internal successors, (2555), 7 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:13,565 INFO L175 Difference]: Start difference. First operand has 53 places, 63 transitions, 372 flow. Second operand 6 states and 1073 transitions. [2023-11-06 23:10:13,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 97 transitions, 700 flow [2023-11-06 23:10:13,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 97 transitions, 639 flow, removed 17 selfloop flow, removed 3 redundant places. [2023-11-06 23:10:13,571 INFO L231 Difference]: Finished difference. Result has 57 places, 69 transitions, 396 flow [2023-11-06 23:10:13,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=396, PETRI_PLACES=57, PETRI_TRANSITIONS=69} [2023-11-06 23:10:13,572 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 29 predicate places. [2023-11-06 23:10:13,572 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 69 transitions, 396 flow [2023-11-06 23:10:13,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:13,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:10:13,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:13,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 23:10:13,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:10:13,779 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 23:10:13,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:13,780 INFO L85 PathProgramCache]: Analyzing trace with hash -607354592, now seen corresponding path program 1 times [2023-11-06 23:10:13,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:13,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876942527] [2023-11-06 23:10:13,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:13,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:13,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:13,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:10:13,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:13,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876942527] [2023-11-06 23:10:13,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876942527] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:13,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:13,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:10:13,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742875174] [2023-11-06 23:10:13,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:13,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:10:13,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:13,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:10:13,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:10:13,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 365 [2023-11-06 23:10:13,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 69 transitions, 396 flow. Second operand has 3 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:13,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:10:13,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 365 [2023-11-06 23:10:13,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:10:14,003 INFO L124 PetriNetUnfolderBase]: 270/441 cut-off events. [2023-11-06 23:10:14,003 INFO L125 PetriNetUnfolderBase]: For 674/714 co-relation queries the response was YES. [2023-11-06 23:10:14,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1572 conditions, 441 events. 270/441 cut-off events. For 674/714 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1502 event pairs, 111 based on Foata normal form. 40/416 useless extension candidates. Maximal degree in co-relation 1469. Up to 381 conditions per place. [2023-11-06 23:10:14,008 INFO L140 encePairwiseOnDemand]: 360/365 looper letters, 81 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2023-11-06 23:10:14,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 85 transitions, 656 flow [2023-11-06 23:10:14,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:10:14,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:10:14,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 537 transitions. [2023-11-06 23:10:14,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4904109589041096 [2023-11-06 23:10:14,011 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 537 transitions. [2023-11-06 23:10:14,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 537 transitions. [2023-11-06 23:10:14,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:10:14,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 537 transitions. [2023-11-06 23:10:14,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:14,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:14,017 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:14,017 INFO L175 Difference]: Start difference. First operand has 57 places, 69 transitions, 396 flow. Second operand 3 states and 537 transitions. [2023-11-06 23:10:14,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 85 transitions, 656 flow [2023-11-06 23:10:14,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 85 transitions, 615 flow, removed 18 selfloop flow, removed 1 redundant places. [2023-11-06 23:10:14,023 INFO L231 Difference]: Finished difference. Result has 59 places, 71 transitions, 398 flow [2023-11-06 23:10:14,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=398, PETRI_PLACES=59, PETRI_TRANSITIONS=71} [2023-11-06 23:10:14,024 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 31 predicate places. [2023-11-06 23:10:14,024 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 71 transitions, 398 flow [2023-11-06 23:10:14,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:14,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:10:14,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:14,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 23:10:14,025 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 23:10:14,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:14,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1648120732, now seen corresponding path program 1 times [2023-11-06 23:10:14,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:14,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140144927] [2023-11-06 23:10:14,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:14,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:14,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:14,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:10:14,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:14,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140144927] [2023-11-06 23:10:14,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140144927] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:10:14,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865267414] [2023-11-06 23:10:14,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:14,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:10:14,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:10:14,131 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:10:14,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 23:10:14,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:14,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:10:14,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:10:14,261 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:10:14,261 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:10:14,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865267414] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:14,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:10:14,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-06 23:10:14,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032713722] [2023-11-06 23:10:14,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:14,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:10:14,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:14,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:10:14,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:10:14,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 365 [2023-11-06 23:10:14,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 71 transitions, 398 flow. Second operand has 4 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:14,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:10:14,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 365 [2023-11-06 23:10:14,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:10:14,417 INFO L124 PetriNetUnfolderBase]: 239/394 cut-off events. [2023-11-06 23:10:14,418 INFO L125 PetriNetUnfolderBase]: For 508/544 co-relation queries the response was YES. [2023-11-06 23:10:14,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1440 conditions, 394 events. 239/394 cut-off events. For 508/544 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1313 event pairs, 48 based on Foata normal form. 36/397 useless extension candidates. Maximal degree in co-relation 1335. Up to 224 conditions per place. [2023-11-06 23:10:14,422 INFO L140 encePairwiseOnDemand]: 361/365 looper letters, 93 selfloop transitions, 4 changer transitions 0/98 dead transitions. [2023-11-06 23:10:14,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 98 transitions, 718 flow [2023-11-06 23:10:14,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:10:14,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:10:14,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 710 transitions. [2023-11-06 23:10:14,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4863013698630137 [2023-11-06 23:10:14,426 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 710 transitions. [2023-11-06 23:10:14,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 710 transitions. [2023-11-06 23:10:14,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:10:14,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 710 transitions. [2023-11-06 23:10:14,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 177.5) internal successors, (710), 4 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:14,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 365.0) internal successors, (1825), 5 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:14,432 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 365.0) internal successors, (1825), 5 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:14,433 INFO L175 Difference]: Start difference. First operand has 59 places, 71 transitions, 398 flow. Second operand 4 states and 710 transitions. [2023-11-06 23:10:14,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 98 transitions, 718 flow [2023-11-06 23:10:14,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 98 transitions, 713 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 23:10:14,442 INFO L231 Difference]: Finished difference. Result has 60 places, 70 transitions, 395 flow [2023-11-06 23:10:14,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=395, PETRI_PLACES=60, PETRI_TRANSITIONS=70} [2023-11-06 23:10:14,445 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 32 predicate places. [2023-11-06 23:10:14,445 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 70 transitions, 395 flow [2023-11-06 23:10:14,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:14,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:10:14,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:14,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 23:10:14,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:10:14,651 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 23:10:14,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:14,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1648120709, now seen corresponding path program 1 times [2023-11-06 23:10:14,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:14,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241157492] [2023-11-06 23:10:14,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:14,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:14,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:14,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:10:14,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:14,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241157492] [2023-11-06 23:10:14,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241157492] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:10:14,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066704209] [2023-11-06 23:10:14,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:14,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:10:14,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:10:14,721 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:10:14,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 23:10:14,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:14,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:10:14,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:10:14,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:10:14,851 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:10:14,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:10:14,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066704209] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:10:14,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:10:14,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-06 23:10:14,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418257172] [2023-11-06 23:10:14,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:10:14,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:10:14,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:14,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:10:14,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:10:14,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 365 [2023-11-06 23:10:14,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 70 transitions, 395 flow. Second operand has 7 states, 7 states have (on average 171.28571428571428) internal successors, (1199), 7 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:14,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:10:14,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 365 [2023-11-06 23:10:14,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:10:15,072 INFO L124 PetriNetUnfolderBase]: 380/583 cut-off events. [2023-11-06 23:10:15,072 INFO L125 PetriNetUnfolderBase]: For 744/792 co-relation queries the response was YES. [2023-11-06 23:10:15,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2158 conditions, 583 events. 380/583 cut-off events. For 744/792 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1905 event pairs, 90 based on Foata normal form. 48/592 useless extension candidates. Maximal degree in co-relation 2053. Up to 382 conditions per place. [2023-11-06 23:10:15,078 INFO L140 encePairwiseOnDemand]: 361/365 looper letters, 122 selfloop transitions, 9 changer transitions 0/132 dead transitions. [2023-11-06 23:10:15,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 132 transitions, 957 flow [2023-11-06 23:10:15,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:10:15,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:10:15,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1068 transitions. [2023-11-06 23:10:15,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4876712328767123 [2023-11-06 23:10:15,083 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1068 transitions. [2023-11-06 23:10:15,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1068 transitions. [2023-11-06 23:10:15,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:10:15,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1068 transitions. [2023-11-06 23:10:15,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:15,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 365.0) internal successors, (2555), 7 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:15,093 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 365.0) internal successors, (2555), 7 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:15,093 INFO L175 Difference]: Start difference. First operand has 60 places, 70 transitions, 395 flow. Second operand 6 states and 1068 transitions. [2023-11-06 23:10:15,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 132 transitions, 957 flow [2023-11-06 23:10:15,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 132 transitions, 948 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:10:15,102 INFO L231 Difference]: Finished difference. Result has 66 places, 76 transitions, 459 flow [2023-11-06 23:10:15,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=459, PETRI_PLACES=66, PETRI_TRANSITIONS=76} [2023-11-06 23:10:15,103 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 38 predicate places. [2023-11-06 23:10:15,140 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 76 transitions, 459 flow [2023-11-06 23:10:15,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 171.28571428571428) internal successors, (1199), 7 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:15,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:10:15,141 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:15,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 23:10:15,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 23:10:15,342 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 23:10:15,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:15,343 INFO L85 PathProgramCache]: Analyzing trace with hash 16475568, now seen corresponding path program 2 times [2023-11-06 23:10:15,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:15,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446872015] [2023-11-06 23:10:15,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:15,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:15,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:15,469 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:10:15,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:15,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446872015] [2023-11-06 23:10:15,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446872015] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:10:15,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101294742] [2023-11-06 23:10:15,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:10:15,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:10:15,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:10:15,472 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:10:15,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 23:10:15,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 23:10:15,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:10:15,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:10:15,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:10:15,619 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-06 23:10:15,620 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:10:15,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101294742] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:15,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:10:15,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-11-06 23:10:15,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886058500] [2023-11-06 23:10:15,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:15,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:10:15,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:15,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:10:15,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:10:15,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 365 [2023-11-06 23:10:15,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 76 transitions, 459 flow. Second operand has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:15,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:10:15,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 365 [2023-11-06 23:10:15,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:10:15,743 INFO L124 PetriNetUnfolderBase]: 284/440 cut-off events. [2023-11-06 23:10:15,743 INFO L125 PetriNetUnfolderBase]: For 944/1002 co-relation queries the response was YES. [2023-11-06 23:10:15,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1772 conditions, 440 events. 284/440 cut-off events. For 944/1002 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1385 event pairs, 114 based on Foata normal form. 86/507 useless extension candidates. Maximal degree in co-relation 1664. Up to 433 conditions per place. [2023-11-06 23:10:15,747 INFO L140 encePairwiseOnDemand]: 362/365 looper letters, 35 selfloop transitions, 1 changer transitions 38/74 dead transitions. [2023-11-06 23:10:15,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 74 transitions, 581 flow [2023-11-06 23:10:15,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:10:15,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:10:15,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 528 transitions. [2023-11-06 23:10:15,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4821917808219178 [2023-11-06 23:10:15,751 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 528 transitions. [2023-11-06 23:10:15,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 528 transitions. [2023-11-06 23:10:15,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:10:15,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 528 transitions. [2023-11-06 23:10:15,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:15,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:15,756 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:15,756 INFO L175 Difference]: Start difference. First operand has 66 places, 76 transitions, 459 flow. Second operand 3 states and 528 transitions. [2023-11-06 23:10:15,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 74 transitions, 581 flow [2023-11-06 23:10:15,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 74 transitions, 528 flow, removed 13 selfloop flow, removed 9 redundant places. [2023-11-06 23:10:15,763 INFO L231 Difference]: Finished difference. Result has 57 places, 36 transitions, 230 flow [2023-11-06 23:10:15,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=57, PETRI_TRANSITIONS=36} [2023-11-06 23:10:15,764 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 29 predicate places. [2023-11-06 23:10:15,764 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 36 transitions, 230 flow [2023-11-06 23:10:15,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:15,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:10:15,765 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2023-11-06 23:10:15,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 23:10:15,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-06 23:10:15,971 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-06 23:10:15,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:15,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1731483506, now seen corresponding path program 2 times [2023-11-06 23:10:15,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:10:15,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045373957] [2023-11-06 23:10:15,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:15,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:10:15,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:16,234 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:10:16,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:10:16,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045373957] [2023-11-06 23:10:16,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045373957] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:10:16,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146499637] [2023-11-06 23:10:16,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:10:16,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:10:16,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:10:16,236 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:10:16,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 23:10:16,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 23:10:16,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:10:16,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 23:10:16,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:10:16,404 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 23:10:16,404 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:10:16,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146499637] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:16,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:10:16,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2023-11-06 23:10:16,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43596463] [2023-11-06 23:10:16,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:16,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:10:16,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:10:16,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:10:16,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2023-11-06 23:10:16,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 365 [2023-11-06 23:10:16,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 36 transitions, 230 flow. Second operand has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:16,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:10:16,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 365 [2023-11-06 23:10:16,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:10:16,483 INFO L124 PetriNetUnfolderBase]: 12/45 cut-off events. [2023-11-06 23:10:16,483 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2023-11-06 23:10:16,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 45 events. 12/45 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 68 event pairs, 0 based on Foata normal form. 2/46 useless extension candidates. Maximal degree in co-relation 179. Up to 45 conditions per place. [2023-11-06 23:10:16,484 INFO L140 encePairwiseOnDemand]: 363/365 looper letters, 0 selfloop transitions, 0 changer transitions 35/35 dead transitions. [2023-11-06 23:10:16,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 35 transitions, 278 flow [2023-11-06 23:10:16,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:10:16,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:10:16,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 497 transitions. [2023-11-06 23:10:16,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45388127853881277 [2023-11-06 23:10:16,487 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 497 transitions. [2023-11-06 23:10:16,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 497 transitions. [2023-11-06 23:10:16,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:10:16,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 497 transitions. [2023-11-06 23:10:16,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:16,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:16,491 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:16,492 INFO L175 Difference]: Start difference. First operand has 57 places, 36 transitions, 230 flow. Second operand 3 states and 497 transitions. [2023-11-06 23:10:16,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 35 transitions, 278 flow [2023-11-06 23:10:16,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 35 transitions, 212 flow, removed 2 selfloop flow, removed 12 redundant places. [2023-11-06 23:10:16,493 INFO L231 Difference]: Finished difference. Result has 23 places, 0 transitions, 0 flow [2023-11-06 23:10:16,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=23, PETRI_TRANSITIONS=0} [2023-11-06 23:10:16,494 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -5 predicate places. [2023-11-06 23:10:16,494 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 0 transitions, 0 flow [2023-11-06 23:10:16,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:10:16,497 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2023-11-06 23:10:16,497 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2023-11-06 23:10:16,498 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2023-11-06 23:10:16,498 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2023-11-06 23:10:16,498 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2023-11-06 23:10:16,498 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2023-11-06 23:10:16,498 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2023-11-06 23:10:16,498 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2023-11-06 23:10:16,498 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 14 remaining) [2023-11-06 23:10:16,499 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 14 remaining) [2023-11-06 23:10:16,499 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2023-11-06 23:10:16,499 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2023-11-06 23:10:16,499 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2023-11-06 23:10:16,499 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2023-11-06 23:10:16,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 23:10:16,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-06 23:10:16,710 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:16,718 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 23:10:16,718 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 23:10:16,724 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:10:16 BasicIcfg [2023-11-06 23:10:16,724 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 23:10:16,725 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 23:10:16,725 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 23:10:16,725 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 23:10:16,726 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:09:59" (3/4) ... [2023-11-06 23:10:16,728 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 23:10:16,732 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-06 23:10:16,732 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-06 23:10:16,743 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2023-11-06 23:10:16,744 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 23:10:16,744 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 23:10:16,745 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 23:10:16,827 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 23:10:16,827 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 23:10:16,828 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 23:10:16,828 INFO L158 Benchmark]: Toolchain (without parser) took 18936.84ms. Allocated memory was 140.5MB in the beginning and 205.5MB in the end (delta: 65.0MB). Free memory was 103.8MB in the beginning and 133.5MB in the end (delta: -29.7MB). Peak memory consumption was 36.5MB. Max. memory is 16.1GB. [2023-11-06 23:10:16,829 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 96.5MB. Free memory is still 46.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:10:16,829 INFO L158 Benchmark]: CACSL2BoogieTranslator took 332.68ms. Allocated memory is still 140.5MB. Free memory was 103.4MB in the beginning and 91.8MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 23:10:16,830 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.16ms. Allocated memory is still 140.5MB. Free memory was 91.8MB in the beginning and 89.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:10:16,830 INFO L158 Benchmark]: Boogie Preprocessor took 47.53ms. Allocated memory is still 140.5MB. Free memory was 89.5MB in the beginning and 87.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:10:16,830 INFO L158 Benchmark]: RCFGBuilder took 1085.11ms. Allocated memory is still 140.5MB. Free memory was 87.8MB in the beginning and 89.3MB in the end (delta: -1.5MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. [2023-11-06 23:10:16,831 INFO L158 Benchmark]: TraceAbstraction took 17293.62ms. Allocated memory was 140.5MB in the beginning and 205.5MB in the end (delta: 65.0MB). Free memory was 88.6MB in the beginning and 137.7MB in the end (delta: -49.1MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2023-11-06 23:10:16,831 INFO L158 Benchmark]: Witness Printer took 103.18ms. Allocated memory is still 205.5MB. Free memory was 137.7MB in the beginning and 133.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 23:10:16,833 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 96.5MB. Free memory is still 46.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 332.68ms. Allocated memory is still 140.5MB. Free memory was 103.4MB in the beginning and 91.8MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.16ms. Allocated memory is still 140.5MB. Free memory was 91.8MB in the beginning and 89.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.53ms. Allocated memory is still 140.5MB. Free memory was 89.5MB in the beginning and 87.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1085.11ms. Allocated memory is still 140.5MB. Free memory was 87.8MB in the beginning and 89.3MB in the end (delta: -1.5MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. * TraceAbstraction took 17293.62ms. Allocated memory was 140.5MB in the beginning and 205.5MB in the end (delta: 65.0MB). Free memory was 88.6MB in the beginning and 137.7MB in the end (delta: -49.1MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. * Witness Printer took 103.18ms. Allocated memory is still 205.5MB. Free memory was 137.7MB in the beginning and 133.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.2s, 159 PlacesBefore, 28 PlacesAfterwards, 164 TransitionsBefore, 25 TransitionsAfterwards, 900 CoEnabledTransitionPairs, 7 FixpointIterations, 114 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 18 TrivialYvCompositions, 4 ConcurrentYvCompositions, 8 ChoiceCompositions, 177 TotalNumberOfCompositions, 990 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 910, independent: 895, independent conditional: 0, independent unconditional: 895, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 507, independent: 497, independent conditional: 0, independent unconditional: 497, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 910, independent: 398, independent conditional: 0, independent unconditional: 398, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 507, unknown conditional: 0, unknown unconditional: 507] , Statistics on independence cache: Total cache size (in pairs): 23, Positive cache size: 22, Positive conditional cache size: 0, Positive unconditional cache size: 22, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 206 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 17.1s, OverallIterations: 15, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 838 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 491 mSDsluCounter, 190 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 58 mSDsCounter, 112 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1370 IncrementalHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 112 mSolverCounterUnsat, 132 mSDtfsCounter, 1370 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 160 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=471occurred in iteration=8, InterpolantAutomatonStates: 68, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 203 NumberOfCodeBlocks, 183 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 204 ConstructedInterpolants, 0 QuantifiedInterpolants, 443 SizeOfPredicates, 10 NumberOfNonLiveVariables, 1375 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 29 InterpolantComputations, 11 PerfectInterpolantSequences, 106/223 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 23:10:16,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a7c975-b02e-48b9-8d66-ba34fed4b3f4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE