./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_182f399f-246e-41ed-94a8-40ba9da3fe6f/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_182f399f-246e-41ed-94a8-40ba9da3fe6f/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_182f399f-246e-41ed-94a8-40ba9da3fe6f/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_182f399f-246e-41ed-94a8-40ba9da3fe6f/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_182f399f-246e-41ed-94a8-40ba9da3fe6f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_182f399f-246e-41ed-94a8-40ba9da3fe6f/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --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 566e2cbe460cf96671c9cef5a53ce51910e23c462e96f394be80b957976729c5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:05:36,679 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:05:36,753 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_182f399f-246e-41ed-94a8-40ba9da3fe6f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 08:05:36,759 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:05:36,760 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:05:36,787 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:05:36,788 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:05:36,788 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:05:36,789 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:05:36,790 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:05:36,791 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:05:36,791 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:05:36,792 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:05:36,793 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:05:36,793 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:05:36,794 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:05:36,795 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:05:36,795 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:05:36,796 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:05:36,797 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:05:36,797 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:05:36,798 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:05:36,799 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 08:05:36,799 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:05:36,800 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:05:36,801 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:05:36,801 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:05:36,802 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:05:36,802 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:05:36,803 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:05:36,804 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:05:36,804 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:05:36,805 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:05:36,805 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:05:36,806 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:05:36,806 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:05:36,807 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:05:36,807 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:05:36,807 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:05:36,808 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:05:36,808 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:05:36,809 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_182f399f-246e-41ed-94a8-40ba9da3fe6f/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_182f399f-246e-41ed-94a8-40ba9da3fe6f/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 566e2cbe460cf96671c9cef5a53ce51910e23c462e96f394be80b957976729c5 [2023-11-19 08:05:37,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:05:37,144 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:05:37,147 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:05:37,148 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:05:37,149 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:05:37,150 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_182f399f-246e-41ed-94a8-40ba9da3fe6f/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2023-11-19 08:05:40,333 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:05:40,693 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:05:40,694 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_182f399f-246e-41ed-94a8-40ba9da3fe6f/sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2023-11-19 08:05:40,714 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_182f399f-246e-41ed-94a8-40ba9da3fe6f/bin/uautomizer-verify-uCwYo4JHxu/data/866adb1d4/8791ed821df2429ab65ef5de37177dae/FLAG1dedb583b [2023-11-19 08:05:40,730 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_182f399f-246e-41ed-94a8-40ba9da3fe6f/bin/uautomizer-verify-uCwYo4JHxu/data/866adb1d4/8791ed821df2429ab65ef5de37177dae [2023-11-19 08:05:40,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:05:40,740 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:05:40,742 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:05:40,742 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:05:40,747 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:05:40,749 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:40" (1/1) ... [2023-11-19 08:05:40,750 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37f8ff63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:40, skipping insertion in model container [2023-11-19 08:05:40,751 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:40" (1/1) ... [2023-11-19 08:05:40,830 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:05:41,450 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:05:41,470 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:05:41,522 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:05:41,594 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:05:41,595 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:41 WrapperNode [2023-11-19 08:05:41,595 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:05:41,596 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:05:41,597 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:05:41,597 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:05:41,605 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:41" (1/1) ... [2023-11-19 08:05:41,626 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:41" (1/1) ... [2023-11-19 08:05:41,662 INFO L138 Inliner]: procedures = 271, calls = 42, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 283 [2023-11-19 08:05:41,663 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:05:41,664 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:05:41,664 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:05:41,664 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:05:41,674 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:41" (1/1) ... [2023-11-19 08:05:41,674 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:41" (1/1) ... [2023-11-19 08:05:41,680 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:41" (1/1) ... [2023-11-19 08:05:41,680 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:41" (1/1) ... [2023-11-19 08:05:41,693 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:41" (1/1) ... [2023-11-19 08:05:41,701 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:41" (1/1) ... [2023-11-19 08:05:41,704 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:41" (1/1) ... [2023-11-19 08:05:41,707 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:41" (1/1) ... [2023-11-19 08:05:41,712 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:05:41,713 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:05:41,713 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:05:41,714 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:05:41,714 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:41" (1/1) ... [2023-11-19 08:05:41,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:05:41,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_182f399f-246e-41ed-94a8-40ba9da3fe6f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:41,766 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_182f399f-246e-41ed-94a8-40ba9da3fe6f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:05:41,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_182f399f-246e-41ed-94a8-40ba9da3fe6f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:05:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:05:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:05:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:05:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:05:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 08:05:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:05:41,813 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 08:05:41,813 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 08:05:41,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:05:41,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:05:41,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:05:41,815 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 08:05:41,988 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:05:41,990 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:05:42,426 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:05:42,442 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:05:42,442 INFO L302 CfgBuilder]: Removed 35 assume(true) statements. [2023-11-19 08:05:42,449 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:42 BoogieIcfgContainer [2023-11-19 08:05:42,449 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:05:42,453 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:05:42,453 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:05:42,456 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:05:42,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:05:40" (1/3) ... [2023-11-19 08:05:42,458 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@597f9fbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:05:42, skipping insertion in model container [2023-11-19 08:05:42,458 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:41" (2/3) ... [2023-11-19 08:05:42,459 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@597f9fbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:05:42, skipping insertion in model container [2023-11-19 08:05:42,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:42" (3/3) ... [2023-11-19 08:05:42,460 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_72-funloop_hard_racing.i [2023-11-19 08:05:42,470 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:05:42,483 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:05:42,483 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-11-19 08:05:42,484 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:05:42,596 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 08:05:42,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 268 places, 313 transitions, 633 flow [2023-11-19 08:05:42,839 INFO L124 PetriNetUnfolderBase]: 78/484 cut-off events. [2023-11-19 08:05:42,840 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 08:05:42,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 489 conditions, 484 events. 78/484 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2418 event pairs, 0 based on Foata normal form. 0/371 useless extension candidates. Maximal degree in co-relation 268. Up to 8 conditions per place. [2023-11-19 08:05:42,856 INFO L82 GeneralOperation]: Start removeDead. Operand has 268 places, 313 transitions, 633 flow [2023-11-19 08:05:42,877 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 266 places, 310 transitions, 627 flow [2023-11-19 08:05:42,882 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:05:42,897 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 266 places, 310 transitions, 627 flow [2023-11-19 08:05:42,900 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 266 places, 310 transitions, 627 flow [2023-11-19 08:05:42,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 266 places, 310 transitions, 627 flow [2023-11-19 08:05:43,013 INFO L124 PetriNetUnfolderBase]: 77/481 cut-off events. [2023-11-19 08:05:43,013 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 08:05:43,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 486 conditions, 481 events. 77/481 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2401 event pairs, 0 based on Foata normal form. 0/369 useless extension candidates. Maximal degree in co-relation 268. Up to 8 conditions per place. [2023-11-19 08:05:43,039 INFO L119 LiptonReduction]: Number of co-enabled transitions 31856 [2023-11-19 08:05:48,386 INFO L134 LiptonReduction]: Checked pairs total: 51987 [2023-11-19 08:05:48,387 INFO L136 LiptonReduction]: Total number of compositions: 289 [2023-11-19 08:05:48,407 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:05:48,417 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=LoopHeads, 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;@2281d6b0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:05:48,417 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-11-19 08:05:48,419 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:05:48,420 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 08:05:48,420 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:05:48,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:48,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 08:05:48,421 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-19 08:05:48,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:48,428 INFO L85 PathProgramCache]: Analyzing trace with hash 39042, now seen corresponding path program 1 times [2023-11-19 08:05:48,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:48,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578706003] [2023-11-19 08:05:48,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:48,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:48,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:48,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:48,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:48,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578706003] [2023-11-19 08:05:48,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578706003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:48,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:48,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:05:48,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190632174] [2023-11-19 08:05:48,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:48,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:05:48,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:48,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:05:48,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:05:48,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 602 [2023-11-19 08:05:48,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 121 transitions, 249 flow. Second operand has 3 states, 3 states have (on average 261.6666666666667) internal successors, (785), 3 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:48,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:48,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 602 [2023-11-19 08:05:48,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:49,302 INFO L124 PetriNetUnfolderBase]: 1078/2224 cut-off events. [2023-11-19 08:05:49,303 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 08:05:49,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4261 conditions, 2224 events. 1078/2224 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 14863 event pairs, 924 based on Foata normal form. 292/1794 useless extension candidates. Maximal degree in co-relation 4145. Up to 2031 conditions per place. [2023-11-19 08:05:49,322 INFO L140 encePairwiseOnDemand]: 564/602 looper letters, 74 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2023-11-19 08:05:49,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 88 transitions, 335 flow [2023-11-19 08:05:49,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:05:49,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:05:49,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 896 transitions. [2023-11-19 08:05:49,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49612403100775193 [2023-11-19 08:05:49,343 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 896 transitions. [2023-11-19 08:05:49,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 896 transitions. [2023-11-19 08:05:49,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:49,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 896 transitions. [2023-11-19 08:05:49,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 298.6666666666667) internal successors, (896), 3 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:49,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 602.0) internal successors, (2408), 4 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:49,368 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 602.0) internal successors, (2408), 4 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:49,370 INFO L175 Difference]: Start difference. First operand has 85 places, 121 transitions, 249 flow. Second operand 3 states and 896 transitions. [2023-11-19 08:05:49,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 88 transitions, 335 flow [2023-11-19 08:05:49,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 88 transitions, 335 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:05:49,379 INFO L231 Difference]: Finished difference. Result has 87 places, 88 transitions, 195 flow [2023-11-19 08:05:49,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=195, PETRI_PLACES=87, PETRI_TRANSITIONS=88} [2023-11-19 08:05:49,385 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 2 predicate places. [2023-11-19 08:05:49,385 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 88 transitions, 195 flow [2023-11-19 08:05:49,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.6666666666667) internal successors, (785), 3 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:49,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:49,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 08:05:49,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:05:49,388 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-19 08:05:49,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:49,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1213570, now seen corresponding path program 1 times [2023-11-19 08:05:49,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:49,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770238045] [2023-11-19 08:05:49,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:49,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:49,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:49,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:49,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:49,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770238045] [2023-11-19 08:05:49,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770238045] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:05:49,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440974000] [2023-11-19 08:05:49,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:49,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:49,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_182f399f-246e-41ed-94a8-40ba9da3fe6f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:49,469 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_182f399f-246e-41ed-94a8-40ba9da3fe6f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:05:49,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_182f399f-246e-41ed-94a8-40ba9da3fe6f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:05:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:49,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:05:49,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:05:49,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:49,621 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:05:49,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440974000] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:49,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:05:49,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-19 08:05:49,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400266260] [2023-11-19 08:05:49,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:49,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:05:49,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:49,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:05:49,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:05:49,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 602 [2023-11-19 08:05:49,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 88 transitions, 195 flow. Second operand has 4 states, 4 states have (on average 261.75) internal successors, (1047), 4 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:49,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:49,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 602 [2023-11-19 08:05:49,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:50,061 INFO L124 PetriNetUnfolderBase]: 1078/2223 cut-off events. [2023-11-19 08:05:50,061 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 08:05:50,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4266 conditions, 2223 events. 1078/2223 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 14840 event pairs, 924 based on Foata normal form. 0/1502 useless extension candidates. Maximal degree in co-relation 4254. Up to 2028 conditions per place. [2023-11-19 08:05:50,081 INFO L140 encePairwiseOnDemand]: 598/602 looper letters, 72 selfloop transitions, 3 changer transitions 0/87 dead transitions. [2023-11-19 08:05:50,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 87 transitions, 341 flow [2023-11-19 08:05:50,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:05:50,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:05:50,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1120 transitions. [2023-11-19 08:05:50,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2023-11-19 08:05:50,087 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1120 transitions. [2023-11-19 08:05:50,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1120 transitions. [2023-11-19 08:05:50,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:50,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1120 transitions. [2023-11-19 08:05:50,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 280.0) internal successors, (1120), 4 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:50,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 602.0) internal successors, (3010), 5 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:50,101 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 602.0) internal successors, (3010), 5 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:50,101 INFO L175 Difference]: Start difference. First operand has 87 places, 88 transitions, 195 flow. Second operand 4 states and 1120 transitions. [2023-11-19 08:05:50,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 87 transitions, 341 flow [2023-11-19 08:05:50,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 87 transitions, 337 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 08:05:50,106 INFO L231 Difference]: Finished difference. Result has 88 places, 87 transitions, 193 flow [2023-11-19 08:05:50,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=193, PETRI_PLACES=88, PETRI_TRANSITIONS=87} [2023-11-19 08:05:50,107 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 3 predicate places. [2023-11-19 08:05:50,108 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 87 transitions, 193 flow [2023-11-19 08:05:50,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 261.75) internal successors, (1047), 4 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:50,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:50,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 08:05:50,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_182f399f-246e-41ed-94a8-40ba9da3fe6f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 08:05:50,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_182f399f-246e-41ed-94a8-40ba9da3fe6f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:50,329 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-19 08:05:50,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:50,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1796526255, now seen corresponding path program 1 times [2023-11-19 08:05:50,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:50,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547499304] [2023-11-19 08:05:50,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:50,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:50,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:50,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:50,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:50,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547499304] [2023-11-19 08:05:50,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547499304] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:05:50,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048999987] [2023-11-19 08:05:50,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:50,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:50,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_182f399f-246e-41ed-94a8-40ba9da3fe6f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:50,445 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_182f399f-246e-41ed-94a8-40ba9da3fe6f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:05:50,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_182f399f-246e-41ed-94a8-40ba9da3fe6f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:05:50,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:50,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:05:50,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:05:50,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:50,576 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:05:50,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:50,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048999987] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:05:50,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:05:50,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-19 08:05:50,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969740976] [2023-11-19 08:05:50,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:05:50,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:05:50,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:50,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:05:50,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:05:50,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 602 [2023-11-19 08:05:50,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 87 transitions, 193 flow. Second operand has 7 states, 7 states have (on average 261.57142857142856) internal successors, (1831), 7 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:50,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:50,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 602 [2023-11-19 08:05:50,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:51,052 INFO L124 PetriNetUnfolderBase]: 1078/2226 cut-off events. [2023-11-19 08:05:51,052 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 08:05:51,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4276 conditions, 2226 events. 1078/2226 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 14860 event pairs, 924 based on Foata normal form. 3/1509 useless extension candidates. Maximal degree in co-relation 4248. Up to 2030 conditions per place. [2023-11-19 08:05:51,072 INFO L140 encePairwiseOnDemand]: 599/602 looper letters, 73 selfloop transitions, 5 changer transitions 0/90 dead transitions. [2023-11-19 08:05:51,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 90 transitions, 361 flow [2023-11-19 08:05:51,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:05:51,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:05:51,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1641 transitions. [2023-11-19 08:05:51,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4543189368770764 [2023-11-19 08:05:51,080 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1641 transitions. [2023-11-19 08:05:51,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1641 transitions. [2023-11-19 08:05:51,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:51,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1641 transitions. [2023-11-19 08:05:51,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 273.5) internal successors, (1641), 6 states have internal predecessors, (1641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:51,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 602.0) internal successors, (4214), 7 states have internal predecessors, (4214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:51,104 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 602.0) internal successors, (4214), 7 states have internal predecessors, (4214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:51,105 INFO L175 Difference]: Start difference. First operand has 88 places, 87 transitions, 193 flow. Second operand 6 states and 1641 transitions. [2023-11-19 08:05:51,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 90 transitions, 361 flow [2023-11-19 08:05:51,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 90 transitions, 357 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:05:51,113 INFO L231 Difference]: Finished difference. Result has 94 places, 90 transitions, 225 flow [2023-11-19 08:05:51,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=225, PETRI_PLACES=94, PETRI_TRANSITIONS=90} [2023-11-19 08:05:51,115 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 9 predicate places. [2023-11-19 08:05:51,115 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 90 transitions, 225 flow [2023-11-19 08:05:51,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 261.57142857142856) internal successors, (1831), 7 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:51,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:51,118 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-11-19 08:05:51,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_182f399f-246e-41ed-94a8-40ba9da3fe6f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:05:51,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_182f399f-246e-41ed-94a8-40ba9da3fe6f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:51,339 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-19 08:05:51,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:51,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1082342575, now seen corresponding path program 2 times [2023-11-19 08:05:51,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:51,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846094010] [2023-11-19 08:05:51,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:51,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:51,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:51,449 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 08:05:51,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:51,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846094010] [2023-11-19 08:05:51,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846094010] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:51,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:51,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:05:51,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331369550] [2023-11-19 08:05:51,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:51,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:05:51,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:51,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:05:51,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:05:51,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 602 [2023-11-19 08:05:51,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 90 transitions, 225 flow. Second operand has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:51,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:51,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 602 [2023-11-19 08:05:51,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:51,837 INFO L124 PetriNetUnfolderBase]: 1033/2118 cut-off events. [2023-11-19 08:05:51,837 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-19 08:05:51,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4052 conditions, 2118 events. 1033/2118 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 14255 event pairs, 410 based on Foata normal form. 0/1480 useless extension candidates. Maximal degree in co-relation 4017. Up to 1880 conditions per place. [2023-11-19 08:05:51,854 INFO L140 encePairwiseOnDemand]: 597/602 looper letters, 97 selfloop transitions, 2 changer transitions 0/111 dead transitions. [2023-11-19 08:05:51,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 111 transitions, 465 flow [2023-11-19 08:05:51,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:05:51,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:05:51,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 881 transitions. [2023-11-19 08:05:51,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48781838316722037 [2023-11-19 08:05:51,859 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 881 transitions. [2023-11-19 08:05:51,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 881 transitions. [2023-11-19 08:05:51,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:51,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 881 transitions. [2023-11-19 08:05:51,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 293.6666666666667) internal successors, (881), 3 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:51,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 602.0) internal successors, (2408), 4 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:51,870 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 602.0) internal successors, (2408), 4 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:51,874 INFO L175 Difference]: Start difference. First operand has 94 places, 90 transitions, 225 flow. Second operand 3 states and 881 transitions. [2023-11-19 08:05:51,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 111 transitions, 465 flow [2023-11-19 08:05:51,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 111 transitions, 451 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-19 08:05:51,883 INFO L231 Difference]: Finished difference. Result has 94 places, 88 transitions, 215 flow [2023-11-19 08:05:51,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=215, PETRI_PLACES=94, PETRI_TRANSITIONS=88} [2023-11-19 08:05:51,885 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 9 predicate places. [2023-11-19 08:05:51,886 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 88 transitions, 215 flow [2023-11-19 08:05:51,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:51,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:51,892 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-11-19 08:05:51,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:05:51,893 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-19 08:05:51,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:51,894 INFO L85 PathProgramCache]: Analyzing trace with hash 749205798, now seen corresponding path program 1 times [2023-11-19 08:05:51,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:51,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849022519] [2023-11-19 08:05:51,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:51,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:52,038 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:05:52,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:52,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849022519] [2023-11-19 08:05:52,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849022519] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:05:52,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361539448] [2023-11-19 08:05:52,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:52,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:52,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_182f399f-246e-41ed-94a8-40ba9da3fe6f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:52,044 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_182f399f-246e-41ed-94a8-40ba9da3fe6f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:05:52,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_182f399f-246e-41ed-94a8-40ba9da3fe6f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:05:52,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:52,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:05:52,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:05:52,174 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:05:52,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:05:52,233 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:05:52,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361539448] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:05:52,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:05:52,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-19 08:05:52,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943397457] [2023-11-19 08:05:52,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:05:52,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 08:05:52,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:52,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 08:05:52,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-19 08:05:52,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 602 [2023-11-19 08:05:52,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 88 transitions, 215 flow. Second operand has 13 states, 13 states have (on average 261.3076923076923) internal successors, (3397), 13 states have internal predecessors, (3397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:52,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:52,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 602 [2023-11-19 08:05:52,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:52,692 INFO L124 PetriNetUnfolderBase]: 1033/2096 cut-off events. [2023-11-19 08:05:52,692 INFO L125 PetriNetUnfolderBase]: For 155/155 co-relation queries the response was YES. [2023-11-19 08:05:52,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4110 conditions, 2096 events. 1033/2096 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 13592 event pairs, 882 based on Foata normal form. 6/1478 useless extension candidates. Maximal degree in co-relation 4056. Up to 1901 conditions per place. [2023-11-19 08:05:52,709 INFO L140 encePairwiseOnDemand]: 599/602 looper letters, 71 selfloop transitions, 11 changer transitions 0/94 dead transitions. [2023-11-19 08:05:52,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 94 transitions, 415 flow [2023-11-19 08:05:52,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 08:05:52,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 08:05:52,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3208 transitions. [2023-11-19 08:05:52,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4440753045404208 [2023-11-19 08:05:52,722 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3208 transitions. [2023-11-19 08:05:52,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3208 transitions. [2023-11-19 08:05:52,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:52,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3208 transitions. [2023-11-19 08:05:52,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 267.3333333333333) internal successors, (3208), 12 states have internal predecessors, (3208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:52,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 602.0) internal successors, (7826), 13 states have internal predecessors, (7826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:52,752 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 602.0) internal successors, (7826), 13 states have internal predecessors, (7826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:52,752 INFO L175 Difference]: Start difference. First operand has 94 places, 88 transitions, 215 flow. Second operand 12 states and 3208 transitions. [2023-11-19 08:05:52,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 94 transitions, 415 flow [2023-11-19 08:05:52,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 94 transitions, 411 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:05:52,757 INFO L231 Difference]: Finished difference. Result has 109 places, 94 transitions, 295 flow [2023-11-19 08:05:52,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=295, PETRI_PLACES=109, PETRI_TRANSITIONS=94} [2023-11-19 08:05:52,758 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 24 predicate places. [2023-11-19 08:05:52,759 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 94 transitions, 295 flow [2023-11-19 08:05:52,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 261.3076923076923) internal successors, (3397), 13 states have internal predecessors, (3397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:52,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:52,761 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-11-19 08:05:52,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_182f399f-246e-41ed-94a8-40ba9da3fe6f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:05:52,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_182f399f-246e-41ed-94a8-40ba9da3fe6f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:52,980 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-19 08:05:52,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:52,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1033861414, now seen corresponding path program 2 times [2023-11-19 08:05:52,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:52,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961825196] [2023-11-19 08:05:52,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:52,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:53,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:05:53,016 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:05:53,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:05:53,069 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:05:53,069 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:05:53,070 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2023-11-19 08:05:53,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2023-11-19 08:05:53,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2023-11-19 08:05:53,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2023-11-19 08:05:53,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2023-11-19 08:05:53,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2023-11-19 08:05:53,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2023-11-19 08:05:53,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2023-11-19 08:05:53,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2023-11-19 08:05:53,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2023-11-19 08:05:53,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2023-11-19 08:05:53,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2023-11-19 08:05:53,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2023-11-19 08:05:53,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2023-11-19 08:05:53,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2023-11-19 08:05:53,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2023-11-19 08:05:53,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2023-11-19 08:05:53,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2023-11-19 08:05:53,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2023-11-19 08:05:53,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2023-11-19 08:05:53,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2023-11-19 08:05:53,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2023-11-19 08:05:53,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2023-11-19 08:05:53,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2023-11-19 08:05:53,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2023-11-19 08:05:53,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2023-11-19 08:05:53,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2023-11-19 08:05:53,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2023-11-19 08:05:53,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2023-11-19 08:05:53,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:05:53,083 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2023-11-19 08:05:53,086 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 08:05:53,086 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 08:05:53,147 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 08:05:53,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 344 places, 403 transitions, 822 flow [2023-11-19 08:05:53,290 INFO L124 PetriNetUnfolderBase]: 126/783 cut-off events. [2023-11-19 08:05:53,291 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 08:05:53,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 795 conditions, 783 events. 126/783 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4360 event pairs, 0 based on Foata normal form. 0/599 useless extension candidates. Maximal degree in co-relation 486. Up to 12 conditions per place. [2023-11-19 08:05:53,303 INFO L82 GeneralOperation]: Start removeDead. Operand has 344 places, 403 transitions, 822 flow [2023-11-19 08:05:53,317 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 344 places, 403 transitions, 822 flow [2023-11-19 08:05:53,317 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:05:53,317 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 344 places, 403 transitions, 822 flow [2023-11-19 08:05:53,318 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 344 places, 403 transitions, 822 flow [2023-11-19 08:05:53,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 344 places, 403 transitions, 822 flow [2023-11-19 08:05:53,479 INFO L124 PetriNetUnfolderBase]: 126/783 cut-off events. [2023-11-19 08:05:53,480 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 08:05:53,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 795 conditions, 783 events. 126/783 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4360 event pairs, 0 based on Foata normal form. 0/599 useless extension candidates. Maximal degree in co-relation 486. Up to 12 conditions per place. [2023-11-19 08:05:53,534 INFO L119 LiptonReduction]: Number of co-enabled transitions 82544 [2023-11-19 08:05:59,418 INFO L134 LiptonReduction]: Checked pairs total: 147170 [2023-11-19 08:05:59,418 INFO L136 LiptonReduction]: Total number of compositions: 358 [2023-11-19 08:05:59,421 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:05:59,421 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=LoopHeads, 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;@2281d6b0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:05:59,422 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2023-11-19 08:05:59,423 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:05:59,423 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 08:05:59,424 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:05:59,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:59,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 08:05:59,424 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-19 08:05:59,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:59,425 INFO L85 PathProgramCache]: Analyzing trace with hash 66191, now seen corresponding path program 1 times [2023-11-19 08:05:59,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:59,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010762833] [2023-11-19 08:05:59,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:59,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:59,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:59,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:59,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010762833] [2023-11-19 08:05:59,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010762833] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:59,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:59,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:05:59,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188779973] [2023-11-19 08:05:59,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:59,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:05:59,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:59,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:05:59,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:05:59,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 761 [2023-11-19 08:05:59,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 163 transitions, 342 flow. Second operand has 3 states, 3 states have (on average 335.6666666666667) internal successors, (1007), 3 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:59,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:59,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 761 [2023-11-19 08:05:59,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:08,119 INFO L124 PetriNetUnfolderBase]: 53493/80817 cut-off events. [2023-11-19 08:06:08,119 INFO L125 PetriNetUnfolderBase]: For 186/186 co-relation queries the response was YES. [2023-11-19 08:06:08,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158145 conditions, 80817 events. 53493/80817 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 2669. Compared 627252 event pairs, 48250 based on Foata normal form. 9459/62749 useless extension candidates. Maximal degree in co-relation 74498. Up to 77201 conditions per place. [2023-11-19 08:06:08,718 INFO L140 encePairwiseOnDemand]: 712/761 looper letters, 102 selfloop transitions, 2 changer transitions 0/119 dead transitions. [2023-11-19 08:06:08,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 119 transitions, 462 flow [2023-11-19 08:06:08,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:08,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:06:08,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1157 transitions. [2023-11-19 08:06:08,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067893123083662 [2023-11-19 08:06:08,726 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1157 transitions. [2023-11-19 08:06:08,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1157 transitions. [2023-11-19 08:06:08,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:08,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1157 transitions. [2023-11-19 08:06:08,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 385.6666666666667) internal successors, (1157), 3 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:08,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:08,742 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:08,743 INFO L175 Difference]: Start difference. First operand has 114 places, 163 transitions, 342 flow. Second operand 3 states and 1157 transitions. [2023-11-19 08:06:08,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 119 transitions, 462 flow [2023-11-19 08:06:08,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 119 transitions, 462 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:06:08,748 INFO L231 Difference]: Finished difference. Result has 116 places, 119 transitions, 266 flow [2023-11-19 08:06:08,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=116, PETRI_TRANSITIONS=119} [2023-11-19 08:06:08,751 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 2 predicate places. [2023-11-19 08:06:08,751 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 119 transitions, 266 flow [2023-11-19 08:06:08,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 335.6666666666667) internal successors, (1007), 3 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:08,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:08,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 08:06:08,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 08:06:08,753 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-19 08:06:08,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:08,754 INFO L85 PathProgramCache]: Analyzing trace with hash 2056174, now seen corresponding path program 1 times [2023-11-19 08:06:08,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:08,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429028815] [2023-11-19 08:06:08,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:08,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:08,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:08,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:08,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:08,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429028815] [2023-11-19 08:06:08,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429028815] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:08,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:08,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:06:08,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531418627] [2023-11-19 08:06:08,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:08,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:08,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:08,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:08,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:08,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 761 [2023-11-19 08:06:08,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 119 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 336.0) internal successors, (1008), 3 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:08,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:08,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 761 [2023-11-19 08:06:08,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:16,121 INFO L124 PetriNetUnfolderBase]: 53493/80816 cut-off events. [2023-11-19 08:06:16,121 INFO L125 PetriNetUnfolderBase]: For 186/186 co-relation queries the response was YES. [2023-11-19 08:06:16,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158150 conditions, 80816 events. 53493/80816 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 2669. Compared 627123 event pairs, 48250 based on Foata normal form. 0/53290 useless extension candidates. Maximal degree in co-relation 158137. Up to 77198 conditions per place. [2023-11-19 08:06:16,617 INFO L140 encePairwiseOnDemand]: 758/761 looper letters, 101 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2023-11-19 08:06:16,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 118 transitions, 468 flow [2023-11-19 08:06:16,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:16,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:06:16,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1108 transitions. [2023-11-19 08:06:16,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4853263250109505 [2023-11-19 08:06:16,623 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1108 transitions. [2023-11-19 08:06:16,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1108 transitions. [2023-11-19 08:06:16,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:16,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1108 transitions. [2023-11-19 08:06:16,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 369.3333333333333) internal successors, (1108), 3 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:16,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:16,635 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:16,636 INFO L175 Difference]: Start difference. First operand has 116 places, 119 transitions, 266 flow. Second operand 3 states and 1108 transitions. [2023-11-19 08:06:16,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 118 transitions, 468 flow [2023-11-19 08:06:16,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 118 transitions, 464 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 08:06:16,641 INFO L231 Difference]: Finished difference. Result has 116 places, 118 transitions, 262 flow [2023-11-19 08:06:16,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=116, PETRI_TRANSITIONS=118} [2023-11-19 08:06:16,644 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 2 predicate places. [2023-11-19 08:06:16,645 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 118 transitions, 262 flow [2023-11-19 08:06:16,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 336.0) internal successors, (1008), 3 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:16,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:16,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:16,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 08:06:16,646 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-19 08:06:16,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:16,647 INFO L85 PathProgramCache]: Analyzing trace with hash 667682679, now seen corresponding path program 1 times [2023-11-19 08:06:16,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:16,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578442268] [2023-11-19 08:06:16,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:16,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:16,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:16,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:16,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:16,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578442268] [2023-11-19 08:06:16,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578442268] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:06:16,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411736602] [2023-11-19 08:06:16,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:16,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:16,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_182f399f-246e-41ed-94a8-40ba9da3fe6f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:16,690 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_182f399f-246e-41ed-94a8-40ba9da3fe6f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:16,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_182f399f-246e-41ed-94a8-40ba9da3fe6f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:06:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:16,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:06:16,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:16,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:16,810 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:06:16,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:16,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411736602] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:06:16,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:06:16,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-19 08:06:16,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177093017] [2023-11-19 08:06:16,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:06:16,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:06:16,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:16,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:06:16,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:06:16,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 334 out of 761 [2023-11-19 08:06:16,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 118 transitions, 262 flow. Second operand has 7 states, 7 states have (on average 335.57142857142856) internal successors, (2349), 7 states have internal predecessors, (2349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:16,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:16,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 334 of 761 [2023-11-19 08:06:16,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:23,935 INFO L124 PetriNetUnfolderBase]: 53493/80819 cut-off events. [2023-11-19 08:06:23,935 INFO L125 PetriNetUnfolderBase]: For 187/187 co-relation queries the response was YES. [2023-11-19 08:06:24,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158159 conditions, 80819 events. 53493/80819 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 2668. Compared 627101 event pairs, 48250 based on Foata normal form. 3/53297 useless extension candidates. Maximal degree in co-relation 158131. Up to 77200 conditions per place. [2023-11-19 08:06:24,325 INFO L140 encePairwiseOnDemand]: 758/761 looper letters, 101 selfloop transitions, 5 changer transitions 0/121 dead transitions. [2023-11-19 08:06:24,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 121 transitions, 486 flow [2023-11-19 08:06:24,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:06:24,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:06:24,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2113 transitions. [2023-11-19 08:06:24,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4627682873412177 [2023-11-19 08:06:24,334 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2113 transitions. [2023-11-19 08:06:24,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2113 transitions. [2023-11-19 08:06:24,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:24,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2113 transitions. [2023-11-19 08:06:24,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 352.1666666666667) internal successors, (2113), 6 states have internal predecessors, (2113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:24,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 761.0) internal successors, (5327), 7 states have internal predecessors, (5327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:24,354 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 761.0) internal successors, (5327), 7 states have internal predecessors, (5327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:24,354 INFO L175 Difference]: Start difference. First operand has 116 places, 118 transitions, 262 flow. Second operand 6 states and 2113 transitions. [2023-11-19 08:06:24,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 121 transitions, 486 flow [2023-11-19 08:06:24,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 121 transitions, 482 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:06:24,360 INFO L231 Difference]: Finished difference. Result has 122 places, 121 transitions, 294 flow [2023-11-19 08:06:24,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=294, PETRI_PLACES=122, PETRI_TRANSITIONS=121} [2023-11-19 08:06:24,363 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 8 predicate places. [2023-11-19 08:06:24,364 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 121 transitions, 294 flow [2023-11-19 08:06:24,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 335.57142857142856) internal successors, (2349), 7 states have internal predecessors, (2349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:24,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:24,365 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:24,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_182f399f-246e-41ed-94a8-40ba9da3fe6f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:24,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_182f399f-246e-41ed-94a8-40ba9da3fe6f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:24,587 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-19 08:06:24,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:24,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1311805096, now seen corresponding path program 2 times [2023-11-19 08:06:24,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:24,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131408839] [2023-11-19 08:06:24,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:24,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:24,638 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 08:06:24,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:24,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131408839] [2023-11-19 08:06:24,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131408839] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:24,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:24,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:06:24,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244617142] [2023-11-19 08:06:24,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:24,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:24,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:24,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:24,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:24,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 761 [2023-11-19 08:06:24,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 121 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 337.0) internal successors, (1011), 3 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:24,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:24,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 761 [2023-11-19 08:06:24,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand